CN100339687C - Wireless liquid level measuring device - Google Patents
Wireless liquid level measuring device Download PDFInfo
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- CN100339687C CN100339687C CNB2004100262956A CN200410026295A CN100339687C CN 100339687 C CN100339687 C CN 100339687C CN B2004100262956 A CNB2004100262956 A CN B2004100262956A CN 200410026295 A CN200410026295 A CN 200410026295A CN 100339687 C CN100339687 C CN 100339687C
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- liquid level
- circuit
- reading device
- inner core
- magnetic
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- 239000007788 liquid Substances 0.000 title claims abstract description 33
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 5
- 238000000576 coating method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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Abstract
The invention relates to a material level measuring device, in particular to a wireless liquid level measuring device. The device comprises an inner cylinder fixed along the height direction of the container, height marking information extending the height of the container on the inner cylinder, a magnetic floater positioned relative to the inner cylinder, and a marking information reading device in the inner cylinder, wherein the marking information reading device is provided with a magnetic body, the magnetic body is magnetically repelled with the corresponding surface of the magnetic floater, and the marking information reading device is provided with a signal output port, and is characterized in that: the signal output port is a radio frequency wireless transmitting circuit, and the liquid level information is transmitted to the outside of the container through the radio frequency wireless transmitting circuit.
Description
Affiliated technical field: the present invention relates to a kind of article position measuring device, particularly a kind of wireless type liquid level emasuring device.
Background technology: the Liu Min happy discloses a kind of level measuring method in 200410026069.8 patents, it is by placing the float in the container to form with the measurement mechanism that the measurement float moves, magnetic material on the float, in container, be fixed with inner core along the container height direction, the relative inner core of float location, interior tube bottom sealing, prolong the container height design in the inner core height mark information is arranged, the reading device that height mark information is arranged in the inner core, signal output interface is arranged in the reading device, when float changes up and down with liquid level, float drives reading device and moves up and down, reading device reads the container height label information constantly, and be that electric signal is outwards exported by signal output interface with the height mark information translation, by transmitter the liquid level signal that signal output interface sends is sent to the pulpit again, process and display by control.
Summary of the invention: the purpose of this invention is to provide a kind of wireless type liquid level emasuring device, it utilizes 200410026069.8 level measuring methods that provide to provide a kind of realization on-site signal that need not any circuit and transmits at a distance.
The object of the present invention is achieved like this, a kind of wireless type liquid level emasuring device, it by prolong the height mark information of container height of prolonging on the fixing inner core of container height direction, the inner core, the magnetic float, the label information reading device in the inner core of inner core location are formed relatively, the label information reading device body that is magnetic, corresponding the magnetic in it and magnetic float is repelled each other, the label information reading device has signal output, it is characterized in that: signal output is the wireless radiofrequency radiating circuit, sends liquid level information by the wireless radiofrequency radiating circuit outside container.
Advantage of the present invention is: the reading device that reads elevation information, constantly read the height mark information on the inner core and send liquid level signal with the wireless radiofrequency radiating circuit, send liquid level signal by the wireless radiofrequency radiating circuit and realize that the non-electricity of liquid level signal transmits at a distance, it is not only simple in structure, and safe and reliable, be fit to the oil tank level safety management.
Description of drawings:
The invention will be further described below in conjunction with the embodiment accompanying drawing:
Fig. 1 is the embodiment of the invention 1 structural representation;
Fig. 2 is the inner core sectional view;
Fig. 3 is the inner core cut-open view;
Fig. 4 is the reading device structural drawing;
Fig. 5 is the embodiment of the invention 2 structural representations;
Fig. 6 is the reading device circuit theory diagrams.
Among the figure, 1, container; 2, magnetic float; 3, inner core; 4, reading device; 5, height mark information; 6, liquid; 7, liquid level; 8, over cap; 9, flange; 10, battery; 11, protection tube; 12, heat-insulation layer; 13, internal layer; 14, guiding mechanism; 15, housing; 17, light guide plate; 18, photoelectric receiving tube; 19, non-magnetic shield; 20, scatterer; 21, reflective inclined-plane; 22, lighting source; 23, guide lugs; 24, guide pole; 25, lower magnet; 26, upper magnet; 27, web member; 28, control panel; 29, read circuit.
Embodiment: as shown in Figure 1, the vertical fixing up and down along container 1 in the container 1 has inner core 3, the inner core 3 outer magnetic floats 2 that are with; Magnetic float 2 floats on the position of the top liquid level 7 of liquid 7 in the container 1.Height mark information 5 is arranged on the inner core 3, and height mark information 5 can be to the height mark information 5 that goes up down by 8421 establishments; Also can be the height mark information 5 by gray encoding, its scale division value 1mm, 1cm make arbitrarily.In order to read the height mark information 5 in the inner core 3, the reading device 4 that reads these height mark information 5 is arranged in inner core 3.Reading device 4 positions, location are by upper magnet 26 on the housing 15 of reading device 4 and 25 location of the lower magnet on the magnetic float 2; Upper magnet 26 repels each other with lower magnet 25 corresponding surface magnetic poles.As opposite face is that s is extremely to the s utmost point.Reading device 4 is stable like this remains on fixing position, magnetic float 2 tops.Liquid injects, and liquid level rises, move on the magnetic float 2, reading device 4 with on move.Fluid discharge, liquid level descends, and magnetic float 2 moves down, and reading device 4 moves down thereupon.Reading device 4 constantly reads the height mark information 5 on the inner core and passes through the wireless radiofrequency radiating circuit to the pulpit, realizes that the non-electricity of liquid level signal transmits at a distance.
Insert inner core 3 lower seal in the container 1, the top is fixing by the non-magnetic shield 19 and the over cap 8 at flange 9, container 1 top, gets final product so that the transmission of liquid level signal can well seal again.
As shown in Figure 2, in order to adapt to the measurement of temperature of high-temp liquid, make reading device 4 that a temperature space that does not influence performance be arranged, inner core 3 is made of protection tube 11, heat-insulation layer 12, internal layer 13, protection tube 11 can be (stainless steel, glass, PVC etc.) but not only can be anticorrosion but also the material of heatproof; Heat-insulation layer 12 can be thermal insulation coatings or insulation material; Thermal insulation coatings can be applied on internal layer 13 outer walls; Insulation material can be filled between protection tube 11 and the internal layer 13.Internal layer 13 is made up of the smooth light penetrating object pipeline of inside surface, and height mark information 5 is arranged on the interior conduit.Certainly, when the liquid level temperature is high, can not adopt monotubular structure or double-barrel structure yet.
As shown in Figure 3, can read height mark information 5 accurately in order to make the reading device 4 that floats on inner core 3, increase guiding mechanism 14 in the inner core 3, when reading device 4 moved up and down like this, the read head of code channel correspondence can keep good distance.
A kind of enforcement of reading device 4 is the modes that adopt Fig. 4, it comprises a housing 15, light guide plate 17, reflective inclined-plane 21, photoelectric receiving tube 18, lighting source 22 in the housing 15, read circuit 29, battery 10, wireless radiofrequency radiating circuit 16, scatterer 20, upper magnet 26 and form, reading circuit 29 is the microcontroller chips that have multi-channel a/d converter, read on the interface of circuit 29 and be electrically connected with lighting source 22 and photoelectric receiving tube 18, lighting source 22 is used for sending light to code channel; Photoelectric receiving tube 18 is used to receive the code channel light intensity, reads circuit 29 and lighting source 22 and photoelectric receiving tube 18 by battery 10 power supplies.
In the lower end of circuit board light guide plate 17 is arranged, there is scatterer 20 center of light guide plate 17, and scatterer 20 is over against lighting source 22.
Have on the periphery of light guide plate 17 and the corresponding reflective inclined-plane 21 of code channel, plate reflectance coating on the reflective inclined-plane 21; The photoelectric receiving tube 18 that receives the code channel optical information is over against reflective inclined-plane 21; In light guide plate 17 upper magnet 26 is arranged.Battery 10 is fixed on the circuit board.
During work, it is luminous to read circuit 29 control lighting sources 22, illumination scatterer 20, send the uniform light of all directions by scatterer 20 to light guide plate 17 peripheries, each code channel on the illumination inner core, as a certain code channel is white or yellow, will reflect the light from light guide plate 17, and reflected light enters on light guide plate 17 back reflexes to corresponding code channel by reflective inclined-plane 21 the photoelectric receiving tube 18 and receives.Read the signal that circuit 29 reads photoelectric receiving tube 18, according to the size of signal, obtaining corresponding code channel is 1 or 0 (black or white, Huang), finally obtains liquid level information according to 0,1 of these all code channels of section.Obtain by reading circuit 29 liquid level information being passed through the wireless radiofrequency radiating circuit to the pulpit again after the liquid level information.
Fig. 5 is another kind of embodiment, it is fit to higher container, inner core is fixedly connected by web member 27 by more piece, because web member 27 can make inner core 3 outer walls irregular, influence magnetic float 2 and prolong inner core 3 and move up and down, the endoporus of magnetic float 2 can be more many greatly than inner core 3 external diameters like this, for magnetic float 2 is moved up and down steadily, prolong inner core 3 both sides and increase by two guide poles 24, it is fixing stretching with container up and down that magnetic float 2 both sides 23, two guide poles 24 of two guide lugs of extension pass two guide lugs, 23 backs.
Fig. 6 has provided the circuit diagram of reading device, and reading circuit 29 is the microcontroller chips that have multi-channel a/d converter, and lighting source 22 is LED, and photoelectric receiving tube 18 is 3DU, the luminous and receiving circuit that each code channel has pair of LEDs and 3DU to constitute.In order to save power consumption, only when work, the I/O eloquence of control is low level for lighting source 22 and photoelectric receiving tube 18, makes LED and 3DU work.The structure difference of Fig. 6 and Fig. 4 is that all there is illuminating circuit on each road, and it can be used for each road code channel employing and transmits and receives the collection code channel information.Measuring the range increase in order to make, is 16m as measuring range, precision 1mm, and its code channel needs 14 roads, and the A/D of microcontroller chip conversion mouth does not reach requirement like this.In order to make limited A/D conversion mouth reach its measurement requirement, can be by the different address mouth work that transmits and receives circuit of I/O mouth control, has only the luminous of corresponding address and receiving circuit work, the A/D conversion eloquence that is electrically connected with it is carried out data acquisition to it, can effectively overcome single microcontroller chip A/D conversion mouthful few problem like this.
Claims (5)
1, a kind of wireless type liquid level emasuring device, it is by forming along the height mark information of the fixing inner core of container height direction, inner core upper edge container height, the magnetic float of relative inner core location, the label information reading device in the inner core, the label information reading device body that is magnetic, corresponding the magnetic in it and magnetic float is repelled each other, the label information reading device has signal output, it is characterized in that: signal output is the wireless radiofrequency radiating circuit, sends liquid level information by the wireless radiofrequency radiating circuit outside container.
2, a kind of wireless type liquid level emasuring device according to claim 1 is characterized in that: reading device (4) position, location is by upper magnet (26) on the housing (15) of reading device (4) and the location of the lower magnet (25) on the magnetic float (2).
3, a kind of wireless type liquid level emasuring device according to claim 1, it is characterized in that: reading device (4) comprises and reads circuit (29), battery (10), wireless radiofrequency radiating circuit, upper magnet (26) in the housing (15), housing (15), reading circuit (29) is the microcontroller chip that has multi-channel a/d converter, read on the interface of circuit (29) and be electrically connected with lighting source (22) and photoelectric receiving tube (18), lighting source (22) is used for sending light to code channel; Photoelectric receiving tube (18) is used to receive the code channel light intensity, reads circuit (29) and lighting source (22) and photoelectric receiving tube (18) and is powered by battery (10).
4, a kind of wireless type liquid level emasuring device according to claim 3, it is characterized in that: reading circuit (29) is with intermittent work mode.
5, a kind of wireless type liquid level emasuring device according to claim 3, it is characterized in that: reach its measurement requirement in order to make limited A/D conversion mouth, by the different address mouth work that transmits and receives circuit of I/O mouth control, have only the luminous of corresponding address and receiving circuit work, the A/D that is electrically connected with it conversion eloquence is carried out data acquisition to it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100262956A CN100339687C (en) | 2004-07-02 | 2004-07-02 | Wireless liquid level measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100262956A CN100339687C (en) | 2004-07-02 | 2004-07-02 | Wireless liquid level measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1715840A CN1715840A (en) | 2006-01-04 |
| CN100339687C true CN100339687C (en) | 2007-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100262956A Expired - Fee Related CN100339687C (en) | 2004-07-02 | 2004-07-02 | Wireless liquid level measuring device |
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| Country | Link |
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| CN (1) | CN100339687C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM584905U (en) * | 2019-04-29 | 2019-10-11 | 張力 | Gage device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01257223A (en) * | 1988-04-07 | 1989-10-13 | Toshiba Eng Co Ltd | Detecting apparatus for water level |
| CN2293806Y (en) * | 1996-11-04 | 1998-10-07 | 陈文生 | Magnetic suspension chromatic circle level (flow) meter |
| US5950487A (en) * | 1996-09-20 | 1999-09-14 | Vista Research, Inc. | Gauge for measuring liquid levels |
| CN2499806Y (en) * | 2000-01-20 | 2002-07-10 | 林宇威 | Photoelectric float digital full numerical liquid level meter |
| CN2577260Y (en) * | 2002-11-08 | 2003-10-01 | 常红光 | Portable wireless remote-sensing tank-car liquid-level alarm |
-
2004
- 2004-07-02 CN CNB2004100262956A patent/CN100339687C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01257223A (en) * | 1988-04-07 | 1989-10-13 | Toshiba Eng Co Ltd | Detecting apparatus for water level |
| US5950487A (en) * | 1996-09-20 | 1999-09-14 | Vista Research, Inc. | Gauge for measuring liquid levels |
| CN2293806Y (en) * | 1996-11-04 | 1998-10-07 | 陈文生 | Magnetic suspension chromatic circle level (flow) meter |
| CN2499806Y (en) * | 2000-01-20 | 2002-07-10 | 林宇威 | Photoelectric float digital full numerical liquid level meter |
| CN2577260Y (en) * | 2002-11-08 | 2003-10-01 | 常红光 | Portable wireless remote-sensing tank-car liquid-level alarm |
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| Publication number | Publication date |
|---|---|
| CN1715840A (en) | 2006-01-04 |
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| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: China pay two company Sixth Engineering Co., Ltd. Assignor: Liu Xiaohui Contract record no.: 2009610000013 Denomination of invention: A wireless liquid level measurement apparatus Granted publication date: 20070926 License type: Exclusive License Open date: 20060104 Record date: 20091117 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070926 Termination date: 20150702 |
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| EXPY | Termination of patent right or utility model |