CN103791973B - Non-core coil induction type meter data collection device - Google Patents
Non-core coil induction type meter data collection device Download PDFInfo
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- CN103791973B CN103791973B CN201410083151.8A CN201410083151A CN103791973B CN 103791973 B CN103791973 B CN 103791973B CN 201410083151 A CN201410083151 A CN 201410083151A CN 103791973 B CN103791973 B CN 103791973B
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- 230000006698 induction Effects 0.000 title claims abstract description 47
- 238000013480 data collection Methods 0.000 title abstract 5
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- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000001939 inductive effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 5
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- 230000005622 photoelectricity Effects 0.000 description 4
- 239000008399 tap water Substances 0.000 description 4
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- 230000001070 adhesive effect Effects 0.000 description 3
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- 238000009434 installation Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
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- 230000005611 electricity Effects 0.000 description 2
- 235000019988 mead Nutrition 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
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- 239000000567 combustion gas Substances 0.000 description 1
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- 238000004088 simulation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The invention relates to a remote meter reading system and provides a non-core coil induction type meter data collection device. The device solves the problems that a data collection device in an existing remote meter reading system is complex in technology, low in metering accuracy and prone to generating errors. According to the technical scheme, the non-core coil induction type meter data collection device comprises a character wheel and is characterized in that the device further comprises a non-contact inductive transducer and a peripheral circuit, the non-contact inductive transducer comprises a specially-shaped sheet metal part and a non-core induction coil, the specially-shaped sheet metal part is arranged on the side face of the character wheel, deformation of the specially-shaped sheet metal part corresponds to figures on the outer circle of the character wheel, the non-core induction coil is installed at the same side with the specially-shaped sheet metal part relative to the character wheel and corresponds to the specially-shaped sheet metal part, and the non-core induction coil is connected with the peripheral circuit. The non-core coil induction type meter data collection device has the advantages of being simple in technology and accuracy in data.
Description
Technical field
The present invention relates to the data acquisition technology in long-distance meter-reading system, more particularly to long-distance meter-reading system.
Background technology
Common gas meter, flow meter or tap water meter is mechanical gas table or mechanical tap water meter, and its counting principle is to utilize
Combustion gas or the flowing of current drive count code wheel to rotate and are counted, and to realize automatic data logging, need the rotation by code wheel is counted
It is converted into electric signal.Remote meter reading seen in the market is broadly divided into two classes, and a class is pulsed, and another kind of is straight
Reading formula.
The sensor of pulsed long-distance meter-reading system, i.e. data acquisition unit, are mainly made up of tongue tube and magnet steel, by magnetic
Steel is arranged on character wheel, when character wheel is rotated, magnet steel also concomitant rotation, magnet steel near tongue tube when, the shell fragment adhesive of tongue tube,
The shell fragment of tongue tube disconnects when magnet steel leaves tongue tube, and Acquisition Circuit passes through the adhesive of the shell fragment for judging tongue tube or off-state
To realize counting.Pulsed long-distance meter-reading system is primarily present following defect：1）Count inaccurate, when gas meter, flow meter or tap water meter
When nearby having external magnetic field to disturb, data are inaccurate, easily shake when the shell fragment adhesive or disconnection of tongue tube, these factors
Will cause to count inaccurate；2）Pulse sensor is due to being that by the way of accumulated counts, Acquisition Circuit needs long-term confession
Electricity, Acquisition Circuit cannot work if power-off, pulse leakage meter, the phenomenon that data can be caused on the low side.
Direct-reading long-distance meter-reading system mainly has two kinds of resistance-type and photo-electric, is referred to as resistance-type direct-reading gage and photoelectricity
Formula direct-reading gage.
The operation principle of data acquisition unit is in resistance-type direct-reading gage：By on character wheel install hard contact, with
Different Ohmic contacts on corresponding circuit board, the position of character wheel, resistance-type direct-reading gage reality are recognized by different resistance values
Existing method is that circuit board is fixedly mounted between the character wheel of mechanical counter, and 10 fan-shaped sheet metals, group are uniformly distributed on circuit board
Into with the sizable circle of character wheel, the sheet metal connects different resistance, hard contact installed on each character wheel, can after assembling
With circuit board contacts, so when character wheel turns to a certain position, contact just contacts different circuit boards, can produce different electricity
Resistance, the numeral on the corresponding counter of each resistance value, then obtains corresponding data by Acquisition Circuit process, completes meter reading
Operation.The characteristics of resistance-type direct-reading gage is：Data on character wheel can directly be read from the data of Acquisition Circuit output, at ordinary times without
Power supply is needed, principle is simple, it is easy to realize, in general device can be embedded in table, less to former table structural modification, this mode
The direct-reading of wheel digital is realized, but there is also some problems：1）Measurement problem, character wheel belongs to the metering note of resistance-type direct-reading gage
Recording device, when there is external force to be in contact with it, can affect metering performance, and this needs resistance-type direct-reading gage producer to redesign resistance-type
To reduce friction, this way of contact can produce mobile shadow to the character wheel group of direct-reading gage through long-time friction to the rotation of character wheel
Ring；2）Technological problemses, because this contact is Mechanical Contact, its contact force and position depend on installation process, and character wheel group has solid
Some gap errors, after increasing circuit board, circuit board is nearer with the Edge Distance of character wheel, and after installation is complete high-order character wheel cannot
Detection, so can produce affects to rotate because installation accuracy causes high-order character wheel and circuit board to scrape, meanwhile, installation procedure and essence
Degree be required to it is higher, be unfavorable for batch production；3）Operation problem, because contact is mainly recognized by resistance mode, and
Resistance can with temperature, contact point and change, the temperature drift of resistance and the bad contact of contact may result in measurement blind area or
Erroneous judgement, longtime running is it is difficult to ensure that reliability, produces misread phenomenon sometimes.
The operation principle of data acquisition unit is in photo-electric direct-reading gage：In general gas table or the counter of tap water meter
Character wheel prints the edge of 0～9 position and republishes specific markers（Or open various sizes of hole on character wheel）, in the fixed light in its periphery
Electric transducer and interlock circuit, during externally fed meter reading, by photoelectric sensor the state of specific markers " having " and "None" are judged,
Judge to obtain the reading of character wheel by assembly coding（That is window value）.The principle of this method is no longer the simulation meter of resistance-type
Amount mode, but by character wheel founding mathematical models, calculating through combination, draw correct reading.The photoelectricity for adopting at present
Formula direct-reading gage mainly has photoelectricity to penetrating（Transmission）Two kinds of formula and photo-electric reflection type, it differs primarily in that frame for movement and mathematics are calculated
Method is different, and photoelectricity is to penetrating（Transmission）Formula is that the mode of photoelectric device and circuit board is installed between character wheel, and photo-electric reflection type is in word
The mode of photoelectric device and circuit board is installed around wheel.Photo-electric direct-reading gage has following characteristics：Directly read counter code-disc number
Word（I.e. each character wheel window numeral）" window value " is obtained, the parameters such as the setting table truth of a matter, table constant is not required in table, without the need for storing number
According to, there are no cumulative errors, " meter reading " is truly realized, finish accumulated pulse, the history of conversion numerical value, electronics in direct-reading gage
Part does not have Mechanical Contact to be kept completely separate with the device such as counter, does not affect measuring accuracy.Photoelectric direct-reading meter is overcoming resistance
While some shortcomings of formula direct-reading gage yet there is following defect in itself：1）Interference free performance：Using infrared light photoelectric sensing
Device, infrared receiving tube is highly susceptible to the impact of extraneous infrared light or natural light, even can cause sensing in extreme circumstances
Device cannot work completely；2）Data accuracy：Present one character wheel of photo-electric direct-reading gage typically adopts five pairs of infrared sensors
Come " reading ", in theory five pairs of sensors can at most differentiate 32 kinds of states, but character wheel is particularly high-order character wheel in a little model
Rotation in enclosing is a continuous process, and the character wheel " reading " of this when can only be more running into by software come " estimation "
Simultaneously software " estimations " data out are often insecure in the case of carry for individual character wheel, in the application process of reality
It is found that such problem；3）Complex process, needs install many electrooptical devices on the character wheel of mechanical counter, also result in
It is relatively costly.The content of the invention
The technical problem to be solved, in order to solve present long-distance meter-reading system in data acquisition unit
Complex process and the not high shortcoming for error easily occur of measuring accuracy, there is provided a kind of coreless coil induction type gauge outfit data acquisition dress
Put.
The present invention solves the technical problem, and the technical scheme of employing is that the data acquisition of coreless coil induction type gauge outfit is filled
Put, including character wheel, it is characterised in that also including contactless inductance sensor and peripheral circuit, the contactless inductance is passed
Sensor includes profiled metal sheet metal component and coreless induction coil, and the profiled metal sheet metal component is arranged on character wheel side, described different
The deformation of shape sheet metal part is digital corresponding with character wheel outer ring, and it is relative that coreless induction coil is arranged on profiled metal sheet metal component
The homonymy of character wheel, corresponding with profiled metal sheet metal component, coreless induction coil is connected with peripheral circuit.
Specifically, the profiled metal sheet metal component is the not closed circle structure of inductance gradual change, and its center of circle is concentric with character wheel.
Further, the profiled metal sheet metal component is relative to the flat shape of character wheel side：By Archimedian screw
The closed interval of line one, the line segment of a spiral of Archimedes two and composition, the extended line of the line segment intersects with the character wheel center of circle, Ah
The hand of spiral of base Mead helix one and spiral of Archimedes two is conversely, the starting point of spiral of Archimedes one is leaned on for line segment
The one end in nearly first center of circle, its terminal intersects with the starting point of spiral of Archimedes two, is designated as summit, spiral of Archimedes two
Terminal for line segment the other end, the midpoint of the summit and line segment is all located at the center of circle for the character wheel center of circle, and radius is on the circle of R,
The midpoint of the line segment is less than the center of circle for the character wheel center of circle to the beeline on the summit and radius is the 1/10 of the circumference of R,
And the shortest route on the line segment two ends and summit is not by spiral of Archimedes one, spiral of Archimedes two and the line segment
In the closed interval for being constituted.
Specifically, the coreless induction coil is corresponding with profiled metal sheet metal component refers to that coreless induction coil is remained
Its center of circle is in and radius concentric with character wheel on the circle of R.
Further, the distance between the coreless induction coil and profiled metal sheet metal component are less than coreless induction coil
1.5 times of external diameter.
Specifically, the thickness of the profiled metal sheet metal component is 0.5 millimeter.
Further, the profiled metal sheet metal component is aluminum profiled metal sheet metal component or stainless steel profiled metal metal plate
Golden part or conductive ink profiled metal sheet metal component.
The invention has the beneficial effects as follows, by above-mentioned coreless coil induction type gauge outfit data acquisition unit, it is using abnormity
Sheet metal part senses in real time with coreless induction coil, and by induced flux information the data shown by character wheel are accurately conversed
Information, process is simple, data are accurate, and strong interference immunity.
Description of the drawings
Fig. 1 is that coreless coil induction type gauge outfit data acquisition unit is arranged on the signal on character wheel in the embodiment of the present invention
Figure.
Wherein, 101 is profiled metal sheet metal component, and 102 is coreless induction coil, and 103 is character wheel.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment, technical scheme is described in detail.
The present invention coreless coil induction type gauge outfit data acquisition unit, by character wheel 103, contactless inductance sensor and
Peripheral circuit is constituted, wherein, contactless inductance sensor includes profiled metal sheet metal component 101 and coreless induction coil 102, different
Shape sheet metal part 101 is arranged on the side of character wheel 103, the deformation of the profiled metal sheet metal component 101 and the number of the outer ring of character wheel 103
Word is corresponding, and coreless induction coil 102 is arranged on the homonymy of the relative character wheel 103 of profiled metal sheet metal component 101, with profiled metal metal plate
Golden part 101 is corresponding, and coreless induction coil 102 is connected with peripheral circuit.
Embodiment
The schematic diagram that the coreless coil induction type gauge outfit data acquisition unit of this example is arranged on character wheel is as shown in Figure 1.
The coreless coil induction type gauge outfit data acquisition unit of this example, by character wheel 103, contactless inductance sensor and outer
Circuit composition is enclosed, wherein, contactless inductance sensor includes profiled metal sheet metal component 101 and coreless induction coil 102, abnormity
Sheet metal part 101 is arranged on the side of character wheel 103, the deformation of the profiled metal sheet metal component 101 and the numeral of the outer ring of character wheel 103
Corresponding, coreless induction coil 102 is arranged on the homonymy of the relative character wheel 103 of profiled metal sheet metal component 101, with profiled metal panel beating
Part 101 is corresponding, and coreless induction coil 102 is connected with peripheral circuit.
Here, profiled metal sheet metal component 101 is the not closed circle structure of inductance gradual change, and its center of circle is concentric with character wheel 103,
As shown in figure 1, profiled metal sheet metal component 101 is relative to the flat shape of character wheel side：By spiral of Archimedes one, A Ji
The closed interval of the line segment of a Mead helix two and composition, the extended line of the line segment intersects with the character wheel center of circle, Archimedes's spiral shell
The hand of spiral of spin line one and spiral of Archimedes two is conversely, the starting point of spiral of Archimedes one is justified for line segment near first
One end of the heart, its terminal intersects with the starting point of spiral of Archimedes two, is designated as summit, and the terminal of spiral of Archimedes two is
It is the character wheel center of circle that the midpoint of the other end of line segment, the summit and line segment is all located at the center of circle, and radius is the line segment on the circle of R
The beeline on midpoint to the summit be that the character wheel center of circle and radius are the 1/10 of the circumference of R, and the line segment less than the center of circle
The shortest route on two ends and summit be not made up of spiral of Archimedes one, spiral of Archimedes two and the line segment
In closed interval.Then now coreless induction coil 102 is corresponding with profiled metal sheet metal component 101 refers to coreless induction coil 102
Its center of circle is remained on the circle that and radius concentric with character wheel is R, and if coreless induction coil 102 and profiled metal sheet metal component
The distance between 101 less than 1.5 times of the external diameter of coreless induction coil 102 when, it can have preferable inductive effects, profiled metal
The thickness of sheet metal component 101 can be 0.5 millimeter of aluminum profiled metal sheet metal component or stainless steel profiled metal sheet metal component or lead
Electric ink profiled metal sheet metal component.
Due to the deformation of profiled metal sheet metal component 101 it is digital corresponding with the outer ring of character wheel 103, therefore when character wheel rotate,
Its window value（That is display data）When changing, coreless induction it is coil-induced to magnetic flux necessarily change, so as to
The window value of current character wheel can be gone out by the change calculations of magnetic flux.
Claims (5)
1. coreless coil induction type gauge outfit data acquisition unit, including character wheel, it is characterised in that also pass including contactless inductance
Sensor and peripheral circuit, the contactless inductance sensor includes profiled metal sheet metal component and coreless induction coil, described different
Shape sheet metal part is arranged on character wheel side, the deformation of the profiled metal sheet metal component and digital corresponding, the nothing of character wheel outer ring
Core induction coil is arranged on homonymy of the profiled metal sheet metal component with respect to character wheel, coreless induction corresponding with profiled metal sheet metal component
Coil is connected with peripheral circuit, and the profiled metal sheet metal component is the not closed circle structure of inductance gradual change, its center of circle and character wheel
With one heart, the profiled metal sheet metal component is relative to the flat shape of character wheel side：By spiral of Archimedes one, Archimedes
The closed interval of the line segment of a helix two and composition, the extended line of the line segment intersects with the character wheel center of circle, spiral of Archimedes
One with the hand of spiral of spiral of Archimedes two conversely, the starting point of spiral of Archimedes one is line segment near the character wheel center of circle
One end, its terminal intersects with the starting point of spiral of Archimedes two, is designated as summit, and the terminal of spiral of Archimedes two is line segment
The other end, the midpoint of the summit and line segment is all located at the center of circle for the character wheel center of circle, and radius is on the circle of R, in the line segment
Point is less than the center of circle for the character wheel center of circle to the beeline on the summit and radius is the 1/10 of the circumference of R, and the line segment two ends
With the shortest route on summit not in the closing being made up of spiral of Archimedes one, spiral of Archimedes two and the line segment
In interval.
2. coreless coil induction type gauge outfit data acquisition unit according to claim 1, it is characterised in that the coreless induction
The coil central point for referring to coreless induction coil corresponding with profiled metal sheet metal component remain at the center of circle for the character wheel center of circle and
Radius is on the circle of R.
3. coreless coil induction type gauge outfit data acquisition unit according to claim 2, it is characterised in that the coreless induction
1.5 times less than coreless induction coil outer diameter of the distance between coil and profiled metal sheet metal component.
4. coreless coil induction type gauge outfit data acquisition unit according to claim 1, it is characterised in that the profiled metal
The thickness of sheet metal component is 0.5 millimeter.
5. the coreless coil induction type gauge outfit data acquisition unit according to claim 1 or 2 or 3 or 4, it is characterised in that institute
Profiled metal sheet metal component is stated for aluminum profiled metal sheet metal component or stainless steel profiled metal sheet metal component or conductive ink system abnormity
Sheet metal part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410083151.8A CN103791973B (en) | 2014-03-07 | 2014-03-07 | Non-core coil induction type meter data collection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410083151.8A CN103791973B (en) | 2014-03-07 | 2014-03-07 | Non-core coil induction type meter data collection device |
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| Publication Number | Publication Date |
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| CN103791973A CN103791973A (en) | 2014-05-14 |
| CN103791973B true CN103791973B (en) | 2017-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410083151.8A Expired - Fee Related CN103791973B (en) | 2014-03-07 | 2014-03-07 | Non-core coil induction type meter data collection device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089674A (en) * | 2014-07-22 | 2014-10-08 | 陈健 | Gauge table reading type wheel |
| CN106643822B (en) * | 2016-12-23 | 2020-05-12 | 艾特仪表科技（深圳）有限公司 | Character wheel encoder and direct reading method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2943184A1 (en) * | 1979-10-25 | 1981-05-07 | AOA Apparatebau Gauting GmbH, 8035 Gauting | Driven wheel fluid flow meter - has inductive speed measurement consisting of sensors and elements of different magnetic resistance |
| CN201780133U (en) * | 2009-12-02 | 2011-03-30 | 苏州银河龙芯科技有限公司 | Magnetic sensing direct reading character wheels of hydroscope |
| CN102200459A (en) * | 2010-03-26 | 2011-09-28 | 河南新天科技股份有限公司 | Direct reading gauge |
| CN202533130U (en) * | 2012-04-23 | 2012-11-14 | 陈健 | Number reading wheel of gauge |
| CN203719722U (en) * | 2014-03-07 | 2014-07-16 | 四川恒芯科技有限公司 | Coreless coil induction type header data acquisition device |
-
2014
- 2014-03-07 CN CN201410083151.8A patent/CN103791973B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2943184A1 (en) * | 1979-10-25 | 1981-05-07 | AOA Apparatebau Gauting GmbH, 8035 Gauting | Driven wheel fluid flow meter - has inductive speed measurement consisting of sensors and elements of different magnetic resistance |
| CN201780133U (en) * | 2009-12-02 | 2011-03-30 | 苏州银河龙芯科技有限公司 | Magnetic sensing direct reading character wheels of hydroscope |
| CN102200459A (en) * | 2010-03-26 | 2011-09-28 | 河南新天科技股份有限公司 | Direct reading gauge |
| CN202533130U (en) * | 2012-04-23 | 2012-11-14 | 陈健 | Number reading wheel of gauge |
| CN203719722U (en) * | 2014-03-07 | 2014-07-16 | 四川恒芯科技有限公司 | Coreless coil induction type header data acquisition device |
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| CN103791973A (en) | 2014-05-14 |
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