CN104089674A - Gauge table reading type wheel - Google Patents
Gauge table reading type wheel Download PDFInfo
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- CN104089674A CN104089674A CN201410348730.0A CN201410348730A CN104089674A CN 104089674 A CN104089674 A CN 104089674A CN 201410348730 A CN201410348730 A CN 201410348730A CN 104089674 A CN104089674 A CN 104089674A
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- wheel body
- sheet
- wheel
- metal film
- table reading
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Abstract
The invention discloses a gauge table reading type wheel. Type wheel reading information can be accurately collected, and the information is converted into electric signals. The gauge table reading type wheel comprises a wheel body. Metal films or pieces which are connected in a head-to-tail mode are arranged on the side face or on one of the bottom faces of the wheel body in an attaching mode. The widths of the metal films or pieces become small from the head end to the tail end. Electro-magnetic induction coils are arranged outside the wheel body and close to the positions of the metal films or pieces. Magnetic fields generated by the electro-magnetic induction coils vertically penetrate through the metal films or pieces which are right opposite to the electro-magnetic induction coils. The electro-magnetic induction coils are connected to a signal collecting circuit. Ten numbers from 0 to 9 for people to read are evenly arranged at intervals on the side face of the wheel body. Automation of collecting of gas and liquid measurement data in all measuring devices can be fully achieved, and along with the development of the Internet of Things, mechanical instrument visible readings are more needed to be converted to digital signals and are sent to a digital processing and controlling center through wireless interconnection techniques such as GPRS and CDMA or a wired network.
Description
Technical field
The present invention relates to a kind of reading character wheel that is applicable to the remote gauge tables inside counting device mechanisms such as wet type, dry-type meter or gas meter, flow meter, particularly a kind of gauging table reading character wheel that gathers character wheel reading by electromagnetic induction.
Background technology
At present, in traditional mechanical type measuring instruments such as wet-type meter, dry-type meter or diaphragm gas meter, mainly adopt Optical encoder to gather reading character wheel coded message, with this, realize gear drive summary counter teletransmission electronic direct-reading.Chinese utility model patent (application number is: 200820212544.4, name is called: the coding print wheel of counter for direct-reading telemetering remote-transmitting meter) and disclose a kind of reading character wheel of gauging table, there is following deficiency in this character wheel:
1) measured the restriction of limitation and the limited character wheel code set of narrow space in watchcase, cause character wheel in the time meeting " 9 " to enter " 0 " position, occurred reading error code because the deficiency of quantity of information causes judge carry, make it cannot be to character wheel position precise positioning;
2) even under the condition of gauging table physical dimension license, can improve character wheel positioning precision (coded data increase) by increasing photoelectric tube quantity, but the lifting that brings manufacturing cost simultaneously, and increasing of electronic devices and components also strengthens product bug risk, thereby affect the propagation and employment of traditional mechanical type gauging table teletransmission electronic direct-reading, especially direct-reading water meter and direct-reading gas meter.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of gauging table reading character wheel that can accurately gather character wheel reading information and this information is converted to electric signal.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
Gauging table reading character wheel of the present invention, comprise columned wheel body, be arranged at intervals at the carry driven tooth in bottom periphery of this wheel body and be located at the carry driving tooth in another bottom periphery of this wheel body and be positioned at the axis hole of wheel body central authorities, be close to the side of wheel body or one of them bottom surface of wheel body, be provided with end to end metal film or sheet, the width of this metal film or sheet is narrowed gradually by its head end to tail end, outside wheel body and close on the position of metal film or sheet, be provided with electromagnetic induction coil, the just metal film to it or sheet are vertically passed in the magnetic field that this electromagnetic induction coil produces, described electromagnetic induction coil is connected to signal acquisition circuit, on the side of wheel body, also interval is evenly provided with the numeral that ten confessions are manually read, this numeral is 0 to 9.
Be arranged at metal film or sheet on the side of wheel body, after launching along wheel body circumferencial direction, its shape is triangular in shape or trapezoidal.
Be arranged at the shape of metal film on one of them bottom surface of wheel body or sheet twist.
Described wheel body material is non-magnet material.
Described wheel body is by plastic material injection mo(u)lding.
Described numeral is printed on plastic film sheet, and this plastic film sheet is bonded on the side of described wheel body by bonding agent.
Described numeral is printed on plastic film sheet, and this plastic film sheet is bonded on the side of described wheel body by bonding agent.
Compared with prior art, by metal film or sheet being set on character wheel and can and can and being converted to electric signal by this electromagnetic induction coil inductance variable quantity collection with the electromagnetic induction coil in this metal film or sheet generation mutual inductance magnetic field, (this electric signal can be simulating signal in the present invention, also can be digital signal) the structure of signal acquisition circuit, make to adopt the gauging table of character wheel of the present invention to export and measure accurately numerical information, and can make in all measuring apparatus gas, the collection of liquid meter data realizes robotization completely, special in the nowadays development of Internet of Things, more need various continuous datas to be converted to digital signal and to pass through GPRS by the visual reading of machinery instrument, the wireless interconnection technologys such as CDMA or cable network are sent to digital processing and control center.The present invention is simple in structure, count accurate, with low cost and stable performance.
Brief description of the drawings
Fig. 1 is the schematic side view of gauging table reading character wheel embodiment 1 of the present invention.
Fig. 2 be in Fig. 1 A to schematic diagram.
Fig. 3 be in Fig. 1 B to schematic diagram.
Fig. 4 is that schematic diagram is launched in Fig. 1 side.
Fig. 5 is the schematic side view of gauging table reading character wheel embodiment 2 of the present invention.
Fig. 6 be in Fig. 5 C to schematic diagram.
Fig. 7 be in Fig. 5 D to schematic diagram.
Fig. 8 is eddy current effect schematic diagram.
Fig. 9 is signal acquisition circuit block diagram of the present invention.
Reference numeral is as follows:
Wheel body 1, bottom surface 2, side 3, metal film or sheet 4, electromagnetic induction coil 5, carry driven tooth 6, carry driving tooth 7, axis hole 8, stabilized voltage supply U2, single-chip microcomputer U3, impedance transformer U4, display module U5, communication or transmitter module U6.
Embodiment
Gauging table reading character wheel of the present invention is mainly used in various liquids and gases flow meters, conventionally, in single metering table, need this reading character wheel 4-8, be set up in parallel therebetween, wherein, carry driving tooth 7 on each reading character wheel is meshed with the carry driven tooth 6 on next adjacent reading character wheel, previous reading character wheel rotates a circle and stirs next adjacent reading character wheel and enter a number of words position, as Fig. 1, shown in 5, its shape is flat cylindrical wheel disc (hereinafter referred to as wheel body 1), card (i.e. these flat cylindrical upper and lower two bottom surfaces 2) central authorities at wheel body 1 are provided with axis hole 8, in a card, be evenly provided with several carry driven tooth 6 along its peripheral intervals, in another card, be provided with at least one carry driving tooth 7 along its periphery, this character wheel is arranged in gauging table by the rotating shaft being placed through in described axis hole 8.The upper even interval, wheel body 1 side 3 (being flat cylindrical side 3) of each reading character wheel arranges ten numerals that naked eyes are visual, and these ten numerals are respectively 0 to 9.
The present invention is close on a wherein side panel face of wheel body 1 side 3 or wheel body 1, be provided with end to end metal film or sheet 4, the width of this metal film or sheet 4 is narrowed gradually by its head end to tail end, outside wheel body 1, be positioned at metal film or sheet 4 near, be provided with the support plate that is loaded with electromagnetic induction coil 5, the magnetic field that this electromagnetic induction coil 5 produces is vertically through its just right metal film or sheet 4, electromagnetic induction coil 5 joins with signal acquisition circuit, when work, this reading character wheel takes metal film or sheet 4 rotates around described rotating shaft, and electromagnetic induction coil 5 is fixed in gauging table and keeps fixed range with described metal film or sheet 4.
The present invention utilizes eddy current effect to detect reading character wheel position, and the signal that electromagnetic induction coil 5 is collected converts the output of electric digital signal amount to, thereby realizes conversion and the transmission to the dynamic position of reading character wheel signal.
As shown in Figure 8, when adding alternating voltage signal u to electromagnetic induction coil 5 two ends
1after, just there is exchange current I
1flow through this coil 5, exchange current I
1in this coil 5, produce an alternating magnetic field H
1, known according to electromagnetic induction principle, alternating magnetic field H
1will with the body of the just right metal film of this electromagnetic induction coil 5 or sheet 4 in produce an eddy current I
2, this eddy current I
2can produce again a counter magnetic field H
2offset a part of H
1, and coil 5 will maintain original alternating magnetic field H
1value just must strengthen exchange current I
1value.From equivalent viewpoint, there is variation in the inductance L, impedance Z and the quality factor q value that are just equivalent to coil 5.Obviously eddy current I
2larger, the variation of inductance L, impedance Z and quality factor q value is also larger, and they are all eddy current I
2function.Eddy current I
2size depend on geometric configuration, the exchange current I of coil 5
1magnet excitation frequency f, environment temperature, metal film or the distance X of sheet 4 and coil 5, and the electricalresistivityρ of metal film or sheet 4, magnetic permeability u
r, the parameter such as geometric configuration S.If a parameter change in control above-mentioned parameter, all the other neither become, and so just can form the various sensors of displacement, testing temperature, survey hardness etc.The present invention has selected the geometric configuration S of metal film wherein or sheet 4 as variable, and all the other supposition are constant, utilize signal acquisition circuit that it is finally for conversion into voltage or electric current output, then accurately detect the dynamic position of reading character wheel.
Wheel body 1 material of the present invention is non-magnet material, is preferably by plastic material injection mo(u)lding.Described metal film or sheet are made by conductive metallic material, and it is made that the present invention is preferably copper material.
As shown in Figure 9, described signal acquisition circuit comprises that stabilized voltage supply U2, single-chip microcomputer U3, impedance transformer U4, display module U5 communicate by letter with signal or transmitter module U6, wherein, described electromagnetic induction coil 5 joins with impedance transformer U4, stabilized voltage supply U2 provides operating voltage for single-chip microcomputer U3 and impedance transformer U4, the signal that single-chip microcomputer U3 is received both can show by display module U5, also can be emitted to measure control center by communication or transmitter module U6.
Gauging table reading character wheel of the present invention coordinates with electromagnetic induction coil 5, can determine the relative space relation forming between digital indicating value (the corresponding reading character wheel anglec of rotation), carry driven tooth 6, carry driving tooth 7 and the electromagnetic induction physical quantity on reading character wheel, gauging table reading character wheel often rotates to an angle, be arranged on the reading character wheel exportable level signal corresponding with circumference angle of electromagnetic induction coil 5 nearby, thereby can record the indicating value on reading character wheel opposite position according to the actual angle position of this gauging table reading character wheel.Can replace the reading character wheel of the interior counter mechanism of traditional mechanical gauging tables such as existing various wet type, dry-type meter or gas meter, flow meter.
Embodiment 1
As shown in Figure 1,2,3, 4, in the present embodiment, metal film or sheet 4 are arranged at wheel body 1 side 3, after this metal film or sheet 4 launch along wheel body 1 circumferencial direction, shape is triangular in shape or trapezoidal, is preferably isosceles triangle, right-angle triangle, isosceles trapezoid or right-angled trapezium.
Described electromagnetic induction coil 5 place planes parallel with the tangent plane of wheel body 1 side 3.
Described numeral is printed on plastic film sheet, and this plastic film sheet is bonded in by bonding agent on the side 3 of described wheel body 1, and wherein, in 0-9, different width regions on each corresponding described metal film of numeral or sheet 4, immobilizes therebetween.
In the time that this reading character wheel rotates, the electric signal that described electromagnetic induction coil 5 two ends are obtained also changes thereupon, obtain thus the numeral that illustrates on the reading character wheel corresponding with this electric signal, thereby, can accurately know that this reading character wheel moment of taking up an official post is being just several to the numeral of electromagnetic induction coil 5 positions, and can be electric signal output by this digital conversion or show.
The advantage of the present embodiment is accuracy of reading, stable, and space used is less.
Embodiment 2
As shown in Fig. 5,6,7, position that the present embodiment arranges except metal film or sheet 4 and electromagnetic induction coil 5 is different from embodiment 1, other is all identical.
Metal film in the present embodiment or sheet 4 are arranged in one of them card of reading character wheel wheel body 1, its shape twist, described electromagnetic induction coil 5 is positioned near this metal film or sheet 4, and electromagnetic induction coil 5 place planes are parallel with this metal film or sheet 4 place cards.
The present embodiment compared with the advantage of embodiment 1 be make relatively simple.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, its framework form can be flexible and changeable, can subseries product.Just make some simple deduction or replace, all should be considered as belonging to the present invention by the definite scope of patent protection of submitted to claims.
Claims (7)
1. a gauging table reading character wheel, comprise columned wheel body (1), be arranged at intervals at the carry driven tooth (6) on this (1) bottom surface of wheel body (2) periphery and be located at the carry driving tooth (7) on the periphery of another bottom surface of this wheel body (1) (2) and be positioned at the axis hole (8) of wheel body (1) central authorities, it is characterized in that: be close to the side (3) of wheel body (1) or one of them bottom surface (2) of wheel body (1), be provided with end to end metal film or sheet (4), the width of this metal film or sheet (4) is narrowed gradually by its head end to tail end, outside wheel body (1) and close on the position of metal film or sheet (4), be provided with electromagnetic induction coil (5), the just metal film to it or sheet (4) are vertically passed in the magnetic field that this electromagnetic induction coil (5) produces, described electromagnetic induction coil (5) is connected to signal acquisition circuit, upper also interval, side (3) in wheel body (1) is evenly provided with the numeral that ten confessions are manually read, this numeral is 0 to 9.
2. gauging table reading character wheel according to claim 1, it is characterized in that: be arranged at metal film or sheet (4) on the side (3) of wheel body (1), after launching along wheel body (1) circumferencial direction, its shape is triangular in shape or trapezoidal.
3. gauging table reading character wheel according to claim 1, is characterized in that: be arranged at the shape of metal film on one of them bottom surface of wheel body (1) (2) or sheet (4) twist.
4. according to the gauging table reading character wheel described in any one in claim 1-3, it is characterized in that: described wheel body (1) material is non-magnet material.
5. gauging table reading character wheel according to claim 4, is characterized in that: described wheel body (1) is by plastic material injection mo(u)lding.
6. gauging table reading character wheel according to claim 4, is characterized in that: described numeral is printed on plastic film sheet, this plastic film sheet is bonded on the side (3) of described wheel body (1) by bonding agent.
7. gauging table reading character wheel according to claim 5, is characterized in that: described numeral is printed on plastic film sheet, this plastic film sheet is bonded on the side (3) of described wheel body (1) by bonding agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410348730.0A CN104089674A (en) | 2014-07-22 | 2014-07-22 | Gauge table reading type wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410348730.0A CN104089674A (en) | 2014-07-22 | 2014-07-22 | Gauge table reading type wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104089674A true CN104089674A (en) | 2014-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410348730.0A Pending CN104089674A (en) | 2014-07-22 | 2014-07-22 | Gauge table reading type wheel |
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| Country | Link |
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| CN (1) | CN104089674A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104897228A (en) * | 2015-06-29 | 2015-09-09 | 成都千嘉科技有限公司 | Direct-reading counter for magnetic-induction shaft-breaking character wheel |
| CN106388672A (en) * | 2015-07-31 | 2017-02-15 | 金红叶纸业集团有限公司 | Distributor and consumable material monitoring system adopting same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1928899A (en) * | 2006-01-06 | 2007-03-14 | 宁波水表股份有限公司 | Mechanical counter for electromagnetic induction coding |
| CN101949718A (en) * | 2010-08-11 | 2011-01-19 | 郑州水业科技发展股份有限公司 | Counter coded character wheel and water meter |
| CN103791973A (en) * | 2014-03-07 | 2014-05-14 | 四川恒芯科技有限公司 | Non-core coil induction type meter data collection device |
| CN204007757U (en) * | 2014-07-22 | 2014-12-10 | 陈健 | Gauging table reading character wheel |
-
2014
- 2014-07-22 CN CN201410348730.0A patent/CN104089674A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1928899A (en) * | 2006-01-06 | 2007-03-14 | 宁波水表股份有限公司 | Mechanical counter for electromagnetic induction coding |
| CN101949718A (en) * | 2010-08-11 | 2011-01-19 | 郑州水业科技发展股份有限公司 | Counter coded character wheel and water meter |
| CN103791973A (en) * | 2014-03-07 | 2014-05-14 | 四川恒芯科技有限公司 | Non-core coil induction type meter data collection device |
| CN204007757U (en) * | 2014-07-22 | 2014-12-10 | 陈健 | Gauging table reading character wheel |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104897228A (en) * | 2015-06-29 | 2015-09-09 | 成都千嘉科技有限公司 | Direct-reading counter for magnetic-induction shaft-breaking character wheel |
| CN106388672A (en) * | 2015-07-31 | 2017-02-15 | 金红叶纸业集团有限公司 | Distributor and consumable material monitoring system adopting same |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141008 |
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| RJ01 | Rejection of invention patent application after publication |