CN104897228A - Direct-reading counter for magnetic-induction shaft-breaking character wheel - Google Patents
Direct-reading counter for magnetic-induction shaft-breaking character wheel Download PDFInfo
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- CN104897228A CN104897228A CN201510365177.6A CN201510365177A CN104897228A CN 104897228 A CN104897228 A CN 104897228A CN 201510365177 A CN201510365177 A CN 201510365177A CN 104897228 A CN104897228 A CN 104897228A
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Abstract
The invention relates to the field of measuring devices, in particular to a direct-reading counter for a magnetic-induction shaft-breaking character wheel. The direct-reading counter for the magnetic-induction shaft-breaking character wheel is used for obtaining a rotary angle of the character wheel by measuring the rotary angle of ring-shaped magnetic steel coaxially arranged on the center of the character wheel, and avoiding the problem that the reading errors cannot be directly judged due to wrong errors and photoelectric direct-reading is easy to affect by outside illumination variations when one pair or more pairs of photoelectric pair transistors are damaged by adopting a photoelectric direct-reading mode; meanwhile, the character wheel reading precision is relatively high by adopting a mode of inducting the rotary angle of the character wheel, the service life is longer, and the performances are more stable.
Description
Technical field
The present invention relates to a kind of measurement mechanism field, particularly a kind of magnetic strength off-axis character wheel direct-reading counter.
Background technology
The data acquisition of current water, gas meter is gathered by character wheel counter mostly, and is photo-electronic directly reading or tongue tube induction reading to the reading mode majority of character wheel; Wherein, adopt the mode of photo-electronic directly reading to carry out reading to character wheel and there is following problem: (1) photoelectric tube is fragile, and the photoelectric tube of damage there will be the mistake that correctly can not judge reading; (2) extraneous illumination has impact for photo-electronic directly reading, reading can be caused to be forbidden or reading exception when direct sunlight; (3) photoelectric tube has certain light decay after working for a long time, will directly have influence on the correctness of photoelectric reading.Tongue tube induction reading then has tongue tube in installation process easily to break and the problem be not easily found of breaking.
Summary of the invention
Goal of the invention of the present invention is that overcoming photo-electronic directly reading character wheel counter is subject to the problem that ambient light conditions affects or tongue tube sense counter installation process tongue tube easily breaks, a kind of angle rotated by measuring character wheel is adopted to obtain the counter of character wheel reading: the present invention conveniently measures character wheel selected angle in addition, be different from prior art and character wheels all in character wheel group are connected in series on the same axis, but adopt off-axis mode, namely in character wheel group, each character wheel is used alone the character wheel axis body rotation of oneself.
To achieve these goals, the technical solution used in the present invention is:
A kind of magnetic strength off-axis character wheel direct-reading counter, comprises,
Character wheel group, comprise more than two and coaxially (coaxially refer to that the position of all character wheels in character wheel group is arranged for coaxial herein, not refer to that all character wheels are arranged on the same axis) character wheel that is set up in parallel, described character wheel comprises character wheel body, the circumferential edges of a side of described character wheel body is evenly equipped with a circle stepping to dash forward tooth, opposite side circumferential edges is provided with carry and dashes forward tooth; Connected by carry gear between adjacent character wheel in described character wheel group; Described character wheel body circle centre position is provided with the character wheel axis body vertical with institute character wheel body, and described print wheel shaft body length is greater than the thickness of described character wheel body and stretches out to described character wheel body both sides;
In described plural character wheel, the character wheel body side of at least one character wheel is inlaid with the annular magnetic steel coaxial with described character wheel body;
Base plate, described base plate is set side by side with and described character wheel supporting frame group one to one, each supporting frame group includes symmetrically arranged bracing frame one and bracing frame two, and support frame as described above one and bracing frame two are provided with the semi-circular recesses agreed with mutually with described character wheel axis body size, shape; Described semi-circular recesses is for placing the described character wheel axis body on corresponding character wheel;
Angle detection unit, described character wheel body side is provided with the character wheel one_to_one corresponding of annular magnetic steel, itself and described character wheel be arranged in parallel, for when described annular magnetic steel rotates with described character wheel, obtain the angle of described character wheel rotation according to the changes of magnetic field of described annular magnetic steel;
Data processing unit, for receiving the character wheel rotational angle data that described angle detection unit spreads out of, and calculates character wheel reading according to these data.
Further, described angle detection unit comprises,
Angular transducer, for obtaining the angle that described character wheel rotates according to the changes of magnetic field of described annular magnetic steel;
Collection plate, for installing described angular transducer and the output signal of described angular transducer being spread out of.
Further, described angle detection unit is also provided with magnetic shielding cover away from the side of described character wheel; The work of described magnetic shielding cover for preventing the magnetic force away from described character wheel side from disturbing described angle detection unit.
Preferably, described annular magnetic steel is bipolarity radial magnetizing ring alnico.
Preferably, described annular magnetic steel diameter is 9.02mm to 9.06mm
Further, the circumference side of character wheel body is divided into 0 ~ 90 digit position.
Further, the character wheel body side of all character wheels in described character wheel group is all coaxially fixedly installed an annular magnetic steel;
Meanwhile, described angle detection unit and one_to_one corresponding identical with described character wheel quantity.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
Magnetic strength off-axis character wheel direct-reading counter provided by the invention obtains the anglec of rotation of character wheel by measuring the anglec of rotation being coaxially arranged on the annular magnetic steel at character wheel center, when avoiding the photoelectric tube easily occurred when adopting photo-electronic directly reading mode to damage a pair or several, occur that error code self cannot judge that error in reading and photo-electronic directly reading are subject to ambient light according to variable effect problem; The precision of mode to character wheel reading of the induction character wheel anglec of rotation that the present invention simultaneously adopts is higher, and the life-span is longer, and performance is more stable.
Accompanying drawing explanation
Fig. 1 is the perspective view (not containing carry gear) of the embodiment of the present invention.
Fig. 2 goes back angle detection unit and corresponding character wheel position view in the embodiment of the present invention.
Fig. 3 is character wheel structural perspective in the embodiment of the present invention.
Fig. 4 is character wheel structure front elevation in the embodiment of the present invention.
Fig. 5 is the right view of Fig. 3.
Fig. 6 is angular transducer position scheme of installation on collection plate in the embodiment of the present invention.
Fig. 7 is the three-dimensional structure diagram (containing carry gear) of another angle of Fig. 1.
Mark in figure: 1-character wheel group, 11-character wheel, 111-character wheel body, 112-character wheel axis body, 113 annular magnetic steels, 114-stepping is dashed forward tooth, 115-carry is dashed forward tooth, 12-carry gear, 2-base plate, 21-supporting frame group, 211-bracing frame one, 212-bracing frame two, 3-angle detection unit, 31-angular transducer, 32-collection plate, 33-magnetic shielding cover.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
embodiment 1:as shown in Figures 1 to 7, the present embodiment provides a kind of magnetic strength off-axis character wheel direct-reading counter, comprises,
Character wheel group 1, comprise eight and coaxially (coaxially refer to that the position of all character wheels in character wheel group is arranged for coaxial herein, not refer to that all character wheels are arranged on the same axis) character wheel 11 that is set up in parallel, described character wheel comprises character wheel body 111, the circumferential edges of a side of described character wheel body 111 is evenly equipped with a circle stepping to dash forward tooth 114, opposite side circumferential edges is provided with carry and dashes forward tooth 115; Connected by carry gear 12 between adjacent character wheel 11 in described character wheel group 1; Described character wheel body 111 circle centre position is provided with the character wheel axis body 112 vertical with institute character wheel body 111, and described character wheel axis body 112 length is greater than the thickness of described character wheel body 111 and stretches out to described character wheel body 111 both sides;
In described eight character wheels 11, character wheel body 111 side of five character wheels 11 is had to be inlaid with the annular magnetic steel 113 coaxial with described character wheel body 111;
Base plate 2, described base plate is set side by side with and described character wheel 11 supporting frame group 21 one to one, each supporting frame group 21 includes symmetrically arranged bracing frame 1 and bracing frame 2 212, and support frame as described above 1 and bracing frame 2 212 are provided with the semi-circular recesses agreed with mutually with described character wheel axis body 112 size, shape; Described semi-circular recesses is for placing the described character wheel axis body 112 on corresponding character wheel 11;
Angle detection unit 3, described character wheel body 111 side is provided with character wheel 11 one_to_one corresponding of annular magnetic steel 113, itself and described character wheel 11 be arranged in parallel, for when described annular magnetic steel 113 rotates with described character wheel 11, obtain the angle of described character wheel 11 rotation according to the changes of magnetic field of described annular magnetic steel 113; Accordingly, in the present embodiment, described angle detection unit 3 comprises five groups.
Data processing unit (not showing in figure), for receiving the character wheel 11 rotational angle data that described angle detection unit 3 spreads out of, and calculates character wheel reading according to these data;
Further, described angle detection unit 3 comprises,
Angular transducer 31(has another name called magnetic coder), for obtaining the angle that described character wheel 1 rotates according to the changes of magnetic field of described annular magnetic steel 13, in the present embodiment, adopt chip MMA253F.
Collection plate 32, for installing described angular transducer 31 and spreading out of the output signal of described angular transducer 31 to described data processing unit.Therefore described collection plate is connected with described data processing unit, and in the present embodiment, described data processing unit is for being integrated on a circuit board, and described circuit board and described character wheel group 1 shaft parallel are also fixedly installed on outside described character wheel group 1.Described collection plate 32 and described data processing unit are that the mode of welding is connected; In other embodiment, described collection plate 32 is also plugged in together by standard interface and described data processing unit 4.
Further, described angle detection unit 3 is also provided with magnetic shielding cover 33 away from the side of the described character wheel 11 corresponding to it; The work of described magnetic shielding cover 33 for preventing the magnetic force away from described character wheel 11 side of described angle detection unit 3 correspondence from disturbing described angle detection unit 3.
Preferably, described annular magnetic steel 113 is bipolarity radial magnetizing ring alnico.
Preferably, described annular magnetic steel 113 diameter is 9.02mm to 9.06mm
Further, the circumference side of character wheel body 111 is divided into 0 ~ 90 digit position.
embodiment 2:as different from Example 1, in the present embodiment, character wheel body 111 side of all character wheels 11 in described character wheel group 1 is all coaxially fixedly installed an annular magnetic steel 113;
Meanwhile, described angle detection unit 3 and one_to_one corresponding identical with described character wheel 11 quantity, one_to_one corresponding refers to, an angle detection unit 3 only detects the anglec of rotation of the described character wheel 11 corresponding with it.
In other embodiment, as measuring accuracy demand allows, also described annular magnetic steel 113 can be set for character wheel body 111 side of a character wheel 11 only in character wheel group 1, simultaneously correspondingly the anglec of rotation of an angle detection unit 3 to this character wheel 11 is set measures.
This device can be installed as follows: S01 described annular magnetic steel 113 is inlayed as described in character wheel body 111 side; Described character wheel axis body 112 is installed through described character wheel 11 by S02; Described character wheel 11 is placed in supporting frame group 21 corresponding on described base plate 2 by S03, and described character wheel axis body 112 snaps in groove; Angular transducer 31 described in S04 is welded on described collection plate 32; S05 prepares pre-installed position according to angular transducer 31 and character wheel 11 and installs magnetic shielding cover 33 in described collection plate 32 side, and magnetic shielding cover 33 should be arranged on described angular transducer 31 away from described character wheel 11 side; Collection plate 32 vertical welding described in S06 is on described circuit board (described circuit board is integrated with described data processing unit 4); S07 installs described circuit board according to predeterminated position, makes described collection plate 32 be positioned at the bracing frame one of the supporting frame group 21 corresponding to it or the outside of bracing frame two.Above step is only this device and installs embodiment, and do not represent any order and limit, some steps, as step S01 and step S04 can carry out simultaneously; Corresponding step S01 and step S02 also convertible order performs.
Identical with the character wheel counter in most prior art, the part in character wheel counter described in the present embodiment except described annular magnetic steel makes by not possessing ferromagnetic material, e.g., can be but be not limited to plastics.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a magnetic strength off-axis character wheel direct-reading counter, is characterized in that, comprise,
Character wheel group, comprise more than two character wheels be coaxially set up in parallel, described character wheel comprises character wheel body, the circumferential edges of a side of described character wheel body is evenly equipped with a circle stepping and dashes forward tooth, and opposite side circumferential edges is provided with carry and dashes forward tooth; Connected by carry gear between adjacent character wheel in described character wheel group; Described character wheel body circle centre position is provided with the character wheel axis body vertical with institute character wheel body, and described print wheel shaft body length is greater than the thickness of described character wheel body and stretches out to described character wheel body both sides;
In described plural character wheel, the character wheel body side of at least one character wheel is inlaid with the annular magnetic steel coaxial with described character wheel body;
Base plate, described base plate is set side by side with and described character wheel supporting frame group one to one, each supporting frame group includes symmetrically arranged bracing frame one and bracing frame two, and support frame as described above one and bracing frame two are provided with the semi-circular recesses agreed with mutually with described character wheel axis body size, shape; Described semi-circular recesses is for placing the described character wheel axis body on corresponding character wheel;
Angle detection unit, described character wheel body side is provided with the character wheel one_to_one corresponding of annular magnetic steel, itself and described character wheel be arranged in parallel, for when described annular magnetic steel rotates with described character wheel, obtain the angle of described character wheel rotation according to the changes of magnetic field of described annular magnetic steel;
Data processing unit, for receiving the character wheel rotational angle data that described angle detection unit spreads out of, and calculates character wheel reading according to these data.
2. magnetic strength off-axis character wheel direct-reading counter as claimed in claim 1, it is characterized in that, described angle detection unit comprises,
Angular transducer, for obtaining the angle that described character wheel rotates according to the changes of magnetic field of described annular magnetic steel;
Collection plate, for installing described angular transducer and spreading out of the output signal of described angular transducer to described data processing unit.
3. magnetic strength off-axis character wheel direct-reading counter as claimed in claim 1, it is characterized in that, described angle detection unit is also provided with magnetic shielding cover away from the side of described character wheel; The work of described magnetic shielding cover for preventing the magnetic force away from described character wheel side from disturbing described angle detection unit.
4. magnetic strength off-axis character wheel direct-reading counter as claimed in claim 1, it is characterized in that, described annular magnetic steel is bipolarity radial magnetizing ring alnico.
5. magnetic strength off-axis character wheel direct-reading counter as claimed in claim 1, it is characterized in that, described annular magnetic steel diameter is 9.02mm to 9.06mm.
6. magnetic strength off-axis character wheel direct-reading counter as claimed in claim 1, is characterized in that, the circumference side of character wheel body is divided into 0 ~ 90 digit position.
7. magnetic strength off-axis character wheel direct-reading counter as claimed in claim 1, it is characterized in that, the character wheel body side of all character wheels in described character wheel group is all coaxially fixedly installed an annular magnetic steel;
Meanwhile, described angle detection unit and one_to_one corresponding identical with described character wheel quantity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510365177.6A CN104897228B (en) | 2015-06-29 | 2015-06-29 | A kind of magnetic strength off-axis character wheel direct-reading counter |
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| CN201510365177.6A CN104897228B (en) | 2015-06-29 | 2015-06-29 | A kind of magnetic strength off-axis character wheel direct-reading counter |
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| CN104897228B CN104897228B (en) | 2018-05-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107741257A (en) * | 2017-10-26 | 2018-02-27 | 金卡智能集团股份有限公司 | A kind of intellegent sampling metering device for identifying magnetic interference and recognition methods |
| CN109540178A (en) * | 2018-12-20 | 2019-03-29 | 金卡智能集团股份有限公司 | A kind of counting structure judging character wheel position based on capacitance |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107741257A (en) * | 2017-10-26 | 2018-02-27 | 金卡智能集团股份有限公司 | A kind of intellegent sampling metering device for identifying magnetic interference and recognition methods |
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| CN109540178A (en) * | 2018-12-20 | 2019-03-29 | 金卡智能集团股份有限公司 | A kind of counting structure judging character wheel position based on capacitance |
| CN109540178B (en) * | 2018-12-20 | 2024-03-19 | 金卡智能集团股份有限公司 | Counting structure for judging position of character wheel based on capacitance |
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| CN104897228B (en) | 2018-05-01 |
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Address after: No. 536, Section 1, airport 1st Road, Shuangliu Southwest Airport, Chengdu, Sichuan 610211 Patentee after: Chengdu Qianjia Technology Co.,Ltd. Address before: No. 536, Section 1, airport 1st Road, Shuangliu Southwest Airport, Chengdu, Sichuan 610211 Patentee before: Chengdu Qianjia Technology Co.,Ltd. |