CN201589621U - Magnetic encoding array sensing direct-reading gauge head - Google Patents
Magnetic encoding array sensing direct-reading gauge head Download PDFInfo
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- CN201589621U CN201589621U CN2009201094848U CN200920109484U CN201589621U CN 201589621 U CN201589621 U CN 201589621U CN 2009201094848 U CN2009201094848 U CN 2009201094848U CN 200920109484 U CN200920109484 U CN 200920109484U CN 201589621 U CN201589621 U CN 201589621U
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- character wheel
- magnetic
- array sensing
- gauge head
- encoding array
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Abstract
The utility model relates to a magnetic encoding array sensing direct-reading gauge head consisting of a character wheel, neodymium iron boron magnetic steel, magnetic poles, magnetic resistance inductive switches and PCBs (Printed Circuit Boards). The magnetic encoding array sensing direct-reading gauge head is characterized in that in the sequence of the display numbers from 0 to 9, the neodymium iron boron magnetic steel or a counterweight is inlaid under the position of each display number on the character wheel according to certain encoding principle and then covered by a plastic strip with numbers; the magnetic resistance inductive switches are in four rows totally and are respectively installed on the two PCBs in a welding manner, and the two PCBs are respectively installed on a character wheel rack at an angle of 36 degrees formed by each of the two circuit boards and the bottom surface of a character wheel box; and the magnetic encoding array sensing direct-reading gauge head is provided with another PCB on which a low power consumption singlechip and accessory circuits are installed, and four wires are led out. Compared with the ongoing program, the magnetic encoding array sensing direct-reading gauge head is greatly improved in the aspects of reliability, identification accuracy and feasibility of mass production.
Description
Technical field
The utility model relates to a kind of magnetic encoding array sensing direct reading header, refers in particular to and a kind ofly embeds the magnetic resistance sense inductive switch device array of packing on magnet steel, the character wheel frame by the specific coding mode on mechanical type electricity, water, gas, hot metering instrument character wheel, directly obtains the device that the character wheel group shows number through ad hoc approach again.
Background technology
Automatic water (gas, heat) table is copied and accepted and ladder water (gas, heat) valency is the technology of current tap water, combustion gas, heating power industry urgent need, mainly contains four major types: a, smart card water (gas, heat) table; (the family table produces metrical pulse through wired meter-copy device that is coupled to for b, separated time system centralized automatic meter-reading, meter-copy device again networking to water (gas, heat) Surveillance center) c, bus system intelligent meter data recording mode (directly install acquisition module on the water meter, can network and check meter or check meter separately, networking is convenient) d, wireless transmit formula water (gas, heat) table.When realizing one of a, b, three kinds of functions of d, just need the demonstration number of mechanical character wheel group is obtained or be converted into electronic data, obtain at present or method for transformation has two big class, pulsed and direct-reading.
Pulsed be will rotation metering blowout patche number collect and electronics adds up and obtains showing number, main magnetic induction and two kinds of methods of photoinduction of adopting, owing to being divided into again, the senser element difference goes alone the reed pipe sensing in the magnetic induction, the double dry-reed pipe sensing, the hall device sensing, 4 kinds of double dry-reed pipe freeze mode sensings, preceding 3 kinds big because of power consumption, critical point vibration mistaking signal, poor reliability etc. are not used substantially, at present best and the most frequently used is the 4th kind, but this kind mode have service time long back partly the tongue tube off resistance reduce to suddenly about 500 Europe and cause power consumption to strengthen suddenly, tackle similar " water hammer " such capable and experienced and hold together still mistaking signal, must write down problems such as inversion pulse, current water meter, the gas meter product is generally of low quality, the inaccurate reason of metering just derives from this.The photoelectric sensing mode then because of its volume is big, poor reliability, almost be can't hear the sound that is also using at present.
Pulsed needs constantly to power to inductive receiving circuit, thereby the power consumption of its accumulative total is very big, in battery powered water, gas, warm table, its power consumption has accounted for the major part of the energy content of battery, and at present homemade water, gas, warm table serviceable life, reason short, that cost is high (with high capacity or many Battery packs) caused by it.
Direct-reading is to keep former machinery metering character wheel group, adopts the demonstration number that directly obtains when needed someway on the character wheel group.Its method roughly is divided into four classes: photo-electric, contact, camera shooting type, bar code direct-reading.
Direct-reading has two common advantages: 1, the data of reading from the table tool are exactly data presented on the dial plate, are not pulses.2, do not cost electricity at ordinary times, only power on, therefore, be not afraid of power failure in the moment of reading of data.Theoretically, its sense data and dial plate data are always synchronous.
For the earliest, its frame mode is direct-reading with shooting direct-reading: a camera is installed before the mechanical character wheel display window, the digital picture that photographed is spread out of post analysis can obtain showing number; Whether photo-electric is on each water meter character wheel side face five reflectings surface to be set, and on the corresponding position five photoelectrical couplers is being set with it, reflect by coupling mechanism the position of counting character wheel is judged; Wish to read several just sensor installations on several character wheels.For example: read 5 figure places and 5 * 5=25 just is installed to sensing device; The direct reading frame mode in contact is: load onto a synchronizing potential device below the dial plate of pointer water meter on each needle pivot, the resistance of measuring by the contact potential device is judged the position of pointer indication; Bar code direct-reading and photo-electric roughly the same, but reading object is a bar code.Also has a kind of counting direct-reading that is, its scheme is that the chip with acquisition pulse is contained on the metering character wheel, keeps its work by battery, and the data of record and accumulation are saved in chip, the data of reading from chip are exactly the dial plate synchrodata, are actually the modularization of pulsed.
Contact is owing to be the way of contact, and wearing and tearing and wearing out all can make its inefficacy, from not being used; Shooting direct-reading does not change the machinery standard of original water, gas, warm table, structure is also simpler, but Flame Image Process is too complicated, it also is difficult point that fuzzy digit in the image is translated into number, in addition, because image data amount is big, gather, transmit very difficulty, camera is under the such condition of work of water meter, and long-term reliability is difficult to ensure; Photo-electric and bar code direct-reading are under the value condition of existing domestic water meter, making the degree itself that can accept in cost that high precision product like this paid and market is exactly a kind of contradiction, and state they all changed the original structure of water, gas, hotlist, can set up ripe structure and standard in a short time, become reliable product and make us querying.At last, the cost of this dual mode is also too expensive, and moment power consumption too greatly and generally battery can't be confessed.
The utility model content
The purpose of this utility model is to provide a kind of magnetic encoding array sensing direct reading header, especially a kind of low cost, mechanical character wheel group highly reliable, that do not change water (gas, heat) off-balancesheet type structure substantially show that number obtains or be converted into the device of electronic data, to solve deficiency of the prior art.
A kind of magnetic encoding array sensing direct reading header of the utility model, form by character wheel, Nd-Fe-B magnet steel, magnetic pole, magnetic resistance sense inductive switch (MR Sensor), PCB wiring board, it is characterized in that: each character wheel show below, number (totally 10) position according to show number for " 0 "-＞" 9 " and order by certain cryptoprinciple embed neodymium iron stretch tight magnet steel and counterweight (establish embed magnet steel for " 1 ", embedding counterweight is " 0 "), cover tape numeral (0～9) moulds bar afterwards; Described magnetic resistance sense inductive switch, totally four rows are welded respectively on two PCB wiring boards, and become 36 ° of angles to be installed on (as shown in Figure 3) on the character wheel frame with character wheel box bottom surface respectively this two PCB wiring board; In addition also be provided with a PCB wiring board in this gauge outfit, low-power scm and accessory circuit are installed on it, and draw four lines (power supply,, two signal wires) outward.
Wherein, described each row's magnetic resistance sense inductive switch, the quantity of setting equals the figure place of character wheel.
Wherein, described cryptoprinciple is: a, embed the number N of the number M≤magnetic resistance sense inductive switch of Nd-Fe-B magnet steel continuously; Number N 〉=4 of b, magnetic resistance sense inductive switch; C, the corresponding position embedded code that shows begin, and take out N position binary code in regular turn, and each shows position one group code, and totally 10 groups, this 10 group code must not be identical.
Principle of work of the present utility model is: Nd-Fe-B magnet steel and weight material are embedded in the wheel body, when resting on a certain position after the wheel body rotation, 4 magnetic resistance sense inductive switch must be distinguished a corresponding magnet steel or a weight material, if magnetic resistance sense inductive switch correspondence is magnet steel, then magnetic resistance sense inductive switch conducting (representing) with 1, if corresponding is weight material, then magnetic resistance sense inductive switch disconnects (representing with 0), wheel body rotates a circle, have combination break-makes different in 10, as shown in table 1 below:
| The character wheel position | The combined situation of magnetic resistance sense |
16 systems are represented |
| 0 | 0001 | 1 |
| 1 | 0010 | 2 |
| 2 | 0101 | 5 |
| 3 | 1010 | |
| 4 | 0100 | 4 |
| 5 | 1001 | 9 |
| 6 | 0011 | 3 |
| 7 | 0110 | 6 |
| 8 | 1100 | |
| 9 | 1000 | 8 |
Table 1
These 10 kinds different break-make combinations can pass to single-chip microcomputer by peripheral circuit, and single-chip microcomputer just can be judged the position of current character wheel, thereby derives the demonstration number of character wheel.
A kind of magnetic encoding array sensing direct reading header of the utility model, its advantage and effect are: the utility model has realized that direct-reading gauge head sensing element quantity is few, simple and reliable; The senser element power consumption drops to several per milles of other direct-reading scheme; The sensing element volume dwindles significantly and connects array, does not change the original structure of water, gas, warm table substantially; The direct-reading gauge head cost that uses the utility model to design also drops to the part of existing various schemes; The product that uses the utility model to design is all having significantly raising than current programme aspect reliability, identification accuracy, the easy row of the production in enormous quantities property.
Description of drawings
Fig. 1 (a) (b) (c) is depicted as the structural representation of the utility model magnetic encoding array sensing direct reading header
Fig. 2 (a) (b) is depicted as the character wheel synoptic diagram
Figure 3 shows that magnetic resistance sense inductive switch scheme of installation
Figure 4 shows that magnetic resistance sense inductive switch array direct-reading principle of work block diagram
Figure 5 shows that the utility model embodiment magnetic resistance sense inductive switch array line connection layout
Concrete label is as follows among the figure:
1, character wheel 2, Nd-Fe-B magnet steel 3, magnetic pole 4, magnetic resistance sense inductive switch 5, PCB wiring board
Embodiment
Below in conjunction with drawings and Examples, the technical solution of the utility model is described further.
See also shown in Figure 1, a kind of magnetic encoding array sensing direct reading header of the utility model, form by character wheel 1, Nd-Fe-B magnet steel 2, magnetic pole 3, magnetic resistance sense inductive switch 4 (MR Sensor), PCB wiring board 5, in below, demonstration number (the totally 10) position of each character wheel 1 according to show number for " 0 "-＞" 9 " and order by certain cryptoprinciple embed neodymium iron stretch tight magnet steel 2 and counterweight (establish embed magnet steel for " 1 ", embedding counterweight is " 0 "), cover tape numeral (0～9) moulds bar (as shown in Figure 2) afterwards; Described magnetic resistance sense inductive switch, totally four rows are welded respectively on two PCB wiring boards, and become 36 ° of angles to be installed on (as shown in Figure 3) on the character wheel frame with character wheel box bottom surface respectively this two wiring board; In addition also be provided with a PCB wiring board in this gauge outfit, low-power scm and accessory circuit are installed on it, and draw four lines (power supply,, two signal wires) outward.
Described cryptoprinciple is: a, embed the number N of the number M≤magnetic resistance sense inductive switch of Nd-Fe-B magnet steel 2 continuously; Number N 〉=4 of b, magnetic resistance sense inductive switch; C, the corresponding position embedded code that shows begin, and take out N position binary code in regular turn, and each shows position one group code, and totally 10 groups, this 10 group code must not be identical.
As in the following table 2 being 11 kinds of the most frequently used codings:
Table 2
Be that each character wheel 1 is got sequence number 4 schemes magnet steel/counterweight coding, the magnetic resistance sense inductive switch device 4 of each character wheel 1 correspondence can be connected by mode shown in Figure 5 under 6 the situation at character wheel 1.
According to said structure, be embedded in Nd-Fe-B magnet steel at character wheel 1, the magnetic of packing on character wheel frame resistance sense inductive switch 4 is also formed array, then can in the dispatch from foreign news agency service time, carry out character wheel and show the number direct-reading with super low power consuming single chip processor, its process is: dispatch from foreign news agency arrives, single-chip microcomputer resets, control OC door makes C11～C14 grounded emitter earlier, and C11～C14 enters duty, after the appropriateness time-delay, single-chip microcomputer reads in scanning input number, this number is this demonstration position correspondence code constantly of the 1st character wheel, looks into table sequence number 4, can obtain this displayed value constantly of the 1st character wheel, turn-off the OC door that C11～C14 emitter links to each other at last, open the OC door that C21～C24 emitter links to each other, repeat aforesaid operations, can obtain this displayed value constantly of the 2nd character wheel, ..., obtain 6 at last and show number.
In above-mentioned scheme if the identification bit error rate can increase magnetic resistance sense inductive switch and magnet steel number, but principle is identical when high in Project Realization.
Of particular note, this magnetic encoding array sensing direct reading header of the present utility model, can be applicable to ammeter, water meter and gas meter etc. need carry out in the measurement instrument of data direct-reading, this scenario-frame is simple, and when not carrying out data acquisition, peripheral circuit can be in the state of not powering, only when carrying out the data copy reading, just power, can reduce the consumption of electric energy greatly.
Claims (2)
1. magnetic encoding array sensing direct reading header, form by character wheel, Nd-Fe-B magnet steel, magnetic pole, magnetic resistance sense inductive switch, PCB wiring board, it is characterized in that: each character wheel show numerical digit deposit Fang Yi show number for " 0 " to " 9 " order by certain cryptoprinciple embedding neodymium iron stretch tight magnet steel and counterweight, the cover tape numeral moulds bar afterwards; Described magnetic resistance sense inductive switch, totally four rows are welded respectively on two PCB wiring boards, and become 36 ° of angles to be installed on the character wheel frame with character wheel box bottom surface respectively this two wiring board; This gauge outfit inland sea is provided with a PCB wiring board in addition, low-power scm and accessory circuit is installed on it, and draws four lines outward.
2. magnetic encoding array sensing direct reading header according to claim 1 is characterized in that: described each row's magnetic resistance sense inductive switch, the quantity of setting equals the figure place of character wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201094848U CN201589621U (en) | 2009-06-24 | 2009-06-24 | Magnetic encoding array sensing direct-reading gauge head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201094848U CN201589621U (en) | 2009-06-24 | 2009-06-24 | Magnetic encoding array sensing direct-reading gauge head |
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| Publication Number | Publication Date |
|---|---|
| CN201589621U true CN201589621U (en) | 2010-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009201094848U Expired - Lifetime CN201589621U (en) | 2009-06-24 | 2009-06-24 | Magnetic encoding array sensing direct-reading gauge head |
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| CN (1) | CN201589621U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607661A (en) * | 2012-03-30 | 2012-07-25 | 陈健 | Electronic direct-reading counter for wet type water meter |
| CN103852123A (en) * | 2012-11-29 | 2014-06-11 | 哈尔滨市三和佳美科技发展有限公司 | Special code disc for photoelectric water meter |
| CN106404096A (en) * | 2016-11-23 | 2017-02-15 | 无锡赫奥科技有限公司 | Direct reading character wheel based on MR and reading method thereof |
-
2009
- 2009-06-24 CN CN2009201094848U patent/CN201589621U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607661A (en) * | 2012-03-30 | 2012-07-25 | 陈健 | Electronic direct-reading counter for wet type water meter |
| CN102607661B (en) * | 2012-03-30 | 2013-10-30 | 陈健 | Electronic direct-reading counter for wet type water meter |
| CN103852123A (en) * | 2012-11-29 | 2014-06-11 | 哈尔滨市三和佳美科技发展有限公司 | Special code disc for photoelectric water meter |
| CN106404096A (en) * | 2016-11-23 | 2017-02-15 | 无锡赫奥科技有限公司 | Direct reading character wheel based on MR and reading method thereof |
| CN106404096B (en) * | 2016-11-23 | 2023-07-18 | 无锡圣普电力科技有限公司 | MR-based direct-reading character wheel and reading method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100922 |