CN102200453A - Photoelectric direct-reading meter - Google Patents
Photoelectric direct-reading meter Download PDFInfo
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- CN102200453A CN102200453A CN 201010132743 CN201010132743A CN102200453A CN 102200453 A CN102200453 A CN 102200453A CN 201010132743 CN201010132743 CN 201010132743 CN 201010132743 A CN201010132743 A CN 201010132743A CN 102200453 A CN102200453 A CN 102200453A
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- infrared
- receiving tube
- infrared receiving
- character wheel
- tube
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Abstract
The invention relates to a photoelectric direct-reading meter which comprises: a single digit print wheel, an infrared transmitting tube, an infrared receiving tube, an object (C) which is located on print wheel side, in an irregular shape and shares a same axis with the print wheel. The infrared transmitting tube emits infrared rays and the infrared receiving tube receives the infrared rays reflected by the C. When the distance between the infrared transmitting tube and the C, and the distance between the infrared receiving tube and the C are large, the infrared rays reflected by the C and received by the infrared receiving tube are weak. As the distance between the infrared transmitting tube and the C, and the distance between the infrared receiving tube and the C are shortened, the infrared rays reflected by the C and received by the infrared receiving tube are become stronger. The stronger the light intensity received by the infrared receiving tube is, the smaller the on-resistance is and the greater the current is. When the print wheel is rotated from digit 0 to digit 9, the the distance between the infrared transmitting tube and the C, and the distance between the infrared receiving tube and the C are become shorter, and conduction current of the infrared receiving tube is become greater and greater so that detected voltage of SIGNAL is become higher and higher. An amplitude range is determined according to a size of level amplitude. And then, position of the infrared receiving tube can be determined so that an accurate digit of the print wheel can be obtained.
Description
(1) technical field
The present invention relates to electrical instrumentation class field, relate to a kind of photo-electronic directly reading table specifically.
(2) background technology
The photo-electronic directly reading table comes out by coding and the character wheel number " direct-reading " of decoding with table, is the physical location translation of numerical digit on the character wheel.Code translator meter reading moment is finished decoding, sends data, and most of photo-electronic directly reading tables all adopt the M-BUS communication modes, signal and power supply two lines, not polarities.With transmission-type photo-electronic directly reading table is example: adopt the photoelectric encoder principle, with each character wheel as a code-disc, the infrared light that light tank on five infrared receiving tubes induction character wheel is penetrated and cause that the variation of level forms one group of five-digit number sign indicating number, decoding back teletransmission show to the airborne interface of checking meter of system-computed and show the identical numeral of window indicating value.The photo-electronic directly reading table not chargedly is operated in pure machine performance in the time of work, power to the direct-reading gage terminal by host computer in the moment that system checks meter, and character wheel information changed into by the electric signal of system protocol coding read by signal wire, the electric current during communication is provided by the M-BUS bus.But the common photoelectric direct-reading gage is worked as the moment that character wheel is in carry, and when just half word appearred in the reading window, misjudgement, erroneous judgement will appear in system, cause reading unreliable.And the photo-electronic directly reading table is when circuit design, and element is more, and cost is bigger, the circuit design more complicated.
A kind of low cost, circuit design are simple in order to provide, the photo-electronic directly reading table of reliable reading, a kind of photo-electronic directly reading table of my company's patent of invention, and circuit is simple, be easy to realize, and used components and parts is few during circuit design, accomplish real reducing cost.
(3) summary of the invention
The objective of the invention is to solve existing photo-electronic directly reading table in circuit design, element is many, the cost height, and reading is unreliable, and the present situation of circuit complexity provides the photo-electronic directly reading that a kind of circuit is simple, cost is low, be easy to realize table.
Technical scheme of the present invention is:
A kind of photo-electronic directly reading table comprises position character wheel, infrared transmitting tube, an infrared receiving tube, is positioned at character wheel side and the in irregular shape object coaxial with character wheel.It is characterized in that: the position of infrared transmitting tube and infrared receiving tube is changeless, is positioned at the character wheel side and rotates synchronously with character wheel with the coaxial object in irregular shape of character wheel.
A kind of photo-electronic directly reading table principle is: infrared transmitting tube emission infrared ray, infrared receiving tube receives by being positioned at the infrared ray that character wheel side and the in irregular shape object (can be described as C object) coaxial with character wheel reflect, when the distance of infrared emission, receiving tube distance C object is far away, infrared receiving tube receive infrared ray that the C object launches back a little less than, along with the distance shortening of infrared emission, receiving tube and C object, infrared receiving tube receives the infrared ray crescendo of C object reflected back.The light intensity that infrared receiving tube receives is strong more, and its conducting resistance is just more little, and is just big more by its electric current.When rotated the position of the position to 9 of character wheel from 0, infrared emission, receiving tube were more and more nearer apart from the distance of C object, and the conducting electric current of infrared receiving tube will be increasing, and the voltage that detects the SIGNAL place like this can be more and more higher.Judge residing amplitude range according to the size of level amplitude, judge the residing position of infrared receiving tube then, thereby obtain character wheel reading accurately.The level amplitude range is divided into 10 segmentations, and the position of a numeral is represented in each segmentation.The segmentation of this numerical value needs a large amount of tests to determine the span of each position correspondence.
The invention has the beneficial effects as follows:
A kind of photo-electronic directly reading watch circuit of the present invention simplicity of design, components and parts are few, and cost is low, is easy to realize.
(4) description of drawings
Accompanying drawing 1 is a kind of photo-electronic directly reading hoist pennants of the present invention
Accompanying drawing 2 is a kind of photo-electronic directly reading table of the present invention infrared emission, infrared receiving unit circuit
(5) embodiment
Below in conjunction with embodiment technical scheme of the present invention is described in further detail.Protection scope of the present invention will not only be confined to the statement of following content.
As shown in Figure 1: a kind of photo-electronic directly reading table comprises position character wheel, infrared transmitting tube A, an infrared receiving tube B, is positioned at character wheel side and the in irregular shape object C coaxial with character wheel, and wherein the position of A, B is fixed, and the rotation of C and character wheel is synchronous.
As shown in Figure 2: A is an infrared transmitting tube, the emission infrared ray.B is an infrared receiving tube, receives the infrared ray of C reflected back, as the infrared ray that receives a little less than, its conducting resistance R is big more, and is just more little by its electric current; Otherwise if the infrared ray that receives is stronger, conducting resistance R is just more little, and is just big more by its electric current.
Infrared transmitting tube emission infrared ray, infrared receiving tube receives the infrared ray by the C reflection, when the distance of infrared emission, receiving tube distance C is far away, infrared receiving tube receive infrared ray that C launches back a little less than, along with the distance shortening of infrared emission, receiving tube and C, infrared receiving tube receives the infrared ray crescendo of C reflected back.The light intensity that infrared receiving tube receives is strong more, and its conducting resistance is just more little, and is just big more by its electric current.When character wheel was rotated by the position of 0 position to 9, infrared emission, receiving tube were more and more nearer apart from the distance of C, and the conducting electric current of infrared receiving tube will be increasing, and the voltage that detects the SIGNAL place like this can be more and more higher.Judge residing amplitude range according to the size of level amplitude, judge the residing position of infrared receiving tube then, thereby obtain character wheel reading accurately.The level amplitude range is divided into 10 segmentations, and the position of a numeral is represented in each segmentation.The segmentation of this numerical value needs a large amount of tests to determine the span of each position correspondence.
Claims (2)
1. photo-electronic directly reading table, comprise position character wheel, infrared transmitting tube, an infrared receiving tube, be positioned at character wheel side and the in irregular shape object coaxial with character wheel, it is characterized in that: the position of infrared transmitting tube and infrared receiving tube is changeless, is positioned at the character wheel side and rotates synchronously with character wheel with the coaxial object in irregular shape of character wheel.
2. a kind of photo-electronic directly reading table according to claim 1, it is characterized in that: infrared transmitting tube emission infrared ray, infrared receiving tube receive by be positioned at the character wheel side and with the infrared ray of the coaxial object reflection in irregular shape of character wheel, infrared receiving tube is different apart from the distance of irregularly shaped object, the light intensity difference that infrared receiving tube receives, cause its conducting resistance, electric current by it is just different, electric current is changed into level, judge residing amplitude range according to the size of level amplitude, judge the residing position of infrared receiving tube then, thereby obtain character wheel reading accurately; The level amplitude range is divided into 10 segmentations, and the position of a numeral is represented in each segmentation; The segmentation of this numerical value needs a large amount of tests to determine the span of each position correspondence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010132743 CN102200453A (en) | 2010-03-26 | 2010-03-26 | Photoelectric direct-reading meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010132743 CN102200453A (en) | 2010-03-26 | 2010-03-26 | Photoelectric direct-reading meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102200453A true CN102200453A (en) | 2011-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010132743 Pending CN102200453A (en) | 2010-03-26 | 2010-03-26 | Photoelectric direct-reading meter |
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| Country | Link |
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| CN (1) | CN102200453A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109690257A (en) * | 2016-07-22 | 2019-04-26 | 迪尔阿扣基金两合公司 | Rotate manipulation device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1908966A (en) * | 2005-08-01 | 2007-02-07 | 黄华 | Electronic read device for rotary wheel type counting device |
| CN1928899A (en) * | 2006-01-06 | 2007-03-14 | 宁波水表股份有限公司 | Mechanical counter for electromagnetic induction coding |
| CN2932317Y (en) * | 2006-04-14 | 2007-08-08 | 南京理工大学 | Roller type digital dial for human-machine universal identification |
| CN200968861Y (en) * | 2005-02-21 | 2007-10-31 | 李建平 | Non-contact direct-reading meter |
| KR100848037B1 (en) * | 2005-12-23 | 2008-07-23 | 김연미 | Simple method of digitizing the usage guide value of the meter and its device |
-
2010
- 2010-03-26 CN CN 201010132743 patent/CN102200453A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200968861Y (en) * | 2005-02-21 | 2007-10-31 | 李建平 | Non-contact direct-reading meter |
| CN1908966A (en) * | 2005-08-01 | 2007-02-07 | 黄华 | Electronic read device for rotary wheel type counting device |
| KR100848037B1 (en) * | 2005-12-23 | 2008-07-23 | 김연미 | Simple method of digitizing the usage guide value of the meter and its device |
| CN1928899A (en) * | 2006-01-06 | 2007-03-14 | 宁波水表股份有限公司 | Mechanical counter for electromagnetic induction coding |
| CN2932317Y (en) * | 2006-04-14 | 2007-08-08 | 南京理工大学 | Roller type digital dial for human-machine universal identification |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109690257A (en) * | 2016-07-22 | 2019-04-26 | 迪尔阿扣基金两合公司 | Rotate manipulation device |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110928 |