CN208536875U - A kind of print wheel reading device based on light detection - Google Patents
A kind of print wheel reading device based on light detection Download PDFInfo
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- CN208536875U CN208536875U CN201821083589.6U CN201821083589U CN208536875U CN 208536875 U CN208536875 U CN 208536875U CN 201821083589 U CN201821083589 U CN 201821083589U CN 208536875 U CN208536875 U CN 208536875U
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Abstract
The utility model discloses a kind of print wheel reading devices based on light detection, it includes mechanical character wheel, detection device, and the conversion circuit with detection device communication connection, wherein mechanical character wheel is designed using light transmission, with different transmission regions, and different transmission regions has different light transmittances, different light transmittances reads from different character wheels and corresponds, detection device is sent to conversion circuit for detecting current transmission region light transmittance corresponding with character wheel reading and generating corresponding identification signal, conversion circuit determines current corresponding character wheel reading according to identification signal and character wheel reading is converted to corresponding electronical reading, teletransmission is carried out convenient for instrumented data.The utility model not only simplifies character wheel reading and is converted to the realization process of electronical reading, and improves the reliability of long-term work, reduces power consumption and cost.
Description
Technical field
The utility model relates to measuring instrument fields, are in more detail related to a kind of character wheel reading dress based on light detection
It sets.
Background technique
In recent years, China has carried out a large amount of work for the intelligentized updating of the energy measurements instrument such as water, electricity, gas, heat.
Especially intellectual water meter, as national water resources management becomes sternly, in the water supply process of wisdom water utilities, to water measurement and in real time
Copy reading has new requirement.
The measuring principle of mainstream is still in the way of machinery rotation at present, and the cumulative volume of the energy passes through mechanical character wheel
Mode shown.The intelligentized purpose of energy measurement instrument is that the mechanical print wheel data of counter is converted into electron number
According to going to realize trade settlement and data statistics, thus study how mechanical character wheel registration is converted into electronical reading, has great
Realistic meaning.
There is also many general technologies that mechanical data is converted to electronic data in the prior art, mainly include photoelectricity
Direct-reading, code-disc direct read, camera shooting direct-reading etc..But all there is some defects for above-mentioned several general technologies.Image the skill of direct-reading
Art scheme is excessively complicated and is easy by external interference；The scheme long-time service of code-disc direct read will appear abrasion, cause to read out
It is now abnormal；The scheme of photo-electronic directly reading uses more optoelectronic transceiver pipe, higher cost, and reliability is lower.
Utility model content
The purpose of this utility model is to provide a kind of print wheel reading devices based on light detection, and structure is simple, does not need
Costly or complicated structure.Therefore, the utility model successfully provides a kind of cost-effective solution, not only simplifies
Character wheel reads the realization process for being converted to electronical reading, and improves the reliability of long-term work, reduces power consumption and cost.
To achieve the goals above, the utility model provides a kind of print wheel reading device based on light detection comprising:
Mechanical character wheel, the mechanical character wheel have a different transmission regions, and different transmission regions have it is different saturating
Luminosity, different light transmittances read from different character wheels and correspond；
Detection device；And
With the conversion circuit of detection device communication connection, the detection device detects current transmission region and character wheel is read
It counts corresponding light transmittance and generates corresponding identification signal and be sent to the conversion circuit, the conversion circuit is according to the identification
Signal determines current corresponding character wheel reading and character wheel reading is converted to corresponding electronical reading.
Preferred embodiment according to the present utility model, the different light transmittances of the mechanical character wheel by same translucent material not
Stack pile is formed.
Preferred embodiment according to the present utility model, the different light transmittances of the mechanical character wheel are by different translucent material institutes
It is formed.
Preferred embodiment according to the present utility model, the different light transmittances of the mechanical character wheel by different pore size loophole
It is formed.
Preferred embodiment according to the present utility model, the mechanical character wheel are formed by the way that the density degree of loophole is arranged
Different light transmittances.
Preferred embodiment according to the present utility model, the detection device include optical transmitting set and optical receiver, the light
Transmitter and the optical receiver are separately positioned on the two sides of the mechanical character wheel, and the light that the optical transmitting set issues passes through institute
The transmission region of mechanical character wheel is stated, the optical receiver receives the light that the optical transmitting set issues and generates the identification letter
Number, the identification signal and the light transmittance of the transmission region currently passed through by light correspond.
Preferably, the optical transmitting set can be, but not limited to be the luminescent devices such as light emitting diode, laser tube.
Preferably, the optical receiver can be, but not limited to be photo resistance, photodiode, phototriode, silicon light
The light-sensitive devices such as battery.
Preferred embodiment according to the present utility model, the conversion circuit includes processing module, logical with processing module respectively
The first analog switch, the second analog switch, constant-current source, analog-to-digital conversion module and the communication module for believing connection, wherein the perseverance
For exporting specific electric current to first analog switch, first analog switch is connect with the optical transmitting set in stream source,
For the signal control to the optical transmitting set, so that the electric current of constant-current source output can be conducted to the optical transmitting set,
Second analog switch is connect with the optical receiver and the analog-to-digital conversion module respectively, and second analog switch receives
The identification signal from the optical receiver is simultaneously sent to the analog-to-digital conversion module, and the analog-to-digital conversion module is to described
Identification signal carries out analog-to-digital conversion and transformation result is sent to the processing module, and the processing module is to the transformation result
It is handled, the transformation result is compared with preset threshold, presently described identification signal is determined according to different threshold values
Corresponding character wheel reading, and character wheel reading is converted into corresponding electronical reading, the processing module passes through the communication
Electronical reading is sent to external treatment end by module.
Preferably, the conversion circuit further comprises signal amplification module, the signal amplification module respectively with it is described
Second analog switch is connected with the analog-to-digital conversion module, and the signal amplification module is to the institute from second analog switch
It states and is re-fed into the analog-to-digital conversion module after identification signal amplifies, the setting of the signal amplification module ensure that faint
Identification signal can be also resolved.
The above-mentioned and other purpose of the utility model, feature, advantage will in the following detailed description, attached drawing and
The attached claims further clarify.
Detailed description of the invention
Fig. 1 is the configuration schematic diagram of preferred embodiment according to the present utility model；
Fig. 2 is the structural schematic diagram of preferred embodiment according to the present utility model；
Fig. 3 is another structural schematic diagram of preferred embodiment according to the present utility model；
Fig. 4 is the structural representation of the first embodiment of the mechanical character wheel of preferred embodiment according to the present utility model
Figure；
Fig. 5 is the structural representation of second of embodiment of the mechanical character wheel of preferred embodiment according to the present utility model
Figure；
Fig. 6 is the structural representation of the third embodiment of the mechanical character wheel of preferred embodiment according to the present utility model
Figure；
Fig. 7 is the structural representation of the 4th kind of embodiment of the mechanical character wheel of preferred embodiment according to the present utility model
Figure；
In figure: mechanical character wheel 10；Print wheel shaft 11；Detection device 20；Optical transmitting set 21；Optical receiver 22；Conversion circuit 30；
Processing module 31；First analog switch 32；Second analog switch 33；Constant-current source 34；Analog-to-digital conversion module 35；Communication module 36；
Signal amplification module 37.
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to utility model, it should be noted that
Under the premise of not colliding, new reality can be formed between various embodiments described below or between each technical characteristic in any combination
Apply example.
It is described below for disclosing the utility model so that those skilled in the art can be realized the utility model.It retouches below
Preferred embodiment in stating is only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.It is retouched following
The basic principle of the utility model defined in stating can be applied to other embodiments, deformation scheme, improvement project, etc. Tongfangs
The other technologies scheme of case and the spirit and scope without departing from the utility model.
It will be understood by those skilled in the art that in the exposure of the utility model, term " longitudinal direction ", " transverse direction ", "upper",
The orientation or position of the instructions such as "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside"
Relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, and
It is not that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore
Above-mentioned term should not be understood as limiting the present invention.
It is understood that term " one " is interpreted as " at least one " or " one or more ", i.e., in one embodiment,
The quantity of one element can be one, and in a further embodiment, the quantity of the element can be it is multiple, term " one " is no
It can be interpreted as the limitation to quantity.
Referring to Fig. 1 to Fig. 7 of attached drawing, the character wheel based on light detection of preferred embodiment according to the present utility model reads dress
Set to be elucidated in following description, and the print wheel reading device structure based on light detection is simple, not only simplify word
Wheel reading is converted to the realization process of electronical reading, and improves the reliability of long-term work, reduces power consumption and cost.
As shown in Fig. 1, the print wheel reading device based on light detection include mechanical character wheel 10, detection device 20, with
And the conversion circuit 30 with the detection device 20 communication connection has not wherein the mechanical character wheel 10 is designed using light transmission
Same transmission region, and different transmission regions has different light transmittances, different light transmittances reads one from different character wheels
One is corresponding.The detection device 20 detects current transmission region and character wheel and reads corresponding light transmittance and the corresponding identification letter of generations
It number is sent to the conversion circuit 30, the conversion circuit 30 determines current corresponding character wheel reading simultaneously according to the identification signal
Character wheel reading is converted into corresponding electronical reading, carries out teletransmission convenient for instrumented data.
It will be readily appreciated by those skilled in the art that the quantity of the mechanical character wheel 10 is based on described in the utility model
It is unrestricted in the print wheel reading device of light detection.
As shown in Fig. 2, the side periphery of the mechanical character wheel 10 is disposed with number 0~9, in the mechanical character wheel
10 rounded bottom surface designs to form different transmission regions using light transmission, and different light transmittances is arranged in different transmission regions, and
Character wheel reading pointed by different light transmittances and the transmission region corresponds.The light that different transmission regions can penetrate
Intensity it is different.
As shown in Fig. 4, which show form difference according to the mechanical character wheel 10 of the preferred embodiment in the utility model
The first embodiment of light transmittance.The different light transmittances of the mechanical character wheel 10 by same translucent material different-thickness or
The different numbers of plies are formed, and can be selected according to different processing technologys.Illustratively, the light transmittance of the mechanical character wheel 10
The region from 0 to 9 corresponding to number 0~9 is sequentially increased, and is divided into 10 grades.10 light transmission grades and number 0~9 are one by one
Corresponding, the light intensity that the higher region of light transmittance can penetrate is bigger.
Preferably, the region (region pointed by B1 in figure) corresponding to number 0 is set as opaque；In digital 9 institutes
Corresponding region (region pointed by A1 in figure) uses full hollow design, and whole light is allowed to pass through.Setting in this way
Meter, saves the cost of translucent material.
As shown in Fig. 5, which show form difference according to the mechanical character wheel 10 of the preferred embodiment in the utility model
Second of embodiment of light transmittance.The different light transmittances of the mechanical character wheel 10 by different degree of light transmissions translucent material institute shape
At.Illustratively, the region corresponding to number 0~9 sets gradually different translucent materials, the translucent material set gradually
Degree of light transmission region from 0 to 9 corresponding to number 0~9 is sequentially increased, and is divided into 10 grades.10 light transmission grades and number 0
~9 correspond, and the light intensity that the higher region of light transmittance can penetrate is bigger.
Preferably, the region (region pointed by B2 in figure) corresponding to number 0 is set as opaque；In digital 9 institutes
Corresponding region (region pointed by A2 in figure) uses full hollow design, and whole light is allowed to pass through.Setting in this way
Meter, saves the cost of translucent material.
As shown in Fig. 6, which show form difference according to the mechanical character wheel 10 of the preferred embodiment in the utility model
The third embodiment of light transmittance.The mechanical character wheel 10 is different to be formed by the different density degree that loophole is arranged
Light transmittance.Illustratively, the region corresponding to number 0~9 sets gradually the different loophole of density degree, the number of loophole
Amount region from 0 to 9 corresponding to number 0~9 is sequentially increased, and is divided into 10 grades.10 light transmission grades and number 0~9 one
One is corresponding, and the light intensity that the bigger region of light transmission hole number can penetrate is bigger.
Preferably, the region (region pointed by B3 in figure) corresponding to number 0 is set as opaque；In digital 9 institutes
Corresponding region (region pointed by A3 in figure) uses full hollow design, and whole light is allowed to pass through.Setting in this way
Meter, saves the cost of processing.
As shown in Fig. 7, which show form difference according to the mechanical character wheel 10 of the preferred embodiment in the utility model
4th kind of embodiment of light transmittance.The different light transmittances of the mechanical character wheel 10 are formed by the loophole of different pore size.Show
Example property, the region corresponding to number 0~9 sets gradually the loophole of different pore size, and the aperture of loophole is in number 0~9
Corresponding region from 0 to 9 is sequentially increased, and is divided into 10 grades.10 light transmission grades and number 0~9 correspond, aperture
The light intensity that bigger loophole can penetrate is bigger.
Preferably, the region (region pointed by B4 in figure) corresponding to number 0 is set as opaque；In digital 9 institutes
Corresponding region (region pointed by A4 in figure) uses full hollow design, and whole light is allowed to pass through.Setting in this way
Meter, saves the cost of processing.
With continued reference to Fig. 1 to Fig. 3 of attached drawing, specifically, the detection device 20 includes that optical transmitting set 21 and light connect
Receive device 22.The optical transmitting set 21 and the optical receiver 22 are separately positioned on the two sides of the mechanical character wheel 10, the machinery
Character wheel 10 can be that axis is rotated with print wheel shaft 11.The light that the optical transmitting set 21 is used to issue specific wavelength is (such as red
Outside line, visible light, ultraviolet light etc.) and across the transmission region of the mechanical character wheel 10, the optical receiver 22 receives the light
The light of the sending of transmitter 21 simultaneously generates corresponding identification signal, the identification signal and the transmission region currently passed through by light
Light transmittance correspond.
In the present embodiment, the optical transmitting set 21 is equal with the quantity of the optical receiver 22, the mechanical character wheel 10
Two sides one optical transmitting set 21 and an optical receiver 22 are respectively set.But those skilled in the art are easy reason
Solution, quantity character wheel based on light detection described in the utility model of the optical transmitting set 21 and the optical receiver 22
It is unrestricted in reading plotter, it, can be in the mechanical character wheel in other possible preferred embodiments of the utility model
10 two sides setting quantity equal multiple optical transmitting sets 21 and multiple optical receivers 22, or the two of the mechanical character wheel 10
Multiple optical transmitting sets 21 and multiple optical receivers 22 in varying numbers are arranged in side.
Preferably, the optical transmitting set 21 can be, but not limited to be the luminescent devices such as light emitting diode, laser tube.
Preferably, the optical receiver 22 can be, but not limited to be photo resistance, photodiode, phototriode, silicon
The light-sensitive devices such as photocell.
As shown in Fig. 1, the conversion circuit 30 include processing module 31, communicated to connect respectively with processing module 31 the
One analog switch 32, the second analog switch 33, constant-current source 34, analog-to-digital conversion module 35 and communication module 36.The processing mould
Block 31 controls 34 working condition of constant-current source, and the constant-current source 34 is opened for exporting specific electric current to first simulation
Close 32.First analog switch 32 is connect with the optical transmitting set 21, and the processing module 31 is by controlling first mould
Quasi- 32 pairs of the switch optical transmitting set 21 carries out constant current driving, so that the electric current that the constant-current source 34 exports can be conducted to described
Optical transmitting set 21.Second analog switch 33 is connect with the optical receiver 22 and the analog-to-digital conversion module 35 respectively.Institute
The second analog switch 33 is stated for the signal control to the optical receiver 22, the processing module 31 controls second mould
Quasi- switch 33 receives the identification signal from the optical receiver 22 and is sent to the analog-to-digital conversion module 35.
The analog-to-digital conversion module 35 carries out analog-to-digital conversion to the identification signal and transformation result is sent to the place
Manage module 31.The processing module 31 reads the transformation result and carries out data processing, by the transformation result and default threshold
Value is compared, according to different threshold values determine presently described identification signal corresponding to character wheel reading, and the character wheel is read
Be converted to corresponding electronical reading.Electronical reading is sent to external treatment by the communication module 36 by the processing module 31
End.In addition, the processing module 31 can also be received by the communication module 36 from external control command.
It will be appreciated by persons skilled in the art that the communication module 36 can be RS-485 communication, M-BUS communication
One of equal wireline communication networks.In addition, the communication module 36 or pulse communication, infrared communication, NFC, bluetooth
(Bluetooth), one of cordless communication networks such as WiFi, LoRa, NB-IoT.
Preferably, the conversion circuit 30 further comprises signal amplification module 37, and the signal amplification module 37 is distinguished
It is connect with second analog switch 33 and the analog-to-digital conversion module 35, the signal amplification module 37 is to from described second
The identification signal of analog switch 33 is re-fed into the analog-to-digital conversion module 35 after amplifying processing, and the signal amplifies mould
The setting of block 37 ensure that faint identification signal can be also resolved.
It should be understood by those skilled in the art that foregoing description and the embodiments of the present invention shown in the drawings are only used as
It illustrates and is not intended to limit the utility model.The purpose of this utility model completely and effectively realizes.The function of the utility model
Energy and structural principle show and illustrate in embodiment, under without departing from the principle, the embodiments of the present invention
Can there are any deformation or modification.
Claims (10)
1. a kind of print wheel reading device based on light detection characterized by comprising
Mechanical character wheel, the mechanical character wheel has different transmission regions, and different transmission regions has different light transmittances,
Different light transmittances reads from different character wheels and corresponds；
Detection device；And
With the conversion circuit of detection device communication connection, the detection device detects current transmission region and character wheel reading pair
The light transmittance answered simultaneously generates corresponding identification signal and is sent to the conversion circuit, and the conversion circuit is according to the identification signal
It determines current corresponding character wheel reading and character wheel reading is converted into corresponding electronical reading.
2. the print wheel reading device based on light detection as described in claim 1, which is characterized in that the difference of the mechanical character wheel
Light transmittance is formed by the different-thickness of same translucent material.
3. the print wheel reading device based on light detection as described in claim 1, which is characterized in that the difference of the mechanical character wheel
Light transmittance is formed by different translucent materials.
4. the print wheel reading device based on light detection as described in claim 1, which is characterized in that the difference of the mechanical character wheel
Light transmittance is formed by the loophole of different pore size.
5. the print wheel reading device based on light detection as described in claim 1, which is characterized in that the mechanical character wheel is by setting
The density degree of loophole is set to form different light transmittances.
6. the print wheel reading device based on light detection as described in any one of claim 1-5, which is characterized in that the detection
Device includes optical transmitting set and optical receiver, and the optical transmitting set and the optical receiver are separately positioned on the mechanical character wheel
Two sides, the light that the optical transmitting set issues pass through the transmission region of the mechanical character wheel, and the optical receiver receives the light
The light that transmitter issues simultaneously generates the identification signal, and the identification signal is saturating with the transmission region that is currently passed through by light
Luminosity corresponds.
7. the print wheel reading device based on light detection as claimed in claim 6, which is characterized in that the optical transmitting set is luminous
One of diode, laser tube or combination, the optical receiver are photo resistance, photodiode, phototriode, silicon light
One of battery or combination.
8. the print wheel reading device based on light detection as claimed in claim 6, which is characterized in that the conversion circuit includes place
Manage module, respectively with processing module communication connection the first analog switch, the second analog switch, constant-current source, analog-to-digital conversion module,
And communication module, wherein the processing module, which controls the constant-current source, exports specific electric current to first analog switch,
First analog switch is connect with the optical transmitting set, and the processing module is by controlling first analog switch to described
Optical transmitting set carries out constant current driving,
Second analog switch is connect with the optical receiver and the analog-to-digital conversion module respectively, second analog switch
It is connect with the optical receiver, the processing module controls second analog switch and receives from described in the optical receiver
Identification signal is simultaneously sent to the analog-to-digital conversion module,
The analog-to-digital conversion module carries out analog-to-digital conversion to the identification signal and transformation result is sent to the processing module,
The processing module determines that the corresponding character wheel of presently described identification signal is read according to the transformation result, and the character wheel is read
Corresponding electronical reading is converted to, electronical reading is sent to external treatment end by the communication module by the processing module.
9. the print wheel reading device based on light detection as claimed in claim 8, which is characterized in that the conversion circuit is further
Including signal amplification module, the signal amplification module connects with second analog switch and the analog-to-digital conversion module respectively
It connects, the signal amplification module is re-fed into institute after amplifying processing to the identification signal from second analog switch
State analog-to-digital conversion module.
10. the print wheel reading device based on light detection as described in any one of claim 1-5, which is characterized in that the machine
Tool character wheel has the transmission region of 10 different light transmittances.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821083589.6U CN208536875U (en) | 2018-07-09 | 2018-07-09 | A kind of print wheel reading device based on light detection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821083589.6U CN208536875U (en) | 2018-07-09 | 2018-07-09 | A kind of print wheel reading device based on light detection |
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| CN208536875U true CN208536875U (en) | 2019-02-22 |
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| CN201821083589.6U Active CN208536875U (en) | 2018-07-09 | 2018-07-09 | A kind of print wheel reading device based on light detection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112345014A (en) * | 2020-11-03 | 2021-02-09 | 上海真兰仪表科技股份有限公司 | Direct reading counter using color recognition technology |
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2018
- 2018-07-09 CN CN201821083589.6U patent/CN208536875U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112345014A (en) * | 2020-11-03 | 2021-02-09 | 上海真兰仪表科技股份有限公司 | Direct reading counter using color recognition technology |
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Address after: Hongxing Road Jiangbei District 315000 Zhejiang city of Ningbo province No. 355 Patentee after: Ningbo water meter (Group) Co.,Ltd. Address before: Hongxing Road Jiangbei District 315000 Zhejiang city of Ningbo province No. 355 Patentee before: NINGBO WATER METER Co.,Ltd. |