CN205373799U - Make a video recording and discern device of character wheel reading in airtight space - Google Patents
Make a video recording and discern device of character wheel reading in airtight space Download PDFInfo
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- CN205373799U CN205373799U CN201620076974.2U CN201620076974U CN205373799U CN 205373799 U CN205373799 U CN 205373799U CN 201620076974 U CN201620076974 U CN 201620076974U CN 205373799 U CN205373799 U CN 205373799U
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Abstract
The utility model relates to a make a video recording and discern device of character wheel reading in airtight space, which comprises an outer shell, the inside electron chamber that is provided with of shell, the inside semitransparent mirror that is provided with of electron chamber, semitransparent mirror's opposite is provided with CMOS camera and circuit board, and CMOS camera both sides are provided with the light filling lamp, the electron chamber top is provided with the transparent window to shell top transparent window position lean on the shell inboard be provided with can automatically controlled transmittance liquid crystal light valve. The device is aided with the design of unique light filling through setting up semitransparent mirror and liquid crystal light valve that can automatically controlled transmittance to the numerical accurate discernment of character wheel has been realized, and has set up the human observation window, has not influenced artifical reading, the device can directly paste and fix on original water gauge, has the low cost, high reliability and extensive implementation nature.
Description
Technical field
This utility model relates to detection technique field, particularly relates to the device of a kind of confined space imaging identification character wheel reading.
Background technology
Progress along with technology, adopting the automatic copy reading that electronization realizes three tables (water meter, ammeter, gas meter, flow meter) is inexorable trend, it is possible to effectively save human cost, reduces workload, the awkward situation that avoiding knocks at the door from house to house checks meter, and can stop to leak and copy the problem by mistake copied.Currently used water meter, gas meter, flow meter is not electronic type, also without communication interface, it is achieved remote reading has a lot of difficulty.Although existed now can the electronic water meter of remote reading, digital gas meter, but be required for realizing remote reading by changing table, workload is relatively larger, and cost is high.
Current character wheel meter reading technology substantially has several as follows, but has its drawback and deficiency:
(1) tongue tube or similar scheme: place strong magnet on character wheel, then put a similar detecting device of tongue tube in off-balancesheet face, character wheel for every revolution tongue tube adhesive once, adds up the number of turns of character wheel thereby through adhesive number of times.Being easy to be subject to the impact of external magnetic field, and this detecting device wants a direct power supply, this can use hardly for this kind of system without power supply of water meter.
(2) based on photocell correlation scheme: this scheme is to design several through hole on character wheel, then placing luminous tube in character wheel side, opposite side places photosensitive tube, after luminous tube luminescence, by reading the state of photosensitive tube, namely may know that the anglec of rotation of character wheel, thus identifying reading.This scheme cost is low, but needs his-and-hers watches to transform, and can not be power to already present water meter.
(3) external optoelectronic pipe correlation scheme: this scheme is a kind of improvement of (2), by installing a small magnet on water meter indicator, then magnetic coupling device and character wheel is placed at water gage glass place, thus synchronizing by the rotation of two character wheels, have do not need a direct power supply and not needing significantly transform water meter advantage.But easily by magnetic disturbance.
(4) photographic head reads character wheel image.Also rest on acquisition character wheel image at present, it does not have very well environment light is controlled, it is impossible to numeral is effectively identified.It addition, do not stayed observation window, device is too thick too big, is unfavorable for installing and using, and this scheme is seldom used.
Utility model content
In order to overcome drawbacks described above, this utility model provides the device of a kind of confined space imaging identification character wheel reading, in order to be read out for water meter character wheel numeral better.
To achieve these goals, the technical solution of the utility model is as follows.
The device of a kind of confined space imaging identification character wheel reading, including shell, described enclosure is provided with electronics storehouse；Described electronics storehouse is internally provided with semi-transparent semi-reflecting lens, described semi-transparent semi-reflecting lens be provided opposite to CMOS camera and circuit board, CMOS camera both sides are provided with light compensating lamp, described electronics storehouse is not provided with transparency window up and down, and be provided with inside the outer shell in transparency window position above shell can the liquid crystal light valve of automatically controlled transmittance；Transparency window top is provided with dust cap, and is furnished with elastic force apparatus, and when without External Force Acting, this enclosing cover is closed.
Further, semi-transparent semi-reflecting lens to the reflecting rate of white light and light transmittance all about 50%.Semi-transparent semi-reflecting lens is placed on the top of transparency window below shell, with transparency window plane below shell in angle of 45 degrees.After this device installs, this half-reflecting half mirror just just to character wheel code-disc, therefore semi-transparent semi-reflecting lens by character wheel code-disc video imaging at CMOS camera dead ahead.Light that character wheel code-disc an emits part is reflected into CMOS camera through semi-transparent semi-reflecting lens；Transparency window above another part light transmission semi-transparent semi-reflecting lens directive, and finally through transparency window, check reading for human eye.Adopt semi-transparent semi-reflecting lens that optical angle have rotated 90 degree, coordinate the CMOS camera of short focus, therefore this crust of the device THICKNESS CONTROL is to about 20mm.
Further, above shell, be provided with can the liquid-crystalline glasses of automatically controlled transmittance at the inner surface place of transparency window.This liquid-crystalline glasses is fully transparent time not powered, checks meter reading through this liquid-crystalline glasses and half-reflecting half mirror.When needs reading, liquid-crystalline glasses can be powered up, thus not allowing extraneous light enter this device, thus avoiding the ambient light impact on reading.Above this liquid-crystalline glasses and shell, observation window is in the same size, operate the same with common segment liquid crystal, is only one rectangular " section ", by whether two pins can control the printing opacity of this section.
Further, being respectively provided with a transparency window above and below shell, other positions of shell are opaque.Transparency window above shell reads character wheel information for human eye, and the transparency window below shell allows the light shot out from character wheel enter photographic head and human eye.Other parts of shell adopt frosting technology, it is to avoid environment light enters housing, and the reading of photographic head is produced impact.And enclosure have employed the black paper of patch and spraying coating process, drop low ambient light further and enter housing.
Further, semi-transparent semi-reflecting lens both sides are provided with white light LEDs as light compensating lamp.Light filling LED illuminates from both sides to character wheel, and LED center light emission direction becomes about 18 degree angles with lower section transparency window.
Further, being provided with one-chip computer module in circuit board, one-chip computer module includes single-chip microcomputer, and single-chip microcomputer is connected to communication module, CMOS camera module and light compensating lamp.
Further, shell is made up of upper and lower two parts, has sealing ring in the middle of two parts, it is ensured that seal waterproof after assembling.Shell adopts cylindrical configuration, it is possible to be bonded on water gage glass face with glue very easily.Lower casing is provided with transparency window, and window is provided above semi-transparent semi-reflecting lens；It addition, be provided above enclosing cover at shell, and being furnished with elastic force apparatus, when without External Force Acting, this form enclosing cover is closed.
Single-chip microcomputer is 32 bit processors, built-in FLASH and RAM, reduces cost and volume.There is quick disposal ability, mass data that CMOS camera module transfer comes can be accepted and store process.Single-chip microcomputer is by detecting the frame synchronizing signal of photographic head, thus identifying the beginning of a frame.And the gradation data of each pixel is correctly caught by synchronizing clock signals.It is configured after powering on by single-chip microcomputer by the configuration interface of camera chip, opens light compensating lamp, and catches image information.By the morphological characteristic identification to image, thus converting the image into digital signal.
Having the beneficial effects that of this utility model: this device by arrange semi-transparent semi-reflecting lens and can the liquid crystal light valve of automatically controlled transmittance, be aided with the light filling design of uniqueness, it is achieved thereby that the accurate identification of wheel digital；And it is provided with manual observation window, does not affect artificial reading；This device can directly be pasted and fixed on original water meter, has low cost, high reliability and widely implementation.
Accompanying drawing explanation
Device vertical structure schematic diagram in Fig. 1, this utility model embodiment.
Fig. 2, this utility model embodiment device plan structure schematic diagram.
Fig. 3, this utility model embodiment device functional block diagram.
Description of symbols in figure: 1, can the liquid crystal light valve of automatically controlled transmittance；2, circuit board；3, CMOS camera；4, light compensating lamp；5, water meter；6, character wheel code-disc；7, semi-transparent semi-reflecting lens；8, electronics storehouse；9, transparency window；10, dust cap.
Detailed description of the invention
Below in conjunction with drawings and Examples, detailed description of the invention of the present utility model is described, in order to be better understood from this utility model.
Embodiment
Confined space imaging identification print wheel reading device as described in Figure 1, including shell, enclosure is provided with electronics storehouse 8, electronics storehouse 8 is internally provided with semi-transparent semi-reflecting lens 7, semi-transparent semi-reflecting lens 7 is arranged on electronics storehouse 8 bottom position, semi-transparent semi-reflecting lens 7 be provided opposite to CMOS camera and circuit board, half-reflecting half mirror both sides are provided with light compensating lamp 4, and light compensating lamp 4 is white light light filling LED；Shell upper and lower is respectively arranged with a transparency window 9, and transparency window 9 top is provided with dust cap 10, and is furnished with elastic force apparatus, and when without External Force Acting, this enclosing cover is closed.Top, electronics storehouse 8 is provided with transparency window 9, and being provided with inside the outer shell in transparency window 9 position above shell can the liquid crystal light valve 1 of automatically controlled transmittance.This crust of the device is placed on the glass of water meter 5 and uses.Fig. 2 is the plan structure schematic diagram of this utility model embodiment device.Fig. 3 is the functional block diagram of this utility model embodiment device.
As it is shown on figure 3, be provided with one-chip computer module in circuit board, one-chip computer module includes single-chip microcomputer, and single-chip microcomputer is connected to communication module, CMOS camera module and light compensating lamp.
CMOS camera 3 includes CMOS camera chip and camera lens；CMOS camera chip adopts CSP encapsulation, has the definition of 300,000 pixels.Camera lens is the camera lens of short focus.CMOS camera chip adopts synchronous bus that image gradation data is transferred to single-chip microcomputer.
As it is shown in figure 1, semi-transparent semi-reflecting lens 7 is placed on the top of transparency window below shell, semi-transparent semi-reflecting lens 7 with lower section transparency window 9 in angle of 45 degrees, by the video imaging of character wheel code-disc 6 at CMOS camera 3 dead ahead.The light part that character wheel code-disc 6 emits enters CMOS camera 3 through semi-transparent semi-reflecting lens 7, and another part is penetrated by the transparency window 9 of top.
Shell is made up of upper and lower two parts, adds rubber blanket, adopt and be screwed two parts between two parts.Shell adopts the cylindrical configuration consistent with water meter, can be bonded on table tool outer surface with glue very easily.Upper casing has rectangular manual observation window, and user can pass through this window it can be seen that numeral character wheel and all decimal place runners indicate.Except upper and lower transparent window, other parts of shell adopt frosting technology, paste black paper technique and spraying coating process, it is ensured that light tight, reduce environment light and photographic head are taken pictures the impact of effect.It addition, have enclosing cover in upper casing arranged outside, and being furnished with elastic force apparatus, when without External Force Acting, this enclosing cover is closed.
The above is preferred implementation of the present utility model; it should be pointed out that, for those skilled in the art, under the premise without departing from this utility model principle; can also making some improvements and modifications, these improvements and modifications are also considered as protection domain of the present utility model.
Claims (7)
1. the device of a confined space imaging identification character wheel reading, including shell, it is characterized in that: described enclosure is provided with electronics storehouse, described electronics storehouse is internally provided with semi-transparent semi-reflecting lens, described semi-transparent semi-reflecting lens be provided opposite to CMOS camera and circuit board, CMOS camera both sides are provided with light compensating lamp, and top, described electronics storehouse is provided with transparency window, and be provided with inside the outer shell in transparency window position above shell can the liquid crystal light valve of automatically controlled transmittance；Transparency window top is provided with dust cap, and is furnished with elastic force apparatus.
2. the device of confined space imaging identification character wheel reading according to claim 1, it is characterised in that: described semi-transparent semi-reflecting lens can reflect a part of light and through a part of light；Semi-transparent semi-reflecting lens is placed on the top of transparency window below shell, with transparency window plane below shell in angle of 45 degrees.
3. the device of confined space imaging identification character wheel reading according to claim 1, it is characterised in that: above described shell, be provided with can the liquid crystal light valve of automatically controlled transmittance at the inner surface place of transparency window.
4. the device of confined space imaging identification character wheel reading according to claim 1, it is characterised in that: being respectively provided with a transparency window above and below described shell, other positions of shell are opaque.
5. the device of confined space imaging identification character wheel reading according to claim 1, it is characterised in that: described semi-transparent semi-reflecting lens both sides are provided with white light LEDs as light compensating lamp.
6. the device of confined space imaging identification character wheel reading according to claim 1, it is characterised in that: being provided with one-chip computer module in circuit board, one-chip computer module includes single-chip microcomputer, and single-chip microcomputer is connected to communication module, CMOS camera module and light compensating lamp.
7. the device of confined space imaging identification character wheel reading according to claim 1, it is characterised in that: described shell is made up of upper and lower two parts, has sealing ring in the middle of two parts, it is ensured that seal waterproof after assembling；Shell adopts cylindrical configuration；Lower casing has the transparent window corresponding with character wheel code-disc, and transparent window is arranged above with semi-transparent semi-reflecting lens；Being provided with manual observation window on upper casing, be provided with enclosing cover, and be furnished with elastic force apparatus outside upper casing, when without External Force Acting, this enclosing cover is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620076974.2U CN205373799U (en) | 2016-01-27 | 2016-01-27 | Make a video recording and discern device of character wheel reading in airtight space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620076974.2U CN205373799U (en) | 2016-01-27 | 2016-01-27 | Make a video recording and discern device of character wheel reading in airtight space |
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| CN205373799U true CN205373799U (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620076974.2U Active CN205373799U (en) | 2016-01-27 | 2016-01-27 | Make a video recording and discern device of character wheel reading in airtight space |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547393A (en) * | 2016-01-27 | 2016-05-04 | 青岛东软载波智能电子有限公司 | Device for recognizing digital code wheel reading through closed space camera shooting |
| CN114979820A (en) * | 2022-04-15 | 2022-08-30 | 深圳市安卫普科技有限公司 | Intelligent meter reading device, remote meter reading method and system |
-
2016
- 2016-01-27 CN CN201620076974.2U patent/CN205373799U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547393A (en) * | 2016-01-27 | 2016-05-04 | 青岛东软载波智能电子有限公司 | Device for recognizing digital code wheel reading through closed space camera shooting |
| CN114979820A (en) * | 2022-04-15 | 2022-08-30 | 深圳市安卫普科技有限公司 | Intelligent meter reading device, remote meter reading method and system |
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