CN110166738A - It is a kind of based on infrared intelligence instrument sensor device and system - Google Patents
It is a kind of based on infrared intelligence instrument sensor device and system Download PDFInfo
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- CN110166738A CN110166738A CN201910270985.2A CN201910270985A CN110166738A CN 110166738 A CN110166738 A CN 110166738A CN 201910270985 A CN201910270985 A CN 201910270985A CN 110166738 A CN110166738 A CN 110166738A
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- 239000000523 sample Substances 0.000 claims abstract description 56
- 238000012545 processing Methods 0.000 claims abstract description 21
- 238000004891 communication Methods 0.000 claims abstract description 16
- 238000009434 installation Methods 0.000 claims description 10
- 239000002390 adhesive tape Substances 0.000 claims description 9
- 230000003287 optical effect Effects 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 6
- 230000003993 interaction Effects 0.000 claims description 3
- 108091008695 photoreceptors Proteins 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims 1
- 238000012857 repacking Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 3
- 238000013135 deep learning Methods 0.000 description 2
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
- G08C23/04—Non-electrical signal transmission systems, e.g. optical systems using light waves, e.g. infrared
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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Abstract
The present invention provides a kind of based on infrared intelligence instrument sensor device, including probe module, it includes that strip or fan-shaped shell and luminous/photosensitive electronic element array of several groups at housing bottom surface, luminous/photosensitive electronic element array of the several groups are arranged along long side/arc side direction of housing bottom surface；Mainboard module comprising box body and be set to the intracorporal mainboard of box and battery modules, embeded processor unit and wireless communication unit are configured on the mainboard；And FPC circuit line, it is used to connect the probe module and mainboard module.Intelligence instrument sensor device of the invention, can in the case where not carrying out any repacking to tradition machinery instrument acquisition instrument real time readouts range and pin-point reading, and pass through network carry out remote transmission processing.
Description
Technical field
The present invention relates to sensor technical fields, and in particular to a kind of intelligence instrument sensor device and system.
Background technique
In industrial circle there is many traditional machinery instruments (pressure gauge, thermometer, hygrometer etc.), they are entire
There is irreplaceable role in production procedure and storage is huge.The reading of these current conventional instruments and maintenance are mainly manually
Reading, mobile phone photograph and timing manual inspection.With wisdom factory, made in China 2025 flourishes, to the intelligence of instrument
Change and propose new demand: can automatic uploaded state and reading.Meanwhile large quantities of intelligence instruments are also emerged: having needed to existing
The instrument of producing line carries out repacking or completely replacement.But sufficient verifying, and such flood tide is not obtained in its reliability
Instrument repacking and replacement be related to producing line shut down and a large amount of expense.
Summary of the invention
Present invention solves the technical problem that being to provide a kind of based on infrared intelligence instrument sensor device and system, energy
In the case where not carrying out any repacking to tradition machinery instrument (pressure gauge, thermometer, hygrometer etc.), acquisition instrument is real-time
Range of readings and pin-point reading, and remote transmission processing is carried out by network.
To solve the above problems, present invention employs following technical solutions:
The first aspect of the invention provides a kind of based on infrared intelligence instrument sensor device, comprising:
Probe module a comprising shell, the shell are equipped with luminous/photosensitive electronic component battle array of several groups at bottom surface
Column；The first fixed cell for being fixed on probe module on meter panel is additionally provided on the bottom surface of the shell；
Mainboard module comprising box body and the intracorporal mainboard of box and battery modules are set to, configured with processing on the mainboard
Device unit and wireless communication unit, the processor unit for control it is described shine/photosensitive electronic element array shine and
The photoreceptor signal that processing photosensitive element is sent is received, the wireless communication unit couples processor unit, is used for and external device (ED)
Communication；The battery modules are used to power to mainboard module and probe module；
And FPC circuit line, it is used to connect the probe module and mainboard module；
Wherein, luminous/photosensitive electronic element array of the several groups is programmable light emitting/photosensitive electronic element array, institute
State luminous/photosensitive electronic component collaboration of one or more of described luminous/photosensitive electronic element array of processor unit control
Work is to determine the pointer position on meter panel.
Further, the processor unit controls one or more hairs in luminous/photosensitive electronic element array
Light/photosensitive electronic component collaborative work is specifically included with the pointer position determined on meter panel:
Step 1: the processor unit with cycle T control illuminating electronic element Tx1, Tx2 ... Txn is luminous simultaneously, together
When control photosensitive electronic component Rx1, Rx2 ... Rxn receive optical signal；
Step 2: processor unit is distributed according to the received optical signal of each photosensitive electronics member determines instrument after N number of period
Pointer in disk is located between luminous/photosensitive electronic component Txm/Rxm and Txm+1/Rxm+1,1≤m < n；
Step 3: processor unit control the illuminating electronic element Txm and Txm+1 shine, while controlling photosensitive electronics
Element Rxm and Rxm+1 is photosensitive, determines the exact position of the pointer on meter panel:
Total indicator reading
Wherein,The upper limit to determine when installation probe module reads the difference that Q and lower limit read P, Z be when pointer just
Similarity-Pearson came correlation of photosensitive benchmark and Rxm and Rxm+1 photosensitive value when below Txm/Rxm.
Further, the shell of the probe module is elongated or fan-like pattern, luminous/photosensitive electronics of the several groups are first
Part array is arranged along the long side of shell or arc side direction.
Further, the wireless communication unit is low-power consumption bluetooth mould group.
Further, first fixed cell includes the adhesive tape in housing bottom surface, and the adhesive tape covers when factory
There is protection oilpaper.
Further, the box body is also configured with the second fixed cell, and second fixed cell includes being mutually matched
Two panels velcro, wherein the back side of a piece of velcro is bonded fixation with box body, the back side of another velcro is Pasting glue surface.
The second aspect of the invention additionally provides a kind of based on infrared intelligence instrument sensing system, comprising:
At least one intelligence instrument sensor device as described in first aspect of the present invention；
And the client terminal with intelligence instrument sensor device communication connection；
Wherein, the client terminal include processing storage unit, and connection processing storage unit data transceiving unit,
Image acquisition units, image processing unit and display unit, the data transceiving unit are used for and the intelligence instrument sensor
Device carries out data interaction, and described image acquisition unit installs the intelligence instrument sensor device for shooting instrument dial
The picture of front and back, described image processing unit are used to handle the image of image acquisition units shooting, and logical based on property data base
Cross deep learning identification dial plate type, indicator position, probe module position, the reading section of dial plate and pointer and probe module
Between angle；The display unit is for showing recognition result and reading information.
Further, the property data base is installing the intelligence instrument biography by the various types of existing instrument collected
Acquisition image obtains after processing before and after sensor arrangement.
Further, described image processing unit is also used to newly acquire and treated that image data is added to the feature
In database.
Further, when the intelligence instrument sensor device is more than one, each probe module passes through splicing covering
Pointer rotating range on instrument dial to be monitored.
Beneficial effects of the present invention:
Intelligence instrument sensor device of the invention, based on the programmable light emitting on its probe module/photosensitive electronic component
Processor unit on array and mainboard module improves, it can be achieved that accurate reading to total indicator reading on conventional instrument dial
Reading accuracy, while significant increase is equipped with the equipment of conventional instrument or the intelligence degree of factory.Meanwhile compared to existing
The similar device of instrument dial is completely covered in some need, has structure simple, at low cost, can be based on instrument dial
The advantages of pointer rotating range is precisely installed, and easy for installation, does not influence the normal reading of instrument dial after mounting.
Intelligence instrument sensing system of the invention, based on above-mentioned intelligence instrument sensor device and client terminal, energy
The intelligent remote reading for enough realizing conventional instrument, has a good application prospect in the transformation of wisdom factory.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the first embodiment of intelligence instrument sensor device of the invention.
Fig. 2 is the scheme of installation of probe module in the intelligence instrument sensor device of Fig. 1 embodiment.
Fig. 3 is the structural schematic diagram of second of embodiment of intelligence instrument sensor device of the invention.
Fig. 4 is the scheme of installation of probe module in the intelligence instrument sensor device of Fig. 3 embodiment.
Fig. 5 is luminous/photosensitive electronic element array arrangement and the measurement model of the probe module of the first embodiment of the invention
Enclose schematic diagram.
Fig. 6 is the photosensitive received optical signal distribution schematic diagram of electronic component in the embodiment of the present invention.
Fig. 7 is the workflow schematic diagram of client terminal in the embodiment of the present invention.
Fig. 8 is that multiple probe modules splice and combine the schematic diagram being installed on meter panel in the embodiment of the present invention.
Specific embodiment
For a further understanding of the present invention, the preferred embodiment of the invention is described below with reference to embodiment, still
It should be appreciated that these descriptions are only further explanation the features and advantages of the present invention, rather than to the claims in the present invention
Limitation.
Embodiment 1
One embodiment of the invention provide it is a kind of based on infrared intelligence instrument sensor device, as shown in Figure 1,
Comprising:
Probe module 1 comprising a strip shell, strip housing bottom surface are equipped with along evenly distributed several of long side
Luminous/photosensitive electronic element array 10 of group；
Mainboard module 2 comprising box body and be set to the intracorporal mainboard of box and battery modules, processor list is configured on mainboard
Member and wireless communication unit.Wherein, processor unit for control luminous/photosensitive electronic element array 10 shine and receiving area
The photoreceptor signal that photosensitive element is sent is managed, wireless communication unit couples processor unit, is used for and communication with external apparatus；Battery mould
Group is for mainboard module and probe module power supply；
And FPC circuit line 3, connect probe module 1 and mainboard module 2, the transmitting for electric current and signal.
In order to which probe module to be fixed on instrument dial, it is solid that first is additionally provided on the bottom surface of the shell of probe module 1
Order member.In the present embodiment, which is the adhesive tape (being not drawn into figure) along the circle setting of housing bottom surface one, the glue
Band is covered with protection oilpaper when factory；It tears protection oilpaper when use off, probe module can be pasted on instrument dial
Corresponding position.
As shown in Fig. 2, first model can be rotated in the pointer 40 of instrument dial 4 when the probe module in the present embodiment is pasted
Auxiliary adhesive tape 51,52 is pasted at the bound enclosed, then the middle line by probe module 1 perpendicular to auxiliary adhesive tape 51,52 angles glues
Be attached on instrument dial 4 (adhesive tape 51,52 probe module position determine after it is i.e. tear-off；In order to intuitive in figure, picture view
Angle is to look up from the lower section of instrument dial 4).
It is strip by probe module in this present embodiment, and small volume, therefore do not influence instrument scale after mounting
The normal reading of disk.
Embodiment 2
Second embodiment of the invention provide it is a kind of based on infrared intelligence instrument sensor device, as shown in figure 3,
It includes probe module 1 ', mainboard module 2 and FPC circuit line 3.Wherein, mainboard module 2 and FPC circuit line 3 are in embodiment 1
Middle explanation, therefore not to repeat here.
In the present embodiment, the shell of probe module 1 ' is fan-like pattern, and luminous/photosensitive 10 edge of electronic element array thereon
The arc side direction of shell is staggered.
Probe module 1 ' in the present embodiment, housing bottom surface are again provided with the adhesive tape in similar embodiment, so as to incite somebody to action
Probe module 1 ' is pasted on instrument dial.
As shown in figure 4, when the probe module 1 ' in the present embodiment is pasted, the center at covering of the fan center and instrument dial 4
It is overlapped, arc side corresponds to the rotating range of pointer 40, so that luminous/photosensitive electronic element array 10 can cover the rotation model of pointer 40
It encloses.
Likewise, be fan-like pattern by probe module in this present embodiment, and small volume, therefore instrument is not influenced after mounting
The normal reading of table dial.
Preferably, in of the invention first and second embodiment, luminous/photosensitive electronic component battle array
The column selection infrared light-emitting diode and infrared light sensitive diode being arranged in pairs, by programmable drive module driving, it can be achieved that appointing
Meaning single or multiple elements shine and/or it is photosensitive.
Preferably, the processor unit in of the invention first and second embodiment, on mainboard
Using programmable device FPGA or single-chip microcontroller, wireless communication unit is low-power consumption bluetooth mould group.
Preferably, in of the invention first and second embodiment, second is also configured on box body 2
Fixed cell, which is preferably the two panels velcro being mutually matched, wherein the back side of a piece of velcro and box body
Fitting is fixed, and the back side of another velcro is Pasting glue surface.When installation, the Pasting glue surface Pasting is in instrument dial
On non-pointer rotating range or other suitable positions on, then by be set to box body on velcro box body is fixed.
Simultaneously as FPC circuit line 3 is flexible, so that the fixation of box body 2 there can be biggish range of choice, it is allowed to installation and has more
Flexibility.
Preferably, in of the invention first and second embodiment, processor unit control shine/
Luminous/photosensitive electronic component of one or more of photosensitive electronic element array cooperates to determine the pointer on meter panel
Position.It is further described combined with specific embodiments below.
Embodiment 3
As shown in figure 5, being installed on the schematic diagram on instrument dial 4 for a probe module.The probe module be equipped with by
The array that tetra- groups of Tx1/Rx1, Tx2/Rx2, Tx3/Rx3, Tx4/Rx4 luminous/photosensitive electronic components are constituted.On instrument dial 4
The lower limit (reading) of the rotating range of pointer is P, and the upper limit (reading) is Q, and pointer theory rotating range is
In the present embodiment, one or more of luminous/photosensitive electronic element array of processor unit control is luminous/photosensitive
Electronic component cooperates with the detailed process for determining the pointer position on meter panel
Step 1: processor unit with periods of 500 nanoseconds control illuminating electronic element Tx1, Tx2 ... Txn is sent out simultaneously
Light, at the same control photosensitive electronic component Rx1, Rx2 ... Rxn receive optical signal；
Step 2: processor unit is according to the received optical signal of each photosensitive electronics member after 10 or more sampling periods
It is distributed the pointer Position Approximate determined on meter panel.
When entering the sensing region of photosensitive electronic component due to the pointer of rotation, refers to and generate diffusing reflection for light and absorb existing
As the optical information of reflected light when reflected light and pointer at this time does not enter sensing region has very big difference, according to the difference
Feature can be detected out the Position Approximate of pointer.
It is illustrated in figure 6 the photosensitive received surface of intensity distribution of electronic component Rx1, Rx2, Rx3 and Rx4 after once sampling, from
It can substantially determine pointer position between Tx2/Rx2 and Tx3/Rx3 in figure.The purpose of multiple repairing weld is to avoid single or adopt for few time
Sample caused by disturbing factor because judging by accident.
The existing literature that the technical solution of Position Approximate based on multiple photosensitive elements detection pointer is disclosed, principle
It is relatively simple with implementation, therefore be not described in further detail herein.Accurately determination is further illustrated below in the present invention to refer to
The method of pin position.
Step 3: based on above-mentioned Preliminary detection as a result, processor unit control illuminating electronic element Tx2 and Tx3 shine,
It controls that photosensitive electronic component Rx2 and Rx3 is photosensitive simultaneously, and then determines the exact position of the pointer on meter panel:
Total indicator reading
Wherein,The upper limit to determine when installation probe module reads Q and lower limit reads the difference of P.β is that pointer is close
The angle of Tx2, when on the basis of the photosensitive value of Rx2, calculating Tx2/Tx3 transmitting when pointer is just below Tx2/Rx2, the benchmark
It is extremely strong related to the similarity of Rx2 and Rx3 photosensitive value-Pearson came correlation Z:0.8-1.0；0.6-0.8 strong correlation；0.4-0.6
Moderate correlation；The weak correlation of 0.2-0.4；0.0-0.2 is extremely weak related or without correlation；
Based on the above method, that is, it can determine the pin-point reading of the pointer on meter panel.
Embodiment 4
4th embodiment of the invention provides a kind of based on infrared intelligence instrument sensing system, comprising:
At least one such as embodiment 1 or implement 2 as described in intelligence instrument sensor device；
And the client terminal with intelligence instrument sensor device communication connection；
Wherein, client terminal is chosen as being installed on the APP on smart phone comprising processing storage unit, and connection
Handle data transceiving unit, image acquisition units, image processing unit and the display unit of storage unit.Data transceiving unit
(wifi or bluetooth module of such as mobile phone) is used to carry out data interaction with intelligence instrument sensor device, and image acquisition units are (such as
The camera of mobile phone) for shooting the picture before and after instrument dial installs intelligence instrument sensor device, image processing unit
Dial plate type, indicator are identified by deep learning for handling the image of image acquisition units shooting, and based on property data base
Position, probe module position, dial plate reading section and pointer and probe module between angle；Display unit (such as mobile phone
Display screen) for showing recognition result and received reading information.It is illustrated in figure 7 a reality of client terminal in the present embodiment
Example workflow schematic diagram.
Based on above-mentioned client, user can long-distance intelligent identification be equipped with probe module dial plate model,
The angle etc. between section, probe module position and probe module is read, so as to whether standardize and read feelings to installation
Condition carries out respective alignment, and can remotely obtain reading as a result, can also manually be compared to abnormal results.
Embodiment as a further preference, above-mentioned property data base are existed by the various types of existing instrument collected
Acquisition image obtains after processing before and after intelligence instrument sensor device in the installation embodiment of the present invention.
Meanwhile when image processing unit collects the image of new type, will can also newly it acquire and treated image
Data are added in the property data base, further to improve this feature database.
Embodiment 5
As shown in figure 8, the 5th embodiment of the invention is provided when the pointer rotating range on instrument dial 4 exceeds
When the monitoring range of one probe module, is spliced and combined and read using multiple probe module 1a, 1b, 1c, 1d.
Using multiple probe modules, the gauge pointer of big rotating range can be read, to expand the present invention
Intelligence instrument sensor the scope of application.When using multiple probe modules, each probe module is using in previous embodiment
Mode works independently, and carries out pin-point reading to pointer by the probe module of covering pointer, and last detection structure is pooled to client
End, can be completed remote reading.
The above description of the embodiment is only used to help understand the method for the present invention and its core ideas.It should be pointed out that pair
For those skilled in the art, without departing from the principle of the present invention, the present invention can also be carried out
Some improvements and modifications, these improvements and modifications also fall within the scope of protection of the claims of the present invention.
Claims (10)
1. a kind of based on infrared intelligence instrument sensor device characterized by comprising
Probe module a comprising shell, the shell are equipped with luminous/photosensitive electronic element array of several groups at bottom surface；Institute
State the first fixed cell being additionally provided on the bottom surface of shell for being fixed on probe module on meter panel；
Mainboard module comprising box body and be set to the intracorporal mainboard of box and battery modules, processor list is configured on the mainboard
Member and wireless communication unit, the processor unit shine and receive for controlling luminous/photosensitive electronic element array
The photoreceptor signal that photosensitive element is sent is handled, the wireless communication unit couples processor unit, is used for and communication with external apparatus；
The battery modules are used to power to mainboard module and probe module；
And FPC circuit line, it is used to connect the probe module and mainboard module；
Wherein, luminous/photosensitive electronic element array of the several groups is programmable light emitting/photosensitive electronic element array, the place
Luminous/photosensitive electronic component of one or more of described luminous/photosensitive electronic element array of device unit control is managed to cooperate
To determine the pointer position on meter panel.
2. as described in claim 1 based on infrared intelligence instrument sensor device, which is characterized in that the processor unit
Luminous/photosensitive electronic component of one or more of described luminous/photosensitive electronic element array is controlled to cooperate to determine instrument
Pointer position on watch face specifically includes:
Step 1: the processor unit with cycle T control illuminating electronic element Tx1, Tx2 ... Txn is luminous simultaneously, same to time control
Make photosensitive electronic component Rx1, Rx2 ... Rxn receive optical signal；
Step 2: processor unit is distributed according to the received optical signal of each photosensitive electronics member determines meter panel after N number of period
On pointer be located at shine/photosensitive electronic component Txm/Rxm and Txm+1/Rxm+1 between, 1≤m < n；
Step 3: processor unit control the illuminating electronic element Txm and Txm+1 shine, while controlling photosensitive electronic component
Rxm and Rxm+1 are photosensitive, determine the exact position of the pointer on meter panel:
Total indicator reading
Wherein,The upper limit to determine when installation probe module reads Q and lower limit reads the difference of P, and Z is when pointer just exists
Similarity-Pearson came correlation of photosensitive benchmark and Rxm and Rxm+1 photosensitive value when below Txm/Rxm.
3. as described in claim 1 based on infrared intelligence instrument sensor device, which is characterized in that the probe module
Shell is elongated or fan-like pattern, luminous/photosensitive electronic element array of the several groups are arranged along the long side of shell or arc side direction
Cloth.
4. as described in claim 1 based on infrared intelligence instrument sensor device, which is characterized in that the wireless communication is single
Member is low-power consumption bluetooth mould group.
5. as described in claim 1 based on infrared intelligence instrument sensor device, which is characterized in that described first is fixed single
Member includes the adhesive tape in housing bottom surface, and the adhesive tape is covered with protection oilpaper when factory.
6. as described in any one in claim 1-5 based on infrared intelligence instrument sensor device, which is characterized in that the box
Body is also configured with the second fixed cell, and second fixed cell includes the two panels velcro being mutually matched, wherein a piece of magic
The back side of patch is bonded fixation with box body, and the back side of another velcro is Pasting glue surface.
7. a kind of based on infrared intelligence instrument sensing system characterized by comprising
At least one intelligence instrument sensor device as claimed in any one of claims 1 to 6；
And the client terminal with intelligence instrument sensor device communication connection；
Wherein, the client terminal includes processing storage unit, and data transceiving unit, the image of connection processing storage unit
Acquisition unit, image processing unit and display unit, the data transceiving unit are used for and the intelligence instrument sensor device
Data interaction is carried out, described image acquisition unit installs the intelligence instrument sensor device front and back for shooting instrument dial
Picture, described image processing unit is used to handle the image of image acquisition units shooting, and passes through depth based on property data base
Degree study identification dial plate type, indicator position, probe module position, dial plate reading section and pointer and probe module between
Angle；The display unit is for showing recognition result and reading information.
8. as claimed in claim 7 based on infrared intelligence instrument sensing system, which is characterized in that the property data base by
The various types of existing instrument collected acquisition image before and after installing the intelligence instrument sensor device obtains after processing.
9. as claimed in claim 8 based on infrared intelligence instrument sensing system, which is characterized in that described image processing unit
It is also used to newly acquire and treated that image data is added in the property data base.
10. as claimed in claim 7 based on infrared intelligence instrument sensing system, which is characterized in that the intelligence instrument passes
When sensor arrangement is more than one, each probe module covers the pointer on instrument dial to be monitored by splicing and rotates model
It encloses.
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| CN201910270985.2A CN110166738B (en) | 2019-04-04 | 2019-04-04 | Infrared-based intelligent instrument sensor device and system |
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| CN201910270985.2A CN110166738B (en) | 2019-04-04 | 2019-04-04 | Infrared-based intelligent instrument sensor device and system |
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| CN109238322A (en) * | 2018-06-22 | 2019-01-18 | 杭州摩焕科技有限公司 | It is a kind of that system is monitored based on infrared transmitting tube and the pointer instrument of reception pipe |
| CN108759945A (en) * | 2018-08-07 | 2018-11-06 | 智恒科技股份有限公司 | A kind of light pulse sensor of intellectual water meter |
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