CN1423240A - Metrical instrument graphical-display digitalized network long-distance transmission technical scheme - Google Patents
Metrical instrument graphical-display digitalized network long-distance transmission technical scheme Download PDFInfo
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- CN1423240A CN1423240A CN 01138768 CN01138768A CN1423240A CN 1423240 A CN1423240 A CN 1423240A CN 01138768 CN01138768 CN 01138768 CN 01138768 A CN01138768 A CN 01138768A CN 1423240 A CN1423240 A CN 1423240A
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Abstract
The invention belongs to the technical area of the integrating of the optics, mechanics and electronics utilizing the optical, mechanical and automatic control technique synthetically. The invention is applicable to the remote automatic measurement and the charge management of the measuring instruments. The invention comprises the data acquisition module of the gauges (primary gauges of water, electricity, gas and heat), the optoelectronic conversion module, the A/D conversion module, the data communication module, the pattern recognition module, the control module 20 and the graphics display module etc. In the invention, the present technique is improved by using the remote transmission technique of the digital network in the graphic display so as to guarantee the reliability for transmitted data.
Description
Integrated use of the present invention multinomial technology such as optics, mechanics, automatic control technology, microelectric technique, mechanics of communication, network technology, computer technology, the infiltration of multidisciplinary intersection belongs to light, electromechanical integration technology area.
The present invention is mainly used in the remote auto metering and the toll administration of various measuring instruments.In this application present situation both domestic and external be:
Automatic meter reading system (AMR) is the history of existing more than ten years abroad, just is used for the instrument automatic reading of industrial circle at first, had developed into afterwards in the automatic data logging of apartment and flats.The automatic data logging technology of U.S.'s rural power grids mainly is to realize by approach such as telephone wire, power line carrier, microwave or radio transmission; The meter-copy device of Hunt company development transmits (" U.S.'s rural power grids automatic data logging technology brief introduction " Su Jianyi " electrification of the countryside " 11 phases of nineteen ninety-five) by power line carrier.The optically-coupled adapter that Japan FUJI electric corporation will be used on the instrument such as coal gas, water meter is installed between TNC and the instrument, and connects center automatic data logging equipment (JP10079529/FUJI ELECTRIC CO LTD) by telephone wire.
Because domestic measuring control amount is big, and is wide grade for cause specific makes domestic demand in this respect considerably beyond abroad.Domestic research in this field has at present formed focus, the method that adopts is different, such as, have by installing photoelectric conversion circuit additional to make induction type electric energy meter output pulse signal [induction type electric energy meter is exported digitized a kind of new method/thunderous bright // electrical measurement and instrument .-1996 (11)-7-11].Also have with the portable microcomputer is extended core, adopt numerical coding, technology such as a touch-tone signal coding and a lock modulation utilize power line carrier to realize the system [microcomputer Automatic meter reading system/Xiao Shengbing // electronic technology .-1997 (3) 18-21] of data transmission.Respectively there are relative merits in above-mentioned system both domestic and external.But all ignored two vital basic problems: the one, the accuracy problem of sensor; The 2nd, the problem in serviceable life of system.The result of these two problem superpositions will have a strong impact on the reliability of system, and then hinder the smooth implementation of Automatic meter reading system industrialization.Domestic Automatic meter reading system all adopts the pulsed teletransmission once to show tool, and number system (data gather computer) method of operation that cooperates with this table tool is the output fat of each primary instrument to be dashed count accumulative total one by one.Therefore in a single day Automatic meter reading system is delivered for use and just must moves continuously in 24 hours, guarantees to use more than ten years even decades not to break down continuously under various interference environments, any mistake do not occur, and this has just caused the requirement extremely harsh to the data harvester.In fact the device that satisfies this requirement does not exist.
The present invention will abandon the metering method of the output pulse of each primary instrument being counted one by one accumulative total, the primary instrument reading is directly changed into digital signal transmits by computer network again and adopt, thereby guarantee the reliability of teletransmission data, the chronicity in system serviceable life.
The present invention will improve the reliability of existing cities and towns dwelling house automatic data logging far management systems (hereinafter to be referred as Automatic meter reading system), the development and mass-produce graphical-display digitalized network remote transmission measuring apparatus after, to fundamentally simplify the Automatic meter reading system structure, reduce quantities, save operating cost, reduce system cost, establish technical foundation in this field, realizing industrialization.
Photoelectricity and digiverter are installed in the present invention additional on the gauge table surface, by data concentrator, relay data signal transmission is arrived management centre computer then, realize that current reading of gauge table or numerical value directly show on management centre computer, thereby reach the long-range purpose that reads gauge table reading or numerical value in instant zero error ground.
As shown in Figure 1, front end of the present invention is optical devices, is made up of hinge 1, deflecting plate 2, limiting plate 3, light-emitting diode group 4, lens combination 5, instrument display window 6 etc.Often, 2 by 3 spacing, is in illustrated solid line position.When owner or other staff need distinguish gauge table reading or numerical value, can press button and make 2 to be that upset 45 degree in axle center arrive illustrated dotted line positions with 1, can look at 6 reading straight; When the needs image data, 4 stimulated luminescences, through 2 with light refraction to 6,6 readings that show or numerical value are refracted to 5,5 through 2 again and send next stage to handle.
As shown in Figure 2, photoelectricity of the present invention and analog-digital commutator are by being the photoelectric conversion module 9 of core with CMOS, being the analog-to-digital conversion module 10, RS485 communication interface 11 of core with A/D, being that the data acquisition of core, temporary, forwarding module 12, RS485 communication interface 13 etc. are formed with PIC.When the needs image data, 5 become a real image 8 with 6 readings that show or numerical value 7 in 9 optoelectronic induction zone, and the internal circuit through 9 is with the 8 figure signal I that convert analog quantity to
0Output; 10 input I
0After, again through 10 internal circuit with I
0Convert the figure signal I of digital quantity to
1Output; By 11 I with each road output
1Be delivered to 12 by the RS485 bus; Again by 12 with data acquisition, keep in, be forwarded to host computer.
As shown in Figure 3, ultimate system of the present invention is made up of table tool (water, electricity, gas, heat etc. are once shown tool) 19, data acquisition module 14, photoelectric conversion module 15, analog-to-digital conversion module 16, data communication module 17, Figure recognition module 18, control module 20, image display module 21, data communication module 22 etc., wherein, the 14th, be attached on 19 with physics mode.In ultimate system when work,, 14 obtain basic optical figure U and it are projected 15 from 19, and the light activated element in 15, logical circuit, clock driver etc. convert thereof into mimic diagram signal U
i16 input analog voltage U
i,,, form the figure signal U of digital quantity again through the digital coding circuit of ADC through sample-hold circuit sampling broadening signal
dOutput; 17 physical platform can be the RS485 bus, can be physical networks such as other fieldbus or LAN also, transmits signals to 18 by it; 18 are based on the software of WINDOWS platform, by the figure signal U of its discriminating digit amount
dAnd be delivered to 21 and show.When system works disturb to produce when wrong because of certain, 18 can detect automatically and again the instruction of image data feeds back to 14, require it to carry out the image data program once more, until accurately.22 effect is to establish in order to satisfy remote data transmission, can data be delivered to far-end by it when needing.20 effect is for the management function that realizes that some are special, such as arrearage sanction etc.
As shown in Figure 4, complete system is made up of some gauge table 23, RS485 bus and communication interfaces 24 and 26 that have a graph data harvester, data concentrator 25, relay 27, supervisory computer 28, printer 29 etc.Wherein, 25 can concentrate the graph data of 24 gauge tables at most, and temporary immediately and forwarding; 27 can transmit 1024 25 graph datas of sending by relaying at most; 27 of the 28 management restrictions that are not subjected to quantity in theory.System has phenomenon Auto-Sensing warning functions such as circuit broken string, short circuit, misconnection; 0 power consumption often, power consumption during image data＜0.05 watt; Point-to-point communication distance≤1200M; The three-level computer network communication bit error rate＜10
-6Conform temperature-20-70 ℃.
The difference of the present invention and prior art maximum just is to have abandoned the metering method that accumulative total is counted in the present output pulse to each primary instrument one by one, adopt graphical-display digitalized network remote transmission technology fundamentally present technology to be transformed, thereby guarantee the reliability of teletransmission data.
The present invention's its advantage compared with prior art is: the first, and graphical-display digitalized network remote transmission technology is directly to realize with digitizing figure signal to the reproduction of the current reading of gauge table, its error is zero.The second, do not need gauge table is carried out any type of transformation, promptly do not need as adopting prior art, production or transformation have the special metering table tool of exporting pulse function.The 3rd, fundamentally simplied system structure reduces quantities, saves operating cost, reduces system cost.The 4th, establish technical foundation in this field, realizing industrialization
Claims (10)
1. the metrical instrument graphical-display digitalized network long-distance transmission technical scheme ultimate system comprises by table tool (water, electricity, gas, heat etc. are once shown tool) 19, data acquisition module 14, photoelectric conversion module 15, analog-to-digital conversion module 16, data communication module 17, Figure recognition module 18, control module 20, image display module 21, data communication module 22 etc., wherein, the 14th, be attached on 19 with physics mode.
2. according to claims 1 described metrical instrument graphical-display digitalized network long-distance transmission technical scheme, it is characterized in that described data acquisition module 14 is for adopting optical devices and one group of optical lens of turning 45 ° mechanical type deflecting plate.
3. according to claims 1,2 described metrical instrument graphical-display digitalized network long-distance transmission technical schemes, it is characterized in that being described photoelectric conversion module 15 for adopting P-channel enhancement type metal-oxide-semiconductor and N channel enhancement metal-oxide-semiconductor to couple together the complementary type MOS integrated circuit that constitutes according to complementary symmetric form, be called for short the CMOS integrated circuit, its photoelectric sensor directly produces electric current (or voltage) signal after opto-electronic conversion.
4. according to claims 1,2,3 described metrical instrument graphical-display digitalized network long-distance transmission technical schemes, it is characterized in that it being the successive approximation A/D converter that described analog-to-digital conversion module 16 is partly formed for sequential pulse generator, successive approximation register, A/D converter and voltage comparator etc.
5. according to claims 1,2,3,4 described metrical instrument graphical-display digitalized network long-distance transmission technical schemes, it is characterized in that it being that described data communication module 17 is for comprising the fieldbus of the RS485 communication interface that adopts balance driver and differential receiver combination.
6. according to claims 1,5 described metrical instrument graphical-display digitalized network long-distance transmission technical schemes, it is characterized in that it being that described data communication module 17 also can adopt the BLUETOOTH technology, it is short-distance wireless communication technology, at this, the BLUETOOTH standard that should meet 1.0 versions that BSIG proposed
7. according to claims 1 described metrical instrument graphical-display digitalized network long-distance transmission technical scheme, it is characterized in that it being that described Figure recognition module 18 is the software based on the WINDOWS platform.
8. according to claims 1 described metrical instrument graphical-display digitalized network long-distance transmission technical scheme, it is characterized in that it being that described control module 20 is mainly the power failure controller that adopts magnetic latching relay, the object of control is a watt-hour meter.
9. according to claims 1,7 described metrical instrument graphical-display digitalized network long-distance transmission technical schemes, it is characterized in that it being that described image display module 21 is the software based on the WINDOWS platform.
10. according to claims 1,5,7,9 described metrical instrument graphical-display digitalized network long-distance transmission technical schemes, it is characterized in that it being that the physical platform of described data communication module 22 can be the RS485 bus, also can be physical networks such as other fieldbus or LAN.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 01138768 CN1423240A (en) | 2001-12-05 | 2001-12-05 | Metrical instrument graphical-display digitalized network long-distance transmission technical scheme |
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| CN 01138768 CN1423240A (en) | 2001-12-05 | 2001-12-05 | Metrical instrument graphical-display digitalized network long-distance transmission technical scheme |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106548615A (en) * | 2016-12-08 | 2017-03-29 | 广东汇海华天科技有限公司 | A kind of collection for electricity meter-reading copies communicator |
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2001
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106548615A (en) * | 2016-12-08 | 2017-03-29 | 广东汇海华天科技有限公司 | A kind of collection for electricity meter-reading copies communicator |
| CN106548615B (en) * | 2016-12-08 | 2020-09-15 | 广东汇海华天科技有限公司 | Centralized meter reading communicator for electric power meter reading |
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