CN102829835A - Optoelectronic data collection device of mechanical pointer counter and data processing method of optoelectronic data collection device of mechanical pointer counter - Google Patents
Optoelectronic data collection device of mechanical pointer counter and data processing method of optoelectronic data collection device of mechanical pointer counter Download PDFInfo
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- CN102829835A CN102829835A CN2012103371540A CN201210337154A CN102829835A CN 102829835 A CN102829835 A CN 102829835A CN 2012103371540 A CN2012103371540 A CN 2012103371540A CN 201210337154 A CN201210337154 A CN 201210337154A CN 102829835 A CN102829835 A CN 102829835A
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Abstract
The invention provides an optoelectronic data collection device of a mechanical pointer counter. The optoelectronic data collection device comprises a pointer, a pointer shaft key, a pointer output shaft, a dial, dial circles, dial marks, a positioning screw, a positioning hole, a positioning threaded hole, a counter gear box, a pointer position photoelectric sensing device, a serial communicator and a singlechip system, wherein the pointer position photoelectric sensing device comprises a light emission plate and a light receiving plate, as well as a diaphragm plate and a fan-shaped shade sheet located between the light emission plate and the light receiving plate. The pointer position photoelectric sensing device transfers the detected position of the pointer to the singlechip system; and the singlechip system processes the detected position via a singlechip procedure to obtain reading data of the counter and sends the reading data to the outside via the serial communicator. And meanwhile, the invention further provides a data processing method of the optoelectronic data collection device of the mechanical pointer counter. According to the device and the method, the requirement on the manufacturing process is low and the reading has no dead zone. The device and the method are applied to the instruments having the counter used for instruments such as water meters and gas meters in displaying, storing and sending the data to the outside.
Description
Technical field
The present invention relates to sensor and microchip technology field, particularly a kind of mechanical pointer counter photooptical data harvester and data processing method thereof.
Background technology
The mechanical pointer counter is a kind of traditional counting assembly; Be widely used in various water meters and the gas meter, flow meter; Its stable performance, reliable operation, however because it does not possess the ability of automatic output data, make and use this counter as the industry that shows, preserves data; Check meter and can only adopt manual type, this meter reading method is time-consuming, take a lot of work, cost is high.
Summary of the invention
The present invention is in order to adapt to the needs of the robotization of checking meter; And continuation keeps some principal advantages of mechanical pointer counter; A kind of photoelectric sensing apparatus is installed between the counter gear box of traditional mechanical pointer counter and index dial; Convert pointer position to binary code through this device and send into the single-chip microcomputer processing; And the total indicator reading that obtains after the processing sends to the data acquisition system (DAS) of special use with the remote transmission mode, thereby realizes using the automatic data logging of this counter as the industry of demonstration, preservation and record data through the serial communication device.
Main solution of the present invention is achieved in that
The present invention provides a kind of mechanical pointer counter photooptical data harvester; It comprises pointer (1), pointer output shaft (10), pointer axle key (14), index dial (2), calibration circle (16), scale mark (17), pilot hole (19), positioning screw hole (18), dog screw (9), counter gear box (11), pointer position photoelectric sensing apparatus, serial communication device and SCM system; Said pointer position photoelectric sensing apparatus comprises light expelling plate (6), light receiving plate (3) and therebetween aperture plate (4) and fan-shaped anti-dazzling screen (5); Said pointer position photoelectric sensing apparatus is positioned between said index dial (2) and the said counter gear box (11); And link together through said dog screw (9) and said counter gear box (11); Have a plurality of light-emitting tubes (8) on the said smooth expelling plate (6); Have a plurality of light receiving tubes (7) on the said light receiving plate (3); Said fan-shaped anti-dazzling screen (5), said pointer (1) and said pointer output shaft (10) interlock, said pointer position photoelectric sensing apparatus is passed to said SCM system with the pointer position data that detect, and externally sends data through said serial communication device.
Preferably; At the integer-bit calibration circle (17) of said index dial (2) and the vertical lower at every scale mark (16) intersection point place the transmission-type photoconductive switching element of being made up of a said light-emitting tube (8) and a said light receiving tube (7) is installed all; These transmission-type photoconductive switching elements are that one group of axle center that is evenly distributed on integer-bit pointer output shaft (10) is on the circumference in the center of circle with 10, and organize the transmission-type optoelectronic switch ring quasi arrays of being made up of 10 transmission-type photoconductive switching elements common the composition more.
Preferably; Said fan-shaped anti-dazzling screen (5) is coaxial with said pointer (1); Be connected with said fan-shaped anti-dazzling screen keyway (15) through said pointer axle key (14), make said fan-shaped anti-dazzling screen (5) and said pointer (1) form interaction relation, said fan-shaped anti-dazzling screen (5) is coaxial with said pointer output shaft (10); Be enclosed within on the said pointer output shaft (10) through said anti-dazzling screen axis hole (20), make said fan-shaped anti-dazzling screen (5) and said pointer output shaft (10) form the hemicompact matching relationship.
Preferably, have a plurality of light holes (13) on the said aperture plate (4), said light hole (13) all is positioned on the vertical lower position at said index dial high scale circle (16) and scale mark (17) intersection point place.
Preferably, said fan-shaped anti-dazzling screen (5) is positioned between said smooth expelling plate (6) and the said aperture plate (4), and the fan-shaped anti-dazzling screen of odd bits (5) places respectively on two Different Plane with the fan-shaped anti-dazzling screen of even bit (5).
Preferably; Adopt many said dog screws (9); Pass the said pilot hole (19) on said index dial (2), said light receiving plate (3), said aperture plate (4) and the said smooth expelling plate (6), be fixed on the said positioning screw hole (18) on the said counter gear box (11).
Preferably, the central angle angle of said fan-shaped anti-dazzling screen (5) is critical between the width of circle at the critical width to 64.8 ° by circle of 43.2 °+light receiving tube+light receiving tube.
Preferably, said mechanical pointer counter photooptical data harvester can be applied on the multiple instrument with mechanical type dial counter such as water meter, gas meter, flow meter.
In addition; The present invention also provides a kind of data processing method of mechanical pointer counter photooptical data harvester; The mechanical pointer counter that mechanical pointer counter photooptical data harvester is installed with P shelves integer-bit; Represent any position in the integer-bit gear number with variable k, represent the arbitrary number in unified numbering of 10 light receiving tubes in said scale mark and the ring quasi array of said transmission-type optoelectronic switch with variable n, wherein: k=0,1,2 P-1; K=0 is a lowest order; K=P-1 is that the front and back of most significant digit, n=0,1,29, numbering are 0,1,29,0 in proper order, through said pointer position photoelectric sensing apparatus the light receiving tube in the said transmission-type optoelectronic switch ring quasi array that said fan-shaped anti-dazzling screen blocked of each integer-bit is carried out data sampling, can obtain P and the corresponding code of each integer-bit pointer position; These codes divide two types; One type for single tube by category code, be code value with the numbering variable n of the light receiving tube that is in cut-off state, single tube is made n by the category code note; Another kind of is two-tube by category code, and to be in adjacent two light receiving tubes numbering variable n of cut-off state, numbering variable n forward among the n+1 is a code value; Two-tubely make m=n+ constant 10, define code value and reading value that two array N (P-1), array S (P-1) deposit each integer-bit respectively, the following integer-bit gear number variable k that is designated as of array element by category code note; Be located at and carry out before data processing begins, the code value of each integer-bit has been accomplished the assignment to array N (P-1), it is characterized in that; Data processing is according to carrying out to high-order order from low level, and at first program converts minimum integer-bit code value to reading value, in the transfer process; If N (0)＜10 then gives S (0) with N (0) assignment, otherwise gives S (0) with N (0)-10 assignment; Then get into the main circulating program that the code value of all the other each integer-bit is converted to reading value, loop variable begins to finish to k＞P-1 from k=1, in the cyclic process; If N (k)＜10 confirms the value of S (k) with reference to the value of S (k-1), if S (k-1)＞5; Then give S (k), otherwise give S (k) N (k) assignment with N (k)-1 assignment; If N (k)>=10 then gives S (k) with N (k)-10 assignment, the reading of final mechanical pointer counter integer-bit is: S (P-1) 10
P-1+ S (P-2) 10
P-2++ S (k) 10
k+ S (1) 10
1+ S (0) 10
0, regulation: during n=9, n+1=0; N (k)=0 o'clock, N (k)-1=9.
Preferably, the data processing method of said mechanical pointer counter photooptical data harvester can be applied on the multiple instrument with mechanical type dial counter such as water meter, gas meter, flow meter.
Mechanical pointer counter photooptical data harvester of the present invention has the function of anthropomorphic dummy's eyes meter reading, and the present invention compared with prior art has the following advantages: data are promptly read promptly to send out, and can guarantee the consistance between data and the pointer indicated value; Do not need the built-in power supply of waiting for, can not stop because of the device dead electricity causes counting; When breaking down, circuit can carry out artificial meter reading.Manufacturing process requirement of the present invention is low, accuracy of reading in the use, and non-blind area can use manpower and material resources sparingly, and is suitable for to use this counter as showing, preserve and externally sending on the instrument such as water meter and gas meter, flow meter of data.
Description of drawings
Fig. 1 is the one-piece construction decomposing schematic representation of the mechanical pointer counter photooptical data harvester of the specific embodiment of the invention;
Fig. 2 is the cut-away section structural representation of the mechanical pointer counter photooptical data harvester of the specific embodiment of the invention;
Fig. 3 is the structural representation of the light expelling plate in the mechanical pointer counter photooptical data harvester of the specific embodiment of the invention;
Fig. 4 is the structural representation of the light receiving plate in the mechanical pointer counter photooptical data harvester of the specific embodiment of the invention;
Fig. 5 is the structural representation of the aperture plate in the mechanical pointer counter photooptical data harvester of the specific embodiment of the invention;
Fig. 6 is mechanical indicator and the fan-shaped anti-dazzling screen syndeton synoptic diagram in the mechanical pointer counter photooptical data harvester of the specific embodiment of the invention;
Fig. 7 is an assembly relation structural representation between index dial in the pointer position photoelectric sensing apparatus of the specific embodiment of the invention, light receiving plate, aperture plate, light expelling plate and the gearcase;
Fig. 8 is that the position concerns synoptic diagram between light hole and index dial high scale line on light-emitting tube in the pointer position photoelectric sensing apparatus of the specific embodiment of the invention, light receiving tube and the aperture plate, the calibration circle;
Fig. 9 is photoelectric sensing apparatus code generation process and the comprehensive synoptic diagram of fan-shaped anti-dazzling screen central angle angle Selection in the mechanical pointer counter photooptical data harvester of the specific embodiment of the invention;
Figure 10 is that the fan-shaped anti-dazzling screen anglec of rotation and the code relation in the mechanical pointer counter photooptical data harvester of the specific embodiment of the invention calculates and use synoptic diagram;
Figure 11 is the example schematic of in the mechanical pointer counter photooptical data harvester of the specific embodiment of the invention mechanical pointer counter with two gears being carried out data acquisition process;
Figure 12 is the flow chart of data processing figure of the mechanical pointer counter photooptical data harvester of the specific embodiment of the invention.
Embodiment
For make above-mentioned purpose of the present invention, feature and advantage can be more obviously understandable, does detailed explanation below in conjunction with the accompanying drawing specific embodiments of the invention, it will be more clear making above-mentioned and purpose, characteristic and advantage of the present invention.Reference numeral identical in whole accompanying drawings is indicated identical part.Painstakingly do not draw accompanying drawing in proportion, focus on illustrating purport of the present invention.
Only be that example combines accompanying drawing that structure, implementation method and the principle of work of mechanical pointer counter photooptical data harvester of the present invention are elaborated below with the domestic meter.
Fig. 1 is the one-piece construction synoptic diagram of the mechanical pointer counter photooptical data harvester of the specific embodiment of the invention; The mechanical pointer counter photooptical data harvester of the embodiment of the invention, it comprises pointer position photoelectric sensing apparatus, SCM system and serial communication device.The pointer position photoelectric sensing apparatus comprises light expelling plate 6, light receiving plate 3 and therebetween aperture plate 4 and fan-shaped anti-dazzling screen 5.Have a plurality of light-emitting tubes 8 on the light expelling plate 6, have a plurality of light receiving tubes 7 on the light receiving plate 3.Have a plurality of light holes 13 on the aperture plate 4, the light that the light-emitting tube 8 on the light expelling plate 6 sends can pass light hole 13 and received by the light receiving tube on the light receiving plate 37, makes light receiving tube 7 be in conducting state.Fan-shaped anti-dazzling screen 5 can stop the light from the light receiving tube 7 on the 8 directive light receiving plates 3 of the light-emitting tube on the light expelling plate 6, makes light receiving tube 7 be in cut-off state.As the fan-shaped anti-dazzling screen 5 and pointer 1 interlock of measured object, the two is coaxial with pointer output shaft 10, makes mechanical pointer counter visual reading value consistent with the electronical reading value that the photooptical data harvester collects.Has one-to-one relationship in vertical direction between scale mark 16 on the index dial 2, the light receiving tube 7 on the light receiving plate 3, the light hole 13 on the aperture plate 4 and the light-emitting tube 8 on the light expelling plate 6;, be fixed on the positioning screw hole 18 on the counter gear box 11 through the pilot hole 19 on four feature boards by dog screw 9.SCM system mainly is made up of light-emitting tube driving circuit, reception signal comparator circuit, input data control circuit and power supply etc.The circuit that the serial communication device can adopt different special chips to form according to communication distance, generally communication distance less than the 3000m situation under, adopt the chip of supporting the RS485 communications protocol such as max485 and peripheral circuit thereof to form.The pointer position photoelectric sensing apparatus is passed to SCM system with the position data of the pointer that detects, and after system handles, obtains the reading value of mechanical pointer counter, through the serial communication device reading value is externally sent.Serial data transmission device and SCM system are installed on light-receiving 3 and the light expelling plate 6, do not give embodiment in the accompanying drawings.
Fig. 2 is the cut-away section structural representation of the mechanical pointer counter photooptical data harvester of the specific embodiment of the invention; In the mechanical pointer counter photooptical data harvester of the present invention; Light receiving plate 3 and light expelling plate 6 are between index dial 2 and counter gear box; In order to reduce the interference of natural light as far as possible to light receiving tube; Following, aperture plate 4 and fan-shaped anti-dazzling screen 5 are between light expelling plate 6, light receiving plate 3 at glazing expelling plate 6 for light receiving plate 3, and aperture plate 4 is positioned at the top of fan-shaped anti-dazzling screen 5; Anti-dazzling screen bumps in rotary course for fear of the phase ortho position, and the fan-shaped anti-dazzling screen 5 of odd bits places respectively on two Different Plane with even bit anti-dazzling screen 5.
Fig. 3 and Fig. 4 are light expelling plate and the structural representations of dash receiver in the mechanical pointer counter photooptical data harvester of the specific embodiment of the invention; Fig. 8 is a position relational structure synoptic diagram between light-emitting tube in the pointer position photoelectric sensing apparatus of the specific embodiment of the invention, light receiving tube and aperture plate and the index dial high scale line; In the embodiment of the invention; All be equipped with by a light-emitting tube 8 and the transmission-type photoconductive switching element that light receiving tube 7 is formed at the integer-bit calibration circle 17 of index dial 2 and the vertical lower at every scale mark 16 intersection point places; These transmission-type photoconductive switching elements are that one group of axle center that is evenly distributed on integer-bit pointer output shaft 10 is on the circumference in the center of circle with 10; Organize the transmission-type optoelectronic switch ring quasi arrays of being made up of 10 transmission-type photoconductive switching elements common the composition more; For domestic meter; Have four integer-bit pointers on its index dial 2, therefore correspondingly, also have the ring quasi array of four groups of transmission-type optoelectronic switches on the light expelling plate 3 in the mechanical pointer counter photooptical data harvester of the embodiment of the invention He on the light receiving plate 6.
Fig. 5 is the structural representation of the aperture plate in the mechanical pointer counter photooptical data harvester of the specific embodiment of the invention; Fig. 8 is a position relational structure synoptic diagram between light-emitting tube in the pointer position photoelectric sensing apparatus of the specific embodiment of the invention, light receiving tube and aperture plate and the index dial high scale line; Have a plurality of light holes 13 on the aperture plate 4; Light hole 13 all is positioned on the vertical lower position at index dial high scale circle 16 and scale mark 17 intersection point places, plays definite light receiving tube 7 critical circle position and width of ending.
Fig. 6 is mechanical indicator and the fan-shaped anti-dazzling screen syndeton synoptic diagram in the mechanical pointer counter photooptical data harvester of the specific embodiment of the invention; An axle key 14 is arranged in the rotating shaft of pointer 1; Fan-shaped anti-dazzling screen 5 is coaxial with pointer 1; Be connected through keyway 15 in pointer axle key 14 and the fan-shaped anti-dazzling screen rotating shaft and realize interaction relation, the axle of assembling backpointer 1 is nested in the anti-dazzling screen axis hole of fan-shaped anti-dazzling screen 5, forms hard the connection between the two; Fan-shaped anti-dazzling screen 5 is coaxial with pointer output shaft 10, is enclosed within through the axis hole in the rotating shaft of fan-shaped anti-dazzling screen 5 20 and realizes the hemicompact matching relationship on the said pointer output shaft 10.
Fig. 7 is an assembly relation structural representation between index dial in the pointer position photoelectric sensing apparatus of the specific embodiment of the invention, light receiving plate, aperture plate, light expelling plate and the gearcase; In order to prevent to be subjected to displacement between optoelectronic position sensing device and the counter gear box 11; Influence the conversion accuracy of optoelectronic position sensing device to the pointer position data; As shown in Figure 7; The specific embodiment of the invention adopts many dog screws 9, passes the pilot hole 19 on index dial 2, light receiving plate 3, aperture plate 4 and the light expelling plate 6, makes light receiving plate 3, aperture plate 4 and light expelling plate 6 threes be connected as a single entity and is fixed on the positioning screw hole 18 on the counter gear box 11.
All smaller or equal to 3 millimeters circular encapsulation or minitype paster encapsulation, the single-chip microcomputer model is C8051F330 for light-emitting tube and light receiving tube diameter in the mechanical pointer counter photooptical data harvester of the specific embodiment of the invention, and the serial communication device is MAX485.
Mechanical pointer counter photooptical data harvester of the present invention and data processing method thereof can be applied on the multiple instrument with mechanical type dial counter such as water meter, gas meter, flow meter.
Below in conjunction with Fig. 9 to Figure 12 the concrete course of work of mechanical pointer counter photooptical data harvester of the present invention is done and to be further described.
Experience is told us, during artificial meter reading, when observing pointer and obviously be between two scale marks; Then the value of the scale mark crossed of fetch pointer CW is as its reading; When observing that pointer is in or as if being on the scale mark, then confirm its reading, if the pointer position of adjacent low level is in the counterclockwise side of " 0 " scale mark through pointer position with reference to adjacent low level; Represent a high position not accomplish carry, the value that high-order reading is got the present scale mark of its pointer deducts 1 then; If on behalf of a high position, the pointer position of adjacent low level accomplished carry on " 0 " scale mark or in the clockwise side of " 0 " scale mark, the value that high-order reading is got its pointer scale mark pointed.The process of so-called artificial meter reading is exactly the process that people observe and handle the relativeness between pointer position and the scale mark in sum; The key of this process is pointer to be between two scale marks refer to this pointer position of two types on scale mark with pointer; Give different processing respectively; Particularly depend on finger on scale mark during such pointer position when certain bit pointer, by concerning to solve the carry problem of this bit pointer with reference to adjacent low level pointer position and position between " 0 " scale mark.
These characteristics according to artificial meter reading; In order to realize the artificial meter reading of single-chip simulation; Pointer position photoelectric sensing apparatus as the core of the specific embodiment of the invention; Through the break-make effect that its fan-shaped anti-dazzling screen cutting transmission-type optoelectronic switch annular array light path produces, the light receiving tube that is centered around in the axial transmission-type optoelectronic switch of the integer-bit pointer annular array is carried out data sampling, at the output terminal of light receiving tube; Produce and the corresponding binary code of pointer position; Be connected to input of single chip through the output terminal with light receiving tube and read in data in binary code, make that handling the process that concerns between pointer position and the scale value converts the process that concerns between processing light receiving tube output code and the reading value to, processing procedure is accomplished by the single-chip microcomputer internal processes.
Fig. 9 has provided the pointer position photoelectric sensing apparatus code generation process synoptic diagram in the mechanical pointer counter photooptical data harvester of the specific embodiment of the invention, and among the figure: the other great circle of scale mark represent the light receiving tube in the ring quasi array of transmission-type optoelectronic switch, and on behalf of critical the ending of light receiving tube, the roundlet in the great circle justify; Receiving tube ends fully when fan-shaped anti-dazzling screen covers roundlet fully, and roundlet is solid shape and representes that light receiving tube is in cut-off state, and roundlet is hollow shape and representes that light receiving tube is in conducting state; α is that the critical angle between two tangent lines that circle and pointer axle center O point form of light receiving tube is the critical width by circle of light receiving tube, and arabic numeral are that the unification of scale value and light receiving tube is numbered, and representes these in numbering any one with variable n; Wherein: n=0,19, the front and back of numbering are 0 in proper order; 19,0, scallop is divided into fan-shaped anti-dazzling screen; OP is the angular bisector of fan-shaped anti-dazzling screen, and OA is for supposing under the fixed situation of fan-shaped anti-dazzling screen the inswept fan-shaped anti-dazzling screen straight flange of elder generation when angular bisector OP is in a good mood the hour hands rotation around needle pivot; OB is the inswept fan-shaped anti-dazzling screen straight flange in back, and its two straight flange OA and OB are β with the central angle that O point forms, and line that 2 of D, E and O are ordered and light receiving tube be critical, and to end circle tangent; Angle between left figure straight line OD and the straight line OE is 72 °+α; Angle between right figure straight line OD and the straight line OE is 36 °+α, and drops partly is a pointer, and dot-hatched partly is the single tube cut-off region; Its width is γ; Body of wall shape dash area is two-tube cut-off region, and its width is δ=36 °-γ, and the numeral beyond the maximum cylindrical be the regional code of each code.Because the tip of pointer overlaps with the angular bisector of fan-shaped anti-dazzling screen, the angular bisector present position of pointer present position and fan-shaped shading in the following explanation is of equal value, allly in the full text in addition relates to width and all is unit with the angle apart from these two terms.
From the right figure of Fig. 9, can find out: fan-shaped anti-dazzling screen rotates a circle as the CW of testee by arrow indication among the figure; Cutting is the light path between light-emitting tube and the light receiving tube in the transmission-type optoelectronic switch ring quasi array at center with the mechanical indicator axle center; Follow in the ring quasi array of transmission-type optoelectronic switch the light receiving tube alternate conduction and end, the circumference that anti-dazzling screen is inswept is divided into the zone of 20 different codes, selects the angle of suitable fan-shaped anti-dazzling screen central angle; Just can make the code in these code zones occur following two types: 1. single tube is by category code; Be characterized in this zone, fan-shaped anti-dazzling screen angular bisector be positioned at any scale mark be about axis of symmetry ± γ/2 angular ranges within, this zone covers a scale mark and a light receiving tube; Make this light receiving tube be in cut-off state; All the other light receiving tubes need conducting state, are code value with the numbering variable n of the light receiving tube that is in cut-off state, and single tube is represented with variable n by category code; 2. two-tube by category code; Be characterized in this zone, fan-shaped anti-dazzling screen angular bisector is positioned at angular bisector with any two scale marks and is about axis of symmetry ± δ/2 angular ranges within, this zone covers two scale marks and two adjacent light receiving tubes; Make these two adjacent light receiving tubes be in cut-off state; All the other light receiving tubes are in conducting state, and to be in adjacent two light receiving tube n of cut-off state, the forward numbering variable n of n+1 sequence number is a code value; The two-tube category code that ends is represented m=n+ constant 10 with variable m.Carry out analogy with artificial meter reading, single tube is corresponding by type situation about being on the scale mark with visual pointer, and two-tube to be in two situation between the scale mark by class and visual pointer corresponding.After pointer position converts digital code into; Pointer is on the one hand and still is on the scale mark between the two adjacent scale marks or makes when judging at needs; Can whether＞10 to make corresponding judgement through code; If particularly code＜10 expression pointers are on the scale mark, otherwise the expression pointer is between the two adjacent scale marks, pointer is in the counterclockwise side of " 0 " scale mark at needs on the other hand and still is on " 0 " scale mark or is in the clockwise side of " 0 " scale mark and make when judging; Can make corresponding judgement through the value of code; If particularly code n＞5 or m-10＞5 represent that pointer is in the counterclockwise side of " 0 " scale mark, otherwise the expression pointer is on " 0 " scale mark or is in the clockwise side of " 0 " scale mark.
It is much comparatively suitable to select as for the central angle of fan-shaped anti-dazzling screen actually, and Fig. 9 has also provided fan-shaped anti-dazzling screen central angle angle and how to have selected synoptic diagram, and the condition of fan-shaped anti-dazzling screen central angle angle Selection is; Fan-shaped at any time anti-dazzling screen can only make in the ring quasi array of transmission-type optoelectronic switch one or adjacent two light-emitting tubes be in cut-off state; As can be seen from the figure, at first because in the ring quasi array of transmission-type optoelectronic switch, distance is 36 ° between the adjacent light receiving tube; Therefore to guarantee that fan-shaped anti-dazzling screen covers the critical by circle of two light receiving tubes simultaneously; It is β >=36 °+α that central angle must satisfy condition, and shown in left figure, the straight flange OA of fan-shaped anti-dazzling screen and OB overlap with straight line OE and OD respectively; β=closed interval (36 °+α), this is the optional minimum value of β; Secondly because in the ring quasi array of transmission-type optoelectronic switch; At interval distance is 72 ° between two light receiving tubes of a light receiving tube, therefore will avoid fan-shaped anti-dazzling screen to cover the critical by circle of three light receiving tubes simultaneously, and it is β＜72 °+α that central angle must satisfy condition; Shown in right figure; The straight flange OA of fan-shaped anti-dazzling screen and OB overlap with straight line OE and OD respectively, β=open interval (72 °+α), this is the optional maximal value of β.In a sum of errors pointer position photoelectric sensing apparatus that has gear return difference, a fan-shaped anti-dazzling screen installation site in the system of photoelectric tube optical property difference; But fan-shaped anti-dazzling screen angle should be avoided minimum and maximum value as far as possible; Be advisable to get intermediate value, optional minimum value+(maximal value-optional minimum value of fan-shaped anti-dazzling screen width that fan-shaped anti-dazzling screen width the is optional)/2=of preferably fan-shaped anti-dazzling screen angle beta=fan-shaped anti-dazzling screen width (36 °+α)+((72 °+α)-(36 °+α))/2=54 °+α.
From left figure, it can also be seen that the central angle β of fan-shaped anti-dazzling screen, critical following relational expression: the γ+β=72 °+α that between circle width α and single tube cut-off region width gamma three, exists, therefrom solve single tube cut-off region width: γ=72 °-β+α, along with the variation of β between minimum value and maximal value; The width of γ is in the open interval (0; 72) change in the degree scope, be preferably at β under the situation of 54 °+α, γ=(72 °+α)-β=(72 °+α)-(54 °+α)=72 °-54 °=18 °; In the aforementioned calculation process; Because α is automatically cancellation in computation process,, need only selection β=54 °+α so γ and α are irrelevant; Single tube cut-off region width equates that with two-tube cut-off region width this also is that preferred β is the inevitable conclusion that intermediate value draws.
Below be example with the mechanical pointer counter of one two gear, how the present invention is accomplished the method for meter reading and further analyzes.
Figure 11 is the example schematic of in the mechanical pointer counter photooptical data harvester of the specific embodiment of the invention mechanical pointer counter with two gears being carried out data acquisition process; For the ease of saying something in this imitation clock and watch structure; Two grades transmission-type optoelectronic switch matrix, pointer, anti-dazzling screen and calibration circle be totally one center of circle, and among the figure: the outer ring roundlet is the critical by circle of high-order light receiving tube, and the inner ring roundlet is the critical by circle of low level light receiving tube; Fan-shaped part that area is bigger and internal pointer thereof are represented high-order fan-shaped anti-dazzling screen and high bit pointer; Fan-shaped part that area is less and internal pointer thereof are represented fan-shaped anti-dazzling screen of low level and low bit pointer, appropriately select the light hole aperture on the anti-dazzling screen, make α=6 °; According to optimum condition β=54 of fan-shaped anti-dazzling screen angle °+α; β=60 ° are arranged, single tube cut-off region width gamma=± 9 °, the absolute width of γ is 18 °.
In order to be illustrated more clearly in the principle of work of optoelectronic position sensing device optoelectronic position sensing device processing carry problem in the embodiment of the invention; Be incorporated herein the computing formula that concerns between the transmission-type optoelectronic switch ring quasi array output code in the pointer anglec of rotation and the optoelectronic position sensing device; Figure 10 is the fan-shaped anti-dazzling screen anglec of rotation and the code relation synoptic diagram in the mechanical pointer counter photooptical data harvester of the specific embodiment of the invention; Among the figure: x be OP to the anglec of rotation of " 0 " scale mark (this angle get clockwise on the occasion of; Get negative value counterclockwise), in fan-shaped anti-dazzling screen two straight flanges: OA is x+ β/2 to the anglec of rotation between " 0 " scale mark; OB is x-β/2 to the anglec of rotation between " 0 " scale mark.Respectively (x+ β/2) and (x-β/2) merchant divided by 36 is rounded, result's note is made n
AAnd n
B, to confirm code zone, OA and OB place, to (x+ β/2) mould 36 complementations, result's note is made y
A, confirming the distance between the nearest scale mark that OA and fan-shaped anti-dazzling screen covered, with 36 mould 36 complementations that deduct (x-β/2), the result remembers and makes y
B, to confirm the distance between the nearest scale mark that OB and fan-shaped anti-dazzling screen covered.Obtain following pointer position and code relation computing formula after the arrangement:
n
A＝〈(x＋β/2)/36>1
n
B＝〈(x－β/2)/36>＋1?2
y
A＝(x＋β/2)mod?363
y
B＝36－?(x－β/2)mod?36 4
If y
A>=α/2, then n
AEnd, if y
B>=α/2, then n
BEnd.
If n
A≠ n
B, then to be in code be n to pointer
B+ 10 two-tube cut-off region; If n
A=n
B, then to be in code be n to pointer
A/ n
BSingle tube cut-off region (back slash "/" expression is multinomial selects, down with).
In the formula: angle brackets <>expression merchant rounding operation.Operation result is the number greater than 360 among the Yuan Kuo ﹙ ﹚, then deduct continuously 360 up to the result for less than 360 positive number or 0; For negative then add continuously 360 up to the result for positive number or 0.
For example x=145 ° has:
n
A＝〈(x＋β/2)/36>＝〈(145+30)/36>＝4;
n
A＝〈(x－β/2)/36>＋1＝〈(145-30)/36>+1＝4;
y
A＝(x＋β/2)mod?36＝(145+30)?mod?36＝31;
y
B＝36－?(x－β/2)mod?36＝36－(145－30)mod?36＝29;
Because y
A, y
B>=3, so n
A, n
BEnd, because n
A=n
B=4, so No. 4 light receiving tubes end, it is 4 single tube cut-off region that pointer is in code.
For example x=157 ° has:
n
A＝〈(x＋β/2)/36>＝〈(157+30)/36>＝5;
n
B＝〈(x－β/2)/36>＋1＝〈(157-30)/36>+1＝4;
y
A＝(x＋β/2)mod?36＝(157+30)?mod?36＝7;
y
B＝36－?(x－β/2)mod?36＝36－(157－30)mod?36＝17;
Because y
A, y
B>=3, so n
A, n
BEnd, because n
A=5, n
B=4, so No. 4 and No. 5 light receiving tubes end, it is 14 two-tube cut-off region that pointer is in code.
Below respectively high-order transmission-type optoelectronic switch ring quasi array output single tube in this example is explained by code word and two-tube data processing method during by category code.
One. high-order transmission-type optoelectronic switch ring quasi array output single tube ends category code:
Two figure are respectively high bit pointer bit pointer distribution plans just when to be in code be single tube cut-off region the right and left circle point of 0 about Figure 11 (a); The high bit pointer of left figure be in code be 19 with code be on the point of interface of 0 code zone; The high bit pointer of right figure be in code be 0 with code be on the point of interface of 10 code zone; The high bit pointer of two figure is respectively apart from " 0 " scale mark-9 ° and 9 ° of ﹢; According to the decimal system between adjacent pointer relation, the low bit pointer of two figure is distance " 0 " scale mark-90 ° and 90 ° of ﹢ respectively.To hang down bit pointer anglec of rotation x=-90 and x=90 and β=60, α=6 substitution formula 1-4; Can calculate the low level code and be respectively 17 and 12 (computation process is omitted); Between 17 and 12 CWs of code zone; Whole codes that low level possibly occur are 17/8/18/9/19/0/10/1/11/2/12, and these codes are to judge whether an adjacent high position parameter of carry takes place.The code combination that this moment, high low level possibly occur is { 0 } { 17/8/18/9/19/0/10/1/11
/ 2/12 }, because low level does not have adjacent low level, low bit readings replaces units numerical value in the sign indicating number, and its reading is 7/8/9/0/1/2.Because high-order code is single tube type of ending, there is the carry problem to need to handle, according to the reasoning process of artificial meter reading, above-mentioned code combination is divided into { 0 } { 17/8/18/9/19 } and { 0 } { 0/10/1/11
/ 2/12 } two groups, the value of units all＞5 representes that high bit pointer is in the counterclockwise side of " 0 " scale mark in last group of low level code, and a high position is not accomplished carry, high place reading replace sign indicating number 0 deduct 1 (subtraction with borrow, 0-1=9), two place readings are 97/98/99; The value of units all ≯ 5 is represented high bit pointer or is on " 0 " scale mark or is in the clockwise side of " 0 " scale mark in the one group of low level code in back, and a high position has been accomplished carry, and it is 00/01/02 that high place reading directly replaces sign indicating number 0, two place reading.Two group number-readings are 97/98/99/00/01/02 altogether; Replace high-order code 0 in the above-mentioned code combination with any single tube cut-off region code n; The code combination that obtains is { n } { 17/8/18/9/19/0/10/1/11/2 }, and two reading is ((n-1) * 10+7/8/9)/(n * 10+0/1/2).
Two. high-order transmission-type optoelectronic switch ring quasi array output is two-tube by category code:
Figure 11 (b) is high bit pointer height bit pointer distribution plan when to be in code be two-tube cut-off region the right and left circle point of 19; The high bit pointer of left figure be in code be 9 with code be on the point of interface of 19 code zone; The high bit pointer of right figure be in code be 19 with code be on the point of interface of 0 code zone; Two figure high bit pointer respectively the distance " 0 " scale mark-27 with-9 °; Advance relation according to ten between the adjacent pointer, the low bit pointer of two figure respectively distance " 0 " scale mark-270 ° with-90 °, will hang down bit pointer anglec of rotation x=-270, x=-90, β=60 and α=6 substitution formula 1-4; Can calculate the low level code and be respectively 17 and 12 (computation process is omitted), code 12 and/17 CWs between the low level code that possibly occur be 12/3/13/4/14
/ 5/15/6/16/7/17, high low level code combination is { 19 } { 12/3/13/4/14/5/15/6/16/7/17 }, and last one saves in like manner that low bit readings is 2/3/4/5/6/7.Because high bit pointer is in two-tube cut-off region, the no-carry problem will be handled, and according to the reasoning process of artificial meter reading, high-order reading replaces units 9 in the sign indicating number, so two place readings are 92/93/94/95/96/97.With high-order code 19 in any two-tube cut-off region code m=n+10 displacement code combination.Can obtain two place readings is n * 10+2/3/4/5/6/7.
According to analyzing, be that n, code are that m=n+10 and code are in three continuous code regional extents of n+1 the time when high bit pointer is in code, the code combination of high low level is { n } { 17/8/18/9/19/0/10/1
/11/2/12｝/｛m｝｛12/3/14/14/5/15/6/16/7/17｝/｛n+1｝｛17/8/18/9/19/0/10
/ 1/11/2/12 }; Two place readings that obtain after the processing are 16 numerical value such as ((n-1) * 10+7/8/9)/((n) * 10+0/1/2/3/4/5/6/7)/((n-1) * 10+7/8/9/0/1/2); These numbers increase progressively one by one; Head and the tail differ 16, the mechanical pointer counter photooptical data harvester of the visible specific embodiment of the invention, to the mechanical pointer counter of one two gear can carry out continuously, accurate and non-blind area ground data read automatically.
As for the mechanical pointer counter of more gears, can the code of adjacent gear be combined in twos, according to the sequential processes from the low level to a high position,, finally obtain the reading of each gear with progressively reasoning of said method.
Figure 12 is the flow chart of data processing figure of the mechanical pointer counter photooptical data harvester of the specific embodiment of the invention; Single-chip data prescribing method in the following mechanical pointer counter photooptical data harvester of the present invention of summarizing according to above-mentioned explanation is described further program circuit in conjunction with Figure 12.
Mechanical pointer counter with P shelves integer-bit; Represent any position in the integer-bit gear number with variable k; Represent the arbitrary number in the unified numbering of 10 light receiving tubes in said scale mark and the ring quasi array of said transmission-type optoelectronic switch with variable n; Wherein: wherein: k=0,1,2 P-1, k=0 are lowest order, and k=P-1 is that the front and back of most significant digit, n=0,1,29, numbering are 0,1,29,0 in proper order.Through the pointer position photoelectric sensing apparatus each integer-bit pointer position being sampled obtains P code, is code value with the numbering variable n of the light receiving tube that is in cut-off state, and single tube is represented with variable n by category code; To be in adjacent two light receiving tubes numbering variable n of cut-off state, numbering variable n forward among the n+1 is a code value, and the two-tube category code that ends is represented with variable m; M=n+ constant 10 defines code value and reading value that two array N (P-1), array S (P-1) deposit each integer-bit respectively, the following integer-bit gear number variable k that is designated as of array element; Through a data loop program, through pointer optoelectronic position sensing device pointer position is sampled earlier, loop variable is k; Circulation begins to finish to k=P-1 from k=0, and in the cyclic process, each integer-bit pointer position converts code n to or the m assignment is given array element N (k); Next get into data processor, data processing according to from the low level to a high position promptly the order from k=0 to P-1 carry out, at first convert the lowest order code value to reading value; In the transfer process, if N (0)＜10 then gives S (0) with N (0) assignment; Otherwise give S (0) with N (0)-10 assignment, then program gets into the main circulating program that the code value that all the other are every converts reading value to, and circulation begins to finish to k＞P-1 from k=1; In the cyclic process, if N (k)＜10 representes that the k bit pointer is in the single tube cut-off region; There is the carry problem to need to handle, confirms the value of S (k) with reference to the value of S (k-1), if S (k-1)＞5; Represent that the k-1 bit pointer is in the counterclockwise side of " 0 " scale mark; Give S (k) with N (k)-1 assignment, otherwise the explanation pointer is on " 0 " scale mark or is in the clockwise side of " 0 " scale mark, give S (k) N (k) assignment; If N (k)>=10, the expression pointer is in two-tube cut-off region, and the no-carry problem is given S (k) with N (k)-10 assignment, and the reading of final mechanical pointer counter integer-bit is: S (P-1) 10
P-1+ S (P-2) 10
P-2++ S (k) 10
k+ S (1) 10
1+ S (0) 10
0Can use the direct coding of C language according to above process flow diagram.
In above description, a lot of details have been set forth so that make much of the present invention; But above description only is preferred embodiment of the present invention; The present invention can implement much to be different from alternate manner described here, so the present invention does not receive the restriction of top disclosed practical implementation.Any skilled personnel are not breaking away under the technical scheme scope situation of the present invention simultaneously; All the method for above-mentioned announcement capable of using and technology contents are made many possible changes and modification to technical scheme of the present invention, or are revised as the equivalent embodiment of equivalent variations.Every content that does not break away from technical scheme of the present invention to any simple modification, equivalent variations and modification that above embodiment did, all still belongs to technology of the present invention according to technical spirit of the present invention.
Claims (10)
1. mechanical pointer counter photooptical data harvester; It is characterized in that; It comprises pointer (1), pointer output shaft (10), pointer axle key (14), index dial (2), calibration circle (16), scale mark (17), pilot hole (19), positioning screw hole (18), dog screw (9), counter gear box (11), pointer position photoelectric sensing apparatus, serial communication device and SCM system; Said pointer position photoelectric sensing apparatus comprises light expelling plate (6), light receiving plate (3) and therebetween aperture plate (4) and fan-shaped anti-dazzling screen (5); Said pointer position photoelectric sensing apparatus is positioned between said index dial (2) and the said counter gear box (11); And link together through said dog screw (9) and said counter gear box (11); Have a plurality of light-emitting tubes (8) on the said smooth expelling plate (6), have a plurality of light receiving tubes (7) on the said light receiving plate (3), said fan-shaped anti-dazzling screen (5), said pointer (1) and said pointer output shaft (10) interlock; Said pointer position photoelectric sensing apparatus is passed to said SCM system with the pointer position data that detect, and externally sends data through said serial communication device.
2. mechanical pointer counter photooptical data harvester according to claim 1; It is characterized in that; At the integer-bit calibration circle (17) of said index dial (2) and the vertical lower at every scale mark (16) intersection point place the transmission-type photoconductive switching element of being made up of a said light-emitting tube (8) and a said light receiving tube (7) is installed all; These transmission-type photoconductive switching elements are that one group of axle center that is evenly distributed on integer-bit pointer output shaft (10) is on the circumference in the center of circle with 10, and organize the transmission-type optoelectronic switch ring quasi arrays of being made up of 10 transmission-type photoconductive switching elements common the composition more.
3. mechanical pointer counter photooptical data harvester according to claim 1; It is characterized in that; Said fan-shaped anti-dazzling screen (5) is coaxial with said pointer (1); Be connected with said fan-shaped anti-dazzling screen keyway (15) through said pointer axle key (14), make said fan-shaped anti-dazzling screen (5) and said pointer (1) form interaction relation, said fan-shaped anti-dazzling screen (5) is coaxial with said pointer output shaft (10); Be enclosed within on the said pointer output shaft (10) through said anti-dazzling screen axis hole (20), make said fan-shaped anti-dazzling screen (5) and said pointer output shaft (10) form the hemicompact matching relationship.
4. mechanical pointer counter photooptical data harvester according to claim 1; It is characterized in that; Have a plurality of light holes (13) on the said aperture plate (4), said light hole (13) all is positioned on the vertical lower position at said index dial high scale circle (16) and scale mark (17) intersection point place.
5. mechanical pointer counter photooptical data harvester according to claim 1; It is characterized in that; Said fan-shaped anti-dazzling screen (5) is positioned between said smooth expelling plate (6) and the said aperture plate (4), and the fan-shaped anti-dazzling screen of odd bits (5) places respectively on two Different Plane with the fan-shaped anti-dazzling screen of even bit (5).
6. mechanical pointer counter photooptical data harvester according to claim 1; It is characterized in that; Adopt many said dog screws (9); Pass the said pilot hole (19) on said index dial (2), said light receiving plate (3), said aperture plate (4) and the said smooth expelling plate (6), be fixed on the said positioning screw hole (18) on the said counter gear box (11).
7. mechanical pointer counter photooptical data harvester according to claim 1; It is characterized in that the central angle angle of said fan-shaped anti-dazzling screen (5) is critical between the width of circle at the critical width to 64.8 ° by circle of 43.2 °+light receiving tube+light receiving tube.
8. mechanical pointer counter photooptical data harvester according to claim 1; It is characterized in that said mechanical pointer counter photooptical data harvester can be applied on the multiple instrument with mechanical type dial counter such as water meter, gas meter, flow meter.
9. the data processing method of a mechanical pointer counter photooptical data harvester; It is characterized in that; The mechanical pointer counter that mechanical pointer counter photooptical data harvester is installed with P shelves integer-bit; Represent any position in the integer-bit gear number with variable k, represent the arbitrary number in unified numbering of 10 light receiving tubes in said scale mark and the ring quasi array of said transmission-type optoelectronic switch with variable n, wherein: k=0,1,2 P-1; K=0 is a lowest order; K=P-1 is that the front and back of most significant digit, n=0,1,29, numbering are 0,1,29,0 in proper order, through said pointer position photoelectric sensing apparatus the light receiving tube in the said transmission-type optoelectronic switch ring quasi array that said fan-shaped anti-dazzling screen blocked of each integer-bit is carried out data sampling, can obtain P and the corresponding code of each integer-bit pointer position; These codes divide two types; One type for single tube by category code, be code value with the numbering variable n of the light receiving tube that is in cut-off state, single tube is made n by the category code note; Another kind of is two-tube by category code, and to be in adjacent two light receiving tubes numbering variable n of cut-off state, numbering variable n forward among the n+1 is a code value; Two-tubely make m=n+ constant 10, define code value and reading value that two array N (P-1), array S (P-1) deposit each integer-bit respectively, the following integer-bit gear number variable k that is designated as of array element by category code note; Be located at and carry out before data processing begins, the code value of each integer-bit has been accomplished the assignment to array N (P-1), it is characterized in that; Data processing is according to carrying out to high-order order from low level, and at first program converts minimum integer-bit code value to reading value, in the transfer process; If N (0)＜10 then gives S (0) with N (0) assignment, otherwise gives S (0) with N (0)-10 assignment; Then get into the main circulating program that the code value of all the other each integer-bit is converted to reading value, loop variable begins to finish to k＞P-1 from k=1, in the cyclic process; If N (k)＜10 confirms the value of S (k) with reference to the value of S (k-1), if S (k-1)＞5; Then give S (k), otherwise give S (k) N (k) assignment with N (k)-1 assignment; If N (k)>=10 then gives S (k) with N (k)-10 assignment, the reading of final mechanical pointer counter integer-bit is: S (P-1) 10
P-1+ S (P-2) 10
P-2++ S (k) 10
k+ S (1) 10
1+ S (0) 10
0, regulation: during n=9, n+1=0; N (k)=0 o'clock, N (k)-1=9.
10. the data processing method of mechanical pointer counter photooptical data harvester according to claim 9; It is characterized in that the data processing method of said mechanical pointer counter photooptical data harvester can be applied on the multiple instrument with mechanical type dial counter such as water meter, gas meter, flow meter.
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| WO2019085210A1 (en) * | 2017-11-03 | 2019-05-09 | 深圳市创新先进科技有限公司 | Cooking vessel control device for stir fry machine and stir fry machine |
| CN110429934A (en) * | 2019-08-02 | 2019-11-08 | 西安星舟天启智能装备有限责任公司 | A kind of jamproof adaptometer counting method |
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| CN106568483A (en) * | 2016-11-14 | 2017-04-19 | 扬州奥泰光电生物技术有限公司 | Turbine optical sensor and turbine optical flowmeter based on sensor |
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| CN113884154B (en) * | 2020-07-03 | 2023-10-31 | 成都秦川物联网科技股份有限公司 | MCU-based double-path photoelectric sampling method for intelligent gas meter of Internet of things |
| CN112212949A (en) * | 2020-09-21 | 2021-01-12 | 广州能源检测研究院 | Mechanical water meter calibration method and device based on laser sensor |
| CN112212949B (en) * | 2020-09-21 | 2023-11-10 | 广州能源检测研究院 | Mechanical water meter verification method and device based on laser sensor |
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