Circulating type cable sign reading device and method
Technical field
The present invention relates to machine-readable technology, be specifically related to the cable sign and read technology, more particularly, relate to a kind of single-sensor that uses cable is carried out identifying reading device and method around the circulating type cable of sensing identification.
Background technology
Scanner is as a kind of machine-readable equipment, read and entry information with scan mode by optical means, the commercial product of existing multiple maturation, for example flat or paper feed type literal, chart scanner also have at the widely used apparatus for reading of bar code of supermarket and library.But under some special occasions, people also need to have the scanning device of unique construction, for example, in narrow space, the cable of intensive laying and the inquiry of reading and undertaken Relational database of the identification information on the optical cable by the cable identification information.Wherein, the form of institute's identification information can be color, color lump, bar code, two-dimensional bar, optical identification character etc., and the content of identification information can be coding, title of model specification, the cable signal of cable etc.
When checking cable when for example in the aircraft manufacturing process, laying cable or in aircraft maintenance and maintenance, often need the operator to read accurately and rapidly and discern the identification code (literal or bar code information) that is printed on the cable, obtain the corresponding details relevant by retrieval again with this cable.Because it is undesirable to be identified narrow space, the illumination at cable place, identification code is read difficulty; When cable dimensions hour, identification code is also very little, reads just more difficult.And position and the direction of identification code on each cable has randomness, if can not take circuit apart, not cut off cable or automatic identification cable, fast decoding and retrieve relevant information under the prerequisite of distortion by force not, increase work efficiency greatly, reduce False Rate, will help to reduce the cost of labor of making and safeguarding.
In order to realize the robotization identification of cable identification information, the cable identification code can be weaved into bar code, adopt the bar code reading device in OCR (optical character identification) barcode technology again, scanning obtains this bar code information.Existing bar code reading device comprises fixed CCD bar-code reading device and fixed laser bar code reading device.The defective that fixed CCD bar-code reading device and fixed laser bar code reading device use in the cable sign is obtained has: one, for utilizing fixed CCD bar-code reading device to carry out accurately reading of cable mark identification (bar code information), bar code must be placed the front position of its scanning window scan.Read for the cable bar code, cable is too thin, the useful area that projects to existing bar-code reading device readable range is too little, so existing bar-code reading device is difficult to aim at and is read target and then effectively reads barcode signal, be the projection width and the actual spreading width synoptic diagram of bar code on the cable as shown in Figure 1, d is the projection width that is printed on the bar code on the cable, this is the width of formula bar-code reading device perception of being fixed, D is the actual spreading width of bar code on the cable among the figure, and visible d is less than D.Simultaneously, if bar code is imprinted on the another side of cable over against the bar-code reading device one side, for the cable cable of the gathering bunchy in using, owing to cable can not be twisted 180 °, fixed like this bar-code reading device just can not read correct barcode signal; Its two, existing bar-code reading device requires to be read bar code and is on the straight face, is that bar code is because of the synoptic diagram of bending distortion on the cable as shown in Figure 2, the actual pitch between the spacing of bar code shown in the figure is d
0, because of becoming d after the cable bending
1, the projection spacing of obtaining because of the crooked formula bar-code reading device that is fixed is d
1, obvious d
1Be less than d
0, the bar code information that projects on the plane that then bar-code reading device is read is not actual bar code information, causes read error, causes decoding error or decoding failure.The characteristics of fixed CCD bar-code reading device are the spherical lenses that will adopt image-forming range long, are fixed bar-code reading device image-forming range synoptic diagram as shown in Figure 3, and volume is bigger, and L is meant the imaging system distance among the figure.And the fixed laser bar-code reading device is because the characteristic of himself structure, must polishing and reception in a suitable angular range, could successfully read the sign indicating number decoding.Be the fixed bar-code reading device structural representation of giving out light as shown in Figure 4,801 are meant laser diode among the figure, the 803rd, and polygonal mirror, the 804th, motor, the 805th, photodiode, the 808th, detected cable, the 802nd, knob.Be the fixed laser bar code reading device angle synoptic diagram of polishing and reception in the plane as shown in Figure 5, the 806th, the direct reflection chief ray, the 807th, the diffuse reflection chief ray has only when becoming 10~15 ° between laser beam and the vertical light, and the fixed bar-code reading device of giving out light could receive.Because cable is circular, in the direct reflection of face of cylinder glazed thread and diffusion and plane a great difference is arranged, be the angle synoptic diagram of fixed laser bar code reading device polishing and reception on the face of cylinder as shown in Figure 6, the 806th, the direct reflection chief ray, as seen to find a suitable angle polishing and receive very difficultly, increase the difficulty of accurate identification.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of circulating type cable sign reading device and method that can overcome the above-mentioned shortcoming of prior art, can carry out online cable identification automatically easily, stretch into less space, Biao Zhi not carry out accurate fast identification to the surface on the thinner cable that is in user mode mark, solve read barcode position uncertain, guarantee axially to stretch and volume reaches and accurately reads the other problem of generation.
The above-mentioned technical matters of the present invention solves like this, construct a kind of circulating type cable sign reading device, comprise the main part 1 that is equipped with the control circuit board of Wireless/wired computer interface, also comprise by connecting the lower carriage 11 that support plate is connected with main part 1, but the upper bracket 10 that is connected with described lower carriage 11 foldings by hinge 9, described upper bracket 10, lower carriage 11 both sides are respectively equipped with closes when closing up and the collet chuck 5 of axial elongation, at described upper bracket 10, lower carriage 11 is cylinder when closing up inboard is provided with ring-shaped guide rail 24 and is axially arranged with equally distributed rib-loop groove 19, comprises that also sensor module 3 makes the first module that described sensor module 3 moves radially and makes described sensor module 3 along Unit second that described ring-shaped guide rail 24 and described rib-loop groove 19 go in ring.
In according to circulating type cable sign reading device provided by the invention, also comprise the control circuit board that is contained in the described main part 1, be arranged on described main part 1 shell and the display screen and the control knob that are connected with described control circuit board.
In according to circulating type cable sign reading device provided by the invention, described first module comprises the stand frame 21 that can slide along described belt guide rail, the two-way screw mandrel 7 that is contained in the radial displacement motor 8 on the described stand frame 21 and drives by described radial displacement motor 8, comprise that also an end is connected on the described sensor module 3 and its other end is connected to the coupling arrangement 22 on the sliding nut 23 that is positioned on the described two-way screw mandrel 7, described radial displacement motor 8 drives two-way screw mandrel 7 with a direction and rotates when making two sliding nut 23 pitch smaller, the spacing of described sensor module and described two-way screw mandrel 7 increases, otherwise then dwindles.
In according to circulating type cable sign reading device provided by the invention, described Unit second comprises the belt motor 18 that is contained on the described stand frame 21, be located at the guide groove 25 that can cooperate with ring-shaped guide rail on the stand frame 21, be contained in described ring motor 18 rotating shafts can with rack inner wall rib-loop groove 19 meshed gears 17, the motor 18 that make to go in ring rotate can drive stand frame 21 and sensor module 3 along rack inner wall ring-shaped guide rail 24 around moving.
In according to circulating type cable provided by the invention sign reading device, described upper bracket 10 is provided with and prolongs sheet 12, and prolonging sheet 12 has spring 4 to make that upper bracket 10 and lower carriage 11 are in closure state under the normality with being connected between the support plate 20.
In according to circulating type cable sign reading device provided by the invention, the gauge tap of described radial displacement motor 8 and belt motor 18 is contained on the shell of described main part 1.
In according to circulating type cable sign reading device provided by the invention, each described collet chuck 5 comprise isosceles triangle that elastic sheet is made last slice 51 and following sheet 52, the two ends of described last slice 51 isosceles triangle bases and described upper bracket 10 are affixed, described down sheet 52 isosceles triangle bases are affixed with described lower carriage 11, described last slice 51, time sheet 52 isosceles triangle summit opposite positions are respectively equipped with pad.
In according to circulating type cable provided by the invention sign reading device, last slice 51 pad place, upper bracket 10, lower carriage 11 hinged sides of described collet chuck 5 have a curved down block; Perhaps following 52 pad place of collet chuck 5, upper bracket 10, lower carriage 11 hinged sides have one to go up curved block.
According to circulating type cable provided by the invention sign read method, may further comprise the steps: placed the center of lower carriage in the folding but A. will read cable; B. stretching and fixedly quilt read cable; C. sensor module (hereinafter to be referred as the CIS module) 3 moves radially and is read cable; D. read the identification code of being read a last side, cable surface by CIS module 3 sensings; E. make the CIS module around being read the belt step-length of cable, reading the identification code of being read a last side, cable surface, repeat this step until going in ring a week around being read cable; F. the described identification code of being read the cable surface that reads acquisition is carried out corresponding identification processing and passes through wired or wireless interface join dependency database.
In according to method provided by the invention, described steps A may further comprise the steps: the CIS module is resetted; Depressing the prolongation sheet makes lower carriage become the opening shape; To be read cable and be placed on carriage center, and make upper bracket, lower carriage return to closure state.
In according to method provided by the invention, the CIS module be may further comprise the steps around being read the belt step-length of cable: the motor drives of going in ring and rack inner wall rib-loop groove meshed gears rotate; The stand frame of fixedlying connected with gear drives CIS module 3 and moves along the rack inner wall ring-shaped guide rail.
In according to method provided by the invention, described step C may further comprise the steps: start the two-way screw mandrel rotation of radial displacement direct motor drive and make the position of the sliding nut on the described two-way screw mandrel close; By the coupling arrangement that is connected in described sensor and sliding nut the distance of two-way screw mandrel and described CIS module being increased makes described CIS module near tested cable.
In according to method provided by the invention, the step that the described CIS of making module resets comprises: go in ring motor drives stand frame and CIS module oppositely move back to reference position along the rack inner wall ring-shaped guide rail, the two-way screw mandrel counter-rotating of radial displacement direct motor drive make two sliding nuts away from, make screw mandrel and sensor distance reduce to drive stand frame and the CIS module is got back to reference position by coupling arrangement.
In according to method provided by the invention, described adjusting sensor and the distance that is read the cable sign, may further comprise the steps: start radially motor, drive two-way screw mandrel forward or reverse, make when just changeing two sliding nuts close, make two-way screw mandrel and CIS module apart from increase by coupling arrangement; Make during counter-rotating two sliding nuts away from, by coupling arrangement screw mandrel and CIS module distance is reduced.
Implement cable bar-code reading device provided by the invention and method, the thickness of bar cable no matter, the form of sign, all can directly read the machine readable identification information on the cable, for example, bar code, two-dimensional bar, the optical identification character, color lump etc., also can utilize the scrambler language digital coding that cable is relevant to be one-dimensional bar code, again with laser marker with on this one-dimensional bar code printed cable, at any time read in and directly connect electronic databank by scanner, by in database, searching relevant information, can realize the compiling locating function in literal or the form compiling system.Similarly processing also can be adopted two-dimensional bar, utilizes cable sign reading device of the present invention to decode after obtaining this two-dimensional bar, connects electronic databank again.Equally, the cable sign also can directly be a numeral and alphabetical, utilize cable sign reading device of the present invention and method after sensing this numeral and alphabetical information, carry out OCR identification again, connect electronic databank, thus can be in very little space, even in staff and the finger space that is difficult for entering, and read under the occasion that cable can not be drawn out or break or twist, read the lip-deep bar code information of each bar cable easily,, connect and searching database by decoding, thereby understand all relevant information that are read cable, for example, the purposes of this cable, the length of cable, joint location or the like is to make things convenient for the laying of cable, maintenance and maintenance.Implement cable provided by the invention sign reading device and method, can improve the efficient of the installation of cable in various device, detection, maintenance etc. greatly.
Description of drawings
Fig. 1 is the projection width and the actual spreading width synoptic diagram of bar code on the cable;
Fig. 2 be on the cable bar code because of the synoptic diagram of bending distortion;
Fig. 3 is fixed bar-code reading device image-forming range synoptic diagram;
Fig. 4 is fixed laser bar code reading device structural representation;
Fig. 5 is the fixed bar-code reading device synoptic diagram of the angle of polishing and reception in the plane of giving out light;
Fig. 6 is the polishing of fixed laser bar code reading device on the face of cylinder and the angle synoptic diagram of reception;
Fig. 7 is the structural representation that circulating type cable sign reading device of the present invention decomposes;
Fig. 8 is first cross-sectional view of the single working sensor state of explanation;
Fig. 9 is second cross-sectional view of the single working sensor state of explanation;
Figure 10 is the 3rd cross-sectional view of the single working sensor state of explanation;
Figure 11 is the synoptic diagram of circulating type cable sign reading device user mode 1 of the present invention;
Figure 12 is the synoptic diagram of circulating type cable sign reading device user mode 2 of the present invention;
Figure 13 is the synoptic diagram of circulating type cable sign reading device user mode 3 of the present invention;
Figure 14 is the radially axial arrangement synoptic diagram of moving process of explanation CIS module 3;
Figure 15-Figure 17 is the synoptic diagram of explanation collet chuck principle of work.
Embodiment
Each label is unitedly described as follows among Fig. 7-Figure 17: the 1st, and main part, the 2nd, be identified cable, the 3rd, contact-type imageing sensor (CIS) module, be also referred to as sensor module, the 4th, spring, the 5th, collet chuck, the 6th, signal wire and power lead, the 7th, two-way screw mandrel, the 8th, two-way screw mandrel motor, also claim the radial displacement motor, the 9th, hinge, the 10th, upper bracket, the 11st, lower carriage, the 12nd, upper bracket prolongs sheet, 13-15 is a button, the 16th, and display screen, the 17th, gear, the 18th, motor goes in ring, the 19th, the rib-loop groove, the 20th, connect support plate, the 21st, stand frame, the 22nd, connect pole, the 23rd, sliding nut, the 24th, ring-shaped guide rail, the 25th, guide groove, the 51st, collet chuck last slice, the 52nd, following of collet chuck.
As shown in Figure 7, in an embodiment of circulating type cable sign reading device of the present invention, comprise main part and sensing holder part.Main part as shown in Figure 7 comprises main body cover 1, is contained in the circuit part in the main body cover 1 and display screen 16 and three the control knob 13-15 that are contained in main body cover 1 surface.Circuit part wherein is used for the electric signal of sensing holder part is handled, for example analog to digital conversion/signal amplification/decoding etc., the result who identifies is shown by display screen 16 or testing result is sent to host computer or other terminal device by the wire/wireless interface that is also included within the circuit part, above-mentioned wire/wireless interface can link to each other circulating type cable sign reading device of the present invention with computing machine, and, also can insert power supply by this interface by this interface bi-directional transfer of data and control information.
As shown in Figure 7, but the sensing holder part comprises upper bracket 10, passes through the lower carriage 11 that hinge 9 is connected with upper bracket 10 foldings, and two parts close the back and become cylindric, at this cylinder inner wall, evenly be provided with axial rib-loop groove 19, on this cylinder inner wall, also have the endless track 24 of a circle projection.The CIS module 3 that the present invention adopts is contained in the stand frame 21, the guide groove 25 that can match with endless track 24 is arranged in stand frame 21 bottoms, but make both relative displacements, when motor 18 starts rotation, gear 17 rolls on rib-loop groove 19, stand frame 21 goes in ring along rack inner wall along belt guide rail 24, shown in Figure 11,12,13.The gear teeth of gear 17 match in rib-loop groove 19.CIS module 3 links to each other with two-way screw mandrel 7 by coupling arrangement 22, makes the 3 all right radial motions of CIS module.
The two ends of sensing holder part as shown in Figure 7 also have collet chuck 5 respectively, about two collet chucks 5 comprise slices 51 and following sheet 52 respectively, last slice 51 and following sheet 52 be respectively the elastic sheet that profile is similar to isosceles triangle, its triangle base is separately fixed at the end of upper bracket, lower carriage, last slice triangle base of 51 is fixedly connected with an end of sensor upper bracket 10 respectively, the two ends of lower carriage 11 have following 52 of collet chuck 5 respectively, respectively with corresponding last slice 51 relative and keep less gap, this gap length depends on the thickness that is identified cable 2.Under normal conditions, the sheet up and down 51 of collet chuck 5 and 52 closures can clamp and the stretching cable 2 that is identified.
As shown in Figure 7, the support plate 20 of connection is arranged between sensing holder part and main part, connect the lower carriage 11 that support plate 20 connects in the sensing holder part, support plate 20 is provided with signal wire and the power lead 6 that is used to transmit electric signal and power supply between CIS sensor and the circuit board, and make control knob 14-16 on the main body by the corresponding motor of control, can control CIS module 3 the position and with the distance of cable.
Fig. 7 in conjunction with Figure 11-Figure 13 as seen, but be connected and folding by hinge 9 between upper bracket 10 and the lower carriage 11, this hinge 9 makes between upper bracket 10 and the lower carriage 11 and closes up under the normality.Wherein upper bracket 10 prolongs sheet 12 in addition, prolong sheet 12 underlying springs 4, overcoming spring 4 pushes when prolonging sheet 12, upper bracket 10 can be opened, make that being identified cable 2 can enter central authorities, two ends of cable are clamped in the collet chuck 5, and the part between two ends is besieged to be rolled in the circular central authorities that upper bracket 10, lower carriage 11 are formed.Figure 11 illustrates upper bracket 10, lower carriage 11 is opened, and prepares to insert the state of cable 2; Figure 12 illustrates cable 2 and puts into support, but situation about not clamped by collet chuck 5 as yet; Fig. 13 illustrates to close up by last lower carriage and makes the two ends of cable 2 be clamped stretching situation by collet chuck 5.
After Fig. 8-Figure 10 illustrates cable 2 and is straightened, CIS module 3 is fixed on the diverse location that central cable 2 scans at the sensor stand inner wall surrounding, in conjunction with Fig. 1 as seen, motor 18 fixedly is housed on the stand frame 21, be equipped with in motor 18 rotating shafts and rack inner wall rib-loop groove 19 meshed gears 17, motor 18 rotation driven gears 17 rotate, and stand frame 21 is driven makes sensor module 3 move around being read cable by guide groove 25 along ring-shaped guide rail 24.The diverse location that CIS module 3 is moving radially also is shown among Fig. 8-Figure 11.
The structure of the first module that realization CIS module 3 moves radially as shown in figure 14, the two-way screw mandrel 7 that motor 8 also is housed in stand frame 21 and drives by this motor 8, also comprise coupling arrangement 22, this coupling arrangement 22 can be two rigid rods, the one end is connected on the stand frame 21, and the other end is fixedly connected on respectively on two sliding nuts 23.When motor 8 drove two-way screw mandrel 7 and rotates with a direction, the distance between two sliding nuts 23 diminished, and then CIS module 3 increases with the spacing of two-way screw mandrel 7, presses close to be read cable 2; Rotate when making two sliding nut 23 spacings become big when motor 8 drives two-way screw mandrel 7 in the opposite direction, the pitch smaller of sensor module 3 and two-way screw mandrel 7 away from being read cable 2, is got back in the stand frame 21.Since control motor 8 can control CIS module 3 with by the spacing of sensing cable 2, can control the position of CIS module 3 by control motor 18, thereby can realize that CIS module 3 is close to the optimum scanning position of cable 2 at rack inner wall.
It is as follows to specify the course of work, presses the button 15, makes motor 8 work of control screw mandrel and throwing gear, and the first module and second unit mechanisms are resetted.This moment, sensor module 3 was in the original position, as shown in Figure 8.There is hinge 9 to connect and to relatively rotate between the last lower carriage 1,, upper bracket 10 and lower carriage 11 opened, as shown in Figure 8, cable 2 is placed on carriage center, as shown in Figure 9 when the prolongation sheet 12 on the upper bracket 10 is depressed.Unclamp and prolong sheet 12, then upper bracket 10 under the elastic force effect of spring 4 with lower carriage 11 closures, as shown in figure 10.In closing course, collet chuck 5 is clamped cable 2 two ends, under collet chuck 5 self character effects, to both sides tensions cable 2 and make and be read cable and be fixed on the support axial centre, as shown in Figure 5.The button 13 and 14 of regulating control screw mandrel motor 8 and control gear motor 18 is aimed at sensor module 3 and is pressed close to bar code on the cable, begins scanning then, reads by CIS module (3) sensing and reads the identification code of being read a last side, cable (2) surface; Make CIS module (3) around being read the belt step-length of cable (2), reading the identification code of being read a last side, cable (2) surface, repeat this step until going in ring a week around being read cable (2); The described identification code of being read cable (2) surface that reads acquisition is carried out corresponding identification processing and passes through wired or wireless interface join dependency database, as shown in Figure 8.
Below in conjunction with Figure 15-Figure 17, further specify the principle of work of the collet chuck 5 of the present invention's employing.In the closing course of last lower carriage, the angle D1 of last lower carriage reduces, and size L1 reduces, and collet chuck is drawn close mutually, as shown in Figure 5; When angle D1 was reduced to D2, the L1 size was reduced to L2, and this moment, two contacts of collet chuck 5 contacted, as shown in figure 16; When angle D2 continues to reduce, L2 also continues to reduce, as shown in figure 17, when size was reduced to L4 by L3, because collet chuck is closed, and the length L of collet chuck was constant, so the contact of collet chuck moves to A ' by position A, in like manner, the contact of another side corresponding with it also moves to B ' by B, thereby plays the effect that cable is stretching.
Last slice place, 51 contact of collet chuck 5 of the present invention, go up lower carriage 10,11 hinged sides a curved down block can also be arranged, as shown in Figure 7, when last lower carriage 10,11 is opened, collet chuck 5 has only a side to open, and opposite side is sealed by block, makes to be read cable 2 more quickly and accurately by the contact of the sheet up and down 51,52 of collet chuck 5 clamping, stretching.Same principle, also can following 52 of collet chuck 5 place, contact, on lower carriage 10,11 hinged sides be provided with block curved on.
Utilize cable bar-code reading device of the present invention, can directly link to each other with computing machine or other data processing equipment, for example USB interface or pcmcia interface, blue tooth interface etc. by various wired or wireless interfaces.Cable bar code readout device of the present invention through decoding and utilizing this decoded information directly to access various information relevant with this cable in the corresponding data, has made things convenient for the setting and the maintenance of cable behind the bar code of obtaining the cable surface or other identifying information.The present invention adopts contact-type image sensor (CIS, be the abbreviation of Contact Imagine Sensor) module, use the CMOS photoelectric detector, can be converted to the electric signal that has image information coming from by the reading matter body and reflected light that have the image information on it.This technology obtains widespread use in paper feed type or flatbed scanner.The CIS module generally comprises shell, light source, lens, sensor and driving circuit; One of them face light-permeable in each face of shell, can contact the focal plane of the face of being read; Light source should be able to evenly illuminate by reading face; The CIS module that uses in some color scanners often has the red, green, blue three-color light source, takes turns to operate under the control of driving circuit, obtains by the color image information on the reading face.Lens will derive from by the reflected light of the face of reading and converge on the sensor; The light signal that sensor will have image information is converted to the electric signal that has image information.Sensor generally is an array, can be linear array, also can be the face array.
CIS module 3 of the present invention has corresponding to the linear array transducer of being read the length that identifies on the cable and corresponding lens arra.Its inner structure compactness has the shell than the elongated focal plane of small size, and this focal plane is towards being read cable 4 to adapt to its less diameter.Light source of the present invention can be in the shell of CIS module 3, also can be the appropriate location beyond the shell of CIS module 3, evenly illuminates to be read cable 4, to make things convenient for reading of cable identification information.Can there be driving circuit in the CIS module 3 of the present invention yet.