Postat: 31 augusti 2004, 11:40:56
av matseng
Här är den översatta texten:
Experiment and production of laser projector (intermediate report)
[ August 22nd (day) ]
Construction of the summer vacation which piecemealhas been done mono is with the witch っ daughter board, but you go to bed and to declare, that it finishes in, not be able to achieve goal at the place of the rear one step. With the notion that where, progress circumstance to today is reported it ended also the day off. After all, perhaps..spending the first half of the day off to Fate case of defeat So, that コンプ not to be possible. As for the person who chases two daughters you can feel the 諺 which calls also two daughters not obtaining painfully. Furthermore, because this is not the proper form report, it abbreviates small place such as explanation and the circuit of the back gland.
As for the laser projector, (the ま it is with thing of the projector which designates the laser as the illuminant the ま (the ^^; ) The use form is divided into two broadly. As for one those which show the laser beam itself which flies about to the audience. As for one more being able to send laser spot on the screen, those which draw graphics. Because former impact is strong, being to be used for the production of the disco and various stages frequently, it will adapt and probably will be deep. Concerning laser light/write show,you think thatthe variety it can trace from here.
Well, designing it becomes that laser projector this time, the mono original work, it is something which, will be scribbled in the wall of somewhere, (the ぉ ぃ (the ^^; ). The principal component which forms the laser projection system, the laser, is three of the scanner and the controllers mainly. As for the laser the solid state laser where with direct irregularity finishes (only monochromaticity) with, the gas laser which can form multi wave lengths simultaneously (other wayPCAOM is needed) to be, it is used properly according to circumstance. The polygon mirror scanner (raster scanning system) with the galvanometer scanner (vector drawing system) there are two kinds in the scanner, can use latter. The controller the device which generates the vector signal in order to make the beam the scanner shake is (micro-computer baseplate and PC etc.).
Laser module
As for the laser of 0.1 - several W classes which are used in the projector for business, is not kind of something which anyone can handle safely and, ¥ several it meaning that also or more dozen - 1000000 does, it cannot procure simply. But,the laser module whosecost performance is good from co-orientation electronic industry was sold, drastically changed circumstance. You say that the sight which has been reported concerning this is several, according to those is an individual of the 10 time thing output of the place of nominal 5mW.
I purchasing something promptly, when you try measuring with the power meter, all around seeing 15mW it had come out in that way state, (the ぉ ぃ (the ^^; ). When it tries applying to the white paper, with brightness of the extent where also the eye is glared, you can think as the output which is sufficient for the small-scale projection. But, when temperature of module rises, because output falls extremely, in order to be stabilized output, heating & cooling with the Peltier element and the like of micro-computer control, as maintained case temperature at optimum value, controlling, don't you think? is, it does not become. After all, being to be the laser of the cheap article, it probably will be helpless.
Galvanometer scanner
If with the notion that where, then only the galvanometer scanner it is, the laser entered into the hand, as for the system, it is kind of something which is completed. But, set to arrange, because with the inexpensive item ¥10 ten thousand or more, it does also ¥ several 100000 with standard ones, it is not the kind of substitute which can be bought after all with play. After all, this came to the point of the original work doing, became most important topic of the latest project. As for the original work of the closed loop control galvanometer scanner, the ancestor was not and it was continuation of trial and error, but somehow it was possible to make カタチ. If you develop to here, you think then that anyone can be made our simply. As for image the right with principal part of galvanometer, section item is as follows. Because it is the mixture of the junk, in ¥1 ten thousand it was settled with 2 axes which include the amplifier.
Frame. Those which cut the universal board suitably.
Stator winding. Winding 0.3mmUEW in type, those which it sets with the varnish. Torque is generated in the action of the magnet of the magnetic field and the rotor by this.
Ball bearing. 5mm bearing of mini- four running parts.
Rotor. In the axis of 100 Yen motor of Siyuugetu's, cutting the magnet of junk HDD of 300 Yen, the taking り you attached.
Detector movable electrode. It cuts the thin glass baseplate where it sells with Siyuugetu and pulls out and produces.
Detector fixed electrode. Ditto.
Galvanometer while assembling. Because it is moving magnetic type, in order to avoid needless reluctance torque, it tried making complete core less structure. The precise die being necessary in processing the silicon steel sheet, there are also times when the original work of the core is difficult, but. Because there is no return path of magnetic flux, torque constant is rather low, (2.5mN-m/A).
Closed loop control, state of the controlled system (temperature speed position and the like) feeding back, by comparison with order value while, in order to lose error, has influence which it controls. It is generally known servo control. The photograph is enlargement of the detector in order to assure the position of the rotor. Optical system electromagnetic system the variety you thought, but it tried adopting the simple electrostatic system of structure. As for this the electrode of 2 sets (depending upon position ratio of capacitance changes) detects the lop-sided amount of the electric current which flows including alternating current volts, as position, those where. The spring which holds down the axis gives GND electric potential to the movable electrode, applies pressure to the bearing simultaneously and forms the function which loses abnormal play.
Mirror mount. Cutting the mirror in suitable size, it glues to the mount which processed the φ 5mm aluminum round bar. The mirror which is used in the optical system is the front surface mirror without exception almost. You use as for the mirror whichatエドモンド purchase (the front surface mirror of 150mmx38mmx1mm the ¥2200).
Servo amplifier
The servo amplifier which drives the galvanometer. Because it could not procure DSP which it is easy to use, it was and could do with analog servo going tried. It meaning that is sufficient just the cheap analog part, it is low cost, but it is difficult to increase control record. Because also the driver is the linear amplifier, it has meant that heat generation is enormous well enough, (the ^^; .
Step response of servo (at the time 30 degree in optical wobble angles)such feeling. Because ン 100000 they are 500 - 700 μ s with the advanced scanner which is done, if the junk 1ms it is strong with the original scanner, when you said tolerably? Rather than expecting, with rather good efficiency, it became the result which satisfaction goes temporarily.
Controller
The controller because if simply the vector signal and the modulating signal of the laser should have been formed, very is simple. As for the main part, the flash memory which the micro-computer tip/chip and the frame file store is done, that and just 12bitDAC which forms vector information as X axis and the control signal to the Y-axis.
Recently, in being troubled, those where the DIP part does not exist in especially digital IC became many, in the future at the time of electronic building as for use of the surface mount technology part, avoiding, became the topic which it cannot pass. It is necessary to be accustomed to the mounting QFP among now.
It tries moving temporarily
Temporarily, because the sufficient function which swings the beam suitably was possible, making the room dark, it tried doing the imitation thing of laser light/write show. In such case, it is something which designates techno sound as BGM, but being not to have the suitable sound source operational sound of the scanner is inserted together in substituting.
Video file (avi:1.5MB)
Compilation of vector data
Consequently it will try going even with vector graphics?. With being the place where it comes, you became aware in serious miscalculation. "As for the data how doing? ". There being a graphics file, you must make data-oriented the line drawing vector. Furthermore, the picture is handled, GUI application must be written. So far, GUI application with work VB5 was used inexpensively, but at the home only VC6 we owned, with VC only CUI application you have written. Time remains and is little. From now on enrolling to VC GUI programming, it probably will be in time?
Finally after all, in the circumstance that, being last day, the question which keeps picking up vector from the picture also 3 days are required for writing that much functional GUI application which is sung, you completed. Leaving the vector graphic correspondence of F/W of the controller, the time out. After all when the prospect was sweet, in Fate the hammer っ て being is case of defeat? In the future you do not do either ギャルゲ deliberately with useless we would like to see, is.... (-_-; .
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[ August 28th (Saturday) ]
Vector graphics
Recovering the air, you are not hasty and wait and/or with keep advancing. Because it reached the point where the vector data can be drawn up, completing F/W correspondence, and it tried data transfer indicating. Is not experiment of the television, but according to promise it tries indicating "イ". Very, it is the イイ feeling, (laughing). Because it is the simple frame, flicker is not almost felt, (43fps).
Next,oh it is it is tweetit tries indicating. A little being to be the complicated frame 26fps. When it reaches this extent, it reaches the point where you can feel flicker. Without waiting for the lag of the scanner on the line of part, it tried applying the blanking, but after all timing slipped. Properly after with starting point terminus just enactment time waiting, it seems that the one which the blanking ON/OFF is done is good. And as a last finish, the ギコ cat it is it is stealthily it tries projecting to the wall of the earthdoor addingfield apartment. Temporarily, achieving the goal of beginning with this! (^_^).
It tries indicating ILDA test pattern. ILDA test pattern, is, the frame data of laser display de facto standard in order to appraise the adjustment and efficiency of the scanner. When you refer to television system, those like モノスコパターン. In the projector for business, ILDA test pattern 30kpps (you do not question scan angle, but as for many 8 degrees) with it has become standard of vector graphic correspondence to be able to scan.
As for the photograph, at the time of 18kpps and 8 degrees, in case of this original scanner, at 8 degrees this speed seems like the limit. As a closed loop control is not better one, but the scanner of opening loop control (- 12k) you can say that it is better.
Temporarily, with this project finished product. After it just arranges to the report, but the following project becoming simultaneously with the achievement impression matter of concern, vigor gauge at a stroke down (the ^^; . Well ending, as for the proper form report becoming sometime. - No one has interest in such production?.. (the ^_^; .
Postat: 31 augusti 2004, 16:06:12
av zeus
Så kan jag oxå göra.
Nä, seriöst, grymt imponerande, när får vi se något liknade här?
Postat: 31 augusti 2004, 16:21:15
av Hedis
Han är grym, han lindade ju tom. sina egna motorer. Varför?
Vi hade väll en kille här som byggt en laserprojketorn. Allas våran elektronikkonstruktör/EMC-snubbe
Postat: 31 augusti 2004, 16:27:03
av matseng
Det var inte motorer han lindade, det var galvanometrar - enkelt förklarat en grej som vrider sig olika mycket beroende på hur hög spänning man lägger på dom.
Postat: 31 augusti 2004, 19:33:54
av matseng
Översättningen är klart lustig att läsa, och lite svårtolkad både här och var. Men jag får det till att han har hackat softan själv oxo..
