LT2009105A - Videokameros valdymo irenginys - Google Patents

Videokameros valdymo irenginys Download PDF

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Publication number
LT2009105A
LT2009105A LT2009105A LT2009105A LT2009105A LT 2009105 A LT2009105 A LT 2009105A LT 2009105 A LT2009105 A LT 2009105A LT 2009105 A LT2009105 A LT 2009105A LT 2009105 A LT2009105 A LT 2009105A
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LT
Lithuania
Prior art keywords
servomechanisms
camera
camcorder
control unit
videokameros
Prior art date
Application number
LT2009105A
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Lithuanian (lt)
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LT5753B (en
Inventor
Aleksej Zaicevskij
Original Assignee
Aleksej Zaicevskij
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aleksej Zaicevskij filed Critical Aleksej Zaicevskij
Priority to LT2009105A priority Critical patent/LT5753B/en
Publication of LT2009105A publication Critical patent/LT2009105A/en
Publication of LT5753B publication Critical patent/LT5753B/en

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Abstract

The invention relates to controlling mechanical platforms, which allow to direct video camera to desirable direction or stabilize its position. For reducing vibrations which are related to a servo motor, two servomotors are provided for ach pivot ofplatform. Said servomotors in idle position form a load in opposite directions.

Description

11

Videokameros valdymo įrenginys Išradimas yra susijęs su videokamerų stovais, kurie įgalina filmavimo metu keisti kameros padėtį servomechanizmu.The present invention relates to camcorder stands which enable the camera to change the position of the camera during servo operation.

Pastaruoju metu videokamerų stovai, įgalinantys keisti kameros veikimo kryptį, dažnai yra naudojami ne tik krypčiai keisti, bet ir aktyviajam stabilizavimui, kuomet kamera yra įrengta ant judamojo pagrindo. Kameros įrengimo ant judamojo pagrindo su stabilizavimo atlikimu servomechanizmais pavyzdys yra pateiktas paraiškoje patentui US 20090207250. Kameros padėtis yra kontroliuojama elektroninių daviklių. Daugelio taip įrengtų videokamerų modelių servopavaros turi pakankamai greitą reakciją, kad galėtų išsaugoti vizualų horizonto linijos nejudrumą kadre. Stabilizuodama svyruojančią kamerą, servopavara turi dažnai keisti sukimosi kryptį. Servomechanizmo veikimo rezultate kamera patiria nedidelės amplitudės smūgius. Net jei pavyksta pašalinti kadro drebėjimą pasitelkus skaitmeninį videomedžiagos apdorojimą vaizdo ryškumas vis tiek pablogėją ypač kai filmuojama esant nepakankamam apšvietimui ir didesnei ekspozicijos trukmei. Nepageidaujamų virpesių amplitudė yra susijusi su tokiais veiksmais: bendru servopavaros reduktoriaus laisvumu, bendru atramos jungčių laisvumu, nepakankamu konstrukcijos standumu, servomechanizmo reakcijos į padėties daviklio signalą vėlavimu. Dar vienas dažnai pasireiškiantis trūkumas - kameros siūbavimas, stiprinamas servomechanizmo. Kadangi videokameros masė yra nemaža, ji, veikiama inercijos, nesustoja numatytame taške. Servomechanizmas grąžina kamerą į numatytą padėtį, o tai sukelia didėjantį siūbavimą. Išradimo tikslas - sumažinti nepageidaujamus videokameros svyravimus servopavaros naudojimo atveju. Uždavinys sprendžiamas įrengus po dvi servopavaras kiekvienai sukimosi ašiai. Besisukant kamerai, servopavaros veikia sinchroniškai, bet neutralioje padėtyje jos sudaro nedidelę apkrovą priešingomis kryptimis. Tai sąlygoja transmisijos laisvumo kompensavimą ir smūgių išvengimą keičiantis sukimosi krypčiai. Taip pat yra sumažinama reakcijos į valdymo signalą vėlavimo trukmė.Recently, camcorder mounts that allow changing the direction of operation of the camera are often used not only for changing direction, but also for active stabilization when the camera is mounted on a movable base. An example of the installation of a camera on a movable base with stabilization performance servomechanics is disclosed in U.S. Patent Application Publication No. 20090207250. The position of the camera is controlled by electronic sensors. Many of the camcorder models equipped with this feature have a sufficiently quick response to maintain the visibility of the visual horizon line in the frame. When stabilizing the oscillating chamber, the actuator must often change the direction of rotation. As a result of the servomechanism, the camera is subjected to minor amplitude shocks. Even if you succeed in eliminating the shake through digital video processing, the sharpness of the video still deteriorates especially when shooting under low light and longer exposure times. The amplitude of unwanted oscillations is related to the following actions: overall freedom of the servo gearbox, total freedom of the support joints, insufficient rigidity of the structure, delay of the servo mechanism reaction to the position sensor signal. Another common defect is the camera sway, reinforced by a servomechanism. Because the camcorder's mass is high, it does not stop at the default point when exposed to inertia. The servomechanism returns the camera to its predetermined position, which causes an increasing swing. The object of the invention is to reduce unwanted fluctuations of the camcorder in the case of the use of an actuator. The task is solved by installing two servo drives on each rotary axis. While turning the camera, the actuators operate synchronously, but in a neutral position they form a small load in opposite directions. This results in the compensation of the transmission's freedom and the avoidance of shocks in the direction of rotation. Also, the delay time for the response to the control signal is reduced.

Fig. 1 yra pateiktas dvigubos servopavaros įrengimo vienoje sukimosi ašyje pavyzdys. Pozicijos: 1 - platformos su videokamera sukimosi ašis (arba viena iš sukimosi ašių); 2,3 - servopavaros.FIG. Fig. 1 shows an example of the installation of a double actuator in one rotary axis. Positions: 1 - the axis of rotation of the platform with the camcorder (or one of the rotary axes); 2,3 - servo drives.

Naudojant servopavaras, taikomas standartinėse distancinio valdymo sistemose, jos yra modifikuojamos, siekiant užtikrinti sukimąsi be nuokrypių apribojimo. Neutrali 2 servopavarų padėtis yra nustatoma su nedideliu nuokrypiu nuo proporcingo valdymo signalo neutralios reikšmės, bet priešinga kryptimi. Po tokio derinimo abi servopavaros yra prijungiamos prie vieno valdymo kanalo.When used with a servo actuator for standard remote control systems, they are modified to ensure rotation-free operation. The neutral position of the servo actuators is determined with a slight deviation from the neutral value of the proportional control signal, but in the opposite direction. After this adjustment, both actuators are connected to one control channel.

Reikiamas servomechanizmų atoveiksmis yra nustatomas bandymų keliu ir priklauso nuo kameros masės, balansavimo ir sukimosi greičio. Ryšys tarp servopavarų ir platforma su videokamera gali būti palaikomas per krumpliaračius, diržus, lynus arba traukies. Leidžiama įrengti dvigubos servopavaros mechanizmą viename korpuse. Vietoje videokameros gali būti valdomi kiti prietaisai, pavyzdžiui, lazerinis modulis.The required response of the servomechanisms is determined by the test path and depends on the chamber weight, balancing and rotation speed. The link between the actuators and the platform with the camcorder can be maintained by gears, belts, ropes or pulls. It is allowed to install a double servo mechanism in one housing. Other devices, such as a laser module, can be used instead of the camcorder.

Claims (6)

1 Aapibrėžtis 1. Videokameros valdymo įrenginys su viena ar daugiau sukimosi ašių, besiskiriantis tuo, kad jame yra įrengta po du servomechanizmus kiekvienai sukimosi ašiai, kurie neutralioje padėtyje sudaro apkrovą priešingomis kryptimis.1. Definition 1. A camcorder control unit having one or more rotary axes, characterized in that it is provided with two servomechanisms for each rotary axis which, in a neutral position, loads in opposite directions. 2. Videokameros valdymo įrenginys pagal 1 punktą, besiskiriantis tuo, kad servomechanizmai ir kameros platforma yra susietos per krumpliaračius.2. A video camera control unit according to claim 1, characterized in that the servomechanisms and the camera platform are coupled through the gears. 3. Videokameros valdymo įrenginys pagal 1 punktą,, besiskiriantis tuo, kad servomechanizmai ir kameros platforma yra susietos per diržus.3. A camcorder control unit according to claim 1, characterized in that the servomechanisms and the camera platform are connected via belts. 4. Videokameros valdymo įrenginys pagal 1 punktą,, besiskiriantis tuo, kad servomechanizmai ir kameros platforma yra susietos per lynus.4. A video camera control device according to claim 1, characterized in that the servomechanisms and the camera platform are connected via ropes. 5. Videokameros valdymo įrenginys pagal 1 punktą,, besiskiriantis tuo, kad servomechanizmai ir kameros platforma yra susietos per traukies.5. A camcorder control unit according to claim 1, characterized in that the servomechanisms and the camera platform are linked through the traction. 6. Videokameros valdymo įrenginys pagal 1 punktą, besiskiriantis tuo, kad abu servomechanizmai yra įrengti viename korpuse.6. A video camera control device according to claim 1, characterized in that the two servomechanisms are arranged in a single housing.
LT2009105A 2009-12-24 2009-12-24 Control device for videocamera LT5753B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
LT2009105A LT5753B (en) 2009-12-24 2009-12-24 Control device for videocamera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LT2009105A LT5753B (en) 2009-12-24 2009-12-24 Control device for videocamera

Publications (2)

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LT2009105A true LT2009105A (en) 2011-06-27
LT5753B LT5753B (en) 2011-08-25

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LT2009105A LT5753B (en) 2009-12-24 2009-12-24 Control device for videocamera

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LT5816B (en) 2011-06-29 2012-02-27 Aleksej Zaicevskij Video camera controling and stabilizing device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009105254A2 (en) 2008-02-20 2009-08-27 Actioncam, Llc Aerial camera system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LT5816B (en) 2011-06-29 2012-02-27 Aleksej Zaicevskij Video camera controling and stabilizing device

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LT5753B (en) 2011-08-25

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