DE3106679A1 - Device for re-concentrating and collecting sunlight, which has been focused by a water lens roof - Google Patents

Abstract

The invention describes how the strips of maximum focusing of the light generated by the adjacent areas of a water lens roof are collected via vertically and horizontally displaceable traverses. The latter are designed as rotatable parabolic grooves for further concentration of the light. The vertical and horizontal movements are made possible by drive weights AGV and AGH, respectively. Once the AGV have been raised by means of the rope winches SWV, they then drop downwards and pull the traverses upwards, as soon as current flows through the magnetic brakes MBV. If the AGV are standing on the consoles, then the traverses can drop downwards, with unwinding of the rope winches. The displacement of the traverses relative to the transverse direction of the roof takes place in a very similar manner. Figures 1 and 2 show the associated mechanics. In addition, the invention describes and discusses in greater detail, with reference to Figures 3 to 7, how the movements of the traverses can be controlled by the sunlight. <IMAGE>

Description

Device for refocusing and catching the sun =

light that has been tied up by a canopy of water.

The invention described below is an addition to mine Registration "device for concentrating sunlight" from July 18. 1979; patent granted dated December 16, 80, Patent No. 2928969.

Below the transparent, water-covered and arched The area of the greatest constriction is formed on the surface of a duckweed roof of light in the form of a narrow strip, the length of which corresponds to that of the right This strip should be Int = intensive stripes (Ivstr) It changes its position with the rise of the sun. In order to concentrate it even further, will it is caught with a parabolic trough, on the bottom of which in a plane that defines the focal points contains its section parabolas, the energy receiver lies. A complete tracking would require constant turning and shifting in the three spatial directions. 3ei the system described is the translation movement in the longitudinal direction the parabolic trough (Pbr) is dispensed with. The resulting energy loss can be at ge = sufficient length of the duckweed (WL) must be accepted.

The parabolic trough and the rods supporting it form the traverse can be moved up and down between two guide rails like an elevator are part of a movable frame (G) that hangs on wheels that are on horizontal = right running rails roll; the latter are close below the WL = roof attached and run perpendicular to its longitudinal direction Fig.1 shows a view the narrow side of the tracking device.

Dst support column for the roof G sliding frame Gtr a G supporting rail MBH1 a magnetic brake for the horizontal movement U break contact F springs of the brake SWH1 a cable winch with its magnetic brake for the horizontal movement and the associated guide carriage AGH1 and AGHD drive weights for the horizontal movement = ung K1K) and K brackets Pbr parabolic trough, Tr truss rods to give the Pbr support DA axis of rotation, in the middle of the opening of the Pbr attacking ZM additional masses so that the center of gravity lies in the dren axis Fst guide rod, FS guide carriage PA axis direction one to the longitudinal extension of the Pbr vertical section parabola starboard control board for light-dependent resistors KH transparent cooling water sleeve, adapted to the Pbr BSo solar cells mounted on the floor of KH SWV1 cable winch with magnetic brake and associated guide carriage for vertical displacement AGV a drive weight for the upward movement of the Pbr SH and SV pulling ropes If G is to go to the left, there must be an excess weight on the left side and the brakes MBH1 and MBH2 must be open. The excess weight is determined by lifting AGH1 and AGH2 by the associated winches from the consoles K1 and K2 is reached. With the brakes MBH1 and MBH2 applied, the cable = winch brakes are pulled up to under the cable winches. When their brakes are applied again and the two MBHs have electricity flowing through them, the frame moves to the left as a frame. To On the right there is an overweight if AGH1 and AGH2 have been placed on consoles K1 and K2. If the brakes SWH13 and SWH2B of the cable winches SWH1 and SWH2 are released together with the brakes MBH, the movement to the right takes place. The ropes unwind on the SWH.

Moving the traverse up and down in the frame is the same Way with the help of SWV1, SWV2 and their brakes SWV1B, SWV2B and the drive weights AGV1, AGV2 and the magnetic brakes MBV1 and MBV2 reached.

The matching pairs SWH, SWHB, MBH; SWV, SWVB and MBV are each connected in series in their circuits, so that in this respect each Pair can be seen as a unit, which is why it is later in the text and at the circuit diagrams with SWH'SWHB, SWV, SWVB, MBH and MBV each mean a pair.

Of the pairs MBH and MBV there is one brake with the breaker contact U, which works like a Wagner hammer on a spark inductor The interruptions of the current achieved in this way have the meaning that the displacement the traverse or of the frame takes place only in very small steps and the kinetic energy can never grow so much that the brakes can no longer grasp when the current is interrupted In the drawing there is the possibility of the interrupter circuit by means of a Relay to be short-circuited, not specified O such must exist if the Traverse should be quickly brought into a desired position.

Fig, 2 shows a view of the longitudinal side of the frame.

In addition to the parts of the construction that can be seen in FIG are still a longitudinal beam (Ltr) of the roof and the attack = thorns (hdo) of the pull ropes indicated for the horizontal shift in the drawing.

Some blackened ones lying on the bottom of the Pbr come as energy receivers Tubes through which a heating liquid flows is supplied to a heat exchanger or it can evaporate directly in the tubes and do work in a steam machine.

However, a chain of solar cells can also serve as a receptor = enODa If their efficiency drops sharply at higher temperatures, they have to be cooled they are attached to the bottom of the transparent cooling water sleeve (KU) as follows: that the side facing away from the light with its connections completely into the plastic base The latter has a plane parallel to the opening surface of the Pbr Entry surface for the light. The side surfaces are curved so that they are the Adjust the boundary surfaces of the Pbr. The electrical connections to the light-receiving The surface of the solar cells is also coated with plastic. It is cooled with slightly acidified water directly over the one struck by the intense light Side flows.

The tracking is apart from disturbances and time signals Some of the necessary switchovers are controlled by the light itself Photoresistors that have to be fed by batteries or solar cells ¢ Au3er = Two kinds of relays are needed, one is to be used as a relay and the other can be referred to as -relays; in + relay closes when there is current through the input side the contact on the Output side while a relay controls him The circuit opens when a current flows in the controlling circuit.

For reasons of economy, the duckweed roof must consist of several Side by side, rectangular partial roofs that are very long in relation to the roof height These must be supported by regular spaced supports the area below one is divided into congruent, rectangular areas each is its own frame with the associated ceiling guide and associated Traverse required, especially for roofs that are in their longitudinal direction run from north to south, which should always be assumed in the following The traverse must be brought to them between the pillars at noon Since a partial roof creates a straight intensive stripe (Ivstr), all the cross members belonging to it must be at the same height at all times and from the meridian = plane running through the longer center line has the same distance Have, The part of Ivstr, which comes from the roof part of a district, only becomes Part of the traverse belonging to it is caught, the rest of it arrives because of the displacement of the light in the longitudinal direction in the Pbr of the neighboring district, only on the two It doesn't end.

A leftover piece is lost there.

The frames, which belong to several adjacent Daci pieces, can be combined into a single one that carries all of their cross members. For this purpose, their guide rods (Fst) are connected by cross rods gen guide = horizontal bars guided by unpowered rods are attached = en. Two cable winches with their brakes and the two associated drive weights are attached to these. This tracking system can then be controlled by a single control circuit.

To simplify the description of the control, it is appropriate to use the following Terms to use: response range (Ansp), response widths (Aspb), and intensive widths (Ivb).

The Ansp is the area below the WL roof in which a relay responds in a light-affected circuit.

The Aspb is the length of the route from the Ansp on a straight line Line is cut off, in turn in a to the longitudinal direction of the roof The Ivb is the Aspb, the points of which have the highest average intensity own = s.

There are two groups of solar cells for rotating the crossbeam on both sides of an opaque 'rectangular disc (Trs, Fig.3), the lies in the plane of symmetry of the Pbr.

If one side is illuminated sufficiently, but the other is not, then if the former are in their apprehension, but the latter are not. As a result, the The rotary motor starts up and a rotation takes place, which only stops when the other one does too Panes = side receives the same amount of light.

Fig. 3 shows a circuit diagram of the control device. The solar cell groups Sz1 and Sz3 on the left side of the disc should be in Ansp, the right not. D2 are two relays SZ1 opens D2 .D1 remains closed because Sz2 does not have enough light Through Sz3 a current is generated through D3 + and D4 + Side of D3 + is the DM rotator and the one connected in parallel to it Motor brake (MB) connected to the positive pole of the power source QD. The output side of D4 + establishes the connection of DM and MB with the negative pole.

On the right-hand side, Sz4 cannot supply any current because it is the output side is interrupted by D2-, which means that D5 + and D6 + are also interrupted.

If Sz2 and Sz4 are in Ansp, but Sz1 and 5z3 are not, then they become the polarity of the connections at DM and MB is reversed and the rotation takes place in the opposite direction Sinner. If all four solar cell groups are in tension, then D1- and D2- are interrupted, what As a result, the + relays on the controlled side are also open.

If Sz1 and Sz2 are outside the Ansp, then D1- and D2- are closed, but D3 +, D4 +, D5 + and D6 + remain open because then Sz3 u0 Sz4 are not in the Ansp In both cases there is no rotation. The MB of the DM is tightened in the course one morning the Ivstr moves from top to bottom. At the same time he removes after sunrise from the meridian plane of the WL to the west until it reaches a maximum This part of the sequence of movements should be considered as the starting = west = phase After her it moves east again until it reaches 1200 noon the meridian plane of the WL crosses. Until noon, the eastward movement should be seen as a downward-eastward phase In the afternoon the movement process takes place in relation to the meridian plane First the east-facing phase and then the west-facing phase.

Should switchovers when the sun is covered by clouds avoided, which in terms of energy and in relation to the wear of the drive motors is beneficial then require the two east phases a more elaborate one Control than the west phases. The rotary control is carried out by the control of the translational movement For these, four are sufficient in the down west phase and in the up west phase Control loops. Two are used to control the Pbr after an interruption of sunshine When this is reached, the other two circles control The vertical = and the horizontal shift = approx. Circle 1 contains the solar cell S1 , which is mounted on the roof of the WL, and the relay R1 +. He can through Rg- under S1 also feeds relay R8 +.

Circuit 2 contains the photoresistor PW and the relay R2- ° PW from a group of light-sensitive resistors, which are in the opening width the Pbr transversely to their longitudinal direction at an even distance from one another and are also mounted to the two profile edges. They are all the same = pole at R2 connected.

Circle; 3 and 4 contain the solar cell chains S2 and 5.They exist made of narrow solar cells connected in series0 contains the relays R3 + and R4-, S3 the relay R5 +.

Circuit 4 can be interrupted by R4-.

In the westward phase, S2 is at the lower and Sf at the upper edge of the profile The Pbr, if this is aimed at favorable light reception the situation reversed. The distance between the two solar cell chains is slightly greater than the largest Ivb occurring in the course of a year given the opening width of the Pbr.

In the two east phases the control is done with the help of photo resistances, the are attached to the control board starboard. In the morning by time signals or by manual Actuation of the keys provided for this purpose, the Pbr brought into a suitable starting position, not for the sake of clarity complicate, these keys have not been indicated in FIG.

In the westward phase, the SWHB are always without electricity and therefore constantly AGH1 and AGH2 have lifted off the consoles.

The west side has the preponderance over the east side.

There is no power from AI and AII, R9- is always closed, even through R6- no current can flow, R6- is always closed in the westward phase.

Case: the sun is not shining.

No current from S1, R1 + open, R8 + open, no current from Q1 and Q2 The traverse and frame remain in place.

Case: Sun is shining, R1 + and R8 + then always closed.

Fig. 5a: PW, S2 and S3 not in response, therefore too weakly illuminated.

R2- closed, current from Q1 via SWVB, MBV and R1 +. Traverse drops abO R7- open. No shifting of the frame.

Xigo 5b: The Pbr first enters the call with mt 2 R3 + is closed, additional Current from Q1 via SWVB, MBV and R3 + traverse continues to decrease.

open, R7 'G is not moved.

Fig. 5c: PW enters the Ansp.S2 remains in it.S3 is still outside.

R2- is opened. Continue rom from Q1 via SWVB, MBV and R3 + traverse R7- open G is not shifted.

Fig05d: S3 has also entered the Ansp. PW and S2 are still in it. Traverse continues to sink. R7- remains open. G is not shifted0 Fig. 5e: S2 exits the Ansp.PW and S3 still in it.

R3 + and R2- both open. No current from Q1. Traverse sinks Not. No current through R7-, R7- closed 0 No current from S2, R4- closed. Current from 53 via R4-, R5 + closed0 Current from Q2 via R7-, R8 +, MBH, R5 + .G is shifted to the west.

Fig. 5 R: A position is reached in the S2 u0 53 outside = outside des Ansp lie, PW but in seine0 current too weak from S3, R5 + open, no current off Q2, R3 + open, R2- open. No current from Q1 ° crossbeam and frame do not move.

In this last position the Ivstr falls completely into the Pbr and remains in it until S2 reaches the appendage through the wandering of the sun Location should be referred to as an optimal = location.

The ball that PW and S2 are both outside the Ansp, while 53 is still in it, on the one hand, is prevented by the fact that the opening width of the Pbr mounted photoresistors = stands to each other and to the two profile edges have a smaller distance than the smallest occurring in the course of a year Ivb and on the other hand, in that the brake MBV opens only very briefly, so that S2 only moves so little away from the Ansp that at least a resistance from PW lies in him.

If there is case Fig. 5e, but not yet case Fig. 5f, then S3 is followed West promoted. But this brings 2 back into the Ansp. The western movement of G stops, there is another downward movement, the change from downward movement and westward movement is continued until the optimum position (Fig.5f) is reached is. With the sun shining continuously, the ongoing Correction only a few horizontal and vertical steps Time is short compared to the time spent in the optimal location, except in the outskirts The Ivstr is always in the opening of the Pbr.

Should the frame only face east in the morning in the from east phase and the traverse only continues to move downwards, then it can be in the event of interruptions The circuit described cannot do that in the sunshine. This is shown in Fig. 5 g to recognize.

When the traverse sinks, it gets into the one below the Ivb lying part of the Ansp. In order to achieve the optimal situation, it would have to be outside of the east also go upstairs. But if the Pbr goes east first, then it must afterwards not only downwards, but also to the west, around Ivstr To toggle either the horizontal = or the vertical movement to avoid, therefore, the control with the help of photoresistors in the eastward phase carried out on a starboard control board This is done on one of the two guide carriages FS of the traverse at the height of its axis of rotation AD perpendicular to its longitudinal direction 0 If the sun is in the northern hemisphere at the start of the from-east phase still to the northeast, then two control boards are required, one on the guide carriage at the north end and the other on the one at the south end.

There are two groups of on each of the two control boards Photoresistors (Fig. 6). One of them has two photoresistors together with a + relay in series connection (Fig. 6) in the circuit of a power source The width of the pair is the same for all pairs. that one is in pairs by as small an amount as possible, the shift, postponed must think in order to get to the neighboring one. This group consists of several rows of such pairs of resistors parallel to the edges of the tr.

In the case of the other group, everyone forms resistance with one to him in Relay lying in series and a power source a circuit of its own (Fig. 6) All these resistors can be arranged in a row that is also parallel to runs along the edges of the tr. The distance between two neighboring photowiders = stands is always the same and is chosen in such a way that at least one is enough when the sun is shining Sun has as soon as one of the two outer pairs of the first group is fully in the Ansp stepped.

For each resistor there is one related to the Pbr's axis of rotation This applies to both groups. In Fig. 6, in addition to the pair V0V0 ' and the resistor U0, only pairs and resistors located to the right of the axis are drawn been.

For the pairs V1V2, V3 V4 there are accordingly the symmetrically placed ones Pairs V1V2, V3 V4 and for the resistors ü1, U2, U3, U4 the symmetrical U1 ', U2', U3 ', U4'.

If a pair is covered by the Ansp, then the resistance of the associated Circuit is so low that a current flows from Q3 so strong that the in the Circular relay responds.

A current then flows from Q4 via output AI, that of the other The magnetic or electronic intermediate relay that connected in series with each pair must be used, otherwise the weak currents flowing through the photoresistors, even if they are not lie in the Arisp, would add up and lead to incorrect switching For the same reason, every contradiction must also be stood the second group be connected to an intermediate relay.

Since the Ivstr is always smaller than the opening width of the Pbr, is the smallest possible response range at a time during the eastward movement on the starboard Aspb is always smaller than the quotient of the opening width and the sine of the smallest The angle of inclination that the axes of the parabolas of intersection of the Pbr have when moving to the east in the course of a year, opponents assume the horizontal. This quotient is selected as the pair width.

The switch Ums is as the Ivstr its maximum western position reached has been thrown over and then has the position indicated in Fig. 4a. SWHB is connected in parallel to MBH. AGH1 and AGH2 are placed on consoles K1 and K2 been. When the current flows through the MBH and SWHB, G moves to East.

PW is switched off, R2- always closed. R5 + is not powered flowed through, therefore always open0 case: sun covered by clouds, no current sufficient Strength from S1.R1 + open'no current from Q1 via R1 + o too weak current from A I R3 + open, no current through R3 + from Q10 The crosshead does not sink.

Too weak current from S1, R8 + open, no current from G is not shifted. The traverse remains at rest.

Case: the sun is shining. R8 + always closed.

Fig. 7a: Traverse completely outside the Ansp, no current from A I, no Current from A II, R9- closed, current from R1 + closed, current from Q1 via SWVB, MBV and R1 + s Traverse sinks. R7- open, no current from Q2, G shifts not yourself.

Fig. 7b: A pair of edges has fully reached the Ansp.

Current from A I via R3 +, R3 + closed, current from Q1 via SWVB, NBV and R3 +, traverse sinks. R7- open, no current from Q2, G is not shifted.

When the traverse sinks, the asphalt migrates to the starboard from the outside Axis of rotation DA downwards. At the same time, its width decreases. If it has become smaller than the pair width, then the downward movement stops Fig. 7c: Aspb smaller than the pair width. S3 still outside of cont.

No current from A I, current from A II, R3 + open, no current from Q1 Opened via R3 + .R9-, no current from R1 + opened, no current from Q1 via H1 + 6 traverse does not decrease anymore, R7- closed, R8 + closed, too weak = the current from S3, R6- closed, power from Q2 via R7-, R8 +, MBH and SWHB, R6-. Frame is shifted to the east.

Fig. 7d: S3 is entered in the Ansp.

A I still without power, A II supplies power, cross beam does not sink away.

Current from S3, R6- is opened. Since R5 + is also open, no current from Q2. G is no longer shifted. The traverse remains at rest. It is an optimal position reached0 Since S3 is on the inside of the upper edge of the Pbr and their Opening is slightly larger than the largest Ivb occurring in the course of a year, moreover If the Pbr has been rotated for the most favorable incidence of light, the Ivstr falls entirely in the)? br.

The asphalt on the starboard slowly moves east to pair V1V2.

There is then a short drop and an equally short shift from G to the east. When the sun is shining continuously, the following applies to the further sequence of movements the same as in the down west phase.

Switching can be done pneumatically or magnetically The changeover switch Ums (Fig. 4 and 4a) can be actuated by a time signal before the maximum distance from the plane of symmetry of the WL is reached, it switches Via relays, which have not been drawn in FIG. 4, the current sources Q1 u. Q2 off, so that the traverse and the frame remain calm = en. A second, eurz then given The time signal initiates the switchover and at the same time switches Q1 and Q2 on again the time stamps are not calculated from the profile curve of the WL and the position of the sun are determined, they can also be found in the following way in the first year of operation be: With uninterrupted sun, the down = west connection causes the traverse shortly after the Ivstr has reached its maximum westerly position, downwards and downwards Either the frame hits the western boundary first or the traverse reaches to = only its deepest given by the construction Position.Ent = neither does G operate a switch attached to a support column or the crossbeam depresses a switch on the bottom of G.

These switches, which are electrically connected in parallel = et cause that Ums is switched and that the trav = erse to the highest There she presses a switch that controls the control board starts to function and brings the floor switch back to its old position.

The traverse then sinks because the star is outside the Ansp is located. The ceiling switch switches off as soon as the crossbeam no longer presses on it. At 1200 noon local time, the downward movement must be switched to upward can be brought about by a time signal given by a clock a switch that interrupts the line to the MBV and a secondary line from Q1 to the SWVB and the motors of the SWV switches on the two ab phases were on the consoles, lifted up, contacts in the cables to the SWVB, which were closed in the morning by the weights of the AGV This means that the SWVB are separated from the iGV for the at = the auS phases ¢ Es Then two circuit diagrams apply to the control, which differ from FIGS. 4 and 4a differ only by the separation of the SWVB.

When the AGV reaches the underside of the guide carriages of the SWV you have to press in the switches located there, which interrupt the secondary lines again SWV with their accessories ui the AGV have a preponderance over the traverse and pull these up as soon as the MBV are loosened. The starboard steers in connection with the modified circuit 4a the on-east phase.

Because the sun is a mirror image of the meridian plane in the afternoon moves, the time of the maxile eastward position of the Ivstr is known from the morning can therefore be switched by a predetermined time signal.

additional explanations to the drawings.

Fig.4 mentioned on page 9 and page 15) and Fig.4a (mentioned on page 13 and further 15) show the circuit whose mode of operation is based on Fig. 5 and Fig. 7 They differ in the position of the changeover switch.

The designations previously mentioned in the description Fig.5a to FIG. 5 g correspond to the letters a to g in FIG. 5.

Through the positions a to f of the solar cells S2 and S3, as well as the photoresistor rW, all 3 of which are firmly connected to the traverse, should prevent it from sinking an initial position a, which resulted from an interruption of the solar radiation, can be illustrated in the optimal position f. like control with the help of S2, S3 and PW is only possible with the westward movement of the traverse. to make this clear, the initial position g that occurs during an easterly movement has been drawn.

Fig. 7 consists of parts a, b, c and d. When referring to them they are referred to in the text as 7a, 7b, 7c and 7d. 7 refers to the ust-hares and should use the essential positions a, b, c and d to illustrate how the control board and the traverse fixed with it in their position after a Interruption of solar radiation until the optimum position is reached the control board in its different positions are just corners 3 Photowid = purchase pairs indicated by attached small squares, underneath the pair V0 'V0 which is symmetrical to the axis of rotation of the traverse. The two others Couples are not indicated by letters.

L e r s e i t e

Claims (8)

Claims, 1) Device for catching through a duckweed canopy pre-concentrated sunlight, characterized in that the with a linkage to a rotatable traverse (Tr) firmly connected = ene prabolic trough (Pbr) by means of a Frame (G) like a crane system not only up and down =, but also there = and herbe = can be moved away. 2) Device according to claim 1'd characterized in that two over Rollers hanging on two ropes (SV) and mounted on two guide carriages (FS) Cable winches (SWV1 and SWV2) by lifting two tightening weights (AGV1 and AGV2) the traverse (Tr) can move upwards, while after placing AGV1 and AGV2 on the consoles (K) goes down when the brakes (MBV1 u. MBV2) can be loosened. 3) Device according to claim 1, characterized in that ent = speaking as under claim 2 mounted winches (SWH1u.SWH2) with their tightening weights (AGH1u.AGH2) Attack the frame (G) using pulleys and pull ropes (SH) and pull it over to you if the brakes (MBH1u.MBH2) are loosened after removing ÄGR1 and AGH2 the consoles ii. K2 can use the drive weights hGH3 and AGH4 on the other side pull the frame (G) towards you. 4) Device according to claims 1, 2 and 3, characterized in that the magnetic brakes acting on the SV and SH pulling ropes = senMBV and MBH through interruption contacts (U) the vertical and horizontal movement can be done in small steps permit. @ Claims 5) Device according to claims 1, 2, 3 and 4, characterized marked = indicates that at the bottom of the parabolic trough (Pbr) there is a transparent cooling water sleeve (KH) is located, which has solar cells on its ground, whose surface receiving the license is overflowed by slightly acidified cooling water. 6) Device according to claims 1, 2, 3 and 4, thereby marked = net that in the parabolic trough (Pbr) in the plane of the axes of their sectional parabolas a opaque partition (Trs) is attached, on both sides of which solar cells (Sz1, Sz2, Sz3, Sz4) which cause the Pbr to rotate in such a way that the cells on both sides get the same amount of light. 7) Device according to claim 1, 2, 3, 4 and 6, characterized in that that in the opening width of the Pbr a number of in the same; Distance lying Photocells (PW) are mounted, while a row of Solar cells (S2) and at the other edge of the profile of the Pbr a second row of solar cells (S3) be = find. These three groups of light-receiving elements control the vertical = and horizontal motion when the traverse goes west. 8) Device according to claim 1, 2, 3, 4 and 6, characterized in that that on the guide carriage of the traverse (Tr) at the level of its axis of rotation (DA) and vertically a control board (Etb) is attached to its longitudinal direction, on which pairs (V0'V0), (V1V2), (V3V4) ... combined photosensitive resistors are located in the second Half of the morning and the first half of the afternoon vertical movement The two resistors of a pair are electrically connected in series. All of these pairs control intermediate relays and their dependent sides the two poles of the output A I are connected. Claims 9) Device according to claim 8, but additionally characterized characterized that on the control board Stb still a second row of photosensitive Individual resistors U0, U1, U2, U3, U4, ee .. is located, each of which is an intermediate relay controls their outputs are all connected to the two poles of output A II, via that the control current is supplied to the further circuit. This is such that Vertical and horizontal displacement do not occur simultaneously and the latter stops when the solar cells S3 are illuminated sufficiently.