DE2202228B2 - Pneumatic tube post two-way traffic control - central blower action controlled by direction signals from central point - Google Patents

Abstract

Pneumatic tube post system control for two-way traffic in tube with intermediate stations and centrally mounted blower for suction or blowing effects in the two tube sectors either side of the blower station with associated travel contact. The blower is operated by two valves in its direct vicinity and another valve at the end of each tube sector, all controlled by centrally despatched signals. Depending on its allocation to one or other tube sector, each station passes regional details to a sender and receiver line and also condition details to a direction marker line. All the lines can be connected to the stations through switches provided separately for sending and receiving stations and in this way lead to a central control. Here the various line indicators are collated to form a programme signal for three possible travel variants. The programme and associated signals are obtained by tripping the central travel contact and are formed into a blower valve adjustment command.

Description

A common facility too; Supply one The running tubing of a pneumatic tube system with air comprises two fans, which are connected to the opposite one to the other Ends of the running pipe string are arranged and both work in suction or compressed air mode; only one of the two fans is switched on during a traffic flow.

But it is also already known to use only a single fan at one end of the Fahirohrstrands and using appropriate valve devices to generate either suction or compressed air. These Arrangement in which, compared to the one described above, a fan is replaced by two valves to be regarded as economically more favorable.

The invention is based on the object of a circuit arrangement for controlling a pneumatic tube system with several intermediate stations arranged in the course of a driving tube used in turning operation and to create a fan connected in the middle area of the Fahrrokres, to the Generation of suction and compressed air in both sides of the place provided with a driving contact two valves directly and one more at the end of the tube areas of the blower connection of the two driving tube areas are assigned, the control commands for all valves in a central Control device derived from the intermediate stations and the actuation of the travel contact Signals are obtained.

Such an arrangement of the fan and the valves leads to a higher efficiency of the Air supply, since the airways are significantly shortened compared to the pneumatic tube systems mentioned above and thus greater pressure reduction losses are avoided. In this system, the fan is optionally opened by means of the two fan valves Suction or Drui divide switched, with the air flows in or out at one of the two tube valves arranged at the end of the tube areas. This switchover from suction to compressed air can also take place during the sales process, in which pneumatic tube rifles from a pneumatic tube station of one driving tube area into one of the other travel tube area can be transported.

The circuit arrangement for controlling the pneumatic tube system outlined above is according to the invention realized in that the stations depending on their affiliation to one of the two driving tube areas area-specific markings on a transmitter marker and a receiver marker line as well as

Send location-specific markings to a direction marking line, all of which are transmitted by or receiving station-specific switching means can be connected to the respective stations and to which central control device lead, in the one hand the markings of the marking lines together to form one of three different traffic flows corresponding program signals and on the other hand the program signals, the receiver and the direction marker identifications as well as one characterizing a traffic flow within one of the two Fahnohr areas Program signal or the signal obtained by actuating the central travel contact derived control command for the blower valves linked to the Stcllbcfehlen for the two travel pipe valves will.

As essential for the invention is to be seen that all to control the four valves of the Pneumatic tube system provided the necessary information via three lines in the form of markings that are area-specific with respect to the receiver and the transmitter marking line and the Directional marking lines are location-specific. Under this it is to be adjusted that all pneumatic tube stations of the a tube area each a specific for all pneumatic tube stations the same identifier to the Deliver lines that are different from the corresponding license plates of the other driving area is. In particular, the identification of one driving tube area can be created by applying of potential that occurs in the other tube area due to the lack of this potential. For the In practice, it is to be seen as advantageous to equip all pneumatic tube stations with a prepared Schaltstcg for connection to a potential terminal or to a contact leading to this potential terminal to provide; when assembling the whole !! Plant is then depending on the affiliation of the appropriate Station to one of the two tube areas of the switching bridge by means of a conductive connection galvanically closed or remains unconnected.

In contrast, according to an advantageous development of the invention, the direction marking line Gate circuits looped in such that to the central control device in the event that the The sending station is in front of the receiving station, taking into account a defined sequence, another Signal is emitted as if the positional relationships of these two stations are reversed. Preferably the signaling is also carried out in binary form in this case, so that in one case a signal, im others, on the other hand, no signal is given.

As a particularly advantageous implementation of the direction marking line In this context, a gate chain turns out, whose individual chain elements, are each station-specific and within this station both from a receiving and can also be controlled by a transmission switching means. One in terms of the complexity of the circuitry A favorable implementation of such a chain of gates provides an OR and an AND gate for each station, the AND gate having a negated input connected to the transmission switching means of the station and has a normal input connected to the output of the OR gate belonging to the same station connected; its two inputs, however, are with the receiving switching means or with connected to the output of the AND gate of the following station. The AND gate of a transmitting station thus delivers to the input of the OR gate in the direction of the central control device towards the nearest station no signal due to the negated input and therefore because of the missing Signaling for the normal input of the AND gate also no signal for the OR gate of the following Pneumatic tube stations so that a signal from

ίο the direction marking line to the central control device is only issued if in one of the central control device is closer Pneumatic tube stations the other input of the respective OR gate through an activated receiving switch is affected, d. i.e. if a pneumatic tube station is located in front of the sending station in the selected order Receiving station is. In the reverse Betnet-JaII on the other hand, there is no signal to the central Sv. ! facility handed over.

With the - preferably static - signals obtained on the corresponding lines can now use the two tube valves and the two blower valves in the sense of six possible Traffic processes are controlled. There are two traffic flows, each in compressed air operation and two further traffic flows each in suction air mode within one of the two driving tube areas, while the two remaining traffic flows taking into account the two possible Driving directions are given by the traffic from one driving tube area to the other.

The individual control processes are expediently carried out within the circuit arrangement according to the invention made dependent on despatch requests within the individual pneumatic tube stations. These sending requests can, for example, through Preparatory contacts are transmitted through pneumatic tube carriers in the pneumatic tube station ready for dispatch are operated directly.

According to an advantageous development of the invention, the stations have identification switching means, each representing a link in a chain circuit that encompasses all the stations. As an advantageous Means for controlling this chain circuit turns out to be a clock that expediently is integrated into the central control device and the derailleur clocks for so long, 'is a passing impulse has reached the chain link belonging to a pneumatic tube station that is ready for dispatch

is. The chain circuit expediently has a concurrent zero point, since it is based on this In this way, a preference for the stations located first in the chain can be prevented.

After identification of a pneumatic tube station that is ready for dispatch, the control tube valves and the blower valves also target recognition and the associated preparation the receiving station. An advantageous development of the invention provides in this context before that after the identification of the pneumatic post station ready for dispatch a control command füi a target recognition device assigned to the pneumatic tube system is delivered. This control command can, for example, from the output of an AND

Gate, whose two inputs are connected to the transmission switching means (preparatory contact) or a setting output of the identification switching means of the relevant station are connected.

The target recognition is in itself independent of the control of the valves of the pneumatic tube system, however is particularly advantageous to combine the circuit arrangement according to the invention with a target recognition device in which the target information is not static or in form of pulse trains are transferred to a central target control, but rather a static one Target display and transmission is carried out via lines that looped through all stations are.

The use of a known target recognition device with a two-dimensional coordinate field is particularly advantageous in this context view, whose row and column lines can be controlled via manually operated switch buttons and the station-individual receiving switching means are arranged in its intersection points. The receiving switching means are with switching magnets linked by mechanical switches, the incoming pneumatic tube carriers from the turning operation Allow the driven-on pipe run to be ejected.

The respectively activated receiving switching means of a selected receiving station can also be advantageous Way to initiate certain Steuervorgänn.c or to switch caesuras within running control processes are exploited. For example, it is conceivable to derive a switch-on command for the fan and the derivation of a switch-off command for the clock generator. Possible is also the derivation of subsequent signals from signals derived in this way; for example, from the Eiiischbcfriil for the fan a setting error for a holding device can be obtained, which up to this point in time has a senderbercite pneumatic tube and after being influenced by the switch-on command! the pneumatic tube for your transport to the selected and ready-to-receive receiving station releases.

A functionally advantageous embodiment of the invention provides driving contacts known per se in the switch area before. which can be prepared by the station-specific receiving switching means and when actuated be influenced by an incoming pneumatic tube carrier; let out of this influence further control signals, for example to reset the central control device to an initial position and to restart the clock.

In a known pneumatic tube system with several intermediate stations arranged in the course of a travel tube and a fan connected in the middle area of the driving tube are used as Deflection devices are used within the stations, the points with their main connection in both tube areas are each directed to the fan connection, while the two branch connections in the continuous tube or in a storage section belonging to the station merge. In a pneumatic tube system of this type, traffic flows can also occur that are controlled by the traffic flows described so far are different. These are operating cases in which a pneumatic tube from a pneumatic tube station of a driving tube area to a blower connection closer pneumatic tube station of the same tube area. The pneumatic tube carrier must When arriving at the receiving station, first pass the switch, then the switch must and the drive direction of the blower air can be switched, whereupon the pneumatic tube can through the The switch enters the storage section.

For such pneumatic tube systems, an advantageous development of the invention provides that the central Control device a central switch switching device connected to the switching magnets of all switches has, which in the operational cases described above, a control command for switching the receiving switch only after it has been driven over for the first time by an incoming pneumatic tube gives away. A mandatory requirement for this is of course the provision of a driving contact in the immediate turnout area, this driving contact at the same time the tasks described above the station-specific reception contacts can take over.

so because influencing such a driving contact can only be briefly in the switch area due to the rapid passing of the pneumatic tube carrier, If a memory device is provided in the central control device, the short-term influencing which converts travel contacts into corresponding continuous signals.

In order to enable the fan air to be reversed after the first crossing of the receiving switch, is according to a further embodiment of the invention of the actuation of the switches or whose drive magnets each derive a signal that is linked to the program signal! characterized by crossing a switch twice, one on the blower valves effective AND link is summarized.

Then there are two additional sales processes possible if the pneumatic tube stations not only connect the pneumatic tube carriers via switches and

4a received closed storage paths, but the Pneumatic tube carriers can also be entered into these storage facilities for sending. First must in such a case, of course, an opening at the end of the storage section - in particular one through a valve to be influenced optionally - be provided in the initial phase of the traffic flow, in which the pneumatic tube carrier is transported from the storage section into the actual travel pipe string, must be open, while the two tube valves must be closed during this time. Here can solve the problem of crossing a switch twice either at the location of the transmitting station or that of the receiving station.

The invention is explained below using an exemplary embodiment that consists of a pneumatic tube system with two stations for each tube area. In the

F i g. 1 such a pneumatic tube system is shown schematically with all important details;

F i g. 2 to 9 all contain details of a circuit arrangement for controlling the pneumatic tube system according to FIG. 1, wherein in the

F i g. 2 to 4 show the individual station facilities of the circuit arrangement;

F i g. 5 shows the actual control of the blower valves and the travel pipe valves and in the

F i g. 6 to 9 details of the central control device are shown.

9 10

The pneumatic tube system shown in FIG. 1 is switched off and accordingly a command for the keeps the two pipe release magnets (for example FM1) prepared in the first travel tube area FI.
post stations RSl and RSl as well as in the second driving The exits Ά ' to ' T lead to the pneumatic post stations RS 3 and F i g in the pipe area FII. 3 target detection system shown at each RSA. All pneumatic tube stations RSX to RSA 5 of the station RSi to RS4 hold a holding device HVX to HV 4 using the two letters. using TA and TB as well as the two numeric keys of the pneumatic tube carriers to be sent up to 71 and 72 each enables one of the tubes to be controlled by a central control device, post stations RS 1 to RS4 . The release buttons are saved. The pneumatic tube stations JA, TB; 71, 72 are in each case with the corresponding RS2 and RS3 also each contain a Wciio speaking the same name lines z «, z //, zl and before Wl and W3, which are connected in the sense of the optional from _Z 2, see above that a two-dimensional Koschleusens or driving through the pneumatic tube can ordinatenfcld occurs, the columns of which the two are controllable. The pneumatic tube stations RS 1 and RSA lines za and zb and the lines of which the line unneeded due to their peripheral location are no switches, towards z \ and zl .

but only include arcs j in memory 15 according to _e Tastenstcllung at the output '4' to T

pipe sections merge. Each pneumatic tube station RSl of the AND gate U 1/2 to UAIl output potential

bis RSA is also a driving station in the switch area. RSX to RS4 becomes one of the

contact jkl to fkA assigned, which is controlled via not three other pneumatic tube stations in such a way that

Provided supply lines with a likewise not shown the corresponding station-specific AND gate

placed central control device is connected; the 20 (71/4 to [/ 4/4 is activated. To prevent

The same applies to one on the blower connection that the operator of a pneumatic tube station has the

Neten central travel contact jkz. selects your own station and thus the traffic

The fan G assigned to the driving tube F interferes with the flow of the entire system, on the one hand the fan directly assigned to it is negated input of the AND gate i / 1/4 to UA / A valves Vs and Vb as well as the two each at end 25 provided, which is also connected to the output ¹ A ' to one of the two driving tube areas FI, FII angeord-' 7 'of the AND gate UXIl to UAIl . Neten tube valves KI, KII open. These valves Ausgänge'8'bis'11'bilden the same time the Einkönnen via a central control means GC _ga ng "shown are for the ^ in FIG. 4 memory Controls that m each of the two stages Fahrrohr-", each by two reversing stages NXIX. areas FI and FII both suction and pressure 30 N 1/2 to / V4 / 1, NAH are formed, whose negated air operation is enabled. Outputs at the same time the input of the adjacent

In the F1 g. 2 to 9 represent a reversing stage that is hard on the pneumatic tube system. The output of the circuit arrangement according to FIG. the lines that extend over several EA, the contacts of which extend significant additional control figures, are influenced by corresponding number inputs
have been assigned to others. 'For example, contacts 2el and

2 essentially shows ground potentials 2r2 on the receiver marking line, which are connected at least indirectly to the Ab- EM , since the pneumatic tube stations RS1 and the sending of pneumatic tube boxes are connected. Thus, RS 2 are each a suitably prepared galvanically, the four pneumatic tube stations RSX to RS4, the 40 conductive bridge In or In aufweisen- in the symbolic from each other by dashed lines pneumatic tube stations RS3 and RSA is being a are each separated a release magnet FM X _so l _che bridge not provided, so that upon excitation up to FM4 , who is ready to send. Pneumatic tube of the receiving relay £ 3 or E4 (Fig 4) the receiving sockets in the holding device (pFg_l) arrester marker line EM remains floating,
animals. Each release magnet FM'X to FM 4 is connected to the line '12' ground potential via a further contact 1 el. driven, one input, one of the cen- that in the central control device (Fig. 8) via spectral control means ago (Fi _gj 8) with a start wear and is provided therefrom to a blocking pulse for the clock signal, while the second input of encoder TG is converted

fLn ⁿ r ^ ^Sga ? / ^g , / i ⁿ K ^S Tiff " ^stati , °. ^nsindividual 5 ° The same contact IeI to Ie4 also serves zui

^ ⁰ *** " ¹ ' ^{2 ta} * ™ ² * ΤΛΪ ^ ^1St · · Influence the station-specific OR gate,

These AND gates t / 1/2 to 1/4/2 become a Kl / 1 to K4 / 1, each of which is part of a station indivisens via a gate circuit via the pneumatic tube sockets "to the preparatory contacts v / cl bis actuated individually by the station In addition to one of the OR vkA and on the other hand, via station-specific tilting gates Kl / 1 to K4 / 1, an AND gate level Kl to KA is controlled, each of the stocks U1 / 3 to Γ74 / 3, with the entirety the gates zi part of all the pneumatic tube stations RSl to RSA environmentally an all pneumatic tube stations RSl to RSA gefassenden derailleur shown. In case of a dragged Richtungsmarkierleitung RM together Absendewunsches (actuated preparing contact is taken. the second einsang the OR Gattei VKI to MCA) is an incentive line '2' 60 viii _{to vm is DABD; ew} ⁶ _{ei] s} ⁶ _{to the a, Jseang de} central control device so influenced that led AND gate i / 2/3 to UA / 3 system. (Fig. 8) whose b eide a central clock generator TG (F i g. 8) via a control input, on the one hand, through the output of the associated line 3, the flip-flops Kl to KA with the assistance of station-specific OR gates K2 / 1 linking the AND gate Ul | clocks K4 / 1 and on the other hand through the outputs Ά ' to' 7

If the one (e.g. Kl) of the flip-flops Kl to 65 of the AND gates Ulli to UAIl (Fig. 2) is formed

Jf 4 activates those in the station (e.g. ^ RS2) with the, whereby the latter inputs are negated

activated preparatory contact (e.g. vk 1) is carried out in this way

The AND gate in question (e.g. Ulli) is

It is sufficient that for all operational cases in which the transmitting station is behind the receiving station as seen from the central control device, earth potential is connected to the direction marker line RM , while in the opposite operational cases no earth potential is present at the output RM .

The third of the marker lines, the transmitter marker line SM, is wired analogously to the receiver marker line EM in such a way that the two pneumatic tube stations RS1 and RS2 belonging to the first tube area FI (Fig. 1) each have electrically conductive bridges Bsi and Bsi for potential switching, while in the pneumatic tube stations RS 3 and RS4 no such bridges are provided. The connection potential for the transmitter marking line SM is supplied by the outputs '4' to '7' of the AND gates U 1/2 to U4 / 2 (FIG. 2).

In the ^ ¹ ig. 4, the station individual driving contacts are in addition to the "memory stages" and connected to it receiving relay El to £ 4 n-jch shown, each having a photoelectric resistance Fl to F4 and a lamp Ll to L4, which together form a common light barrier; the preparation of the light barriers Fl, Ll to F4, L4 takes place via the contacts 3el, 4el to 3e4, 4e4 of the receiving relays El to E4. When one of the light barriers F 1, L 1 to F4, L.4 is activated, a signal is sent to the central control device (FIG. 9).

The Figure 4 still leaves the need for middle pneumatic tube stations RSI and RS 3 course Magnets WM 2 and WM3 realize the E3 are preparable also through contacts 5e2 or 5e3 the receiving relay or El; the actual connection takes place via the contact of the central control device.

For those operating cases in which pneumatic tube carriers use the Wl. W3 (Fig. I) of the pneumatic tube station RSl or RS3 first run over and then after reversing the switch Wl, W 3 and the air direction by the same way into a storage pipe section, the switching of the switch magnets WM 2 and WM 3 via contacts M > m 2 or MW 3 are used to form a control command which is sent to the central control device (FIG. 7) via line '13'.

Via the output of the OR gate Vl , the central control device delivers a control command at the point in time at which the actual reception process is completed; so that the respectively energized end-of-flight relay El to £ 4 is de-energized again (inputs * 14 'and' 15 'of the OR gate V1: see FIGS. 8 and 9).

In FIG. 5 are the valve magnets VMl, VMIl or VMs, VMb influencing the Fahrrohrvent'Ie or the fan valves directly assigned to the fan, as well as their connection through the contacts vrl, vrll or vrs, vrb correspondingly in the central control device (FIG. 7 ) provided valve relay is shown.

The F i g. 5 also shows the central light barrier located in the area of the fan connection, which consists of the photoresistor Fz and the lamp Lz and via the contacts Igr, Igr of a fan relay influencing a fan connection Her central control device (Fig. 8) in a circuit with the amplifier Vst 2 and the light barrier Lnrelais LRl is inserted.

The central control device - as shown in FIG. 6 to 9 is described - is essentially described in FIG. 6 included three marking lines EM, RM and SM controlled. From the receiver marker line EM wildly via the negator N 3 and from the direction marker line RM via the inverter N4, in each case the inversion ('he obtained signals from the two marker lines EM, RM . The transmitter marker line SM

ίο, however, leads to an input of the OR gate. < Vl, whose output also forms an input of an AND gate U3 ; the output of the AND gate V3 is led to the input of a further AND gate U 4 , the second input of which can be connected to ground potential via the contact 3gr of the fan relay (FIG. 8). The output of the AND gate U 4 also forms a further input of the OR gate Vl; the entirety of the three gates V1, U3 and U4 represents a memory circuit which is able to convert a signal that is only briefly present on the transmitter marker line SM into a permanent signal corresponding to fin. This continuous signal is reversed via the inverter / VS, so that a total of six signals can be tapped from the three marking lines EM, RM and SM and from the outputs of the three inverters / V 3, / V 4 and / VS, three of which are the Form inputs of one of the AND gates i / 5 to UlO. The outputs of two AND gates are combined via an OR gate V 3, V4 and FS to form the three program points Pl ('16'), Pl ('17') and P3 ('18') a program signal is present when one of the programs predetermined by the corresponding AND gates

is present.

In the following, the conditions for the presence of the program signals are set out in circuit algebraic form, with the line designation in small letters selected for the program signals and the signals applied to the marking lines EM, RM and SM as well as to the inverters N3, N4 and NS has been.

pi = (efn & 7m & Jm) V (em & rm & sm)

ρ 2 = (rm & sm) V (Tm & sm)

ρ 3 = (em & Tm & sm) V (em 8c rm Sc sm)

The program signal pl is therefore always present when a pneumatic tube carrier travels from one tube area to the other. However, the program signal pl appears when a pipe Posi liner within one of the two driving tube portions is conveyed, wherein the conveying direction runs in each case from the blower port in the direction of the respective end of the corresponding transmission-tube portion; a compound of pl responsible for the program signal AND gate t / 6 and t / 9 with the Empfängermarkierleitung EM and to the output of the inverter N3 does not need to take place, since such a circuit would be a match (s. the schaltungsalgebraischen equations for the program signals pl, ρ 2 and ρ 3). The program signal ρ 3 is generated in those cases in which the pneumatic tube carriers are also only within one of the two Fnhrrnhrhpr / ^ ΐκ »

is conveyed, but its conveying direction is the opposite of the conveying direction responsible for the program signal pl.

The latter two program signals pl and ρ2 < are each connected to an input of a further OR gate V 6, the output of which is in turn connected to an input of a further AND gate t / 11 and Uli . The other input of the AND gate i / 11 and Uli with respect to the AND gate i / 11 with the Empfängermarkierleitung EM and connected to the AND gate U 12 with the negation of the signal present on the Empfängermarkierleitung EM signal carrying line EM respect. This results in a meaningful combination of the two program points P1 and P 3, since both program points relate to traffic processes within a driving tube area.

The outputs of the two AND gates Uli and U 12 run via lines '19' and '22' to one of two each - in FIG. 7 - OR gates V 7 and! '8. the first of which is connected to the outputs of the AND gates U 13 and / 714 and the second to the outputs of the AND gates L'15 and U 16.

The AND gates U 13 to U 16 each have three i; Entrances on. one of which is connected to the program point P1 ('16'). A second input is with the AND gates Ul ¹ - and UlS with the direction> marking line RM ('20') and with the AND gates' / 14 and t / 16 with the negation of the signal on the direction marking line RM leading Line RM ('1V) connected. A third input of the AND gates U 13 and t / 16 is connected to the output of an inverter circuit / V 6. A third input of the other two AND gates 1/14:! 5 and U15, however, with the Output of the inverter circuit Λ'7 connected, the two inverter circuits / V6 and Nl in the sense of a »memory stage: are interconnected. One of the two inputs of the inverter circuits / V6 and Λ'7 is formed by the negated outputs of the other inverter run. The second input of the generator stage / V6 is formed by the output '23' of the generator stage N 1 (FIG. 8), which has an input connected to the line '12' (FIG.?) So +5. that there is always no signal at the negated output when one of the contacts of the Fimpfangsrelais Kl to E4 is closed. The second input '23' of the inverter circuit / V6 is then always floating. if none of the four pneumatic tube stations RS 1 to RS4 is ready to receive. At these times, a signal is present at the output of the inverter stage / V6; accordingly, the output of the Ncgalor circuit Nl carries no signal.

The output of the Ncgatorstufe Λ'6 forms an input of the AND gate U 18. while the output of the inverter circuit Λ'7 is also an input of the AND gate L / 19; the second inputs of the two AND gates i / 18 and i / 19 are gcbil- <ie> det through a ground potential terminal, which can be connected to the two inputs via the contact 4gr of the fan relay GR (Fig. 8). So if there is a signal at the output of the inverter circuit N 6 and the Gebläserclais GR is energized, then this is also at the output de :; AND gate L / 18 connected Vcntilrelais VRb energized, and the fan blows air into one of the two driving tube areas; when a signal is present at the output of the inverter circuit Nl , on the other hand, the valve relay VRs is energized, so that air is sucked in from one of the two driving tube areas.

The second input of the inverter circuit N1 is ruled out to the output of the OR gate V9 ; this OR gate V 9 has three inputs which are connected to the program point Pl, to a ground potential applying contact IrI of the light barrier relay LRl and to the output of a further AND gate Uli . This AND gate U 17 in turn has two inputs, one of which is connected to the program point P 3 and the other to the line '13', which are connected to the station-specific contacts (FIG. 4) of the weight magnets WM1 and WM3 whose excitation leads to the application of earth potential to the line Ί3 '.

Since the program point Pl always carries the program signal pl when there is compressed air operation in one of the two driving tube areas, a signal appears in such cases at the input of the inverter circuit Λ'7, which occurs in negated form at the output and thus becomes a signal at the output Negator stage Λ ^; 6 leads, whereupon d: is the valve relay VRb assigned to the blower valve to be used for the generation of compressed air is energized.

The same valve relay VRb is also excited when the central light barrier Fz. Lz (Fig. 5) is passed, since in such a case it is always necessary to switch from suction to compressed air. The valve relay I Rh is also excited when the program point P 3 carries a signal (the program signal μ3 is always present when suction air operation prevails within one of the two travel tube areas). Since the switches Wl and W3 belonging to the stations RS2 ιιικΐ RS3 (Fig. Π '- must be passed twice in such a conveying process, after influencing the .station-specific light barrier (for example FZ, Ll: Fig. 4), an excitation of the light barrier relay LR 1 and thus, in a manner to be described later, the excitation of a turnout switch-on relay, which via the contact we (Fig. 4) for excitation of the corresponding \ Ve ^; chenmagneten WMl, WM 3i and for the application of earth potential to the input '13' of the AND -Gatters t / 17. This also switches over to compressed air so that the pneumatic tube carrier accelerates in the opposite direction and can enter the receiving station RS1, RS3 through the switch W1, W3, which has meanwhile been converted.

In the following, the switching condition for the AND gates (/ 13 to U16 is shown in circuit algebraic notation), whereby the control command pending at the output of the inverter circuit Λ'6 is denoted by "sb" , while the output signals of the AND gates UH to i / 16 can be designated with «13 to« 16.

w 13 = rm & pi & sb
η 14 = rm & pl & sb ~ u 15 = rm & pl & JE u 16 == rm & pl & sb

The output signals ν 7 and ν 8 of the OR gates Vl and V 8, which are sent directly to the

ΙΌ

valves assigned to the valve relays VR I and VR II can be displayed as follows:

ν7 = [em & (p2Vp3)] V [«13V« 14] v8 = [em & (j} 2Vp3) \ V [wl5V «16]

Via the AND gates U13 to i / 16 on the one hand and chend selected delay time there is a signal at the output '14', which on the one hand via the OR gate Vl (Fig. 4) to de-energize the receiving relays El to E 4 and on the other hand leads to an initially still ongoing narrowing of the fan relay GR via the inverter stage Nl (FIG. 8). After the pulse emitted by the monostable multivibrator MK 3 has decayed, the output of the inverter stage Nl (FIG. 8) carries a signal again, so that

t / 17 to i / 19, on the other hand, there is a pro- _J0 when there is another ready-to-send, program-compatible control of both the travel tube bushing within one of the pneumatic post stations RSl valves Vl, KII and the blower valves Ki, Vb
(Fig. I) · The so far not mentioned scarf

processing elements of Fig. 8 are based on one after

to RS4 due to the corresponding influencing of the preparatory contacts vk 1 to vjfc4 (Fig. 2) , restarting the clock TG (Fig. "; Explanation 15 follows the description of Fig. 9. At the same time, the monostable multivibrator MK1 of a traffic flow is described. bumped into the other entrance via her

In Fig. 9, the switching of the OR gate Kl (Fig. 4) connected elements are shown, which prevents the control of the switch output that one of the receiving relays magnets WMl and WM3 (Fig. 4) of the pneumatic tube EX until EA responds within the period in which RS2 and RS3 relate to. The control 20 by which the connected gate and the fan takes place via the contact WE (Fig. 4) of the relay WEI GR and the Weicheneinschaltrelais WE which is connected directly to the output of the OR gate loo still cheneinschaltreiais WE. That
OR gate KlO has three inputs, from
which two with the program items Pl and P 2 25
('16' and '17') are identical while the third is on
the output of the AND gate (720 connected
UG U 0

is The AND gate U 20 has two inputs. one of which is connected to a "memory stage" formed by the two inverter stages / V 8 and / V 9, while the other is connected to the output of the OR gate KIl, one input of which is the feedback of the output of the AND gate U 20 represents, while the other input d Lihhkli have not returned to their rest position.

The following describes the functions of the individual switching elements and, in particular, their interaction can be described on the basis of two traffic processes.

The first traffic sequence provides for the sending of a pneumatic tube carrier from the pneumatic tube station RS2 to the pneumatic tube station RS3 . At the pneumatic tube station RS2 , the target identifier 'DV belonging to the pneumatic tube station RS3 is first set with the key switches TB and T \ . After the pneumatic tube carrier has been thrown into the holding device in which the pneumatic tube carrier is inserted by means of the FM 2

with the 35 associated with the light barrier relay LRl is held, the preparation contact vkl

Contact IrI is connected, which is with its rest side on earth potential. The »memory stage«, consisting of the inverter stages / V8 and N9 , is used to convert the impulse generated by the brief influence of the light barrier relay LR 1 into a permanent identifier. While - as already described above - with such a »memory.stuf .- <the negated output is fed to an output of the other inverter stage - the second input of the inverter stage / V8 is connected to contact 4gr via line '24' (Fig. 7) connected in such a way that this input only carries a signal when the associated fan relay GR (Fig. 8) is not energized. The second input of Negatorstufe N9 is on the other hand λ η AND gate (connected to the 721 output which has in turn two inputs. In this case is the one input with the contact IrI of Lichtschrankenrclais LR 1 so connected that it short-term only at the moment It is assumed in the previous example that no further pneumatic tube carriers are waiting to be sent at the other stations, so that no signal is present at any input of the inverter stage Nl (Fig. 8). The signal present at the output of the inverter stage / V1 opens because: ; AND gate Ul, which is activated at the other input by the preparatory contact vk2 and thus starts the clock generator TG , which clocks the chain circuit consisting of the flip-flops Kl to K 4 via the L (iung '3'. When the cyclic clock pulse the Has reached flip-flop Kl , the AND gate Ulli already prepared via the preparatory contact vkl is switched through

5 "AND gate Ulli is present, the AND gate i / 3/4 (Fig. 3) is switched through via the pressed target keys TH and Tl , whereupon the» memory stage consisting of the inverter stages Λ'3 / l and / V3 / 2 «The receiving relay £ 3 is activated.

influence of one of the ward-specific lights 55 hay of contact 1 c3 of receiving relay E3 is barriers receives a signal; the other input is Lrdpotential at the input of the inverter stage

/ Vl (Fig. 8) leading line '12 '(Fig. 3), so that the signal change at the output of the inverter stage Ni leads to the excitation of the fan relay GR via the inverter stage Nl and to the shutdown of the clock TG via the AND gate Ul ; The fan connection GA is started via the contact f> gr of the fan relay GR.

Via the contacts 3e3 and 4 <* 3 the from the

gang of the OR gate KlO is connected. In the 6 ₅ photoresist F3 and the lamp L3 existing element of the influencing of a station-individual light barrier switched on, the initially no loading light barrier thus a signal is given to the surround of the central evaluation relay LR 1 hermonostable multivibrator MK3; during a corresponding pre-calls (Fig. 4).

509 512 / 21.T

led to program point P3 ('18'), which is characteristic of those traffic processes in which it is necessary to drive over a station-specific switch twice,

The short-term influence of the light barrier relay LR 1 leads via the contact IrI to a signal to an input of another AND gate i / 22, the second input of which is connected to the output

Since the transmitting station RS 2 is in the first operating tube portion and, accordingly, (g F i. 3) via the bridge at the Sendermarkierleitung SM is connected, is located on the Sendermarkierleitung SM to the 2/2 switched through ground potential through the AND gate U as a signal. Since the receiving station RS 3 belongs to the second driving tube area, it lacks the galvanic connection to the receiver marking line EM. so that there is no signal potential on this.

The signal conditions on the direction marker line RM are determined by the switching signal of the AND gate t / 2/2 of the transmitting station RS2 and the contact Ie3 of the receiving relay £ 3 of the receiving station RS3 . This contact, together with the negated input of the AND gate t / 3/3, which has no input signal, causes an input signal for the OR gate V 2/1 of the transmitting station RSl, which, however, due to the presence of a pass-through signal at the output of the AND gate U2 / 2 no signal at the output "of the AND gate U 2/3 and thus also no output signal at the output of the AND gate t / 1/3 can cause.

Accordingly, a signal is only present on the transmitter marking line SM , while the receiver marking line EM and the direction marking line RM do not have such a signal.

The signal potential thus applied to the lines EM, RM and SM switches the AND gate V 5 (FIG. 6) through and causes the program signal ρ 1 to be output to the program point P 1 via the OR gate V 3 Program points Pl and P3 are no signals and, moreover, the central light barrier is not affected, the OR gate V 9 (Fig. 7) has no input signal, so that the following inverter stage / V7 at its output 37J the control command JB to the AND gate U 19 and, taking into account the switched contact 4gr, also outputs to the valve relay VRs of the blower valve Vs.

The control command JB is also at the input of the AND gate U14, the other two inputs of which are connected to the line RM ('21') and the program point fl ('16'). The AND gate t / 14 lswitches on the travel pipe valve VR I via the downstream OR gate V 7, so that the via the AND gate t / 2/2 (FIG. 2) and the release magnets • en FMl in the Driving tube area FI (Fig. 1) • inserted pneumatic tube is conveyed in the direction of the glass connection.

At this point in time the turnout switch-on relay WE (Fig. 9) is switched through via the OR gate I ⁷ IO, one input of which is connected to the program point # Ί ('16'), so that the turnout magnet WMi (Fig . 4), which is already prepared via the contact 5e3, is excited by means of the contact • Cs we and thus switches the receiving switch Wi of the pneumatic tube station RSi (Fig. 1). As soon as the pneumatic tube carrier passes the central light barrier Lz, Fz on its way to the receiving station RS3 (FIG. 1), the light barrier relay LR 2 is excited via the two contacts \ gr and 2gr, like the amplifier VSI (FIG. 5). This excitation leads to the application of signal potential via the contact Ir2 (FIG. 7) to one of the inputs of the OR gate V9, so that the signal ratios on the control command lines SH and 5Z7 are reversed; the valve relay VRs is thus switched off and the valve relay VRb is switched on for this. At the same time the connection of the AND gate t / 14 ends and is replaced by the connection of the AND gate 16, which is also connected to the line R ~ M and to the program point PI , but with its third input to the output of the inverter stage N6 is connected, which now carries the output signal sb. The switching of the AND gate t / 16 leads to the excitation of the valve relay VaII _{1 sc so} that the pneumatic tube can be conveyed to the receiver station RS 3 by means of compressed air after passing the central light barrier Lz, Fz .

When the receiving station RS 3 is reached, the light barrier L3, F3 of this station is darkened, whereupon the light barrier relay LR1 is excited via the amplifier Vst 1 (FIG. 4). The brief influencing of the corresponding contact IrI (Fig. 9) leads to the switching of the AND gate U22 and thus to the delivery of a Martimpulse to the monostable multivibrator MK 3, which via its output; '14' acts on the input of the OR gate Vl "(FTg. 4) and the input of the inverter stage / Vl (Fi 2. 8). The pulse switched through via the OR gate Vl leads to the de-excitation of the receiving relay £ 3 of the receiving station RS 3, whereupon the light barrier L 3, F3 and the turnout magnet li ', V / 3 of this station RS3 are switched back to the starting position via the corresponding contacts at the output of Negatorstufe / Vl (Fig. 8) again a signal which leads to the excitation of the fan relay GR and hence to switch off the blower. All the through-connected gates are closed again, so that also the Weicheneinschaltrelais WE (Fig. 9) is again deenergized and the valve relays VR] and VRb (Fig. 7) are de-energized again.

The conveying processes run in an analogous manner, in which pneumatic tube carriers are conveyed from a station in the second driving tube area FII to a station in the first driving tube area FI; Even the pure compressed air operation within one of the two travel tube areas FI and FII is already implicitly described by the above example of a certain traffic avalanche, since here only the reversal after passing the central light barrier Lz, Fz is omitted.

In the following, the combined suction and compressed air operation within a travel tube area will be described using a conveying sequence from the pneumatic tube station RSl to the pneumatic tube station RSl.

The identification of the ready-to-send station and the activation of the receiving relay £ 2 via the destination selection take place in the manner already described for the above conveying process. Since both the transmitting and receiving stations are in the driving tube area FI, the transmitting marking line SM and the receiving marking line EM each carry signal potential, while the direction marking line RM has no marking potential, so that the output of the inverter stage / V4 (Fig. 6) - i.e. the line RM - signal potential leads. Accordingly, the AND gate t / 10 is switched on and applies the program signal ρ 3 to the program point P3 via the OR gate V 5. One input of AND gate 1/17 (Fig. 7) is prepared via line '18', the other input

Input '13' is connected to the contacts wml and hto3 of the switch magnets WMl and WM 3 (Fig. 4).

Since the output of the AND gate Uli still carries a signal, the OR gate V 9 also initially has no input signal because the other input lines - which are connected to the contact IrI of the light barrier relay LRl and to the program point Pl - also have no signal potential exhibit. At the output JE of the inverter ίο stages .V7 there is a signal which leads to the switching on of the valve relay VRs .

The program signal pi leads via the OR gate V6 (FIG. 6) to the switching through of the AND gate Uli, which receives signal potential from the receiver marking line EM at its other input; Via the output '19' of the AND gate U 11, the OR gate Vl is switched through and the downstream valve relay VRl is energized.

The pneumatic tube carrier released by the release magnet FM I (FIG. 2) therefore moves under the influence of the suction air flowing through the valves V1 and Vs from the pneumatic tube station RS \ to the pneumatic tube station RSl. As soon as the pneumatic tube carrier has arrived at the pneumatic tube station RSl, the light barrier Ll, Fl is influenced and thus the light barrier relay LR 1 is excited (FIG. 4).

This excitation leads via the contact Ir I (Fig. 9) to a connection of the AND gate Uli, which is already preparing the program signal ρ 3 ^: st. The "memory stage" consisting of the inverter stages N 8 and N 9, which has an input connected to the output of the AND gate Uli , is then reversed and switches the AND gate U 20 through after LR1 has dropped. This switching leads to an excitation of the switch switch-on relay WE via the OR gate KlO.

The switch magnet WMl is then excited via the contact we (FIG. 4) and ground potential is applied to the line '13' via its contact m '/; i2, which forms an input of the AND gate Uli already prepared via the program signal ρ 3. The switching through of the AND gate U 17 results in an input signal for the OR gate V 9 and thus reverses the other "memory stage" (FIG. 7) consisting of the inverter stages Λ'ό and / V7. The output JH is thus signal-free , while the output SL of the inverter stage Λ'6 carries a signal that leads via the AND gate 1/18 to the reversal of the valve relay VRb.This reverses the direction of flow of the blower air and conveys the pneumatic tube canister that has meanwhile passed the pneumatic post station RSl this back, where it is discharged through the switched switch Wl of this station RSl.

The further control processes, in particular the reset processes initiated by the unstable multivibrator MK3 (FIG. 9), then proceed as described for the first traffic sequence.

In addition 9 sheets of drawings

Claims (22)

Patent claims: 1.Circuit arrangement for controlling a pneumatic tube system with several intermediate stations arranged in the course of a driving tube used in turning operation and a fan connected in the middle area of the driving tube, the two areas for generating suction and compressed air in the driving tube areas on both sides of the location of the fan connection provided with a driving contact Valves are assigned directly and one more each at the end of the two driving tube areas, with the setting commands for all valves being obtained in a central control device from sienals derived from the intermediate stations and the actuation of the travel contact, characterized in that the stations (RS 1 to -. 0 FS4), depending on their affiliation to one of the two driving tube areas (FI. / ⁷ II), issue area-specific markings to a transmitter marking line (SM) and a receiver marking line (EAf) as well as location-specific markings to a direction marking line (/? Λ ¹ ), which are all connected to the respective stations (RS1 to RS4) by sending or receiving station-specific switching means (U 1/2 to L'4 / 2 or El to £ 4) and lead to the central control unit in which, on the one hand, the identifications of the Markte.leitung.η (EAf, SM, RM) are each combined into one of three different traffic flows corresponding program signals (pl, ρ 2, ρ 3) and on the other hand the program signals (pl, ρ2, ρ3). which derive the receiver (em) and direction marker identifications (rm) as well as a program signal (p3) characterizing one traffic flow within one of the two driving areas (FI, FTI) or the signal obtained by actuating the central driving contact (Lz, Fz) Control commands (sb, TB) for the blower valves (Vb, Vs) can be linked to the control commands for the two travel pipe valves (V \. VW). 2. Circuit arrangement according to claim 1, characterized in that the stations (RS \. RS2) of one driving tube area (FI) connecting bridges ( Bs 1, Ds 2), the stations (RS 3, RS4) of the other driving tube area (FII), however, none Have connection between a transmitter switching means (U 1/2, (72/2 or U3 / 2, U4 / 2) and the scanner marking line (SM) . 3. Circuit arrangement according to claim I, ^r , 5 orW ">'' ndu ^r '' h characterized in that the stations (ft.Sl, RS2) of a driving tube area (FI) connecting bridges {Bei, Bei), the stations (RS3, RS4) of the other driving tube area (FII), on the other hand, have no connection between a receiving switching means (El, E2 or E3, E4) and the receiver marking line (EM) . 4. Circuit arrangement according to one of claims I to 3, characterized in that in the Richtungsmarkicrlcitung (RM) gate circuits (U lh, Kl / 1 to Γ 4/3, K 4/1) are included, which are part of all stations (RSl to RS4) are comprehensive gate chain and each station-individually by means of the corresponding transmission (U 1/2 to U4 / 2) or Emphngsschaltmittel (El to E4) can be controlled in such a way that for the operating cases in which the transmitting station taking into account a defined sequence in front of or behind the receiving station, significant signal states can be transmitted to the central control device. 5. Circuit arrangement according to claim 4, characterized in that an OR (Kl / 1 to V4 / 1) and an AND gate (U 1/3 to U4 / 3) are provided for each station (RSl to RS4) , the AND gate (U 1/3 to U 4/3) has a negated input connected to the transmission switching means (U 1/2 to 174/2) and a normal input which is connected to the output of the OR gate (Kl / 1 to K4 / 1), whose two inputs are connected to the receiving circuit (El to E 4) or to the output of the AND gate of the following station. 6. Circuit arrangement according to one of Claims 1 to 5, characterized in that the transmission switching means (£ / 1/2 "to [/ 4/2) are controlled by preparatory contacts (vA- 1 to vk4) which can be actuated by pneumatic tube carriers ready for dispatch. 7. Circuit arrangement according to one of claims 1 to 6, characterized in that the stations (RSl to RS4) have identification switching means (Kl to K 4) , each of which is a link of a chain circuit comprising all stations (RSl to RS 4). 8. Circuit arrangement according to claim 7, characterized in that a clock generator (TG) which is preferably integrated into the central control device controls the chain circuit and can be started by actuating one of the preparatory contacts (vk 1 to ν £ 4). 9. Circuit arrangement according to claim 1 or 8, characterized in that after the identification of a ready-to-send station (RS 1 to RS4), a control command is issued to a Ziclerkisierungseinrichtunj assigned to the pneumatic tube system. 10. Circuit arrangement according to Claim 9, characterized in that the control command is issued from the output of an AND gate (U 112 to U 412) , the two inputs of which are connected to the respective preparatory contacts (vAl to vA4) or a set output de; Identification switching means (Kl to K4) of the relevant station (RSl to RS4) are connected 11. Circuit arrangement according to claim ⁽ , or 10, characterized in that the target recognition device represents a two-dimensional Ko ordinatenfeld whose row (za, zb and column lines (r. 1, r. 2) via manually operated switch buttons (TA, TB : T1, T2) controllable and at the intersection points of which the station-specific receiving switching means (El bi; E 4) are arranged. 12. Circuit arrangement according to one of Proverbs 1 to 11, characterized in that daf. the receiving switching means (El to E4) are linked to switching magnets (WM2, WM 3) by mechanical switches (W 2, W3) which act on incoming pneumatic tube carriers. 13. Circuit arrangement according to one of claims 1 to 12, characterized in that from the activation of one of the receiving switching means (£ 1 to £ 4) a switch-on command for the Fan (G) can be derived. 14. Circuit arrangement according to one of claims 8 to 13, characterized in that a switch-off command for the clock generator (TG) can be derived from the activation of one of the receiving switching means (£ 1 to £ 4). 15. Circuit arrangement according to claim 13, characterized in that from the switch-on command for the blower (G), an actuating command for a release device (FM1 to FM 4) which locks a pneumatic tube carrier up to this point in time can be derived. 16. Circuit arrangement according to one of claims 1 to 15, characterized in that follow-on circuits (U 3, t / 4, Vl) are provided in the central control device, which in the case of the system-inherent time limitations of the markings issue corresponding permanent markers. 17. Circuit arrangement according to one of claims 1 to 16, characterized in that the identifications of the transmitter (SM). the receiver (EM) and the direction marker line (RM) as well as further identifications obtained by reversing them are connected to six AND gates (US to i / 10), two of which with their outputs to one of the three the program signals (p \ , pl. ρ3) emitting program points (PX, Pl, P 3) are summarized. 18. Circuit arrangement according to one of the claims 1 to 17, characterized in that the zenl.alc control device has a switch switching device (WE) which with the switching magnets (WMl, WM3) of the switches (W2, W3) in the sense of optional passage or discharge of pneumatic tube carriers is linked. 19. Circuit arrangement according to claim 18, characterized in that in the switch area arranged driving conacts (L 2, Fl; L 3, F3) can be prepared by the station-specific receiving switching means (EY to £ 4) and, when actuated by an incoming pneumatic tube, a reversing device (LRi) influence in the sense of resetting the central control device in an initial position. 20. Circuit arrangement according to claim 18 or 19, characterized in that the switch switching device (WE) is controlled by the program signals (pi, pi, ρ3) and the Umstcueinrichtung (LR X) so that in the Verkehrsabla'ufen in which pneumatic tube carriers come Pass the switches (Wl, W3) of the respective receiving stations (RSl, RS3) and then drive in the opposite direction through the same switches (Wl, W3) into station-specific discharge rooms, a control command! for the respective switch (W2, W3) is only released after it has been passed over for the first time. 21. Circuit arrangement according to claim 19 and 20, characterized in that the central control device has a memory device (/ V 8, / V9) which converts the brief influencing of the driving contacts (Ll, Fl; L3, F3) into a D.tuersignal. 22. Circuit arrangement according to claim 20, characterized in that from the actuation of the switch magnets (WM 2, WM 3) signals are derived, which with the Programmignai (p3), which characterizes a traffic flow with two crossing of a switch (Wl, W3) , are combined to form an AND link that acts on the fan valves (Vb, Vs).