• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    In a transport system comprising a rail network having a plurality of autonomous control sections (AL) and the control sections (AL) respectively associated electrical control units, and a plurality of small transport containers (3) which are guided on the rail network, wherein a small transport container (3 ) Means for communicating within a control section (AL) with the electrical control unit associated with the respective control section (AL), the control unit being adapted to receive analog status signals (11) from the small transport container (3) and analog control signals (14 ) to the small transport container (3), the control unit comprises a programmable logic controller (10) adapted to provide digital control signals (13) and a signal matching circuit (9) connected to the programmable logic controller (10) to convert the analog status signals (11) into digital ones Status signals (12) and the digital control signals (13) into the analog control signals (14) to convert.
    公开号:AT515096A4
    申请号:T360/2014
    申请日:2014-05-15
    公开日:2015-06-15
    发明作者:
    申请人:Vamed Kmb Krankenhausman Und Betr Sführungs Gesmbh；
    IPC主号:
    专利说明:

    The invention relates to a transport system, comprising a rail network, which has a plurality of autonomous control sections and the control sections respectively associated electrical control units, and a plurality of small transport containers, which are guided on the rail network, wherein a small transport container comprises means to within a control section with the communicating with the respective control section associated electrical control unit, wherein the control unit is adapted to receive analog status signals from the small transport container and to send analog control signals to the small transport container.
    The invention further relates to a method for operating a small container transport system, in which a plurality of small transport containers guided on rails and controlled by analog control signals in control sections.
    Various transport systems for small transport containers are known from the prior art. The present invention is concerned with such systems which have a plurality of control sections within a rail network for controlling the small transport containers. In this case, the small transport containers communicate within the control sections with electrical control units. These send control signals to the small transport containers, e.g. Stop or drive signals. Outside the control gates, in the travel sections, the small transport containers move along the rails as long as they are powered. Usually, the individual control units work independently of each other. A central control, which coordinates the individual control units, is therefore not provided. The control units are analog relay-based, relay-based controllers that receive analog status signals from the small transport containers and send analog control signals to the mini-carriers.
    A disadvantage of these control units is the lack of flexibility, since a change in the control task, a change in the wiring is required. Furthermore, the maintenance cost of such control units is relatively high.
    The present invention therefore aims to avoid the above-mentioned disadvantages. In particular, the invention aims to provide a flexible, low cost, and failsafe control unit for the transport systems described above. Furthermore, the solution provided should be able to be integrated into the existing transport systems without major adjustments to the transport systems being required.
    To achieve this object, the transport system of the type mentioned is inventively developed such that the control unit comprises a programmable logic controller which is designed to provide digital control signals, and connected to the programmable logic controller Signalanpassschaltung which is adapted to the analog status signals in convert digital status signals and the digital control signals into the analog control signals. The analogue connection-programized control is thus replaced by a programmable logic controller without the need for an adaptation of the further processing devices, because the analog status signals are converted into digital status signals in order to subsequently supply them to the programmable logic controller. Likewise, the digital control signals output by the controller are converted into analog control signals to be supplied to the control section. These conversions are made by a suitable signal matching circuit.
    The programmable logic controller is formed by a PLC known to those skilled in the art, for example by a commercially available SIMATIC S7 1500 compact controller from Siemens. The programming of this programmable logic controller is carried out specifically for the respective transport system.
    A signal matching circuit according to the invention thus has, on the one hand, at least one connection to the programmable logic controller and at least one connection to a small transport container present in the associated control section. Within the signal matching circuit, the conversion of the incoming analog signals into digital signals and the incoming digital signals into analog signals.
    It is preferably provided that the control unit comprises at least one relay, which is designed to selectively connect the small transport container with a power supply or separate. The use of a relay is a simple and inexpensive way to control the power supply to a small transport container. Furthermore, a relay for the circuit of a preferred
    Switch and / or provided for the polarity reversal of the driving voltage. These relays are operated by the programmable logic controller.
    A preferred embodiment provides that busbars are provided to connect the small transport container with a power supply. In this case, the small transport container on means for receiving electricity from busbars, such as sanding shoes. Since the small transport containers are guided by means of rails, this training provides a cost-effective and safe power supply.
    Alternatively, it can be provided that the small transport containers are supplied with power via another power supply, for example via overhead lines. Furthermore, it can be provided that the small transport container have a self-sufficient energy source, such as a rechargeable battery.
    Preferably, a control rail is provided, which is designed to transmit the analog control signals to the small transport containers. This embodiment comprises a control rail, which is connected via the signal matching card to the programmable logic controller and receives from this programmable logic controller signals that can be read from the small transport containers. The control rails are preferably arranged only in the control sections. The control rails can be arranged above, below or next to the small transport containers. For communication with the control rail are the small transport container with
    Pantographs, for example, equipped with sanding shoes.
    Alternatively it can be provided that the control rail is continuous, so is also present in the travel sections between the control sections. This has the advantage that this control rail can be used not only for the transmission of the control signals, but at the same time for the mechanical guidance of the small transport container. In this case, it is necessary for the control rails of the individual control sections to be electrically separated from one another.
    In order to enable a more efficient maintenance of the transport system, it is preferably provided that the signal matching circuit has connections for an analyzer. As a result, the processes within the controller can be analyzed and, for example, malfunctions can be located and eliminated more quickly. Furthermore, a connection between the signal matching circuit and an emergency relay is preferably provided, so that the emergency relay transmits an emergency signal to the signal matching circuit when the voltage drops, and the signal matching circuit sends a stop signal to the small transport containers.
    Preferably, each control unit is assigned its own signal adaptation circuit. As a result, the reliability of the transport system is increased, because in case of failure of a signal matching circuit only one control unit fails.
    It is preferably provided that a plurality of signal matching circuits is arranged on a common board. For example, up to 12 signal conditioning circuits may be arranged on a single board. This reduces the space required for the controls and facilitates maintenance.
    The transmission of the analog control signal is preferably carried out by providing voltage levels that can be tapped by the small transport container via the control rail.
    To solve the object underlying the invention, the invention further proposes a method of the type mentioned above, wherein analog status signals of the small transport container of a signal conditioning circuit are converted there into digital status signals and fed to a programmable logic controller and the programmable logic controller provides digital control signals, which are then converted by the signal matching circuit into analog control signals, which are finally fed to the small transport containers.
    A preferred embodiment provides that the analog signals can assume two different values. In this embodiment, it is therefore intended to be able to send two different signals that trigger two different actions to the small transport container. For example, these actions are " pause " and " driving ".
    The small transport containers are mechanically guided by means of rails. These rails are preferably two parallel to each other and below the small transport container arranged rails.
    The invention will be explained in more detail with reference to an embodiment shown in the drawing. 1 shows a schematic plan view of a transport system according to the invention, and FIG. 2 shows a schematic functional diagram of a controller according to the invention.
    In Fig. 1, an inventive transport system is shown, comprising rails 4 and 5, which form a first track 23 and second track 24. The first track 23 has a first direction of travel denoted by 25 and the second track has a second direction of travel denoted by 26. The section shown comprises twelve control sections A to L. In the control section G is a small transport container 3 is positioned, which is guided within the transport system. The power supply for the electric drive of the small transport container 3 via the rails designed as busbars 4 and 5. Furthermore, control rails 6 are provided within the control sections A-L. The control rails 6 of the individual control sections A-L are each electrically separated from each other. The control sections C of the track 23 and Η, I and J of the second track 24 are designed as a movable switch 21. The control rails C, Η, I and J associated rails 4, 5 and control rails 6 can together and together with an optionally located in one of the control sections C, Η, I and J small transport container 3 from a first position shown along the double arrow 17 in a second position are moved. In the second position, the rails of the control sections Η, I and J are aligned with those of the control sections B and D and the rails 4 and 5 and the control rails 6 of the control sections Η, I and J are arranged to communicate with the stationary control sections B and D form a continuous, passable track. The movement of the switch 21 between the two positions along the double arrow 17 is performed by means of a switch motor 8.
    For controlling the control sections A-L, a programmable logic controller 10 is provided.
    Schematically, the control of the control section G is shown. The control of the other control sections is analog, wherein each control section is assigned its own signal matching circuit. The programmable logic controller 10 is connected to a control section G associated signal matching circuit 9, a relay group 7 and a scanning device 2. The scanning device 2 is designed to pick up a mechanical coding of a small transport container 3 and to send this information to the programmable logic controller 10. This coding represents the set destination of the small transport container 3. The signal matching circuit 9 is connected to the control rail 6 in the control section G and receives from this analog status signals, for example. A presence signal when a small transport container 3 enters the control section 1. The signal matching circuit 9 is designed to convert these analog status signals into digital status signals and then send them to the programmable logic controller 10. Furthermore, the signal matching circuit 9 is designed to receive digital control signals from the programmable logic controller 10, to convert these into analog control signals and then to send to the control rail 6, which provides the analog control signals for the small transport container 3, for example in the form of a voltage level. The small transport container 3 picks up these analog control signals from the control rail 6 and reacts accordingly. For example, one voltage level may mean a stop signal and another voltage level a drive signal. The relay group 7 is connected to the switch motor 8 and the rails 4 and 5 and includes a relay for controlling the switch motor 8, a relay for reversing the voltage applied to the rails 4 and 5 driving voltage and a relay for switching on or off the driving voltage , The relay for polarity reversal is required to change the direction of travel of the small transport container 3. Furthermore, the relay group 7 comprises an emergency relay, which is connected to the signal matching circuit 9 and, in the case of a voltage drop within the control, excites the signal matching circuit 9 to send an analog control signal to the control rail 6, which stops the small transport container 3.
    This relay group 7 is not formed the same at all track sections or not provided at all track sections. For example, track sections without switch also no relay is needed for switch control.
    In Fig. 2, the operation of the control of the small transport container in the control section 1 is schematically illustrated by means of a diagram, wherein like reference numerals designate like parts as in Fig. 1. From the control rail 6, an analog status signal 11 is sent to the signal matching circuit 9, for example a
    Presence signal of a small transport container, not shown. This analog status signal 11 is converted in the signal matching circuit 9 into a digital status signal 12 and sent to the programmable logic controller 10. The programmable logic controller 10 processes this digital status signal 12 based on the received via the scanning device 2 (not shown) target coordinates of the small transport container 3 and optionally then sends a digital control signal 13 to the signal matching circuit 9. The signal matching circuit 9 converts the digital control signal 13 into an analog control signal 14 and sends the analog control signal 14 to the control rail 6. This analog control signal can be received by a small transport container and evaluated. Furthermore, the programmable logic controller 10 optionally sends a relay control signal 15 to the relay group 7, for example, to activate the point motor 8 or umzupolen the driving voltage. Furthermore, the relay group 7 is connected to the signal matching circuit 9 to send an emergency signal 16 via an emergency relay, if necessary, to the signal matching circuit. The
    Signaling circuit 9 then sends a stop signal to the small transport container located in the control section.
    The switch 21 shown in FIG. 1 functions as follows. A small transport container 3 moves in the control section G and sends via the control rail 6, an analog status signal 11 to the controller. If there is no further small transport container in the control sections Η, I and J and the switch 21 is in the correct position, then the
    Small transport container 3 a driving signal and enters the switch 21 a. Once the small transport container 3 is in the switch 21, the small transport container 3 via the control rail 6 in the control section H sends a corresponding analog status signal 11 to the programmable logic controller 10 and this controller 10 activated via the switch relay of the relay group 7, the switch motor 8, so that the switch 21 moves to the second position. If the switch 21 arrived in the second position, the driving voltage of the rails 4 and 5 is reversed and sent a driving signal from the controller to the small transport container 3, so that the small transport container 3 can drive from the switch 21 in the direction of the first direction 25.
    权利要求:
    Claims (9)
    [1]
    Claims 1. A transport system comprising a rail network comprising a plurality of autonomous control sections and electrical control units associated with the control sections, respectively, and a plurality of small transport containers routed on the rail network, a small transport container having means for communicating with the control unit within a control section the electrical control unit associated with the respective control section, the control unit being designed to receive analogue status signals from the small transport container and to transmit analogue control signals to the small transport container, characterized in that the control unit comprises a programmable logic controller (10) which is designed to digital control signals (13), and a signal matching circuit (9) connected to the programmable logic controller (10), which is designed to convert the analog status signals (11) into digital status signals gnale (12) and the digital control signals (13) into the analog control signals (14) to convert.
    [2]
    2. Transport system according to claim 1, characterized in that the control unit comprises at least one relay which is designed to connect the small transport container (3) optionally with a power supply or to separate.
    [3]
    3. Transport system according to claim 1 or 2, characterized in that busbars (4,5) are provided to connect the small transport container (3) with a power supply.
    [4]
    4. Transport system according to claim 1, 2 or 3, characterized in that a control rail (6) is provided which is adapted to transmit the analog control signals (14) to the small transport container (3).
    [5]
    5. Transport system according to one of claims 1 to 4, characterized in that the signal matching circuit (9) has connections for an analyzer.
    [6]
    6. Transport system according to one of claims 1 to 5, characterized in that each control unit is assigned its own Signalanpasschaltung (9).
    [7]
    7. Transport system according to one of claims 1 to 6, characterized in that a plurality of signal matching circuits (9) is arranged on a common board.
    [8]
    8. A method for operating a small transport container transport system, in which a plurality of small transport containers guided on rails and controlled by analog control signals in control sections, characterized in that analog status signals of the small transport containers are fed to a signal conditioning circuit, where they are converted into digital status signals and a programmable logic controller and the programmable logic controller provides digital control signals, which are subsequently converted by the signal matching circuit into analog control signals which are finally supplied to the small containers.
    [9]
    9. The method according to claim 8, characterized in that the analog signals can assume two different values. Vienna, 15 May 2014 Applicants by:

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    引用文献:
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA360/2014A|AT515096B1|2014-05-15|2014-05-15|Transport system and method for small transport containers moving in a rail network|ATA360/2014A| AT515096B1|2014-05-15|2014-05-15|Transport system and method for small transport containers moving in a rail network|
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