EP3647600B1 - Identification d'un périphérique connecté électriquement - Google Patents

Identification d'un périphérique connecté électriquement Download PDF

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Publication number
EP3647600B1
EP3647600B1 EP19201918.0A EP19201918A EP3647600B1 EP 3647600 B1 EP3647600 B1 EP 3647600B1 EP 19201918 A EP19201918 A EP 19201918A EP 3647600 B1 EP3647600 B1 EP 3647600B1
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EP
European Patent Office
Prior art keywords
connector
accessory
message
accordance
accessory unit
Prior art date
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EP19201918.0A
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German (de)
English (en)
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EP3647600A1 (fr
Inventor
Viktor Dorscht
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pfeiffer Vacuum GmbH
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Pfeiffer Vacuum GmbH
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Publication date
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Priority to EP19201918.0A priority Critical patent/EP3647600B1/fr
Publication of EP3647600A1 publication Critical patent/EP3647600A1/fr
Priority to JP2020159318A priority patent/JP7005715B2/ja
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Publication of EP3647600B1 publication Critical patent/EP3647600B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F04D19/02—Multi-stage pumps
    • F04D19/04—Multi-stage pumps specially adapted to the production of a high vacuum, e.g. molecular pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring

Definitions

  • Vacuum pump system having a control unit with a connection for an accessory unit.
  • the invention also relates to a vacuum pump system with a control unit for operating the vacuum pump system.
  • one or more ports are provided for each accessory unit.
  • the accessory unit is operated by a control unit of the vacuum device after being connected to the connector.
  • the vacuum device In order to operate the vacuum device with the accessory unit, it may be necessary for the vacuum device to have information about the accessory units, for example whether the accessory unit is connected to the vacuum device, or information about possible functions or protocols or operating voltages.
  • the vacuum device can contain an input device with which a user can identify the connected accessory unit.
  • entering the information manually is tedious and not very flexible.
  • an electronic device configured to connect to an external device.
  • the connector includes an identification pin for detecting the connection.
  • the device further includes a connection configuration module for controlling an operation of the connector using the detection pin and a processor for configuring the connector and the connection configuration module.
  • the detection pin is used to check whether communication of a power supply message is possible.
  • a role associated with a power supply of the electronic device is switched, or a role associated with a data transfer is switched using at least one way of transmitting the power supply message or one way of changing a resistance connected to the detection pin, depending thereon whether the communication of the power supply message is possible.
  • a method for operating a vacuum device which is a vacuum pump system, the vacuum pump system having a control unit with a connection for an accessory unit, with the features of claim 1, and in particular in that the method has at least the following steps: Output a message over the connection according to a predetermined
  • a method for operating a vacuum device which is a vacuum pump system, the vacuum pump system having a control unit with a connection for an accessory unit, with the features of claim 2, and in particular in that the method has at least the following steps: outputting a message over the port according to a predetermined communication protocol; determining whether a reply to the message is received over the port; if it is determined that a response to the message is not received, determining whether an electrical resistance is connected to the port (in other words, connected to the port); and if it is determined that an electrical resistance is connected to the port, detecting and/or driving the accessory unit based on the connected electrical resistance. If it is determined that an electrical resistor is connected to the terminal, it is determined at a predetermined time interval whether the electrical resistor is still connected to the terminal.
  • determining whether an electrical resistance is connected to the connector means determining whether an (external) resistor (e.g. a characteristic resistor in the accessory unit) is connected to the connector (e.g. via a connector on the port to which an accessory unit can be connected). Therefore, when determining whether an electrical resistance is connected to the terminal, it is not determined whether a resistance is connected to the terminal internally in the vacuum device.
  • an (external) resistor e.g. a characteristic resistor in the accessory unit
  • an attempt is made to determine whether an accessory unit is connected to certain connecting lines of a vacuum device, which can communicate with the vacuum device according to a specified communication protocol and can thus actively identify itself to the vacuum device, and if it is determined that such an accessory unit is not is connected, an attempt is made to determine whether an accessory unit, which can be recognized by detecting a characteristic resistance built into the accessory unit, is connected to the specific connection lines of the vacuum device.
  • the accessory unit can be connected in a particularly simple manner, in particular without manual or other external configuration, or with a manual or other external configuration adapted to the accessory unit.
  • This also makes the operation of the vacuum device particularly flexible, since accessory units can be connected, disconnected and/or exchanged without great effort and as required.
  • particularly convenient operation in the sense of a “plug and play” concept is implemented. From the user's point of view, a connected accessory unit thus advantageously acquires its function simply by being connected to the connection.
  • Accessory units that can communicate with the vacuum device according to the specified communication protocol can also be referred to as “active accessory units” or “intelligent accessory units” because they can actively communicate with the vacuum device and can thus actively identify themselves to the vacuum device.
  • Passive accessory units Accessory units that cannot communicate with the vacuum device in accordance with the specified communication protocol can also be referred to as "passive accessory units" since they cannot actively identify themselves to the vacuum device, but by determining an electrical Resistance can be detected by the vacuum device. Passive accessory units can preferably only be switched on and off, such as valves, fans or relays.
  • the predetermined communication protocol can be a digital communication protocol.
  • the specified communication protocol can be set up to transmit digital information.
  • the message can be digital information converted into a sequence of voltages (in other words: a sequence of logical values, for example a sequence of bits, for example a sequence of logical values 0 and 1) according to the specified communication protocol.
  • a passive accessory unit which can be identified via an electrical resistance (which is built into the accessory unit, for example, and which can also be referred to as a characteristic resistance), is connected to the connection.
  • a resistor it can be determined whether or not a resistor is connected to the connection and/or the value of the resistor can be determined.
  • a two-step method is used, first determining whether a resistor is connected to the terminal and then, if it is determined that a resistor is connected to the terminal, determining the value of the resistor.
  • the control unit can operate and/or control it as required.
  • the term "type" covers at least the information necessary for the safe operation of the accessory unit.
  • the control unit can recognize the accessory unit based on a license plate number and call up further information, such as the maximum tolerable voltage, from a stored table.
  • the control unit immediately recognizes the necessary information, in particular using a signal transmitted by the accessory unit in the case of an active accessory unit.
  • the connection can have a plurality of communication contacts (in other words: pins; in other words: lines) for the communicative connection of the accessory unit to the control unit.
  • the communication contacts can be metallic and/or electrical contacts. At least one communication contact is used both for communication according to the specified communication protocol (i.e. outputting the message via the connection and/or receiving a response or determining whether a message was received) and determining whether there is a resistance to the connection connected.
  • a pin of the connection can be used either according to the specified communication protocol or as a measuring line for an analog value (for example a voltage that is dependent on the resistance).
  • the type of function of the pin (according to the communication protocol or as a measuring line) can, for example, be controlled by a microcontroller, which is also responsible for operating the Communication protocol is used, defined and / or carried out.
  • the communication contact can also be used for communication with other units that are not accessory units, for example for communication with a configuration and/or diagnostic unit, another vacuum device and/or a process control system.
  • a separate interface such as a diagnostic or configuration interface, can then advantageously be dispensed with.
  • several communication contacts can also be provided, in particular for each connection. At the same time, if a passive accessory is connected, the same interface can be used to recognize and/or control the passive accessory.
  • a message can be output cyclically via the connection according to the specified communication protocol and it can be determined whether an electrical resistance is connected to the connection, until either a response to the message is received or it is determined that an electrical resistance is connected connected to the port.
  • the accessory can then be detected and/or controlled based on the received response (for an active accessory) or the connected electrical resistance (for a passive accessory).
  • the change between the detection of active accessories and the detection of passive accessories according to a predetermined rule e.g. after a predetermined time or after a predetermined number of (unsuccessful) recognition attempts
  • a warning message issued to the user can be canceled and, for example, a warning message issued to the user will.
  • determining whether a response to the message is received over the port may include: determining whether a response to the message was received within the specified response time.
  • the specified response time can be chosen according to the specified communication protocol. The response time can be chosen in particular so that the communication times between the vacuum device and the accessory unit and the processing time in the accessory unit in response to the message received in the accessory unit. For example, the specified response time can be in the range from 1 ⁇ s to 500 ms.
  • an electrical resistor is connected to the connector (i.e. if a passive accessory unit is detected)
  • the value of the resistance has been determined upon detection of the passive accessory unit, it can be determined at a predetermined time interval whether a resistance of the same value is still connected to the terminal. This can be used to determine if the passive accessory is still connected to the port. This enables plug-and-play operation of the vacuum device with accessory units, in which accessory units can be connected and disconnected and changed during operation.
  • the predetermined time interval can be selected so that on the one hand the effort involved in repeated determination is limited and on the other hand it is recognized in good time (for example in good time to ensure safe operation of the vacuum device even without the accessory unit) if a previously connected accessory unit is no longer connected connected to the connector.
  • the time interval can be in the range from 1 s to 100 s.
  • the following steps can be performed: outputting another message via the port according to the predefined communication protocol; determining whether a reply to the further message is received over the port; if it is determined that a response to the message is received, driving the Accessory unit based on the received message.
  • detecting an active accessory by issuing a message on the port according to the specified communications protocol and determining whether a response is received
  • a passive accessory unit by determining if an electrical resistance is connected to the port. This makes it possible to determine whether an accessory is connected again immediately after removing a previously connected accessory.
  • the communication protocol can be a serial protocol.
  • the serial protocol can be set up according to RS-232 (or ANSI EIA/) TIA-232-F or EIA-232), RS-422 (or EIA-422 or ITU-T V.11), RS-423 ( or EIA-423) or RS-485 (or EIA-485), LVDS (Low Voltage Differential Signaling) or TTY.
  • At least one of the communication contacts that are used for the serial interface can be used to determine whether an electrical resistance is connected to this communication contact. This allows serial and analog detection of accessories on the same connector. Serial detection can mean detection of active accessories. Analog detection can mean detection of passive accessories.
  • the object of the invention is also achieved by a vacuum pump system with a control unit for operating the vacuum pump system according to the independent claim directed thereto, in particular by a control unit for operating the vacuum pump system, wherein the control unit is adapted to the method according to claim 1 or the method according to claim 2 to execute.
  • connection has a voltage supply line and a serial interface with a receiving line and a transmitting line. In this way, both active accessory units can be controlled and both active and passive accessory units can be supplied with power.
  • a sense resistor may be placed between the receiving line and the power supply line (or any other node in the vacuum device that provides a power supply).
  • the control unit may be adapted to determine whether an electrical resistance is connected to the terminal based on a measurement of a current through the sense resistor or a voltage (in other words: a voltage drop) across the sense resistor.
  • the resistance in the accessory unit can be determined, for example, via a voltage drop across the measuring resistor.
  • the measuring resistor can have an ohmic resistance in the range from several 100 ohms to several kilohms.
  • control unit can have a circuit board as a vacuum feedthrough.
  • vacuum bushing can also serve as an electronic component.
  • the accessory unit can be a sensor, a piezo sensor, a piezo/pirani sensor, a flood valve, a seal gas restrictor, a seal gas valve, a heater (e.g. a water heater or an air heater), a cooling (e.g. a water cooler or an air cooler), a relay and a fore pump contain or be.
  • accessories that can only be switched on and off are preferably passive accessories.
  • More complex accessories that require control based on multiple parameters are preferably active Accessory units where the controller already communicates according to the specified communication protocol.
  • connection has at least one supply contact for the electrical supply of the accessory unit.
  • the accessory unit therefore does not require an additional power connection, which simplifies the arrangement.
  • a driver can be provided for the supply contact or for the connection. This can advantageously be designed in such a way that accessory units from older device generations can also be operated reliably, in particular without means for emitting identification signals (ie, for example, passive accessory units).
  • the control unit can be designed to supply the accessory unit with different voltages, in particular via the supply contact.
  • these are two different voltages, in particular zero and a general operating voltage for all accessory units.
  • At least two non-zero, different voltages are particularly advantageous.
  • the connection of accessory units can be made more flexible, since they can be supplied as required without a transformer being necessary on the accessory unit.
  • the control unit is designed to apply a first non-zero voltage, for example 5 V, in particular to the connection or the supply contact, and another voltage that is suitable for the accessory unit after detection and/or communication with the accessory unit Voltage, for example 24 V to apply.
  • a specific supply voltage is permanently present, for example at the supply contact.
  • the accessory unit advantageously controls itself, in particular in Depending on commands or data specified by the control unit, which are advantageously transmitted via a communication contact of the connection. This simplifies the technical aspects of the vacuum device and control unit.
  • the supply contact can, for example, be used both for supplying power to the accessory unit and as mere switching means for operating a switch, such as a relay, for example in the case of a passive accessory unit.
  • a switch such as a relay
  • accessory units can also be operated for which power supply via the vacuum device would be impossible or technically very complex.
  • the accessory unit can be a backing pump for the vacuum device designed as a vacuum pump. This backing pump requires a relatively large amount of power, which could only be provided via the vacuum device with special technical effort. On top of that, this leads to an increased installation space, which is often undesirable.
  • the power supply of the accessory unit is advantageously outsourced.
  • a vacuum device Insofar as a vacuum device is described above as a unit that is different from the accessory unit, this refers to vacuum devices that are not intended as accessories for the vacuum device according to the invention, but are operated on an ancillary basis.
  • the backing pump described here is subordinate to and dependent on the vacuum pump.
  • the backing pump is controlled via the supply contact in this example. In principle, however, it can also be controlled via a communication contact or other means of communication.
  • the connection according to the invention can be configured and used in a variety of ways. Control and/or communication can be implemented for numerous units, in particular starting from the control unit. In all of this, the automatic recognition of the accessory unit according to the invention ensures both passive accessories as well as active accessories through the control unit for a whole new flexibility and simplicity.
  • the supply contact can be used to determine a voltage drop across the measuring resistor in the vacuum device, and thus the resistance in the accessory unit.
  • control unit is designed to control the accessory unit as a function of parameters of the vacuum device.
  • the speed is controlled as a function of a temperature in or on the vacuum device. This activation can take place on the one hand via a supply contact and on the other hand via a communication contact, the accessory unit then being prompted to adjust the speed itself.
  • the vacuum device and/or accessory unit are even designed in such a way that both are possible.
  • a common contact can also be provided as a communication contact and supply contact. Communication and supply are then also possible via the same line. This proves to be particularly advantageous with regard to compatibility. This means that existing connections do not need to be redesigned. In addition, the construction is and remains simple.
  • control unit is designed to recognize the type of accessory unit from a signal emanating from the accessory unit.
  • the signal can include, for example, an identifier and / or information that parameters directly Accessory unit, such as operating voltage concern.
  • the signal can be a message according to the specified communication protocol.
  • the signal can be made available, for example, via a communication contact of the connection of the control unit. This enables a particularly simple operation.
  • a serial interface for the accessory unit can be provided at the connection.
  • particularly reliable communication can be implemented in a simple manner.
  • a bus interface for the accessory unit can be provided at the connection. This enables particularly flexible operation for a large number of accessory units.
  • the accessory units can be controlled individually and/or in groups.
  • the number of accessory units can be expanded.
  • control unit can recognize an assignment of the connected accessory units to the respective connection, for example via a topology, ie via direct or assigned individual wiring between the control unit and the respective connections. Alternatively, however, an assignment can also take place via a bus system, for example.
  • control unit is designed to process payload data made available by the accessory unit.
  • data that is different from recognition data is considered to be useful data.
  • user data includes sensor data. That's how she can Accessory unit include a sensor, for example, and provide its information either analog or digital, especially through the connection. It is possible, with cost advantages, to dispense with a separate converter provided for the sensor. This not only saves a converter, but generally available supplier parts can also be operated with the control unit without major technical adjustments.
  • control unit is designed to operate the accessory unit even if the control unit does not recognize the accessory unit (but only recognizes that an accessory unit is connected, for example in the case of passive accessory units and only determines whether a resistor is connected and not a determination of the value of the resistor).
  • an input unit for inputting details (for example type or type or model) of the accessory unit to the control unit can be provided.
  • an input can also be made via an additional connection for an accessory unit, in which case either an input unit itself or a communication unit for receiving from an input unit can be connected or can be connected to this connection as an accessory unit.
  • control unit can be designed to operate more than one accessory unit connected to the connection at the same time.
  • at least one accessory unit that is or can be connected directly to the connection can have at least one additional connection for connecting at least one additional accessory unit.
  • the additional connector can either be connected directly to the first connector of the accessory unit, or be connected via a processing unit, for example a microprocessor, it being possible to decide, for example, on the forwarding of data and/or voltage from a primarily connected accessory unit to one or more subsequent accessory units.
  • an adapter for the parallel connection of at least two accessory units to one connection can also be provided.
  • identification and/or assignment can take place via address selection switches or pre-programmed addresses.
  • an accessory unit can also be connected via a number of connections, for example in order to achieve greater power, in particular at the supply contacts, and/or a greater communication data rate, in particular at a communication contact.
  • the possibility of connecting multiple accessories is provided for active accessories.
  • control unit can include a motor controller for the vacuum device, in particular a vacuum pump, or be part of one.
  • control unit it is also possible for the control unit to be designed separately from an engine controller and/or separately from other control elements.
  • One or more separate control units can be provided for one or more connections.
  • a control unit can be provided for a connection, and in particular adjacent to or integrated into it. It is advantageous here that the control unit can also be contacted and read out, in particular via the connection, when the motor controller or the other control element is not attached (in other words: not connected). This leads to further flexibility in the operation and maintenance of the vacuum device or a vacuum system.
  • a connection can, for example, be male or female and/or comprise a plug or a socket, although other types of connection are also conceivable.
  • the accessory unit can include, for example, a heating element, a fan, a flood valve, a sealing gas valve, a control relay, for example for a backing pump, a pressure gauge and/or a particularly integrated gauge. More generally, the accessory unit can therefore include at least one actuator and/or sensor, for example.
  • an accessory unit can also include a memory element for storing data. This can be used, for example, to record pump data over a longer period of time.
  • an (active) accessory unit includes both an actuator and a sensor, in particular for a parameter that can be influenced by the actuator.
  • the accessory unit is designed in particular to output data, in particular useful data, from the sensor via the connection. Examples of parameters that can be influenced by actuators are a temperature on a heating element and a speed on a fan.
  • the sensor data can advantageously be used for checking the function of the actuator or for controlling it as a function of the sensor data.
  • An (active) accessory unit can, for example, alternatively or additionally itself have an interface for communication with other devices or units.
  • the accessory unit includes a wireless interface. It can form a radio module, for example, by means of which a wireless connection can be retrofitted to a vacuum device in a particularly flexible manner.
  • the wireless interface can, for example, correspond to at least one of the standards for GSM, UMTS, LTE and/or other mobile radio standards, Be trained Bluetooth, NFC and / or WLAN.
  • the accessory unit can in this way read, control, recognize, etc., one or more other devices, which, for example, themselves represent an accessory unit for a vacuum device, in particular according to the invention, by radio - generally wirelessly.
  • the accessory unit can advantageously be designed to be operable by a control unit of the vacuum device even if this does not fully identify the accessory unit, but only recognizes, for example, that an accessory unit is connected (for example in the case of a passive accessory unit, in which only it is determined that an electrical resistance is connected to the terminal, but the value of the resistance is not determined).
  • the accessory unit has at least one second connection for connecting a further accessory unit to the accessory unit and/or to the vacuum device.
  • the second connection and its contacts can be connected directly to the first connection, it being possible in particular for the contacts and the accessory unit to be designed for connection to a bus system.
  • a processing unit of the accessory unit can also be connected between the connections.
  • the accessory unit can, for example, prevent the information and/or voltages from being forwarded and/or change them.
  • connection of the vacuum device and/or the accessory unit can, for example, be designed both for a mechanical connection and for an electrical and/or IT connection of the accessory unit to the control unit. This enables a particularly flexible connection.
  • the board's accessory interface may include a UART interface as a vacuum feedthrough for connecting intelligent accessories.
  • this interface can also be used to identify other accessories (in other words: other accessory units, such as a flood valve, a sealing gas valve or a heater).
  • these accessories cannot have any means of communication and therefore cannot actively identify themselves to a controller (e.g. the control unit).
  • these accessories can also be recognized in order to enable automatic parameterization on the process controller. The effort involved in modifying existing accessories is low (for example, only a characteristic resistor needs to be provided in the accessory unit).
  • the (passive) accessories are recognized via a characteristic resistor on the respective accessory.
  • the controller switches the function of its pins during runtime between AD (analog/digital) channel measurement and UART interface.
  • AD analog/digital
  • UART analog/digital
  • controller pins are used that support both functions and an additional resistor is built in from the UART_Rx line to V+. If either a characteristic resistance is detected at this pin at runtime or there is a response to a telegram (in other words: a message according to UART communication), the cyclic switching of the pins is deactivated and work continues with the detected method. After removing the recognized accessory, the two recognition methods are switched back to cyclical switching to ensure renewed identification (which enables a plug and play function).
  • a vacuum device 10 designed as a turbomolecular pump with a control unit 12 and two connections 14 for accessory units (not shown) is shown.
  • Various accessory units such as holding elements, fans, flood valves, sealing gas valves, control relays, pressure gauges and/or integrated gauges, can be connected to the connections 14 in each case.
  • One or, as shown here, two or more connections 14 can be provided.
  • the connections 14 are arranged on a lower part 16 of a housing of the vacuum device.
  • one or more connections 14 can also be arranged elsewhere, for example on an upper part 18 of the housing and/or on and/or in the control unit 12 or its housing.
  • the sectional plane runs essentially through the lower part 16, with the vacuum device 10 being rotated essentially through 180°, ie the vacuum device is viewed from below.
  • Electronics 20 are visible, which themselves, alternatively or in addition to the control unit 12, can form a control unit for accessory units connected to the connections 14.
  • the control unit 12 can include an engine controller, for example.
  • the electronics 20 can be designed as a control unit for one or more accessory units, for example in such a way that the accessory unit can also be operated when the control unit 12 is not connected.
  • connections 22 are additionally shown here, which are each connected to a connection 14 of the vacuum device 10 .
  • a line 24 runs to a respective accessory unit, which is not shown here.
  • the connections 14 are in the form of sockets and the connections 22 are in the form of plugs.
  • the first exemplary connection diagram shown is provided with two accessory units 26 for connection to a vacuum device 10 .
  • the vacuum device 10 comprises a control unit 12 with two connections 14 for respective connections 22 of the accessory units 26.
  • the connections 22 are each connected to the accessory unit 26 via a line 24, but it is also conceivable, for example, for the connection 22 to be formed directly on the accessory unit 26 .
  • An accessory unit 26 could form a plug-in module.
  • a connection 14 can also be connected to the control unit 12 or the vacuum device 10 via a line or in some other way, but it can be designed separately.
  • a second connection scheme is in figure 5 shown.
  • a vacuum device 10 includes a connection 14 provided on the housing of the vacuum device 10 , an accessory unit 26 having a connection 22 for connection to the connection 14 arranged on the vacuum device 10 being provided.
  • a control unit 12 includes three connectors 14.
  • a connector 22 is provided for connection to one of the three connectors 14 and connects the control unit 12 to an accessory unit 26 which is attached to and/or in the vacuum device 10.
  • This accessory unit 26 can have, for example, a heating element for heating the vacuum device 10 and/or a sensor for detecting a parameter prevailing in or on the vacuum device 10 .
  • the third connection scheme shown includes a vacuum device 10, a control unit 12 with two connections 14. Another connection 14 is provided on a housing part of the vacuum device 10 separately from the control unit 12. The connection 14 is connected to the control unit 12 via a line 27 .
  • the line 27 runs inside and/or in the housing of the vacuum device 10 or the control unit 12.
  • the connection 14 can, for example, be used both for a mechanical connection of the accessory unit 26 with the vacuum device 10 and for an electrical and/or information technology connection of the accessory unit 26 be formed on the control unit 12.
  • the control unit 12 can, quite generally, as shown, be designed as a component that is subordinate to the main housing of the vacuum device 10 and/or can also be integrated, i.e. it can also be provided elsewhere in the vacuum device 10 .
  • the number and arrangement of further connections 14 can also vary.
  • the accessory unit 26 has a connection 22 which is directly connected to the control unit 26 . So there is no flexible line provided. However, such an arrangement can be provided as an alternative or in addition.
  • the accessory unit 26 is connected to the connection 14 of the vacuum device 10 both mechanically and electrically and/or in terms of information technology via the connection 22 .
  • a fourth connection diagram is shown, in which a control unit 12 is arranged in an integrated manner in a housing of the vacuum device 10 .
  • the control unit 12 includes a connection 14.
  • the vacuum device 10 includes a further connection 14 which is connected to the control unit via a line 27.
  • Two accessory units (not shown) can be connected to the respective connections 14 via connections 22 .
  • a vacuum device 10 with a connection 14 is shown.
  • an accessory unit 26 can be connected to the connection 14, which has a connection 22 for connecting the accessory unit 26 to the connection 14 of the vacuum device 10 includes.
  • the accessory unit 26 also includes a connector 14 for connecting one or more other accessory units.
  • An adapter 28, for example, can be connected to one of the connections 14 via a connection 22, which adapter has a plurality of connections 14 for connecting further accessory units.
  • connection 14 of a vacuum device not shown here is shown, which has a supply contact 30 and a communication contact 32 .
  • An accessory unit 26 also has a supply contact 34 and a communication contact 36 on a connection 22 .
  • the accessory unit 26 can communicate with a control unit via the communication contacts 36 and 32 of the ports 22 and 14, respectively.
  • the communication pins 36 and 32 may be connected to a UART (Universal Asynchronous Receiver Transmitter) which provides circuitry for realizing serial communication (in other words, communication over a serial port).
  • UART Universal Asynchronous Receiver Transmitter
  • an accessory unit 26 with only one supply contact 34 is shown.
  • This accessory unit 26 can be supplied with electrical energy via the supply contacts 34 and 30 .
  • This accessory unit 26 illustrates an older generation accessory unit than the upper accessory unit 26 .
  • the vacuum device with the connection 14 can advantageously be designed in such a way that the lower accessory unit 26 can also be recognized without full automatic recognition (whereby, for example, it is only recognized that an accessory unit 26 is connected, but the type (or type or model) of the accessory unit 26 ) is operable.
  • a communication device and/or a communication contact can also be retrofitted to an accessory unit, for example via one connected between the connection 22 of the lower accessory unit 26 and the connection 14 of the vacuum device Detection unit 38.
  • the detection unit 38 has a supply contact 30 on the connection 14 for supplying the accessory unit 26 with power. At the connection 22 it has a communication contact 36 in addition to the supply contact 34 .
  • the detection unit 38 can use this to output a signal, for example, which indicates the type of accessory unit 26 connected.
  • the signal or the type can be pre-programmed and/or inputtable, for example.
  • the 10 12 shows a control unit 12 and an accessory unit 26.
  • the (control unit side) connector 14 on the control unit 12 may contain a plurality of contacts 40.
  • FIG. An example is in 10 the lowermost contact is provided with reference number 40 .
  • the accessory-side connection 22 is found on the side of the accessory unit 26 as a counterpart to the connection 14 of the control unit 12 .
  • the (accessory-side) connection 22 can likewise contain a plurality of contacts 42 .
  • the number of contacts 40 of the controller-side connector 14 and the number of contacts 42 of the accessory-side connector 22 may be identical.
  • the control unit 12 can be included in or connected to the vacuum device 10, as described above.
  • a predetermined communication pin 44 (which may serve as an Rx line of a serial interface, for example) of the communication pins 40 may have a sense resistor 48 connected thereto.
  • the measuring resistor 48 can be connected to a further node 50, which provides a supply voltage, for example.
  • the supply voltage can, for example, also be made available to the accessory unit 26 via one of the communication contacts 40 .
  • the communication contact 44 can also be connected to a microcontroller 56 .
  • microcontroller 56 may provide a UART or be a UART.
  • the microcontroller 56 can be set up via the predetermined communication contact 44 either a To provide communication according to the specified communication protocol (e.g.
  • a serial interface for example for the detection of active accessory units, or to provide the specified communication contact 44 as a measuring line for an analog value, for example a voltage, which is dependent, for example, on the measuring resistor 48 and one in one To use accessory built-in resistance, for example, in the detection of passive accessory units.
  • a characteristic resistor 52 is connected to a communication contact 46 of the communication contacts 40 on the accessory-side interface 22 .
  • the characteristic resistor 52 can be connected to ground 54 . through the in 11
  • a voltage drop across the measuring resistor 48 can be determined and it can thus be recognized that an accessory unit 26 is connected to the vacuum device 10 .
  • the measurement resistor 48 is known, the size of the characteristic resistor 52 can be determined, and the accessory unit 26 can thus be recognized (in other words, identified).
  • FIG. 12 shows a flow chart of a method according to the invention.
  • the method starts at 1202. Alternatively, the method may start before step 1226.
  • a switch is made to digital input and output.
  • an attempt is made to identify an active accessory, for example, by receiving a response (or waiting for a response) to a message according to the specified communication protocol. It is compared against a list 1208 (or database) of active accessories, for example, determining whether a received message can be used to identify an active accessory from the list 1208 of active accessories.
  • step 1226 If an active accessory was not detected, the method continues at step 1226. If an active accessory is detected, the method continues at step 1212 . In step 1212, the identified accessory is entered into a list 1218 (or database) of accessories connected (to the vacuum device). Thereafter, proceeding to step 1214, which checks whether the recognized accessory is still connected. If it is detected in 1214 that the detected accessory unit is still connected, the connection to the accessory unit is maintained in 1216 and the check in step 1214 is carried out again after a predetermined timer has expired. In step 1226, a switch is made to analog input. At 1228, an attempt is made to detect a passive accessory, for example, by determining whether an electrical resistor is connected to the controller's terminal.
  • a comparison is made with a list 1230 (or database) of passive accessory units, for example it is determined whether a passive accessory unit from the list 1230 of passive accessory units can be identified using a determined resistance.
  • 1220 it is determined whether a passive accessory has been detected. If a passive accessory is not detected, the method continues at step 1204 . If a passive accessory was detected, in step 1222 the detected accessory is registered in the list 1218 of connected accessories. In 1224 the expiry of a predetermined timer is monitored. Thereafter, at 1228, a determination is made as to whether the previously recognized passive accessory is still connected.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Positive Displacement Air Blowers (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Claims (14)

  1. Procédé pour faire fonctionner un système de pompe à vide, le système de pompe à vide présentant une unité de commande (12) avec un raccord (14) pour une unité accessoire (26),
    le procédé comprenant au moins les étapes suivantes consistant à :
    - émettre un message via le raccord (14) selon un protocole de communication prédéfini ;
    - déterminer si une réponse au message est reçue via le raccord (14) ;
    - s'il est déterminé qu'une réponse au message n'est pas reçue, déterminer si une résistance électrique (52) est connectée au raccord (14) ; et
    - s'il est déterminé qu'une résistance électrique (52) est connectée au raccord (14), détecter et/ou commander l'unité accessoire (26) en se basant sur la résistance électrique (52) connectée ;
    s'il est déterminé qu'une résistance électrique (52) n'est pas connectée au raccord (14) :
    - émettre un autre message via le raccord (14) selon ledit protocole de communication prédéfini ;
    - déterminer si une réponse à l'autre message est reçue via le raccord (14) ;
    - s'il est déterminé qu'une réponse à l'autre message est reçue, commander l'unité accessoire (26) en se basant sur le message reçu.
  2. Procédé pour faire fonctionner un système de pompe à vide, le système de pompe à vide présentant une unité de commande (12) avec un raccord (14) pour une unité accessoire (26),
    le procédé comprenant au moins les étapes suivantes consistant à :
    - émettre un message via le raccord (14) selon un protocole de communication prédéfini ;
    - déterminer si une réponse au message est reçue via le raccord (14) ;
    - s'il est déterminé qu'une réponse au message n'est pas reçue, déterminer si une résistance électrique (52) est connectée au raccord (14) ; et
    - s'il est déterminé qu'une résistance électrique (52) est connectée au raccord (14), détecter et/ou commander l'unité accessoire (26) en se basant sur la résistance électrique (52) connectée ;
    - s'il est déterminé qu'une résistance électrique (52) est connectée au raccord (14), déterminer à un intervalle de temps prédéfini si la résistance électrique (52) est toujours connectée au raccord (14).
  3. Procédé selon la revendication 2,
    dans lequel l'intervalle de temps prédéfini se situe dans la plage de 1 s à 100 s.
  4. Procédé selon l'une au moins des revendications 2 ou 3, consistant en outre à :
    s'il est déterminé que la résistance électrique (52) n'est plus connectée au raccord (14) :
    - émettre un autre message via le raccord (14) selon ledit protocole de communication prédéfini ;
    - déterminer si une réponse à l'autre message est reçue via le raccord (14) ;
    - s'il est déterminé qu'une réponse au message est reçue, commander l'unité accessoire (26) en se basant sur le message reçu.
  5. Procédé selon l'une au moins des revendications 1 à 4, consistant en outre à :
    émettre de manière cyclique un message via le raccord (14) selon ledit protocole de communication prédéfini et déterminer si une résistance électrique (52) est connectée au raccord jusqu'à ce qu'une réponse au message soit reçue ou qu'il soit déterminé qu'une résistance électrique (52) est connectée au raccord ; et
    commander l'unité accessoire (26) en se basant sur la réponse reçue ou sur la résistance électrique (52) connectée.
  6. Procédé selon l'une au moins des revendications 1 à 5,
    dans lequel il est déterminé si une réponse au message est reçue via le raccord dans un temps de réponse prédéfini.
  7. Procédé selon la revendication 6,
    dans lequel le temps de réponse prédéfini se situe dans la plage de 1 µs à 500 ms.
  8. Procédé selon l'une au moins des revendications 1 à 7,
    dans lequel le protocole de communication est un protocole série.
  9. Procédé selon l'une au moins des revendications 1 à 8,
    dans lequel une valeur d'une résistance électrique (52) connectée au raccord (14) est déterminée ; et
    l'unité accessoire (26) est commandée en se basant sur la valeur déterminée de la résistance électrique (52) connectée.
  10. Système de pompe à vide comportant une unité de commande (12) pour faire fonctionner le système de pompe à vide,
    dans lequel l'unité de commande (12) est adaptée pour mettre en oeuvre le procédé selon l'une des revendications précédentes.
  11. Système de pompe à vide selon la revendication 10,
    dans lequel le raccord (14) comprend une ligne d'alimentation en tension et une interface série comprenant une ligne de réception et une ligne d'émission.
  12. Système de pompe à vide selon la revendication 11,
    dans lequel une résistance de mesure (48) est disposée entre la ligne de réception et la ligne d'alimentation en tension ; et
    l'unité de commande (12) est adaptée pour déterminer si une résistance électrique (52) est connectée au raccord (14) en se basant sur une mesure d'un courant à travers la résistance de mesure (48) ou d'une tension à la résistance de mesure (48).
  13. Système de pompe à vide selon l'une au moins des revendications 10 à 12, dans lequel l'unité de commande (12) comprend une platine comme traversée sous vide.
  14. Système de pompe à vide selon l'une au moins des revendications 10 à 13, dans lequel l'unité accessoire (26) comprend au moins un accessoire choisi dans un groupe constitué par un capteur, un capteur piézoélectrique, un capteur piézoélectrique/Pirani, une vanne d'admission, un étranglement à gaz de barrage, une vanne à gaz de barrage, un chauffage, un chauffage à eau, un chauffage à air, un refroidissement, un refroidissement à eau, un refroidissement à air, un relais et une pompe primaire.
EP19201918.0A 2019-10-08 2019-10-08 Identification d'un périphérique connecté électriquement Active EP3647600B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19201918.0A EP3647600B1 (fr) 2019-10-08 2019-10-08 Identification d'un périphérique connecté électriquement
JP2020159318A JP7005715B2 (ja) 2019-10-08 2020-09-24 真空機器及び真空機器を運転する方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19201918.0A EP3647600B1 (fr) 2019-10-08 2019-10-08 Identification d'un périphérique connecté électriquement

Publications (2)

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EP3647600A1 EP3647600A1 (fr) 2020-05-06
EP3647600B1 true EP3647600B1 (fr) 2022-05-18

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4071364A1 (fr) * 2022-06-30 2022-10-12 Pfeiffer Vacuum Technology AG Appareil sous vide, dispositif d'évaluation, système de communication, ainsi que procédé permettant de faire fonctionner un appareil sous vide et procédé permettant de faire fonctionner un dispositif d'évaluation

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7473498B2 (ja) 2021-03-31 2024-04-23 株式会社デンソー 通信装置、基地局、及び通信方法
EP4006350B1 (fr) * 2021-12-09 2023-09-13 Pfeiffer Vacuum Technology AG Pompe à vide

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6272400B1 (en) 1998-07-13 2001-08-07 Helix Technology Corporation Vacuum network controller
JP3130890B2 (ja) * 1999-02-25 2001-01-31 セイコー精機株式会社 磁気軸受装置及び磁気軸受制御装置
DE102014116555A1 (de) * 2014-11-12 2016-05-12 Pfeiffer Vacuum Gmbh Vakuumgerät
EP3096021B1 (fr) * 2015-05-20 2022-07-20 Pfeiffer Vacuum Gmbh Télé-diagnostic d'appareils sous vide
KR102660519B1 (ko) * 2016-08-01 2024-04-25 삼성전자주식회사 외부 장치를 인식하는 방법 및 이를 지원하는 전자 장치

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4071364A1 (fr) * 2022-06-30 2022-10-12 Pfeiffer Vacuum Technology AG Appareil sous vide, dispositif d'évaluation, système de communication, ainsi que procédé permettant de faire fonctionner un appareil sous vide et procédé permettant de faire fonctionner un dispositif d'évaluation

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EP3647600A1 (fr) 2020-05-06
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