CH708464B1 - Store drive. - Google Patents

Abstract

The invention relates to a stator drive (15), which comprises a configuration device and is designed for operation in different bus systems. Features of bus modes can be stored in a memory (33) of the configuration electronics (31). By comparing detected features with stored features, the stator drive (15) detects the current bus mode and configures itself accordingly. Furthermore, the invention relates to a method for configuring the inventive stator drive.

Description

Description: The subject matter of the present patent application is a blind drive and a method for configuring a blind drive according to the features of patent claims 1 and 5.

Shading devices such as shutters. Venetian blinds and the like commonly include a drive for influencing the location of the curtain. Storenantriebe can be designed depending on the intended conditions of use in different ways, they may include one or more control inputs, designed for operation with DC or AC voltage, low or low voltage, limit switches for interrupting or switching the power supply include or alternatively with an interface be designed for operation by means of a bus system. Several bus systems and specialized sub-bus systems have gained importance in building automation. These include inter alia fieldbuses operating according to the KNX standard or the Local Operating Network LON. Another standard interface for controlling electronic drives such as blinds or shutters is the "Standard Motor Interface", or "SMI" for short. SMI enables standardized digital communication between higher-level controllers and the respective drive via a bus system. Each bus system or sub-bus system has characteristic parameters. Such parameters are, for example, the type of signal transmission (via electrical lines or by radio), number, arrangement and design of signal and feed lines and definitions of the telegrams for the transmission of information between two or more participants.

Conventionally, drives are designed only for use in a particular bus system or sub-bus system. In each bus system or sub-bus system are parameters such as number and arrangement of interface contacts, required «connecting lines such as supply and communication lines between a higher-level control and the drive and the communication progress, which regulate the flow of unidirectional or bidirectional information transfer between the bus participants, fixed specified. If a drive is to be integrated into a bus system, this drive must have the appropriate interface contacts and have stored information or rules for the communication in this bus system.

This means that a variety of different drives 15 must be provided for different bus systems or sub-bus systems.

If existing lines are used in a building for a bus system, the choice of a suitable bus system by the number, type and arrangement of these available lines is severely limited. It is then obvious, e.g. to create a bus system by changes of an existing bus system, which is adapted to the respective conditions.

The large variety of types of drives that are adapted to different bus systems or types of communication, high costs for warehousing, maintenance, training and logistics.

From CH 702 995 A1 a Storenmotor with one or more control inputs and with an integrated control electronics is known. One of the control inputs is monitored by the control electronics. If a telegram arrives within a short delay time after the application of a voltage, the control electronics automatically configure themselves for a bus operating mode. Otherwise, the control electronics are configured for a conventional three-limit operating mode.

Such drives can only generally distinguish between bus operation and conventional operation with three limit switches, with signals or voltage changes detected on the control line and evaluated as an indication of bus operation. The communication rules for bus operation are fixed.

An object of the present invention is to provide a drive for disturbances that can be used for more than one bus mode. In this case, the term "bus mode" includes all information essential for digital communication according to specific rules governing the respective bus. This includes, in particular, information on the interfaces of the bus subscribers, such as the number of required interface contacts and their function, information on the required connection lines between interface contacts of bus subscribers, in particular the number of communication lines and their assignment to the interface contacts, information on the power supply, as well as information on the communication regulations, such as telegram definitions. Two different bus modes differ in at least one of these characteristic or essential features.

This object is achieved by a Storen drive and by a method for configuring a Storen drive according to the features of claims 1 and 5.

The drive comprises a motor or generally an actuator with control electronics, which can be connected via an interface with at least one other participant of a bus system and controlled by a higher-level control. The drive interface comprises a plurality of contacts and an interface electronics. The interface electronics is effectively arranged between the contacts of the drive interface on the one hand and the control electronics and the power supply of the drive on the other. The interface electronics may comprise switching elements for establishing connections to the control electronics and / or the power supply unit for one, several or all contacts of the drive interface. The interface electronics may also include a protection circuit to protect the control electronics and / or the power supply from overvoltages.

By means of a configuration device, the drive can be configured for different bus operating modes. Depending on the embodiment of the drive, the configuration may be e.g. manually by means of selector switches or other controls and / or automatically using detected measured variables. In particular, for this purpose, signals at one or more of the interface contacts can be monitored by configuration electronics and compared with comparison variables which are stored in a feature memory. For at least one bus mode at least a part of the essential features is non-volatile stored in this memory memory. These include in particular the telegram definitions to be used or in general the communication regulations.

These communication rules which control the communication between the bus participants and possibly further data can be deleted if necessary and replaced by other rules and data. The drive can be configured in this way for different bus operating modes according to the specifications of different bus systems.

Preferably, characteristic features of several bus modes are stored in the feature memory. The bus mode that should actually be used is called the active bus mode.

The configuration for the operation according to the specifications of a particular bus mode can be factory-programmed or overwritable depending on the configuration of the drive. In particular, a drive at its first start-up or at a later time, e.g. be supplied by a mobile programmer with current processing instructions and / or data for the feature memory. The feature memory may be generally configured as a data and / or program memory. The drive may also include a reset button or other reset means, with which the configuration electronics can be set in a defined initial state.

If at the same time features of more than one bus mode are stored, the selection of one of these bus modes as active bus mode depending on the embodiment of the drive, for example via a selector switch or alternatively automatically, for example by a status query done. For example, a voltage and / or a digital signal can be interrogated at one or more of the contacts of the drive interface as a measured variable. The configuration electronics, which may be formed as part of the control electronics, evaluates this information and determines the corresponding bus mode as active bus mode accordingly. Depending on the design of the drive, such a determination of the active bus operating mode can take place once during its commissioning or periodically or according to other predefinable criteria, for example after a configuration or reset key has been actuated.

In a preferred embodiment, the Storen drive is configurable both for communication via a two-wire interface according to the SMI standard and for communication via only one communication line. These two bus modes differ at least by the number of communication lines used. In a communication according to the SMI standard, the data transmission takes place symmetrically via two communication resp. Data lines. With the initiator bus, fundamentally different telegram definitions can be used than those of the two-wire bus. Alternatively, the same telegram definitions that are also used for two-line communication in accordance with the SMI standard can be used for the initiator bus. In this case, e.g. the second communication contact of the drive interface can be connected via an external bridge to the neutral contact or to a reference conductor contact. The bridge may e.g. be configured as a configuration switch on the drive itself. Alternatively, the bridge may also be formed in a connection cable with connection plugs used for connecting the drive interface to an external control. If the control electronics or the configuration electronics recognize symmetrical signals at two communication inputs during operation, the normal SMI mode is selected as the active bus mode. However, if digital signals can only be detected at one of the communication inputs, the drive interface is configured according to the specifications for the single-line communication type. Optionally, at least some of the contacts of the drive interface may be connected to the remainder of the control electronics via two or more different or differently configurable driver stages. Depending on the active bus operating mode, the driver stages are configured or selected appropriately.

Such configuration methods can be further refined, for example by not only checking on which lines or interface contacts digital communication signals arrive. In addition, these signals can also be compared with stored telegram definitions in order to identify the type of communication or bus mode used and to select the drive as the active bus operating mode.

Optionally, voltages can also be checked in the configuration of the drive. For example, signals can be supplied to the contacts of the drive interface via a protective circuit to the inputs of the control electronics or the configuration device. This first checks the voltage values and then configures the interface for operation according to the detected voltages. This is particularly advantageous for SMI or KNX interfaces, which can be designed both for operation with low voltage and for operation with low voltage.

The contacts for the supply of the drive are usually specified. This applies analogously to the polarity of the supply for DC voltage supplies.

In alternative embodiments of the drive, the configuration device may also be designed to recognize the contacts used for the supply of the drive and / or the polarity of the supply voltage which is applied to these contacts independently. In such drives all contacts are supplied via a protection circuit both the control electronics and the power supply. The drive is designed so that when commissioning first ensured the supply of the control electronics and the supply contacts are detected and assigned.

Of course, the configuration device may also be designed for Storenantrieben with three communication contacts to recognize a conventional 3-limit switch operating mode based on the signals or voltages at these communication contacts and to configure itself for operation according to specifications for this mode of operation. Alternatively, such an operating mode may also be manually, e.g. be adjusted by means of a slide switch.

With reference to figures, the invention will be described in more detail below. Show it:

1 shows a bus subscriber connected to a bus line (prior art),

2 shows a drive device with an SMI connection interface (prior art),

3 shows an arrangement with drives, which are connected via an actuator control with a bus,

4 is a diagram of a drive with a configuration electronics,

5 shows a circuit arrangement for a contact,

6 is an exemplary block diagram of a drive,

Fig. 7 different bus telegrams.

Fig. 1 shows schematically a bus subscriber 1, which is connected to a bus 3 with two bus lines 3a, 3b. The bus subscriber 1 comprises a bus terminal 5 which is connected to the bus 3 via a bus coupler 7. The bus coupler 7 in turn comprises a controller 9, which is connected via a standardized multi-pole user interface 13 to the bus terminal 5 and via further connections to a transmitter module 11. The transmitter module 11 is connected to the bus lines 3a, 3b. The Busankoppler 7 may be located locally separate from the bus terminal 5 or integrated into this. Alternatively, only the transformer module 11 may be formed as a separate unit and only the controller 9 may be integrated into the bus terminal 5. Such arrangements are known from the prior art and are used for example in the KNX bus system, which is widely used in building technology. In such bus systems, bus subscribers 1 connected to the bus 3, such as sensors, actuators and possibly functional models, can communicate with one another. The rules for communication by telegrams are fixed for each bus system and stored in the system software. For the KNX bus system, depending on the version, the communication can take place via a twisted two-wire low-voltage cable, via a 230 VAC low-voltage cable, via Ethernet or via radio links. In the variant shown in FIG. 1, both the supply of the bus subscriber 1 with a DC voltage of typically 29 V and the communication via the two bus lines 3a, 3b. This DC voltage is superimposed on an information AC voltage, the signals being coupled symmetrically to the bus, i.e., there is no fixed datum point of the data line to ground. Changes in the voltage difference between the two communication or data lines 3a, 3b are evaluated in the receivers. This method minimizes the susceptibility to interference.

Fig. 2 shows schematically a drive or Storenantrieb 15 with a drive interface parts 17, which corresponds to the standard of the «standard motor interface», in short also called «SMI» corresponds. This drive interface 17 includes a reverse polarity coded connector housing 18 with five connection contacts, called contacts 19 short. The first contact 19a, also called "l +", and the second contact 19b, also called "I-", are connected to bus lines 3a, 3b, which are designed as communication lines. The middle contact 19c is connected to the protective conductor PS, the fourth contact 19d to the L phase and the fifth contact to the neutral N of the supply voltage, which in the embodiment of the drive 15 shown in FIG. 2 is 230 VAC. The control signals of a higher-level control (not shown) are transmitted via the communication contacts 19a, 19b to a control electronics 27 (FIG. 4) of the drive 15.

In an analogous manner, the SMI standard also defines drives 15 which can be operated with low voltage. In such drives 15 eliminates the middle contact 19c for the protective conductor. The interfaces accordingly comprise only four contacts 19a, 19b, 19d, 19e (not shown) arranged in a polarity reversal manner, wherein the contacts 19a, 19b in turn as differential communication contacts for connecting control lines and the contacts 19d, 19e as supply contacts for connecting a low-voltage source for the power supply are formed.

Fig. 3 shows an arrangement according to the prior art with drives 15 which are connected via an actuator control 21 to the parent bus 3. The actuator control 21 comprises an actuator interface 17 'which can be designed to connect one or more drives 15. For connections according to the SMI standard up to sixteen drives 15 can be connected in parallel to an actuator controller 21, wherein the number n of Verbindungslei obligations in the low-voltage version is five and in the low voltage version four. The drives 15 are therefore not directly coupled to the bus 3, but via a sub-bus system. In the standard motor interface SMI, communication takes place between the actuator control 21 and the connected drive or drives 15 via two communication lines which connect the contacts 19a and 19b of each drive 15 to the actuator control 21. Analogously, the power supply to the drives 15 via two feed lines, which are connected to the contacts 19 d and 19 e of the drives 15. Conventionally, drives 15 are designed only for use in a particular bus system or sub-bus system, the rules for the communication in this system being fixed in control electronics 27 of the drive 15.

Fig. 4 shows schematically simplified a drive 15, which is configurable for use with multiple bus modes or with more than one bus system or sub-bus system. The drive interface 17 comprises a number n of at least 2 contacts 19, wherein at least two of these contacts 19 are connected directly, but preferably indirectly, via an interface electronics 23 to a power supply 25. In the case of an SMI interface 17 according to FIG. 2, these are the contacts 19d and 19a.

The interface electronics 23 is the link between the contacts 19 and the control electronics 27, but can also be considered as part of the control electronics 27 or be partially or fully integrated into the control electronics 27. It operatively connects the contacts 19 to the control electronics 27 and the power supply 25 and may include elements such as direct electrical connection lines, voltage conductors, voltage limiters, rectifiers, switching elements, high, low or bandpasses, impedance converters, driver stages and the like. The simplest type of such an operative connection is a direct electrical connection line.

The power supply 25 generates at least one operating voltage and supplies the control electronics 27 and optionally other components of the drive 15 with energy. The power supply 25 may be included in the broader sense of the control electronics 27. The drive 15 further comprises an actuator 29, preferably an electric motor. Alternatively, the actuator 29 could, for example, include an electrical switching element or a valve for influencing a pneumatic or hydraulic drive. The power supply to the actuator 29 takes place, depending on the configuration of the drive 15 directly via the corresponding contacts 19 of the drive interface 17, wherein optionally the interface electronics 23 is interposed. Alternatively, the power supply to the actuator 29 can also be performed as shown in FIG. 4 via the power supply unit 25 or ensured by the power supply unit 25. The control electronics 27 controls or controls or regulates the energy supply to the actuator 29 in all variants.

To adapt to different bus modes, the drive 15 comprises a configuration device. The configuration device may comprise configuration means which are designed to set or adapt the interface electronics 23 for communication in accordance with the specifications of at least one bus mode. These configuration means may comprise one or more of the elements listed below; - Mechanical and / or electronic switching elements with which at least one input and / or output or port of the control electronics 27 with one of the contacts 19 or with a derived from the supply voltage reference potential is operatively connected. - Mechanical and / or electronic switching elements for effectively connecting at least one of the contacts 19 with the power supply 25, - Protection circuit for limiting the voltage at the inputs of the control electronics 27, - Driver circuit for adjusting parameters such as impedance and voltage at the ports of the control electronics 27th

The configuration of the interface electronics 23 for a selected active bus mode may vary depending on the type of drive 15, e.g. directly, by means of switches or other manually operated adjusting means (not shown). The configuration device comprises a part of the control electronics 27 called configuration electronics 31. The configuration of the interface electronics 23 preferably takes place through this configuration electronics 31. The interface electronics 23 can also be designed as part of this configuration electronics 31.

The configuration electronics 31 comprises a feature memory 33 in which characteristic features of at least one bus system or at least one bus mode can be stored. Examples of such characteristic features are: number of communication lines; - Assignment of communication lines and contacts 19 is the drive interface 17; - Use of communication contacts exclusively for the transmission of data or in addition to the power supply of the drive 15; - Information on the type of communication, such as synchronous or asynchronous, uni- or bidirectional data transmission, serial or parallel, symmetric or asymmetric data transmission; - Communication rules and telegram definitions, in particular also processing instructions or programs or program parts for controlling the drive 15 using such telegram definitions; - Information on the configuration of inputs and / or outputs such. Impedances and / or required or permissible voltages or information on reference conductors.

The storage of characteristic features is carried out so that an unambiguous assignment of these features to each Busbetriebsart is recognizable. This can be done, for example, by using different memory areas for the features of each bus mode or by associating a unique identifier of the respective bus mode for each stored feature.

In a first category of drives 15 it is assumed that for each bus system to which the drive 15 is to be connected, the terminal assignment of the drive interface 17 is fixed and that the corresponding contacts 19 are correctly connected to the bus 3.

The power supply or power supply of the drive 15 is carried out in this category of drives 15 always on fixed predetermined supply contacts 19d, 19e. If both bus systems are provided which are operated with low voltage, as well as those which are operated with low voltage, at least the supply contacts 19d, 19e are formed galvanically isolated from the remaining contacts 19 and according to applicable safety standards. At least those contacts 19 which are used as communication contacts in the intended bus operating modes are connected to ports or inputs and / or outputs of a data and / or signal processing unit of the control electronics 27 via the interface electronics 23. Of course, this also applies to a single contact 19. As a rule, the contacts 19 can be used as inputs and outputs for bidirectional communication by being connected to the control electronics 27 via driver stages and impedance or level converters, for example. Via driver stages, the contacts 19 may be e.g. be connected to the operating voltage or other potentials.

Depending on the embodiment of the drive 15, the configuration of contacts 19 as communication contacts 19a, 19b can be made during commissioning, for example, directly by means of switches by a person. Alternatively, the interface electronics 23 may also comprise electronic switches which are suitably adjusted by the configuration electronics 31, in particular on the basis of features which are stored in the feature memory 33 for at least one specific bus operating mode. The desired bus mode, in turn, can be e.g. be pre-selected by a person using adjustment switches or other controls 28. Alternatively, the configuration electronics 31 may also include processing instructions that are designed for automatically identifying or recognizing the respectively active bus operating mode based on potentials and / or signals at one or more of the contacts 19. As soon as the drive 15 is connected to a bus system and is supplied with a supply voltage, the signals at the contacts 19 are monitored. By comparing the potentials and / or signals at these contacts 19 with stored characteristic features of one or more bus modes, the configuration electronics 31 determines the respective active bus mode and automatically configures the control electronics 27 and / or the interface electronics 23 for communication according to the specifications for that bus mode. This default setting is preferably stored and maintained non-volatile. The reset to the original state may e.g. be effected by a designed as a reset switch control element 28. Alternatively, the configuration electronics 31 may monitor the signals at the contacts 19 also permanently, periodically or sporadically and put the control electronics 27 and / or the interface electronics 23 back to the ground state as soon as the detected features no longer correspond to the current configuration.

Fig. 5 shows an example of a circuit arrangement for a contact 19, which is connected to the power supply 25 via a diode 35. In addition, this contact 19 is connected via a voltage divider comprising two resistors 37 and a decoupling capacitor 39 to a port of the control electronics 27. This circuit belongs to the interface electronics 23 and allows the simultaneous use of the contact 19 both as a feed contact 19d and as a communication contact 19a, 19b. When feeding, it is assumed that the neutral or the ground potential is correctly connected to the corresponding contact 19e. The other contacts 19, if they are designed according to FIG. 5, can be used in any way for feeding or for communication.

Fig. 6 shows schematically an exemplary embodiment of a drive 15 designed for use with a two-conductor bus according to the SMI standard and for use with an initiator bus, the initiator bus utilizing the same telegram definitions as the two-conductor bus. The interface electronics 23 comprises a plurality of circuit units which each connect one or more contacts 19 to different ports of the control electronics 27. One or more of the contacts 13 can be in this way via different circuit units with multiple ports in operative connection. In the exemplary block diagram illustrated in FIG. 6, the communication contacts 19a, 19b and the supply contact 19d are connected via level converters 23a to three ports of the control electronics 21. In addition, the two communication contacts 19a, 19b are connected via drivers 23b to further ports of the control electronics 27. The communication contacts 19a, 19b and the feed contact 19d are additionally connected to the power supply 25 via a rectifier circuit 25a. The supply of the control electronics 27 can take place via any of the three contacts 19a, 19b, 19d, it being assumed that the neutral conductor or the reference potential is applied to the contact 19e. The control electronics 27 determines at which of the three contacts 19a, 19b, 19d, the supply voltage is applied and controls the motor or the actuator 29 in accordance with a network selection circuit 29a, which switches the contact 19, at which the supply voltage, as a feed contact. In this category of 15 Storenantrieben the pin assignment is no longer mandatory for each bus mode.

The control of the actuator 29 in response to control signals of the control electronics 27 can. e.g. be carried out via a phase control 29b. Optionally, the manipulated variable of the actuator 29 can be detected by means of a suitable sensor 34 and monitored by the control electronics 27. For example, the rotational position of a motor can be determined by means of an incremental or absolute rotary encoder. Receives the control electronics 27 of a Storenantriebs 15 with an electric motor as an actuator 29 via the associated bus, for. a command to start a particular

Rotary position (setpoint), it can control the speed of the motor as a function of the difference between the measured variable (actual variable) detected by the sensor and the setpoint variable. The algorithms for controlling or regulating the actuator 29 and for communicating via the bus system are defined in the control electronics 27.

Optionally, the control electronics 27 via one or more controls 28, for example via coding or reset button, are affected. Optionally, the control electronics 27 and / or the power supply 25 via a secondary drive interface 17a with one or more other devices and / or controls are in operative connection, for example with a wind sensor, a light sensor or a control button.

7 shows schematically bus telegrams of different bus systems. These may comprise one or more sequences or packets 41 of different lengths, this length being determined by the amount of data or the number of N bits and / or bytes. For unambiguous recognition or identification of a connected bus system or a bus mode used, the control electronics 27 can monitor the signals at one or more, preferably at all contacts 19 and compare them with comparison variables which are stored in the feature memory 33. In particular, to identify a bus mode on the basis of received messages, one or more of the following features can be checked: number of bits or bytes in total or per packet 41, control byte, start sequence, checksum, end sequence, characteristic features such as specific bit sequences in the message as a whole or in one or more Packages 41, Number of communication lines used.

The control electronics 27 comprises processing instructions or programs which compare the measured quantities at one or more of the contacts 13 with stored comparison variables. In this case, it is checked whether the measured variables have certain features required for one of the stored bus operating modes, which uniquely characterize this bus operating mode. If so, the control electronics 27 selects this bus mode as the active bus mode and then communicates according to the stored rules for that active bus mode.

Legend of the Reference Numerals I Bus Subscriber 3 Bus 3a, 3b Bus Lines 5 Bus Terminal 7 Bus Coupler 9 Controller II Transmitter Module 13 User Interface 15 Drive, Storing Drive 17 Drive Interface 17 'Actuator Interface 17a Secondary Drive Interface 19, 19a-e Contacts 21 Actuator Control 23 Interface Electronics 25 Power Supply 27 Control Electronics 28 Control elements 29 Actuator 31 Configuration electronics 33 Feature memory

Claims (8)

34 Sensor 35 Diode 37 Resistors 39 Decoupling capacitor 41 packages Patent claims 1. Storen drive (15), comprising an actuator (29), a power supply (25), an electronic control unit (27) with a trained for communication according to the specifications of a bus mode communication device and at least two electrical contacts (19), wherein at least two of these Contacts (19) as supply contacts (19d, 19e) are formed for the power supply and operatively connected to the power supply (25), and wherein at least one of these contacts (19) as a communication contact (19a, 19b) formed and operatively connected to the control electronics (27 ), characterized by a configuration device for configuring the Storenantriebs (15) for communication according to characteristics of different types of communication. 2. Storen drive according to claim 1, characterized in that the communication device comprises a configuration electronics (31) with a feature memory (33) for storing features of at least one type of communication. 3. Storen drive according to claim 2, characterized in that the configuration electronics (31) for identifying at least one type of communication on the basis of a) communication signals to at least one of the contacts (19) and / or b) signals which can be influenced by setting switch is formed. 4. Storen drive according to claim 3, characterized in that the configuration electronics (31) is operatively connected to an interface electronics (23) or this includes, and that at least one of the contacts (19) for operation according to stored specifications for at least one communication is configurable , 5. A method for configuring a Storenantriebs (15) according to claim 4, characterized in that the configuration electronics (31) automatically detects the type of communication on the basis of the communication or contacts used for the communication (19) and the interface electronics (23) configured accordingly. 6. The method of claim 5, wherein in one of the communication types data are sent and received symmetrically via two contacts (19), and wherein in another communication data only via one of these contacts (19) are sent and received, characterized in that the Control electronics (27) checks whether the measured variable at one of the two contacts (19) has a predetermined potential. 7. The method according to any one of claims 5 or 6, characterized in that the automatic configuration for a particular type of communication is activated only during the first startup and / or upon actuation of a reset button. 8. The method according to any one of claims 5 to 7, characterized in that the configuration electronics (31) feed contacts (19d, 19e) and / or communication contacts (19a, 19b) automatically detects and configured accordingly.