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WO1998037622A1 - Unite d'entrainement commandee par microprocesseur - Google Patents

Unite d'entrainement commandee par microprocesseur Download PDF

Info

Publication number
WO1998037622A1
WO1998037622A1 PCT/DK1998/000064 DK9800064W WO9837622A1 WO 1998037622 A1 WO1998037622 A1 WO 1998037622A1 DK 9800064 W DK9800064 W DK 9800064W WO 9837622 A1 WO9837622 A1 WO 9837622A1
Authority
WO
WIPO (PCT)
Prior art keywords
motor
current
drive unit
microprocessor
voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/DK1998/000064
Other languages
Danish (da)
English (en)
Inventor
Jesper Darum
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.)
VKR Holding AS
Velux Industri AS
Original Assignee
VKR Holding AS
Velux Industri AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by VKR Holding AS, Velux Industri AS filed Critical VKR Holding AS
Priority to AU59827/98A priority Critical patent/AU5982798A/en
Priority to EP98902966A priority patent/EP1012959A1/fr
Publication of WO1998037622A1 publication Critical patent/WO1998037622A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/0833—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for electric motors with control arrangements
    • H02H7/0838—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for electric motors with control arrangements with H-bridge circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
    • H02H7/0851—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load for motors actuating a movable member between two end positions, e.g. detecting an end position or obstruction by overload signal

Definitions

  • the present invention relates to a drive unit for electrically operated devices such as doors, windows, screening devices and the like, comprising a drive unit casing designed for stationary mounting and containing a motion transfer member designed for connection with the operated device and in engagement with a reversible drive motor with an associated motor control circuit which drive unit is designed as a program-controlled unit, the motor control circuit containing a microprocessor with associated memory with stored operating parameters.
  • Such protective devices are, however, unsuitable for many purposes of use, as during a per se normal operation of a drive unit, momentary and rather heavy current increases can occur. This is e.g. the case with opening/closing drive units for doors and windows where during the last part of the closing movement a considerable seal pressure must often be overcome.
  • DE-A1-42 34 501 relates to a motor control for door openers which are based on a redundancy concept with two independently working microprocessors which in two different ways calculate the driving torque of the motor.
  • One microprocessor calculates the torque from the motor current supplied from an output stage .
  • the second processor calculates the torque from the motor characteristic and supplies data on load and revolutions per minute. Also in this processor the exceeding of a stored maximum torque will as a rule cause a disconnection of the motor via a second disconnecting stage.
  • a drive unit of the stated kind which is characterized in that the microprocessor is programmed for maintaining an essentially constant speed of the motor at varying loads, however, such that a predetermined maximum supply current for the drive unit is not exceeded, the stored operating parameters comprising said predetermined maximum supply current for the drive motor of the unit, that means for monitoring voltage and current to the motor are connected to the microprocessor, and that the microprocessor is programmed for calculation of the current maximum current consumption on the basis of the measured motor current and, when exceeding the stored maximum supply current, for initiating an adjustment of the motor voltage for reduction of the supply current to the stored maximum value .
  • Fig. 1 is a block diagram showing the principal components of an embodiment of a drive unit according to the invention and meant for the use as window drive unit,
  • Fig. 2 shows the design of a circuit for limitation of the current consumption of the drive unit
  • Fig. 3 shows a graphic representation of the adjustment function
  • Fig. 4 shows the reprogramming of the drive unit by connection to a external programming device
  • Fig. 5 shows the design of a circuit in the drive unit for the use by data exchange between the drive unit and the external programming device .
  • the drive unit according to the invention is in the embodiment shown on the drawing designed as an self-contained, autonomous unit to be used e.g. in connection with a chain drive unit of the kind which is well-known for opening and closing of different window types, in particular roof windows.
  • the drive unit comprises as principal components a reversible electrical drive motor 1 which via a built-in transmission 2 is connected to a drive member for the adjustment member of the drive unit, e.g. a chain wheel 3 which is in engagement with a chain 4 which at its one end is connected to a window frame whereas the motor 1, the transmission 2 and the chain wheel 3 together with the chain part 4 in engagement therewith and the electronic components in the drive unit are built into a casing 5 which is connected with the frame construction of the window.
  • a reversible electrical drive motor 1 which via a built-in transmission 2 is connected to a drive member for the adjustment member of the drive unit, e.g. a chain wheel 3 which is in engagement with a chain 4 which at its one end is connected to a window frame whereas the motor 1, the transmission 2 and the chain wheel 3 together with the chain part 4 in engagement therewith and the electronic components in the drive unit are built into a casing 5 which is connected with the frame construction of the window.
  • the drive unit contains a microprocessor 6 with control programs stored in an internal ROM.
  • the microprocessor 6 controls the control of all operating functions.
  • a memory 7 which in the shown embodiment is constituted by a reprogrammable EEPROM
  • the current supply to the drive unit is effected via two current supply conductors 8 and 9 which can be connected with an operation keyboard 10 and in the drive unit are connected to a voltage regulator 11 providing a supply voltage Vcc to the microprocessor 6 and other electronic components in the drive unit and furthermore via a direction interface circuit 12 and a data read-out circuit 13 are connected to the microprocessor 6.
  • the current supply conductors 8 and 9 are furthermore connected to a motor driver circuit 14 controlled by the microprocessor 6 and controlling connection and disconnection together with the rotating direction of the motor 1.
  • the microprocessor 6 can moreover be connected with an IR receiver 15 for the use in remote control of the drive unit from an IR remote control unit of a kind known per se.
  • the direction interface circuit 12 connected with the current supply conductors 8 and 9 contains, as shown in Fig. 5, two RC couplings 18 and 19 each in connection with one of the current supply conductors 8 and 9.
  • the direction interface circuit 12 emits to two inputs 20 and 21 of the microprocessor 6 direction control signals which in the normal operating condition are unambiguously determined by the polarity of the current supply conductors 8 and 9 and determine the rotating direction of the motor 1.
  • the capacitor in the RC coupling 18 is charged through the associated resistance, whereas the capacitor in the RC coupling 19 is discharged through the associated resistance whereby a direction control signal with the logical value "1" is emitted to the input 20, .whereas a direction control signal with logical value "0" is emitted to the input 21.
  • the current supply conductor 9 is positive compared to the current supply conductor 8, the direction control signals on the inputs 20 and 21 assume logical values "0" and "1", respectively.
  • the microprocessor 6 controls the rotating direction for the motor 1 which is a DC motor, by activiation of the one of the two pairs of the field effect transistors 25, 26 or 27, 28 in the driver circuit 14 shown in Fig. 2, whereas the current and voltage to the motor are controlled by pulse width modulation in a PWM modulator 29 con- nected between the microprocessor 6 and the field effect transistors 25, 26 or 27, 28.
  • the speed of the DC motor 1 determined by the motor voltage is monitored by the microprocessor by measurements of the motor voltage by means of a resistor network with resistances 30, 31, and 32 whereas the torque of the motor is monitored by voltage measurement via a current sensor resistance 33.
  • the voltage measured by means of the resistor network 29- 31 is compensated for the voltage drop over the internal resistance of the motor calculated from the measured motor current .
  • the current drawn from the current supply conductors 8 and 9 can thus be calculated by multiplication of the measured motor current by the duty cycle of the pulse width modulated signal.
  • the program control in the microprocessor uses an adjustment algorithm which primarily tends to maintain a constant motor speed even though the motor is subjected to varying loads but such that a stored maximum current consumption is not exceeded.
  • Ve is the EMF of the motor
  • Im is the motor current
  • Rm is the internal resistance of the motor
  • k a constant which for the stability is smaller than 1.
  • the graph RPM shows the rotating speed of the motor
  • the graph Im the motor current
  • the graph 1st the current consumption
  • the graph "duty" the duty cycle of the pulse width modulated signal.
  • the drive unit in the shown embodiment is designed for being reprogrammed through data exchange with an external programming unit which, as shown in Fig. 4, may be a portable PC 16 which via an interface unit 17 is connected to the current supply conductors 8 and 9 which in the operating condition are supplied with a DC voltage, e.g. a full-wave rectified supply voltage the polarity of which determines the rotating direction of the reversible motor 1 of the drive unit .
  • an external programming unit which, as shown in Fig. 4, may be a portable PC 16 which via an interface unit 17 is connected to the current supply conductors 8 and 9 which in the operating condition are supplied with a DC voltage, e.g. a full-wave rectified supply voltage the polarity of which determines the rotating direction of the reversible motor 1 of the drive unit .
  • the interface unit 17 is adapted for switching the polarity of the current supply conductors 8 and 9 at a frequency which is considerably higher than the mains frequency, e.g. 10 kHz, whereby the drive unit as explained in the following is brought into a programming or data exchanging condition deviating from the normal operating condition.
  • the capacitors in both RC couplings 18 and 19 are discharged such that the signals emitted to the inputs 20 and 21 of the microprocessor both assume a low level corresponding to logical "0" whereby the microprocessor is brought into the programming or data exchange condition.
  • the microprocessor can only be brought back to normal operating condition by a separate reset operation, e.g. by giving an end command on the portable PC 16.
  • PC 16 either be transferred data representing predetermined parameter values from this to the microprocessor 6 and the EEPROM 7 connected thereto or there can be read out stored data in the EEPROM 7 or the microprocessor 6 to the portable PC 16.
  • the data transfer from the portable PC 16 to the microprocessor 6 can e.g. be effected in that the commands entered into the portable PC 16 in the interface unit 17 are converted into bit patterns transferred to the drive unit changing the polarity of the current supply conductors 8 and 9 by a suitably low frequency corresponding to a bit rate suitable for reception and decoding of the information.
  • data can be transferred to the interface unit 17 by a standard NRZ bit coding from the serial port on the portable PC 16.
  • the transferred bit patterns can thus be decoded by the RC couplings 18 and 19 and from there be delivered to the inputs 20 and 21 of the microprocessor 6 instead of the direction control signals supplied in the normal operating condition.
  • a terminal 22 is connected to the EEPROM 7.
  • the transmission protocol for transfer of parameter information from the portable PC 16 to the microprocessor 6 can be organized in frames or pages of each 8 bytes consisting of a serially transferred bit string of 8 bits.
  • a byte is first transferred in the first frame with an instruction or command about started transmission followed by a byte identifying the parameter which is subsequently read and serves for addressing when reading in the EEPROM 7 and one or more control bytes .
  • the actual parameter information is transferred in the 8 bytes in the following frame upon which control frame ending information is transferred in the next frame.
  • the transferred parameter data are buffered in a RAM in the microprocessor before being stored in the EEPROM 7 which e.g. can have a capacity of 16 frames or pages of 8 bytes or a total of 128 bytes.
  • Programming and reprogramming of relevant operating parameters can thus be effected in connection with the production of drive units according to the invention and at later times, e.g. in connection with the end mounting.
  • the programming can typically comprise serial numbers and calibration constants together with certain function parameters, whereas in the end mounting it will typically be programming of operating parameters which can vary in dependence of the type of window, for which the drive unit is to be used and the working loads to which the drive unit can be expected to be subjected, and which typically can comprise maximum pull, speed or power or maximum opening degree for the window.
  • a read-out data from the drive unit to the portable PC 16 can also be effected in the programming or data exchange condition, e.g. with the object of verifying the programmed operating parameters or reading out data which are logged in the drive unit .
  • the data read-out is effected from the microprocessor 6 by connecting and disconnecting the load resistance 23 shown in Fig. 3 by means of a transistor switch 24 and in accordance with the bit pattern required to be read out.
  • the thus caused changes in the current drawn by the drive unit from the current supply conductors 8 and 9 can in the interface unit 17 be registered and converted to a digital signal which after a suitable level conversion can be delivered to the serial port on the portable PC 16.
  • the data read-out is effected by transfer of an instruction or command from the portable PC.

Landscapes

  • Power-Operated Mechanisms For Wings (AREA)

Abstract

Une unité d'entraînement pour des portes, des fenêtres, des grilles ou autres dispositifs actionnés électriquement comprend un boîtier (5) contenant un élément de transfert de mouvement (4) relié à un moteur d'entraînement réversible (1) associé à un circuit de commande du moteur. L'unité d'entraînement est conçue comme une unité commandée par un programme à l'aide d'un microprocesseur (6) ayant une mémoire associée contenant parmi plusieurs paramètres de fonctionnement du moteur d'entraînement (1) la valeur paramétrique du courant maximum fourni. Le microprocesseur est programmé pour calculer l'intensité maximale du courant en fonction de l'intensité du courant mesuré du moteur, et également pour réduire la tension du moteur et par conséquent la vitesse du moteur lorsque la consommation maximale de courant est atteinte.
PCT/DK1998/000064 1997-02-20 1998-02-18 Unite d'entrainement commandee par microprocesseur Ceased WO1998037622A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU59827/98A AU5982798A (en) 1997-02-20 1998-02-18 A microprocessor-controlled drive unit with limitation of current consumption for electrically operated devices
EP98902966A EP1012959A1 (fr) 1997-02-20 1998-02-18 Unite d'entrainement commandee par microprocesseur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK0178/97 1997-02-20
DK17897A DK17897A (da) 1997-02-20 1997-02-20 Microprocessorstyret operatorenhed med strømforbrugsbegrænsning til elektrisk manøvrerbare indretninger

Publications (1)

Publication Number Publication Date
WO1998037622A1 true WO1998037622A1 (fr) 1998-08-27

Family

ID=8090655

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1998/000064 Ceased WO1998037622A1 (fr) 1997-02-20 1998-02-18 Unite d'entrainement commandee par microprocesseur

Country Status (4)

Country Link
EP (1) EP1012959A1 (fr)
AU (1) AU5982798A (fr)
DK (1) DK17897A (fr)
WO (1) WO1998037622A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1046971A3 (fr) * 1999-04-19 2003-01-15 Phoenix Contact GmbH & Co. KG Dispositif de commande électronique
US6732018B2 (en) 2000-01-31 2004-05-04 Turnils Ab Awning assembly and control system
FR3036899A1 (fr) * 2015-05-26 2016-12-02 Faurecia Sieges Automobile Commande d'un moteur de reglage de siege pour vehicule automobile

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2189906A (en) * 1986-04-16 1987-11-04 Byrne & Davidson Doors Door controller
GB2202967A (en) * 1987-02-16 1988-10-05 Westinghouse Brake & Signal Door control system
DE4234501A1 (de) * 1992-10-13 1994-04-14 Tuerautomation Fehraltorf Ag F Steuerungsverfahren zur Begrenzung der Antriebskraft eines Antriebs, insbesondere eines Tür- oder Drehflügelantriebs sowie zugehörige Sicherheitsschaltung
EP0650267A1 (fr) * 1993-10-22 1995-04-26 Gay Frères Vente et Exportation S.A. Système de transmission
EP0735665A2 (fr) * 1995-03-30 1996-10-02 Samsung Heavy Industries Co., Ltd Appareil de commande à courant pour moteur à courant continu

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2189906A (en) * 1986-04-16 1987-11-04 Byrne & Davidson Doors Door controller
GB2202967A (en) * 1987-02-16 1988-10-05 Westinghouse Brake & Signal Door control system
DE4234501A1 (de) * 1992-10-13 1994-04-14 Tuerautomation Fehraltorf Ag F Steuerungsverfahren zur Begrenzung der Antriebskraft eines Antriebs, insbesondere eines Tür- oder Drehflügelantriebs sowie zugehörige Sicherheitsschaltung
EP0650267A1 (fr) * 1993-10-22 1995-04-26 Gay Frères Vente et Exportation S.A. Système de transmission
EP0735665A2 (fr) * 1995-03-30 1996-10-02 Samsung Heavy Industries Co., Ltd Appareil de commande à courant pour moteur à courant continu

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1046971A3 (fr) * 1999-04-19 2003-01-15 Phoenix Contact GmbH & Co. KG Dispositif de commande électronique
US6732018B2 (en) 2000-01-31 2004-05-04 Turnils Ab Awning assembly and control system
FR3036899A1 (fr) * 2015-05-26 2016-12-02 Faurecia Sieges Automobile Commande d'un moteur de reglage de siege pour vehicule automobile

Also Published As

Publication number Publication date
DK17897A (da) 1998-08-21
EP1012959A1 (fr) 2000-06-28
AU5982798A (en) 1998-09-09

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