EP0471328A1 - Elektrisches Schaltgerät - Google Patents

Elektrisches Schaltgerät Download PDF

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Publication number
EP0471328A1
EP0471328A1 EP91113529A EP91113529A EP0471328A1 EP 0471328 A1 EP0471328 A1 EP 0471328A1 EP 91113529 A EP91113529 A EP 91113529A EP 91113529 A EP91113529 A EP 91113529A EP 0471328 A1 EP0471328 A1 EP 0471328A1
Authority
EP
European Patent Office
Prior art keywords
switching device
time
electrical switching
value
connection
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.)
Withdrawn
Application number
EP91113529A
Other languages
German (de)
English (en)
French (fr)
Inventor
Ernst Ludwig Zahn
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0471328A1 publication Critical patent/EP0471328A1/de
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G15/00—Time-pieces comprising means to be operated at preselected times or after preselected time intervals
    • G04G15/006—Time-pieces comprising means to be operated at preselected times or after preselected time intervals for operating at a number of different times

Definitions

  • the present invention relates to an electrical switching device for controlling one or more electrically operated connection devices, the switching device having access and outlet contacts, a time measuring unit and at least one switching element which has at least one off and one on position which is set as a function of the time measuring unit is.
  • time switch contains, as the name suggests, a clock, the course of which a switch is actuated in such a way that it is closed during predeterminable periods and open during other periods. In this way, a current flow through the inlet and outlet contacts is either made possible or prevented.
  • a deliberate limitation of consumption is of course not only limited to television sets, this also applies analogously to video equipment, radio equipment, record players and cassette recorders as well as home computers and much more.
  • the present invention is based on the need to control the consumption with the aid of such switching devices or the operation of such connecting devices for a predeterminable total period, e.g. during a day, a week or a month, for a user to a certain maximum time that can also be specified, for example, two hours a day, 15 hours a week or 50 hours a month or any other predetermined time frame that a Person either gives in advance himself or who - for example in a family - can be discussed and agreed together beforehand.
  • the invention proposes that the switching device has at least one memory in which at least one value corresponding to a limit time can be entered, that a device is provided which detects the time cumulatively during the Current for operating the electrical connection device flows via the input or output contacts, that a comparison circuit is provided which compares the cumulative value with the value for the limit time and which interrupts the current flow through the input / output contacts as soon as the cumulative value has the value for the time limit.
  • a limit time of 15 hours is specified, which is based on a time period of e.g. one week.
  • This time period can be fixed in the switching device, but can also be changed or preprogrammed by the respective user.
  • the starting or starting values of the time measuring unit and the device for cumulatively recording the operating times are expediently assumed to be zero.
  • the time measuring unit begins to run from the time the connecting device is put into operation for the first time and at the same time detects the operating time, which is defined by the fact that a current flows through the input and output contacts that is required to operate the connecting device connected downstream.
  • a limit value circuit can be provided which disregards a small current through the input and output contacts, which corresponds, for example, to the so-called "stand-by" circuit, so that only real operating times are recorded.
  • the connection device which is supplied with current via the contacts of the switching device, can in principle now be operated and switched on and off as desired, the time measuring unit continuing to run and adding up the respective operating times. As soon as the sum of the operating times has reached the specified limit time, whereby the specified time period (e.g. one week) has not yet expired, the current flow through the input and output contacts is interrupted by the switching device. It is then no longer possible to continue operating the connection device until the specified time period has expired and the value for the cumulative operating time has returned to its initial value, i.e. to zero.
  • the specified time period e.g. one week
  • connection device This leads to a more conscious handling of the connection device in question and also saves any discussion about whether the connection device should be switched on at a certain time or not.
  • connection device For the sake of simplicity of description, only the example of a television set is considered in the following, and corresponding considerations can also be readily transferred to other connection devices in consumer electronics or the like.
  • the memory has several memory locations for the acquisition of several values for the limit time, each independently of the other. These different time limits can be assigned to different users. Care is taken, of course, that the relevant operating times are always assigned to the respective user, who can have access to the switching device, for example with a certain key or the like. In the preferred embodiment of the invention, however, it is provided that a code selection circuit is provided, the cumulative value of the operating time being assigned to a code to be entered at the start of the start-up. If, in addition, each code is assigned its own limit value memory location, different users can operate the connection device for different lengths of time until their personal user time is applied within the specified time period.
  • the switching device according to the invention is integrated in a connection device for entertainment electronics. It can be particularly expedient if the switching device has input and output contacts for secondary voltages. This makes any manipulation attempts very difficult. If such a switching device is only integrated into the power supply cable or into the mains connection of the connection device, it can easily be deactivated, for example by opening the housing or by exchanging the power cable or by bridging the switching device. However, if secondary voltages required for the operation of the television set or the like are also switched via the switching device, the switching device cannot be manipulated simply by exchanging the mains connection.
  • This input keypad can also have keys or switches for switching over to a programmable state.
  • a circuit should be provided in such a way that for the triggering of the programming functions either the prior entry of a certain code number is required, which is only known to a person who has a corresponding monitoring function, or the keypad should be divided such that in Normal state, only the keys required for entering the user codes are accessible, but not any keys or switches that set the programming state.
  • the latter can be located in a lockable part of the switchgear housing.
  • circuits can also be provided inside the switching device, which ensure that e.g. the time period once entered can only be changed at longer intervals.
  • a magnetic stripe reader could also be arranged on the switching device.
  • each user would get their own magnetic card on which a corresponding code is magnetically stored, which is assigned to the respective user.
  • a magnetic stripe could also contain information about the limit time.
  • usage times that have already accumulated could also be stored on the magnetic stripe.
  • a display for stored data such as limit time, predefined time period and cumulative operating time together with the associated code is also expedient, so that the respective user can easily recognize how much remaining usage time is still available to him during a predefined time period.
  • the switching device is integrated in a power cord that can be plugged in on both sides.
  • the connector connecting the switching device and the consumer device (television set) should expediently have a special shape, so that such a power cord is not readily interchangeable.
  • the switching device can also have input and output contacts for several different devices.
  • the cumulative operating times are recorded separately for the different demand devices. It would therefore be conceivable that a television set and a home computer are connected to such a switching device. In this way, for example, a twice as high limit time can be set for the home computer as for the television set. Likewise, you can also set a maximum time for the cumulative operating times of the two connection devices together and also differentiate the times rate. If, for example, the total time spent with these connection devices per week should not exceed 30 hours, but on the other hand television consumption should in any case be limited to 15 hours, a maximum time of 15 hours could be set, but the operating times of the computer should be weighted by a factor of 1/2 so that the 15-hour time limit corresponds to a computer operating time of 30 hours. It can then also be mixed in such a way that the operating time can be used with a 5-hour television and 20-hour computer, with a 10-hour television and 10-hour computer or only with a 15-hour television.
  • An embodiment of the invention is particularly expedient in which the switching device is integrated in a multiple power cable.
  • a power cord has a connection to the AC network, but several outgoing cables for connection to different consumers.
  • Special plugs should also be provided here, or lockable plugs that can only be released with a key or special tool to prevent manipulation.
  • Conventional microprocessors can then easily perform the various functions for a whole series of such connection devices, a code being assigned to an individual user and different or differently weighted operating times of the respective connection devices being recorded for this code, which are then either used for respective connection device set limit times or be compared with a uniform limit time for all connection devices together.
  • the time measuring unit used in such a switching device is expediently a so-called real-time clock, the power supply of which should take place via an accumulator or a battery, an accumulator having the advantage that it can be continuously recharged automatically by connection to electrical consumer devices.
  • 20 denotes a housing which accommodates the majority of the individual, schematically represented components in its interior.
  • the individual components are not necessarily discrete components, but can also be integral components, e.g. a microprocessor.
  • the power pack of the rechargeable battery 14 expediently contains a circuit which only initiates a charging process for the rechargeable battery when its voltage has dropped below a certain minimum value and then charges the rechargeable battery for a predetermined period of time.
  • the current measuring element 22 detects a current flowing through the line and sends a corresponding signal via line 21 to the clock 3, depending on whether the current is below or above a predetermined limit value.
  • the time duration of the current flow recorded by the clock 3 is passed on to the operating hours counter 6 via the line 23.
  • the operating hours counter 6 can also detect the current flow directly via line 21 'from a further current measuring element, not shown.
  • the clock 3 sends a signal to the zero counter 18 via the line 24 after a predetermined period of time, which then in turn resets the value accumulated in the operating hours counter 6 to zero.
  • the components 7 to 11 framed with dashed lines are all programmable, ie they can be set to specific, desired values. In the following, these components are briefly referred to as "memories".
  • a number is entered in the limit time memory 7, which corresponds to the maximum permissible number of operating hours during a time period entered in the time period memory 8.
  • the value entered in the time period memory 8 is compared by the reset element 18 with the time measured by the clock 3, the reset element 18, as already mentioned, resetting the operating hours counter 6 to zero after the predetermined time period has expired.
  • the code memory 9 is also connected via connections, not shown connected to the time limit memory 7, so that each code number can be assigned a specific, individual time limit.
  • the component 12 denotes an actuating element for setting the clock 3.
  • the component 12 is a, preferably electromagnetically operated time lock for a lock 13.
  • the duration of the time lock can be entered via the time lock memory 11.
  • the time lock memory 11 is at zero, the time lock 12 thus keeps the lock 13 open, so that the housing 20 of the switching device can be opened.
  • the desired values are then entered into the memory elements 7 to 11.
  • a relatively small value can initially be entered in the time lock memory 11, so that the housing can be opened again after a correspondingly short time and the memory elements 7 to 10 can be reset or programmed.
  • the programming of the memory elements 7, 8, 10 and 11 can also be blocked by the code memory in such a way that the values stored in them can only be changed when a specific code has been entered in the code memory 9.
  • the time lock memory 11 can be programmed with a value which preferably corresponds to a whole multiple of the time period provided in the memory 8. Specifically, this means that once the decision is made for a maximum limit time within the desired time period and the housing 20 is closed, this housing 20 can no longer be opened to change the stored values until a period of time has passed which Time lock memory 11 corresponds to the stored value. After you have consciously decided on certain values and time limits, you can no longer manipulate these values in the short term, but have to make do with the set values over the specified period.
  • the code number of a user is entered via the input unit 16 and checked by the code number memory, which closes the switch 4 for continuity if it corresponds to a stored code number.
  • the limit time assigned to this code number is compared in the limit time memory 7 with the time associated with this code number in the operating hours counter 6 and added up during the current time period. If the numerical value of the time accumulated in the operating hours counter 6 is less than the limit time associated with the corresponding code number in the limit time memory 7, the operating hours counter 6 closes the switch 5 via the line 25, so that the access contact 1 and the outgoing contact 2 are electrically connected to one another. The power supply for the subsequent connection device can thus be established.
  • switches 4 and 5 can each be multi-pole switches that can switch several through lines at the same time, a part of these through lines can also be used to supply power to secondary modules of the subsequent connecting device, which makes manipulation of the switching device by laypersons practically impossible .
  • a bypass line is also designated, which can optionally carry the current for a television set or the like in the stand-by position.
  • 15 and 17 are each display elements, 15 indicating the time measured by the clock 3 and possibly also the period stored in the period memory 8, the elapsed period time and the remaining period of the period.
  • the display 17 is primarily intended for the display of the accumulated operating hours in the operating hours counter 6, this display being activated after input of a specific code number in the input unit 16 and showing exactly the number of operating hours belonging to this code number.
  • the limit time or the remaining time can also be shown on the display 17.
  • the input unit 16 can be both a keyboard and a magnetic reader.
  • the entries for the memories 7 to 11 can have a common keyboard and can be individually programmed via a switch or function keys.
  • the line 19 behind the switch 4 or the switch 5 can be branched into a plurality of output lines, the individual output lines being controlled via an additional selector switch or also via the input device 16.
  • a normal lock that can be opened with a key can also occur, and a lock 12 can also be connected to the code memory 9, so that the lock 13 is only opened when a certain code is selected via the input unit 16 .
  • the code memory 9 also has an additional timeout which switches the switch 4 for a predetermined time, e.g. half an hour, blocked and also does not accept any further code numbers if the wrong code number has been entered two or three times in succession.
  • the individual functions of the switching device can best be realized with the help of a microprocessor, which on the one hand can have enough storage space for the recording of the individual data, a real-time clock and also an internal program with operator guidance, which can considerably simplify the handling of the switching device.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
EP91113529A 1990-08-14 1991-08-13 Elektrisches Schaltgerät Withdrawn EP0471328A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19904025703 DE4025703A1 (de) 1990-08-14 1990-08-14 Elektrisches schaltgeraet
DE4025703 1990-08-14

Publications (1)

Publication Number Publication Date
EP0471328A1 true EP0471328A1 (de) 1992-02-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP91113529A Withdrawn EP0471328A1 (de) 1990-08-14 1991-08-13 Elektrisches Schaltgerät

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EP (1) EP0471328A1 (forum.php)
DE (1) DE4025703A1 (forum.php)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002041084A1 (en) * 2000-11-17 2002-05-23 General Distribution Limited Electrical power control system

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9205140U1 (de) * 1992-04-14 1992-08-27 KKW Kulmbacher Klimageräte-Werk GmbH, 8650 Kulmbach Elektrisches Speicherheizgerät
DE4308190A1 (de) * 1993-03-15 1994-09-22 Strzygowski Steffen Gerät zur Einschränkung unerwünschten Fernseh- und Videokonsums vor allem bei Kindern
DE4314464C1 (de) * 1993-05-03 1994-05-05 Herbert Nabereit Elektrisches Schaltgerät für die Steuerung eines eine Bildröhre umfassenden Bildwiedergabegerätes
DE4328880A1 (de) * 1993-08-27 1995-03-02 Elektronik Ges Fuer Entwicklun Fernsehkontrollvorrichtung
DE4332291C2 (de) * 1993-09-20 1998-11-19 Manfred Rupp Steuergerät für Bildsignale wiedergebene Geräte
DE10114568B4 (de) * 2001-03-24 2008-04-10 Rainer Sesselmann Programmgesteuerte Schaltvorrichtung in Netzverbindungen
FR2826136B1 (fr) * 2001-06-15 2003-11-07 Hager Electro Procede de programmation d'horloges programmables a cle et cle de programmation pour la mise en oeuvre de ce procede
DE20114186U1 (de) 2001-08-28 2001-11-22 Kirchmeier, Rolf, 76706 Dettenheim Steuerungseinrichtung zur Verwaltung der Nutzungszeiten eines elektrischen Geräts
DE10307474A1 (de) * 2003-02-21 2004-09-02 Merten Gmbh & Co. Kg Elektro-Hausinstallation
DE202009015268U1 (de) * 2009-11-11 2011-03-31 Obermayer, Michael Benutzerendgerät

Citations (2)

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Publication number Priority date Publication date Assignee Title
US4348696A (en) * 1980-09-08 1982-09-07 Beier Galen C Television viewing control device
US4769765A (en) * 1986-11-10 1988-09-06 Green David L Controlled access programmable event timer system

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
DE2333116C3 (de) * 1973-06-29 1985-04-25 Blaupunkt-Werke Gmbh, 3200 Hildesheim Elektronische Programmzeitung
DE8333111U1 (de) * 1983-11-18 1984-02-23 Thoma, Friedrich Xaver, Ing.(grad.), 7612 Haslach Elektrische Anschlußvorrichtung für Zeitmeßgeräte
DE3633942A1 (de) * 1986-10-04 1988-04-07 Hans W Kloeppel Tabakwaren-zeitdosierbox
DE3701355A1 (de) * 1987-01-19 1988-07-28 Siemens Ag Zeitschaltuhr mit integriertem betriebsstundenzaehler
DE3709750A1 (de) * 1987-03-25 1988-10-06 Zettler Elektrotechn Alois Verfahren und anordnung zur gebuehrenverwaltung von fernsprech-nebenanschluessen in krankenhaeusern, hotels oder dergleichen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4348696A (en) * 1980-09-08 1982-09-07 Beier Galen C Television viewing control device
US4769765A (en) * 1986-11-10 1988-09-06 Green David L Controlled access programmable event timer system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002041084A1 (en) * 2000-11-17 2002-05-23 General Distribution Limited Electrical power control system

Also Published As

Publication number Publication date
DE4025703C2 (forum.php) 1992-07-02
DE4025703A1 (de) 1992-02-27

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