US3754227A - Hotel signalling system - Google Patents

Hotel signalling system Download PDF

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Publication number
US3754227A
US3754227A US00211881A US3754227DA US3754227A US 3754227 A US3754227 A US 3754227A US 00211881 A US00211881 A US 00211881A US 3754227D A US3754227D A US 3754227DA US 3754227 A US3754227 A US 3754227A
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lines
address
modules
indicator key
storage
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US00211881A
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S Andersson
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/30—Electric signal transmission systems in which transmission is by selection of one or more conductors or channels from a plurality of conductors or channels
    • G08C19/34—Electric signal transmission systems in which transmission is by selection of one or more conductors or channels from a plurality of conductors or channels of a combination of conductors or channels
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
    • G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
    • G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources

Definitions

  • the transmitter possesses a coding mech- [56] References Cited anism controllable by the indicator key for simultaneously producing a control signal and at least two ad- UNITED STATES PATENTS dress signals, and wherein the receiver possesses a de- 3,147,385 9/1964 Burgis 340/286 UX coding mechanism for actuating a storage, At the out- 3,215,998 11/1965 Cloyd 340/286 R put f the receiver there is connected the signal lamp 3,228,020 1/1966 Gassenheimer....
  • the present invention relates to a new and improved apparatus for a signallingand indicating system or installation of the type embodying a transmitter possessing an indicator key, a receiver possessing a signal lamp, and connection terminals for the infeed of power.
  • a signallingand indicating installation is already known in the art, by means of which it is possible from a first location to switch-in for instance three signal lamps, one of which is provided at the first location and both of the others of which are provided at a second and third location. These three signal lamps can again be extinguished at the second and/or third location. Installations of this type are advantageously employed in the environment of a hotel wherein a guest signifies to a desk clerk or attendant at the reception or hotel area his intention to depart. Thereafter, such desk clerk or attendant activates a key associated with the room which the guest has occupied.
  • Owing to activation of such key is coordinated with the guestss room, the intention of the guest to depart from the hotel is conveyed to the cashier area and to the area where there is located the supervisory control for the chamber maids. This is accomplished in that a respective lamp associated with the aforementioned room of the guest illuminates at the location of the hotel desk clerk or attendant, at the cashiers area and at the control area for the chamber maids. This indication or signalling causes the cashier to prepare the bill for the guestss room and the maid supervisor to disseminate suitable instructions to the chamber maids. Now when the guest has paid his bill at the cashiers desk or area, the cashier actuates a key associated with the relevant illuminated lamp.
  • Prior art illustrations of this type possess a centrally situated apparatus which embodies a number of relays corresponding to the number of rooms. Each relay possesses a respective work contact and a self-holding contact. Three connection lines or wires are provided for each indicator or signalling key associated with each room and the signal lamps located at the attendants or desk clerks area. Three connection wires are similarly provided for the indicator keys and the signal lamps at the cashier's area and a connection wire is necessary for the signal lamps at the maid supervisory area. Additionally, a common supply line must be wires at all three locations for the indicator keys and the signal lamps. Hence for each room there is present an installation totalling seven connection wires and additionally one common supply line or wire. Hence, for a hotel having for instance 50 rooms this results in 350 connection wires or lines and the common supply line which must be drawn from the centrally located apparatus to the aforementioned three locations.
  • Another more specific object of the present invention relates to the provision of a new and improved apparatus by means of which it is possible to produce a signallingand indicating system, the installation of which is simpler and less expensive because considerably fewer connection lines or wires are necessary.
  • the invention contemplates that the transmitter possesses a coding mechanism controllable by means of the indicator key for simultaneously producing a control signal and at least two address signals, and wherein the receiver possesses a decoding mechanism for actuating a storage, at the output of which storage there is connected the signal lamp of the receiver.
  • FIG. 1 is a block circuit diagram of a signallingand indicating installation equipped with six inventive apparatuses which, for instance, are sub-divided into three groups, each containing two such respective apparatuses;
  • FIG. 2 is a circuit diagram of the transmitter of the inventive apparatus depicted in FIG. 1;
  • FIG. 3 is a circuit diagram of the receiver of the inventive apparatus depicted in FIG. 1;
  • FIG. 4 is a detailed circuit diagram of an apparatus of the type depicted in FIG. 1;
  • FIG. 5 is a circuit diagram of a modified construction of inventive apparatus used in the installation of FIG.
  • FIG. 6 schematically illustrates the principles of the apparatus of FIG. 1, partly in section, wherein only a few individual components have been depicted for purposes of clarity in illustration;
  • FIG. 7 is a side view of a portion of a frame having a cross-bar arrangement, at which frame there are introduced a number of slide-in units of the type used in the arrangement of FIG. 1; and I FIG. 8 is a front view of a portion of the frame depicted in FIG. 7. l
  • FIG. 1 it will be seen that there are illustrated by way of example six such inventive apparatuses or modules, which even though all identical to one another, have been designated by reference characters Al, A2, B1, B2, C1, and C2. These six apparatuses are divided into three groups I, II, and III, with two such apparatuses being associated with each such group.
  • group 1 containing the apparatuses A1, A2 may be assumed to be located at the area of the room attendant or desk clerk, group II, containing the apparatuses B1 and B2, at the cashiers area, and group III, containing the apparatuses Cl and C2, at the maid supervisory area of the hotel.
  • group II containing the apparatuses B1 and B2, at the cashiers area
  • group III containing the apparatuses Cl and C2, at the maid supervisory area of the hotel.
  • the supply lines 1 and 2 for the delivery of the supply voltage or power to the individual apparatuses
  • the illustrated number of three address lines permits two apparatuses to be associated with each group. If, for instance, there are provided eleven address lines, then, it would be possible to use 55 apparatuses for each group.
  • Each of the identical apparatuses A1, A2, B1, B2, C1, C2, is equipped with a transmitter 8 possessing an indicator or signalling key 9 and a receiver 10 equipped with a signalling lamp 11.
  • Each apparatus is electrically coupled with the supply lines 1 and 2.
  • the connection lines 12 between the transmitter 8 and the associated receiver 10 only serve for the connection of the transmitter 8 with the supply line 1 which is coupled with the receiver 10 and for the connection of the receiver 10 with the supply line 2 which is coupled with the transmitter 8.
  • the transmitter 8 of such apparatus simultaneously delivers a respective pulse via all three of its outputs 13, 14 and 15 which are delivered to the address lines 6 and 7 and the signal line 4.
  • All receivers 10 of the apparatuses A1, B1 and Cl receive both of the pulses which have been delivered to the address lines 6 and 7. Only those receivers 8 which simultaneously receive two pulses via the address lines respond to the pulse appearing at the signal line 4.
  • a storage at the receiver 10 is set, this storage to be described more fully hereinafter, and the signal lamps ll of the receivers A1, B1 and Cl light-up.
  • the transmitters 8 of the apparatuses CI and C2 are not electrically coupled with the address lines 6 and 7, only the signal lines 3 and 4 are connected, because at the location of group III the information is only indicated, however not altered.
  • FIG. 2 there is illustrated therein a circuit diagram of the transmitter 8 of each apparatus.
  • the transmitter 8 embodies a coding mechanism for simultaneously generating a control signal and at least two address signals.
  • a direct-current amplifier has delivered a pulse thereto by depressing the indicator key 9, the just-mentioned pulse being transmitted through the agency of a differentiation element embodying a capacitor 20 and a discharge resistor 21.
  • This pulse lasts, for instance, for only 3 milliseconds.
  • This pulse duration time is determined by the capacitance valve of the capacitor 20 and the resistance of the resistor 21, across which the capacitor is charged.
  • This last-mentioned pulse is delivered via suitable semi-conductor elements i.e. diodes 23, 24 and 25 to the three outputs 13, 14 and 15 of the transmitter 8.
  • diodes 23, 24 and 2S serve to decouple these outputs in that, when at one of the address lines 6 and 7 there appears a pulse, such diodes prevent that this pulse can arrive via other nonparticipating transmitters at neighboring address lines.
  • the function of the discharge resistor 21 is to again discharge the capacitor 20 following actuation of the indi cator key 9, so that the transmitter is again in a preparatory state for transmitting a new message or signal.
  • the duration of the generated pulses which are delivered to two of the address lines and one of the signal lines is intentionally maintained so brief so as to practically preclude any transmission errors. Such transmission error could then arise if, for instance, the indicator key 9 of a respective one of the apparatuses of groups I and I] were actuated. ln such case the corresponding receivers would receive a pulse via both signal lines, resulting in an erroneous indication.
  • the probability that within a time-span of 3 milliseconds, in other words practically simultaneously, an indicator key 9 of the group I and an indicator key 9 of the group II will be actuated, is extremely small.
  • the brief duration of such pulses is sufficient for the faultless operation of the installation constructed from such apparatuses.
  • FIG. 3 there is illustrated the circuit diagram of a receiver 10.
  • a receiver 10 Such will be understood to comprise a decoding mechanism embodying two AND-gates 26 and 27, the outputs of which are electrically coupled with a storage or store 28 capable of storing a binary 0 or a binary 1 signal.
  • Signal lamp 11 is connected with this storage 9, lamp ll illuminating when, for instance, there is stored at the storage 28 the logic or binary signal 1.
  • Each of the AND-gates 26 and 27 possesses three inputs, two of which are parallely connected and electrically coupled with the inputs l8 and 19 of the receiver 10, as shown.
  • the inputs 18 and 19 are those destined to be connected with two of the address lines.
  • the remaining inputs of the AND- gates 26 and 27 are connected with the inputs 16 and 17 respectively, destined to be connected with the control signal or signal lines 3 and 4.
  • the AND-gate 26 delivers a pulse at its output.
  • a binary signal 1" is stored at the storage 28 which brings about illumination of the signal lamp 1].
  • the AND-gate 27 produces a pulse which erases the information contained at the storage 28 and switches-out the signal lamp 11.
  • FIG. 4 illustrates the circuit diagram for an apparatus of the type illustrated in FIG. 1, but in any event here with the difference that it contains two transmitters and that six address lines 29, 30, 31, 32, 33 and 34 as well as three signal lines 35, 36 and 37 are provided.
  • the supply voltage for the transmitters and receivers are delivered via the supply lines 1 and 2, whereas the current required for the signal lamp 11 is delivered via the supply line 1 and a third supply line 38 or via a fourth supply line 39.
  • the supply line 38 is connected with a nonillustrated direct-current or alternating-current source, whereas the supply line 39 is connected with a nonillustrated flickering or flashing current circuit, and thus only carries a pulse-like or pulsating voltage.
  • a signal lamp coupled with this supply line 39 therefore does not continuously light-up, rather it illuminates in rythmn with the pulsating voltage.
  • One of the transmitters of the apparatus depicted in FIG. 4 encompasses the indicator key 9, a transistor 40 to which there is delivered a brief pulse through the agency of the differentiating element consisting of the resistor 41 and the capacitor 20 when the indicator key 9' is brought into the other position from that illustrated in FIG. 4, and finally the diodes 23, 24 and 25.
  • the second transmitter of the apparatus embodies the indicator key 9, a transistor 42 to which there is delivered a brief pulse via the differentiation element consisting of the resistor 43 and the capacitor 44 when such indicator key 9' is brought back into the position illustrated in FIG. 4, and finally the diodes 45, 46 and 47.
  • a connection or lead of the diodes 24 and 25 respectively of the first transmitter and a connection or lead of the diodes 45 and 46 respectively of the second transmitter are each commonly connected with the outputs l4 and respectively of the apparatus. Therefore, the different messages or signals which these transmitters deliver arrive, on the one hand, via the diode 23 and the output 13 of the apparatus at the signal line 35 and, on the other hand, via the diode 47 and the output 48 of the apparatus at the signal line 36 at the same address, which for instance is determined by the simultaneous appearance of a respective pulse at the address lines 29 and 33.
  • the storage of the receiver of the apparatus according to FIG. 4 comprises a bistable, polarized relay embodying the two windings 49 and 50 and the switching or changeover contact 51.
  • the switching contact 51 remains in a corresponding position depending upon which of both of these windings 49 and 50 was the last to have been placed into a state of brief excitation, until the other winding becomes excited.
  • Both of the AND-gates mentioned above with regard to the description of FIG. 3 are here formed by the transistors 52, 53, 54 and 55, wherein the respective bases 52a and 53a of the transistors 52 and 53 define respective parallely connected inputs of such AND- gate.
  • These bases 52a and 53a are coupled via the protective resistors 56 and 57 with the inputs l8 and 19 respectively of the receiver, which inputs l8 and 19, in turn, are connected with two of the address lines, for instance lines 29 and 31.
  • the bases 54a and 55a of the transistors 54 and 55 provide the separate inputs of the above-mentioned AND-gate.
  • the alternating contacts or terminals 510 and 51b associated with the switching contact 51 are coupled with additional output tenninals 60, 61 or 62 of the apparatus, whereby the output terminal 61 is decoupled by a diode 63.
  • FIG. 5 there is illustrated a further embodiment of apparatus for a signallingand indicating installation. It contains one of the indicator keys 9, a differentiation element embodying the resistor 41 and the capacitor 20, the transistor 40 and the transmitter embodying the diodes 23, 24 and 25.
  • the receiver apart from the already mentioned separate inputs l6 and 17, further possesses an additional input 64 and a second bistable, polarized relay embodying the windings 65 and 66 and the switching contact 67.
  • the winding 66 can be energized by a transistor 68 when the base 68a of this transistor has delivered thereto a pulse via the third signal line 37, the input 64 and the protective re-' sistor 69.
  • the collector 54a of the transistor 54 is connected to the winding 49 of the first polarized relay 49 51 and the winding 65 of the second polarized relay 65 67, so that, when pulses simultaneously appear at the address lines 29 and 33 and at the signal line 36, both windings 49 and 65 are energized, and therefore, both switches 51 and 67 are brought into the other position from that shown in FIG. 5. This then brings about that the signal lamp 11 no longer continuously illuminates, rather begins to flicker because now it is no longer electrically coupled via the switching contact 51 with the supply line 38, rather viathe switching contact 67 with the supply line 39 which, in turn, is coupled with the previously discussed not particularly illustrated flickering current circuit.
  • An apparatus according to FIG. 5 could be employed for instance for group III, that is to say, in the supervisory area for the chamber maids.
  • the signal lamps will not be extinguished, rather will begin to flicker. This then would be a sign for the chamber maid that she can begin to prepare the room which has just been freed by the departing guest for a new guest.
  • the indicator key 9 After the room has been newly made-up, then by depressing the indicator key 9 there can be signalled that the corresponding room is again ready to be occupied. By depressing the indicator key 9 flickering of the signal lamps stops and the signal lamp extinguishes.
  • FIG. 6 schematically illustrates the construction of a unit according to FIG. 4 or FIG. 5.
  • a housing 70 which is illustrated in section and which possesses the configuration of a pipe or tube having a rectangular cross-section there is arranged a plate member 71 equipped with a non-illustrated printed circuit containing likewise non-illustrated components.
  • a so-called luminous key 72 is arranged at one of the open ends of the housing 70 so as to partially extend into such housing. This luminous key 72 contains the switching or changeover contact associated with the indicator key 9 and the signal lamp 1 l.
  • the other open end of the housing 70 is closed by a multiple plug or multi-pin connector 73, wherein the plug pins 74 of this multiple plug 73 define the outputs 13, l4, l5 and 48 of the transmitter and the inputs l6, l7, l8, l9 and 64 of the receiver, as previously discussed.
  • FIGS. 7 and 8 illustrate parts of a frame or panel 75 as viewed from the side and front respectively.
  • a so-called multiple arrangement 76 which has only been partially illustrated in principle in FIG. 7.
  • This multiple arrangement 76 resides in that all required supply-, signal-, and address-lines are multiplied by each plug-in location provided for the apparatuses.
  • a respective intermediate plug 77 Between the multiple arrangement 76 and the apparatuses there is provided a respective intermediate plug 77.
  • Such intermediate plug 77 possesses insert pins 78 of two different lengths, whereby only the long plug pins 78 make contact with those supply-, control signal-, and address-lines which are necessary for the apparatus inserted at this location.
  • the address to which the message should be directed is determined by the selection of two address or connection lines.
  • the address can be determined by the selection of three or more address lines.
  • a system for hotels for reporting and signalling, to at least one central monitoring location, the condition of each one of a plurality of individual rooms wherein the system comprises: a plurality of modules, said modules each including means for transmitting coded signals and means for receiving coded signals, said means for transmitting coded signals including an indicator key means, a coding mechanism controllable by said indicator key means for simultaneously generating at least two address signals and at least one control signal, said means for receiving coded signals including a decoding mechanism, a storage mechanism actuated by said decoding mechanism, a signal lamp responsive to said storage means, a plurality of n address lines for interconnecting the rooms into said system where n is at least less than the number of rooms, said transmitter means and said receiving means each being interconnected to at least two of said address lines and one of said control signal lines, an individual one of said plurality of modules being located in each one of said plurality of rooms, connection means for the delivery of power to said modules, and wherein is provided a plurality of said modules at said central monitoring location, the modules
  • said coding mechanism embodies an amplifier means with at least three decoupled outputs, said decoding mechanism comprising at least two AND-gates, each of said AND-gates being provided with three respective inputs and a respective output, said storage comprising a binary storage means which is electrically coupled with the outputs of said AND-gates, a respective two inputs of each said AND-gate being parallely connected and serving to receive the address signals, and the remaining respective input of eachsaid AND-gate serves to receive the control signal.
  • said coding mechanism comprises a direct-current, single stage transistor amplifier having an input and an output, said transistor output being connected via diodes with three output terminals, said differentiation element comprising a capacitor for connecting said indicator key with said input of said transistor amplifier and a discharge resistor bridging said capacitor.
  • n address lines are operative to connect at least n(nl )/2 rooms.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Selective Calling Equipment (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
US00211881A 1971-01-11 1971-12-27 Hotel signalling system Expired - Lifetime US3754227A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH34471A CH534402A (de) 1971-01-11 1971-01-11 Einrichtung für eine Signalisations- und Meldeanlage

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US3754227A true US3754227A (en) 1973-08-21

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US00211881A Expired - Lifetime US3754227A (en) 1971-01-11 1971-12-27 Hotel signalling system

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US (1) US3754227A (OSRAM)
AU (1) AU3778172A (OSRAM)
CA (1) CA954451A (OSRAM)
CH (1) CH534402A (OSRAM)
DE (1) DE2165308A1 (OSRAM)
FR (1) FR2121710B1 (OSRAM)
GB (1) GB1345080A (OSRAM)
SE (1) SE7200171L (OSRAM)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5476221A (en) * 1994-01-28 1995-12-19 Seymour; Richard L. Easy-to-install thermostatic control system based on room occupancy
US20040019513A1 (en) * 2002-07-26 2004-01-29 Colalancia Marco S. Communication system for managing hotel operations
US6978565B1 (en) 2001-11-19 2005-12-27 Tom Tollius Device and method for communication with housekeeping services

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2458865A1 (fr) * 1979-06-06 1981-01-02 Equipar Sa Elements de panneau lumineux et panneau utilisant de tels elements

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3147385A (en) * 1963-04-10 1964-09-01 Clare N Burgis Cascaded relay channel selecting system
US3215998A (en) * 1960-05-05 1965-11-02 Webster Electric Co Inc Plural central and remote station signalling and intercommunication system
US3228020A (en) * 1963-09-19 1966-01-04 Gassenheimer Irvin Room status indicating system
US3588868A (en) * 1969-02-27 1971-06-28 Electro Tech Appliance Service Status signalling system
US3594774A (en) * 1968-12-31 1971-07-20 Herman L Dawson Plural module circuit signaling system
US3631536A (en) * 1968-06-10 1971-12-28 John A Mosman Register system memory modules
US3675204A (en) * 1970-05-04 1972-07-04 Varian Associates Status system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1588094A1 (de) * 1967-01-12 1970-05-14 Comp Generale Electricite Vorrichtung zur Fernsteuerung einer Einrichtung mit mehreren elektrischen Geraeten

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3215998A (en) * 1960-05-05 1965-11-02 Webster Electric Co Inc Plural central and remote station signalling and intercommunication system
US3147385A (en) * 1963-04-10 1964-09-01 Clare N Burgis Cascaded relay channel selecting system
US3228020A (en) * 1963-09-19 1966-01-04 Gassenheimer Irvin Room status indicating system
US3631536A (en) * 1968-06-10 1971-12-28 John A Mosman Register system memory modules
US3594774A (en) * 1968-12-31 1971-07-20 Herman L Dawson Plural module circuit signaling system
US3588868A (en) * 1969-02-27 1971-06-28 Electro Tech Appliance Service Status signalling system
US3675204A (en) * 1970-05-04 1972-07-04 Varian Associates Status system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5476221A (en) * 1994-01-28 1995-12-19 Seymour; Richard L. Easy-to-install thermostatic control system based on room occupancy
US6978565B1 (en) 2001-11-19 2005-12-27 Tom Tollius Device and method for communication with housekeeping services
US20040019513A1 (en) * 2002-07-26 2004-01-29 Colalancia Marco S. Communication system for managing hotel operations
US7523046B2 (en) * 2002-07-26 2009-04-21 Cartmanager, Llc Communication system for managing hotel operations

Also Published As

Publication number Publication date
FR2121710A1 (OSRAM) 1972-08-25
DE2165308A1 (de) 1972-07-27
AU3778172A (en) 1973-07-12
GB1345080A (en) 1974-01-30
SE7200171L (OSRAM) 1972-07-12
CA954451A (en) 1974-09-10
FR2121710B1 (OSRAM) 1977-04-01
CH534402A (de) 1973-02-28

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