EP0106654A1 - Telemetrie-System - Google Patents

Telemetrie-System Download PDF

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Publication number
EP0106654A1
EP0106654A1 EP83306159A EP83306159A EP0106654A1 EP 0106654 A1 EP0106654 A1 EP 0106654A1 EP 83306159 A EP83306159 A EP 83306159A EP 83306159 A EP83306159 A EP 83306159A EP 0106654 A1 EP0106654 A1 EP 0106654A1
Authority
EP
European Patent Office
Prior art keywords
receiver
telemetry system
transmitter
low voltage
signal
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Withdrawn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
EP83306159A
Other languages
English (en)
French (fr)
Inventor
Christopher Robert Melbourne
Julian Blazejewski
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.)
Balfour Beatty PLC
Original Assignee
BICC PLC
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 BICC PLC filed Critical BICC PLC
Publication of EP0106654A1 publication Critical patent/EP0106654A1/de
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C15/00—Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path

Definitions

  • This invention relates to a telemetry system for building services.
  • the invention is particularly, though not exclusively, for use in controlling the supply of electrical power to an electrical unit (e.g. luminaires, heating, etc) or for use in monitoring a condition or conditions within a building (e.g. a fire alarm).
  • an electrical unit e.g. luminaires, heating, etc
  • monitoring a condition or conditions within a building e.g. a fire alarm
  • Known telemetry systems for building services either comprise numerous cable runs between inputs and outputs which is costly in terms of cable and installation; or comprise numerous cable runs between outstations which are interconnected by another type of telemetry system which is expensive in terms of substations; or are such that only one transmitter can operate one receiver which requires arbitration between transmitters and has no guaranteed access time; or a combination of two or more of the above.
  • a telemetry system for building services comprises at least one transmitter connected by a low voltage electric cable to at least one receiver, the or each transmitter acting on a command from actuating means to transmit or modify a signal or signals via the low voltage cable to the or each receiver, the or each receiver acting on the received signal or signals to provide an output or outputs which operate an electric circuit.
  • the low voltage cable preferably comprises at least four cores, one of which supplies power to the or each transmitter and to the or each receiver at a low voltage.
  • a second core is for the signals from transmitter to receiver, a third core supplies synchronised pulse trains, and the fourth acts as a common for the others.
  • a system clock provides synchronising pulse trains to the or each transmitter and to the or each receiver, each train being an exact number of pulses of predetermined width and delay, a predetermined pause distinguishing the start of each train.
  • the or each transmitter (and hence its associated output from a receiver) has an associated pulse in the train (an address).
  • a transmitter receives a command (e.g. ON, OFF, etc) it awaits the start of the next pulse train, starts counting pulses, and sends a signal pulse down the signal core when it counts its associated pulse in the train.
  • the receiver which also counts pulses on the train receives the signal pulse which corresponds to its associated pulse on the train it acts according to the command.
  • the length of the signal pulse with respect to the basic half period of the synchronising clock preferably distinguishes between different commands. Alternatively the polarity or magnitude of the signal pulse distinguishes between different commands.
  • a predetermined sequence of command signal pulses preferably indicates alternative commands.
  • the address for the or each transmitter and the or each receiver is preferably set by track links on a printed circuit board. Alternatively they may be set by coding switches in temporary latches by means of a keyboard.
  • the or each transmitter and the or each receiver and the synchronising clock pulse train generator preferably comprises a single chip microcomputer, the identity and function of which is determined by the connections on the printed circuit board.
  • the microcomputer may have up to twenty different functions.
  • one transmitter is associated with one output from a receiver.
  • one or more than one transmitter may be associated with one or more than one output from a receiver.
  • the or each transmitter preferably has more than one input.
  • the or each receiver provides an output or outputs to means which controls said supply.
  • the controlling means is preferably relays and/or contactors and/or triacs which either switch the power on or off, and/or in the case of triacs reduce or increase the power.
  • the controlling means is connected by one or more isolators to its associated receiver to prevent the power supply reaching the receiver.
  • the isolators are preferably optical isolators or relays.
  • the or each receiver can have any number of outputs but preferably it or each has eight outputs for on/off switching of luminaires, etc., or one output for dimming of a luminaire.
  • each output controls the power supply to electrical units in one zone.
  • the or each transmitter is preferably capable of sending four signals, ON, OFF, REDUCE POWER, and INCREASE POWER (where a receiver has no means for understanding the last two signals it will ignore them).
  • the actuating means for the or each transmitter is preferably a manually operated switch.
  • the actuating means for a transmitter may be a remote control device (e.g. by infrared control).
  • a transmitter may incorporate an ON - predetermined pause - REDUCE POWER - OFF for certain applications (e.g. luminaires on stairs).
  • the actuating means for the or each transmitter is a monitoring device.
  • the monitoring device may be a smoke detector, fire detector, intruder detector, etc., dependent on the needs of the system.
  • the output or outputs from the or each receiver are preferably fed to a display device which indicates if a condition has been detected or to means which is automatically actuated (e.g. an alarm).
  • the display device also indicates the position (that is the location of the transmitter which has sent or modified the signal to the receiver) of the condition.
  • the monitoring device is an intruder detector
  • the detector may be a beam of light or a microswitch. In all cases the display device may include an audible alarm.
  • a central controller which may be fitted retrospectively, provides management of the system. This is particularly useful where the system is used for controlling the switching of luminaires, as the central controller preferably includes a timer and mode control (e.g. for normal, security, cleaning, etc).
  • This invention has numerous advantages over the prior art in that power cablingruns are simplified (especially where multipoint switching is required).
  • smaller zones are easier to install, and can easily changed by re-addressing the transmitters (rather than moving the power cables); where the transmitters are remotely activated, preferably by means of a hand held activator, they can be mounted adjacent the receivers; and energy management can be easily and cheaply incorporated.
  • This invention can also be used for hotel management, nurse call systems, etc.
  • the diagram illustrates the receiver 1 of a telemetry system which is used for the ON/OFF control of eight outputs 2.
  • a low voltage signal cable 3 transmits control signals from a transmitter (not shown).
  • Each output 2 is connected via an isolator 4 and relay 5 to an electrical unit 6 (e.g. a luminaire or group of luminaires).
  • Each output has an address number (N, N+l, 7-8) which on receiving a corresponding signal from the transmitter, actuates its corresponding relay 5.
  • the power supply for each electrical unit 6 is supplied by a power cable 7.
  • FIG. 2 An alternative arrangement is shown in Figure 2 where the receiver 8 has a single output through isolator 9 to a triac 10. On receiving a signal from a transmitter (not shown) through the low voltage signal cable 11, the power supply through the power cable 12 to an incandescent lamp 13 is varied.
  • the monitoring system shown in Figure 3 comprises transmitters 14, 15, 16 connected by a four core low voltage signal cable 17 to corresponding receivers 18, 19, 20.
  • Each transmitter 14, 15, 16 is connected to smoke detectors 21 or heat sensors 22 or both.
  • a signal is sent via the cable 17 to the corresponding receiver 18, 19, 20 which indicates the existence of a fire and its position by actuating an alarm 23 or triggering a display device 24.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire Alarms (AREA)
  • Alarm Systems (AREA)
  • Selective Calling Equipment (AREA)
EP83306159A 1982-10-14 1983-10-12 Telemetrie-System Withdrawn EP0106654A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8229352 1982-10-14
GB8229352 1982-10-14

Publications (1)

Publication Number Publication Date
EP0106654A1 true EP0106654A1 (de) 1984-04-25

Family

ID=10533592

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83306159A Withdrawn EP0106654A1 (de) 1982-10-14 1983-10-12 Telemetrie-System

Country Status (2)

Country Link
EP (1) EP0106654A1 (de)
GB (1) GB2129177A (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2289950A1 (fr) * 1974-11-01 1976-05-28 Int Home Systems Systeme pour la gestion et le controle a distance d'une pluralite de dispositifs electriques
FR2326101A1 (fr) * 1975-09-26 1977-04-22 Siemens Ag Dispositif de commutation pour des appareils electriques d'utilisation telecommandes
US4215276A (en) * 1978-03-20 1980-07-29 Janeway William F Remote control of electrical power distribution system and method
GB2080000A (en) * 1980-07-10 1982-01-27 Shorrock Dev Data Transmission System

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1105973A (en) * 1964-06-13 1968-03-13 Omron Tateisi Electronics Co A remote observation system
US3544803A (en) * 1968-04-01 1970-12-01 Motorola Inc Vehicular electrical systems
US3564280A (en) * 1969-02-14 1971-02-16 Essex International Inc Plex-path circumferential energy control and distribution system
GB1427133A (en) * 1971-11-24 1976-03-10 Smiths Industries Ltd Vehicles including monitoring and/or controlling apparatus
FR2214189B1 (de) * 1973-01-16 1977-07-22 Silec Liaisons Elec
US3720790A (en) * 1973-01-31 1973-03-13 Amp Inc Data transmitting system
GB1462052A (en) * 1973-07-27 1977-01-19 Plessey O Ltd Information communication system
GB1467805A (en) * 1973-09-21 1977-03-23 Standard Telephones Cables Ltd Electrical control systems
DE2503679C2 (de) * 1975-01-30 1983-01-27 Robert Bosch Gmbh, 7000 Stuttgart Fernwirksystem zum selektiven Ansteuern von Verbrauchern, insbesondere in Kraftfahrzeugen
DE2644106A1 (de) * 1976-09-30 1978-04-06 Bosch Gmbh Robert Fernwirksystem zum selektiven ansteuern von empfaengern, insbesondere in einem kraftfahrzeug, mit empfaenger- rueckmeldung
GB1579152A (en) * 1977-06-04 1980-11-12 Denver Fire Reporter & Protect Multiplexed interrogation systems
GB1589443A (en) * 1977-10-12 1981-05-13 Ford Motor Co Electrical communication system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2289950A1 (fr) * 1974-11-01 1976-05-28 Int Home Systems Systeme pour la gestion et le controle a distance d'une pluralite de dispositifs electriques
FR2326101A1 (fr) * 1975-09-26 1977-04-22 Siemens Ag Dispositif de commutation pour des appareils electriques d'utilisation telecommandes
US4215276A (en) * 1978-03-20 1980-07-29 Janeway William F Remote control of electrical power distribution system and method
GB2080000A (en) * 1980-07-10 1982-01-27 Shorrock Dev Data Transmission System

Also Published As

Publication number Publication date
GB2129177A (en) 1984-05-10
GB8327315D0 (en) 1983-11-16

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19840717

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19850814

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MELBOURNE, CHRISTOPHER ROBERT

Inventor name: BLAZEJEWSKI, JULIAN