EP0389492A1 - Intelligent alarm apparatus with interfacing to a telephone network - Google Patents

Intelligent alarm apparatus with interfacing to a telephone network

Info

Publication number
EP0389492A1
EP0389492A1 EP88908699A EP88908699A EP0389492A1 EP 0389492 A1 EP0389492 A1 EP 0389492A1 EP 88908699 A EP88908699 A EP 88908699A EP 88908699 A EP88908699 A EP 88908699A EP 0389492 A1 EP0389492 A1 EP 0389492A1
Authority
EP
European Patent Office
Prior art keywords
alarm
processor
telephone network
detector
interfacing
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Withdrawn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
EP88908699A
Other languages
German (de)
French (fr)
Inventor
Matti Myllymäki
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.)
Sostel Oy
Original Assignee
Sostel Oy
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 Sostel Oy filed Critical Sostel Oy
Publication of EP0389492A1 publication Critical patent/EP0389492A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B23/00—Alarms responsive to unspecified undesired or abnormal conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0274—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof
    • H04W52/028—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof switching on or off only a part of the equipment circuit blocks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0296—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level switching to a backup power supply
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to an intelligent alarm apparatus with interfacing to a telephone network, comprising of a sensor, signal detector, processor, and interfacing to a switched telephone network.
  • the basic object of the invention to achieve an alarm apparatus with interfacing to a telephone network using such a novel type of circuit technology in the apparatus that allows an alarm message originating from an alarm sensor to be transmitted via a telephone network without the need for a local power supply.
  • Prior art sensors require interfacing at a low impedance level.
  • the alarm message is routed in the form of a current signal to an alarm system control unit.
  • Several sensors may be attached to the control unit, each at a separate input. Further, the supply voltage to the sensors is provided by the alarm system power supply.
  • the control unit of the alarm system transfers a detected alarm to an automatic calling unit, which subsequently transmits the alarm to an alarm control point.
  • the alarm control unit requires a power supply and backup battery.
  • the automatic calling unit requires a separate power supply with a backup battery.
  • the batteries must be dimensioned so as to have a sufficient capacity even when the current loads of sensor loops are included. For minimized disturbance, the loop current levels are typically in the order of 5...10 mA. Consequently, small systems requiring only one sensor would be excessively complicated and costly to build.
  • the object of the invention is to achieve an alarm apparatus, which replaces an alarm control unit and an automatic calling unit, yet still providing equivalent functions.
  • the particular object of the invention is to achieve an alarm sensor which is directly interfaceable to the telephone network without the need for a local power supply and backup battery.
  • only one alarm sensor of low current consumption is used, which is mounted in the same encapsulation with a processor and is attached directly, without the use of an alarm control unit, to the interrupt input of the processor.
  • the processor In its standby state, the processor is set to a power-saving state called the "wait" mode. It is not until an interrupt is generated that the procedure for alarm transmission (equally as with an automatic calling unit) to the alarm control point is initiated.
  • the supply voltage is produced from the telephone network, which may be loaded up to 1 mA max. according to regulations concerning the construction of telephone networks.
  • the standby condition time is additionally utilized for charging the "storage" capacitor of the alarm apparatus, which supplies energy during an alarm condition of the apparatus.
  • FIG. 1 shows the block diagram of an intelligent alarm apparatus according to the invention
  • Figure 2 shows the circuit diagram of the same alarm apparatus, with the processor being shown in a simplified form.
  • the major units of the apparatus are an infra-red sensor 1, an integrator 2, a detector 3, and a processor 4, as well as a power supply section 5 with storage capacitors 7 (marked as C3 and C4 in Fig. 2) .
  • the infra-red sensor 1 is attached to an operational ampli ⁇ bomb, configured as an integrator 2, in order to make the circuit tolerant to slow changes in the sensed environment.
  • the time constant related to the rate-of-change is determined by elements Cl and R2.
  • Cl is being charged making an equal voltage to be applied to the inverting and noninverting inputs of the operational amplifier so that the operational amplifier output is held to the "zero" level.
  • the operational amplifier output produces a fast pulse, which charges C2.
  • the circuit configuration of C2, R6, and Nl forms a detector, which extends the detected pulse and generates an interrupt for the processor 4.
  • the processor In the standby mode the processor is held in the low-power "wait" state, starting the call procedure at the onset of an interrupt.
  • the processor incorporates a program, which is capable of routing the alarm via a telephone line 6 either to a private telephone number, alarm control center, and/or a paging device.
  • the alarm routing operation is handled using routines of the conventional technology making their descrip ⁇ tion unnecessary in this context.
  • the supply voltage of the circuitry is delivered by a feed bridge SI and constant-current generators TR1 and TR2, together with storage capacitors C3 and C4.
  • the storage capacitors used are high-capacitance value capacitors of the so-called energy-storing type super capacitors, which are charged at a constant current of 1 mA via constant-current generators TR1 and TR2 from a telephone line 6.
  • the capaci ⁇ tors C3 and C4 operate as backup power sources during number dialling or short-term breaks of telephone line connections.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephonic Communication Services (AREA)
  • Alarm Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

Un appareil d'alarme intelligent placé en interface avec un réseau téléphonique comprend un capteur d'alarme (2), qui est directement connecté à un niveau d'impédance élevé via un intégrateur (2) et un détecteur (3) à une entrée d'interruption d'un processeur (4) placé en attente en mode d'économie d'énergie. L'interruption occasionnée au processeur (4) sert à activer la transmission d'un signal d'alarme vers un point de commande d'alarme. Une section d'alimentation (5) de l'appareil est connectée à une ligne téléphonique (6), d'où l'appareil tire son alimentation en énergie.An intelligent alarm device interfaced with a telephone network comprises an alarm sensor (2), which is directly connected to a high impedance level via an integrator (2) and a detector (3) at an input d 'interruption of a processor (4) placed on standby in energy saving mode. The interruption caused to the processor (4) is used to activate the transmission of an alarm signal to an alarm control point. A power section (5) of the apparatus is connected to a telephone line (6), from which the apparatus draws its power supply.

Description

Intelligent alarm apparatus with interfacing to a telephone network
The present invention relates to an intelligent alarm apparatus with interfacing to a telephone network, comprising of a sensor, signal detector, processor, and interfacing to a switched telephone network.
The basic object of the invention to achieve an alarm apparatus with interfacing to a telephone network using such a novel type of circuit technology in the apparatus that allows an alarm message originating from an alarm sensor to be transmitted via a telephone network without the need for a local power supply.
Different kinds of alarm sensors are currently in use offering a connection to an alarm system, from where the alarm is further routed to the telephone network by means of an automatic calling unit.
Prior art sensors require interfacing at a low impedance level. The alarm message is routed in the form of a current signal to an alarm system control unit. Several sensors may be attached to the control unit, each at a separate input. Further, the supply voltage to the sensors is provided by the alarm system power supply.
The control unit of the alarm system transfers a detected alarm to an automatic calling unit, which subsequently transmits the alarm to an alarm control point.
In a conventional system, the alarm control unit requires a power supply and backup battery. In addition, the automatic calling unit requires a separate power supply with a backup battery. The batteries must be dimensioned so as to have a sufficient capacity even when the current loads of sensor loops are included. For minimized disturbance, the loop current levels are typically in the order of 5...10 mA. Consequently, small systems requiring only one sensor would be excessively complicated and costly to build.
Furthermore, the battery life is limited, and so a battery malfunction causes the majority of faults in alarm equipment.
The object of the invention is to achieve an alarm apparatus, which replaces an alarm control unit and an automatic calling unit, yet still providing equivalent functions. The particular object of the invention is to achieve an alarm sensor which is directly interfaceable to the telephone network without the need for a local power supply and backup battery.
This object of the invention is achieved by what is stated in the characterizing parts of the claims.
In accordance with the invention, only one alarm sensor of low current consumption is used, which is mounted in the same encapsulation with a processor and is attached directly, without the use of an alarm control unit, to the interrupt input of the processor. In its standby state, the processor is set to a power-saving state called the "wait" mode. It is not until an interrupt is generated that the procedure for alarm transmission (equally as with an automatic calling unit) to the alarm control point is initiated.
The supply voltage is produced from the telephone network, which may be loaded up to 1 mA max. according to regulations concerning the construction of telephone networks.
This low level of current consumption is obtained by the aforementioned high-impedance sensor circuitry and by holding the processor in the standby, or the "wait" mode. Moreover, programmed data is stored in an EEPROM type memory, whose supply voltages are switched on only for a read or write operation. Additionally, the entire circuit configura¬ tion is designed using low-power components of conventional technology.
The standby condition time is additionally utilized for charging the "storage" capacitor of the alarm apparatus, which supplies energy during an alarm condition of the apparatus.
In the following, an embodiment of the invention is described in reference to the attached drawings, in which:
Figure 1 shows the block diagram of an intelligent alarm apparatus according to the invention and
Figure 2 shows the circuit diagram of the same alarm apparatus, with the processor being shown in a simplified form.
The major units of the apparatus are an infra-red sensor 1, an integrator 2, a detector 3, and a processor 4, as well as a power supply section 5 with storage capacitors 7 (marked as C3 and C4 in Fig. 2) .
The infra-red sensor 1 is attached to an operational ampli¬ fier, configured as an integrator 2, in order to make the circuit tolerant to slow changes in the sensed environment. The time constant related to the rate-of-change is determined by elements Cl and R2. When the variations in,the sensed environment have a low rate-of-change, such as that of the room temperature, Cl is being charged making an equal voltage to be applied to the inverting and noninverting inputs of the operational amplifier so that the operational amplifier output is held to the "zero" level. During quick variations in the sensed environment that exceed the time constant formed by Cl and R2, the operational amplifier output produces a fast pulse, which charges C2. The circuit configuration of C2, R6, and Nl forms a detector, which extends the detected pulse and generates an interrupt for the processor 4.
In the standby mode the processor is held in the low-power "wait" state, starting the call procedure at the onset of an interrupt. The processor incorporates a program, which is capable of routing the alarm via a telephone line 6 either to a private telephone number, alarm control center, and/or a paging device. The alarm routing operation is handled using routines of the conventional technology making their descrip¬ tion unnecessary in this context.
The supply voltage of the circuitry is delivered by a feed bridge SI and constant-current generators TR1 and TR2, together with storage capacitors C3 and C4. The storage capacitors used are high-capacitance value capacitors of the so-called energy-storing type super capacitors, which are charged at a constant current of 1 mA via constant-current generators TR1 and TR2 from a telephone line 6. The capaci¬ tors C3 and C4 operate as backup power sources during number dialling or short-term breaks of telephone line connections.

Claims

WHAT IS CLAIMED IS:
1. An intelligent alarm apparatus with interfacing to a telephone network, comprising of an alarm sensor (1)/ a detector (3), and a processor (4) as well as interfacing to a switched telephone network (6), with the apparatus being configured so as to receive its supply voltage from the telephone network, c h a r a c t e r i z e d in that an alarm detector (1) of low power consumption, together with its detector (3) is attached a high impedance level directly, that is, without the use of an alarm control unit, to an interrupt input of the processor (4), and an interrupt routine of the processor (4) which, during a standby condition, is set into a power- saving mode, is arranged to initiate alarm transmission to an alarm control point.
2. An alarm apparatus in accordance with claim 1, c h a r a c t e r i z e d in that a supply voltage feed circuit (5) of the apparatus to be attached to the telephone network comprises of a feed bridge SI, a constant-current generator (TR1, TR2) , and an energy-storing capacitor
(7; C3, C4), which is arranged chargeable via the constant- current generator (TR1, TR2) at a constant current of approx. 1 mA from the telephone line (6).
3. An alarm apparatus in accordance with claim 1 or 2, in which the alarm sensor (1) is connected to an operational amplifier configured as an integrator (2), c h a r a c t e r i z e d in that there is placed a detector (3; C2, R6, Nl) between the operational amplifier and the processor (4) that extends the length of fast pulses received from the operational amplifier output, and at the occurrence of a pulse, generates an interrupt for the processor (4).
4. An alarm apparatus in accordance with any of claims 1...3, c h a r a c t e r i z e d in that the apparatus incorporates only one alarm sensor (1) of lov; power consumption, placed in the same encapsulation with the processor (4).
5. An alarm apparatus in accordance with any of claims 1...4, c h a r a c t e r i z e d in that the program data related to the dialling routines used in the telephone network are arranged εtorable into the EEPROM memory of the processor (4), with the memory supply voltages being applied only for the duration of a read or write operation.
EP88908699A 1987-10-15 1988-10-14 Intelligent alarm apparatus with interfacing to a telephone network Withdrawn EP0389492A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI874543A FI77344C (en) 1987-10-15 1987-10-15 TILL ETT TELEFONNAET ANSLUTBAR INTELLIGENT ALARMANORDNING.
FI874543 1987-10-15

Publications (1)

Publication Number Publication Date
EP0389492A1 true EP0389492A1 (en) 1990-10-03

Family

ID=8525236

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88908699A Withdrawn EP0389492A1 (en) 1987-10-15 1988-10-14 Intelligent alarm apparatus with interfacing to a telephone network

Country Status (6)

Country Link
EP (1) EP0389492A1 (en)
KR (1) KR890702365A (en)
AU (1) AU2535988A (en)
DK (1) DK91390A (en)
FI (1) FI77344C (en)
WO (1) WO1989003627A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2061508C (en) * 1991-11-04 2000-11-07 Raymond Gilbert Smoke detector with automatic dialing

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3466395A (en) * 1966-04-08 1969-09-09 Bell Telephone Labor Inc Automatic data reporting system with remote power deriving means
US3539727A (en) * 1969-02-10 1970-11-10 Bell Telephone Labor Inc Batteryless data receiver having power supply isolation between detection circuits and signal output
AT351081B (en) * 1975-07-31 1979-07-10 Neumann Elektronik Gmbh SELECTION DEVICE FOR AN EMERGENCY CALL DEVICE
GB1601942A (en) * 1977-03-04 1981-11-04 Post Office System for transmitting alarm information over telephone lines
AU4052578A (en) * 1977-10-13 1980-04-17 Processor Enterprises Ltd Alarm system
SE434784B (en) * 1978-02-16 1984-08-13 Renstrom Gert Ove SOUND TRANSMITTING DEVICE WHICH IS CONNECTED TO THE PUBLIC TELEPHONE
US4691344A (en) * 1986-01-21 1987-09-01 Aquatrol Corporation Low-powered remote sensor and telephone line transmitter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8903627A1 *

Also Published As

Publication number Publication date
WO1989003627A1 (en) 1989-04-20
DK91390D0 (en) 1990-04-11
FI77344B (en) 1988-10-31
KR890702365A (en) 1989-12-23
FI77344C (en) 1989-02-10
AU2535988A (en) 1989-05-02
FI874543A0 (en) 1987-10-15
DK91390A (en) 1990-04-11

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