EP2625678A1 - Verfahren zum betreiben einer sprachdurchsageanlage - Google Patents
Verfahren zum betreiben einer sprachdurchsageanlageInfo
- Publication number
- EP2625678A1 EP2625678A1 EP11790863.2A EP11790863A EP2625678A1 EP 2625678 A1 EP2625678 A1 EP 2625678A1 EP 11790863 A EP11790863 A EP 11790863A EP 2625678 A1 EP2625678 A1 EP 2625678A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- impedance
- loop
- beginning
- short circuit
- switches
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000005236 sound signal Effects 0.000 claims description 5
- 238000004146 energy storage Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002847 impedance measurement Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000010615 ring circuit Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/007—Monitoring arrangements; Testing arrangements for public address systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R27/00—Public address systems
Definitions
- the invention relates to a method for operating a voice announcement system specified in the preamble of claim 1 Art.
- Voice announcement systems in public spaces often have an interface to a hazard detection system or form an integral part of the latter. At least when such electroacoustic systems also serve to announce danger reports, they are subject to high demands on operational safety. In particular, an interruption or a short circuit in the ring circuit supplying the loudspeakers must not lead to a failure of the entire system.
- separator modules each of which a switch or two switches in series, one or the switch controlling microcontroller, a rechargeable from the loop energy storage andaccosprüfscrien for a comprises AC supply voltage supplied by the control center.
- the AC supply voltage has a frequency outside the audible range.
- separator modules make it possible to operate the voice message system in the method according to the preamble of claim 1.
- the microcontroller periodically checks whether the incoming and the outgoing line section of the loop conduct the AC supply voltage. In the event of a voltage dip, the microcontroller then opens its operating voltage refers to the local energy storage, the one or more switches in one of the looped through wires of the loop.
- the short circuit is isolated. While in normal operation, the center feeds the audio signals and the AC supply voltage only in the beginning of the ring line, the feed should also occur in the event of a short circuit from the end of the loop to ensure the supply of the two incurred by the separation of the short stub lines.
- this construction of spurs is not readily possible because after a short circuit, the switches of all disconnector modules open and thus the disconnector modules input side and output side are dead and not communicate with each other in any other way.
- Speech announcement systems that sound large areas with 60 or more speakers, the problem of being able to locate the fault location, so the interruption or short circuit on the loop.
- the invention has for its object to provide a method of the introductory genus, which makes it possible to both detect a fault by interruption or short circuit on the loop in the center and to locate. Another object is to be able to restart the intact parts of the loop after a short circuit in a simple manner.
- control unit measures the impedance incrementally from the first to the last disconnector module as well as the impedance of the entire loop, which enters measured values as set values in an impedance table, during operation periodically the impedance of the entire loop and compares with the corresponding setpoint from the impedance table, generates an error message when a deviation is detected, and compares the measured value with the individual setpoint values in the
- Impedance table determines the fault location and brings to the display. Even already installed systems can be supplemented with little effort with this functionality.
- An essential prerequisite for the uninterrupted maintenance of the function of the voice announcement system in the event of an interruption of the loop is that the center feeds the AC supply voltage into the loop both from the beginning and from the end. At the same time this is a prerequisite for the restoration of the functionality of the system after a short circuit, more precisely, the operability of the resulting after a separation of a short stub line from the end of the previous ring line to the short circuit location.
- a further improvement of the method is that the control center makes the stepwise measurement of the impedance of the loop from both its beginning and end and the measured values in two
- Impedance tables enters, in operation, the impedance of the loop also from both their beginning and of their Periodically measures and compares the measured actual values with the setpoints in the two impedance tables before generating an error message and fault location display.
- the resulting redundancy increases the reliability of an error message and especially the display of the correct error location.
- the simplest way to measure the disconnector module is to first open the switches of all disconnector modules and then to sequentially close them to switch the loop.
- the opening and sequential closing of the switches is performed both from the beginning to the end and from the end to the beginning of the loop.
- a simple way to separate a short circuit from the loop is that in case of short circuit, the switches of all disconnector modules are opened and then, starting at the beginning and at the end of the loop, sequentially closed again and that the switches of the isolator modules directly on both sides of the Kurz practitioner- tes be opened immediately after closing. Because after a short circuit, the simultaneous rebuilding of the two spur lines from the control center could lead to a situation that is adjacent to the short circuit
- Disconnector module in the outgoing from the beginning of the previous loop stub closes its located to the short circuit point switch and at the same time any disconnector module in the other stub also closes its lying on the side of the short circuit switch and on the also coincidentally closed
- the last disconnect module at the end of the loop closes its switch or switches with a delay time longer than the time to sequentially close the switches from the first to the penultimate disconnect module.
- each disconnect module can be equipped with an LED that the microprocessor turns on when it detects that this disconnect module is closest to the short circuit location and therefore keeps the corresponding switch permanently open.
- Fig. 1 the basic structure of a voice announcement system
- FIG. 3 shows a flow chart of the program sequence in the microprocessor of the separator module according to FIG. 2.
- a control center which contains the components known per se, for example for a voice announcement, has a connection A for the beginning of a 2-wire ring line and a connection B for the end of this ring line.
- the wires of the loop are looped through separator modules 1 to 7.
- such a loop may include 60 and more separator modules.
- speaker connected in the separator modules and / or to the line sections between the separator modules.
- the audio signals are fed with up to 100 Veff.
- a sine signal with 22 kHz and an amplitude of approx. 50 V is fed in as AC supply voltage, for example.
- Figure 2 shows a simplified and unipolar drawn block diagram of a separator module.
- the incoming ring line is connected to terminal 2, the outgoing ring line.
- the outgoing ring line There are two wires in a core of the ring line looped from terminal 1 to terminal 2
- Switches Sl and S2 in series. Between Sl and S2 there is a terminal 3 for the connection of a loudspeaker LI. Additional loudspeakers L2 and L3 can be connected to the ringing line outside the isolator module.
- the switches Sl and S2 are executed here as contacts of not shown, separate relays both because of the high audio voltages and the high audio currents.
- the relays and thus the switches Sl and S2 are controlled by a microcontroller, depending on whether the input side and / or output side, a sufficient voltage level is present, more precisely, whether a predetermined voltage level is exceeded or undershot.
- the necessary, separatedersprüf- circuits are known and therefore not shown.
- the microcontroller receives its operating voltage from a power supply, which in turn relates both from the input side and from the output side applied AC supply voltage via a respective rectifier in normal operation.
- the power supply also includes a normal operation also from the AC supply voltage and the rectifier after voltage adjustment constantly charged energy storage in the form of a capacitor. Its capacity is such that the
- Separator module in the absence of the AC supply voltage (and the audio signals) can work independently for a certain time, eg one to two seconds.
- Figure 3 there is shown a simplified flow chart illustrating the operation of each of the separator modules, and more particularly the partially looped routines and subroutines of the microcontroller.
- Step the supply AC voltage is turned on to the loop and then turned off again. This ensures that all the relays, controlled by the microcontroller (see FIG. 3), have their switches S1 and S2 open, and thus a defined initial state is established, which is e.g. when using bistable relays initially is not given.
- the center again applies the AC supply voltage, but only to the beginning of the loop, i. The connection A.
- the microcontroller of the isolator module 1 detects the concern of the supply voltage and therefore closes its switches Sl and S2 (in Figure 3 with "Relay 1" or "Relay 2").
- the center measures the frequency of the AC supply voltage, the impedance of this first plinsab- section of the loop and enters the measured value in a first field of an impedance table A as a setpoint.
- the second isolator module also receives the supply AC voltage.
- the central recognizes at the with the
- Impedance measurement and enters the new value as the reference value of the impedance up to the second separator in a second field of the impedance table A.
- This calibration process and the creation of a complete value series in the impedance table A continue until the last separator module.
- the control panel can measure the impedance of the entire loop to its end at port B and also store this setpoint. This measurement can also be carried out at a later date.
- the control panel switches off the AC supply voltage from its connection A.
- the switches Sl and S2 of all isolator modules open again.
- the central station applies the alternating supply voltage to its connection B and thus to the end of the ring line and repeats the calibration process now from the end to the beginning of the loop.
- the corresponding values are entered by the control center in an impedance table B.
- the control center applies the alternating supply voltage both to its connection A and to its connection B. If not already before, the control panel now measures the total impedance of the closed ring and stores the measured value as the setpoint. During operation, the control panel periodically measures, for example every 5 to 10 seconds, the impedance of the ring line supplied from both sides with the AC supply voltage and possibly audio signals, both from terminal A and terminal B, and compares the measured values or actual values the corresponding setpoints in the impedance table A and the impedance table B. In the event of an interruption of the loop recognizes the
- This interruption is due to the fact that the measured values or actual values of the impedance deviate from the corresponding setpoints and therefore generates an error message. Furthermore, the control center compares the current measured values with the set values entered in the individual fields of the impedance tables A and B and uses the result to determine the number of the isolator module which, as seen from the terminal A, is before the interruption and the number of the isolator module in the same sense after the interruption lies. These separator module numbers show the center in a suitable form, e.g. on a display, on. The disconnector modules are not involved in detecting an interruption. Only the closest to the interruption
- Disconnector modules open according to the flowchart in FIG. 3 on the side of the interruption
- Switch S1 or S2 however, this has no effect on the two spur lines created by the interruption and / or on the control center and the continued functioning of the system.
- the supply voltage at the isolator modules breaks down both on the input side and on the output side.
- the autarkic capacitor now causes the capacitor to operate with its operating voltage.
- Microcontroller provided that the disconnector module brings its relays, more precisely its switches Sl and S2, in the open position. This applies to all isolator modules. Only the disconnector module 1 then receives its AC supply voltage via the terminal A and closes according to the program routine in Figure 3 its switches Sl and S2. Next, therefore, the disconnector module 2 also receives the AC supply voltage, closes its switches Sl and S2, etc., up to that disconnector module which is closest to the short circuit location.
- Disconnector module rebuilt before the short circuit location and all connected speakers are functional again.
- Separator module begins, however, with the closing of its switches Sl and S2 only with a time delay which is such that until then the construction of the outgoing of the terminal A, the longest possible spur line, ie to the disconnector module 6 in Figure 1, is completed with certainty ,
- This delay time can be 3 seconds, for example, for 60 disconnector modules. Namely, in the example of FIG. 1, the
- the spur lines behave as seen from the control center as in the case of a break in the loop.
- the central office thus determines the numbers of the respective last disconnector modules before the short circuit location at the next impedance measurement in the same way as in the case of an interruption.
- the microcontroller of the respective disconnector modules adjacent to the short circuit location can control their LEDs in order to facilitate finding the physical short circuit location.
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Alarm Systems (AREA)
- Locating Faults (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010047220A DE102010047220B4 (de) | 2010-10-04 | 2010-10-04 | Verfahren zum Betreiben einer Sprachdurchsageanlage |
PCT/EP2011/004937 WO2012045436A1 (de) | 2010-10-04 | 2011-10-04 | Verfahren zum betreiben einer sprachdurchsageanlage |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21214038.8 Division-Into | 2021-12-13 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2625678A1 true EP2625678A1 (de) | 2013-08-14 |
EP2625678B1 EP2625678B1 (de) | 2022-08-03 |
Family
ID=45093664
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11790863.2A Active EP2625678B1 (de) | 2010-10-04 | 2011-10-04 | Verfahren zum betreiben einer sprachdurchsageanlage |
Country Status (5)
Country | Link |
---|---|
US (1) | US9462401B2 (de) |
EP (1) | EP2625678B1 (de) |
CN (1) | CN103299352B (de) |
DE (1) | DE102010047220B4 (de) |
WO (1) | WO2012045436A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010047220B4 (de) * | 2010-10-04 | 2012-07-05 | Novar Gmbh | Verfahren zum Betreiben einer Sprachdurchsageanlage |
EP2833333B1 (de) | 2013-07-31 | 2018-12-19 | Honeywell Life Safety Austria GmbH | Bus-System und Verfahren zum Betreiben eines Bus-Systems |
WO2018187269A1 (en) * | 2017-04-05 | 2018-10-11 | Carrier Corporation | Audio riser active electrical supervision |
EP3503591B1 (de) * | 2017-12-19 | 2021-02-03 | Honeywell International Inc. | Vorrichtung zum elektrischen verbinden und lösen von abschnitten einer stromleitung, beschallungsanlage, vorrichtung zur detektion einer störung in einer stromleitung |
CN114223218A (zh) * | 2019-08-14 | 2022-03-22 | 杜比实验室特许公司 | 用于监测和报告扬声器健康状况的方法和系统 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001036995A (ja) * | 1999-07-21 | 2001-02-09 | Toa Corp | スピーカ回線の異常検知装置 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH651688A5 (de) * | 1980-06-23 | 1985-09-30 | Cerberus Ag | Verfahren zur uebertragung von messwerten in einer brandmeldeanlage und einrichtung zur durchfuehrung des verfahrens. |
DE4038992C1 (de) | 1990-12-06 | 1992-02-06 | Siemens Ag, 8000 Muenchen, De | |
JPH10136493A (ja) * | 1996-10-28 | 1998-05-22 | Toa Corp | スピーカラインの検査装置 |
GB9813882D0 (en) * | 1998-06-27 | 1998-08-26 | Protec Fire Detection Plc | Public address system having zone isolator circuits |
US6466647B1 (en) * | 1999-11-17 | 2002-10-15 | Bellsouth Intellectual Property Corporation | System and method for estimating the capacity of a local loop to carry data |
DE10051329C2 (de) * | 2000-10-10 | 2003-12-11 | Job Lizenz Gmbh & Co Kg | Gefahrenmeldeanlage |
CN100547947C (zh) * | 2004-09-16 | 2009-10-07 | 天津市明珠电器公司 | 公共广播系统中二线制多信号传输的扬声器检测控制线路 |
CN2854616Y (zh) * | 2005-12-09 | 2007-01-03 | 天津先唯铁路电子设备有限公司 | 铁路扬声器故障定位装置 |
AT504297B1 (de) * | 2006-09-28 | 2009-11-15 | Av Digital Audio Videotechnik | Verfahren und messeinrichtung zur überwachung von beschallungsanlagen |
ATE515758T1 (de) * | 2007-07-16 | 2011-07-15 | Herbert Puchner | Aktives funktionserhaltungs- und sicherungssystem für alarmierungs-lautsprechernetze in zweidraht- ringleitungstechnik |
EP2051220A1 (de) * | 2007-10-17 | 2009-04-22 | Siemens Building Technologies Fire & Security Products GmbH & Co. oHG | Trennvorrichtung mit Energiespeicher für Energie führende elektrische Leitung |
US7999668B2 (en) * | 2008-11-17 | 2011-08-16 | GM Global Technology Operations LLC | Series interlock system with integrated ability to identify breached locations |
DE102010047220B4 (de) * | 2010-10-04 | 2012-07-05 | Novar Gmbh | Verfahren zum Betreiben einer Sprachdurchsageanlage |
-
2010
- 2010-10-04 DE DE102010047220A patent/DE102010047220B4/de active Active
-
2011
- 2011-10-04 CN CN201180058461.9A patent/CN103299352B/zh active Active
- 2011-10-04 US US13/877,618 patent/US9462401B2/en active Active
- 2011-10-04 EP EP11790863.2A patent/EP2625678B1/de active Active
- 2011-10-04 WO PCT/EP2011/004937 patent/WO2012045436A1/de active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001036995A (ja) * | 1999-07-21 | 2001-02-09 | Toa Corp | スピーカ回線の異常検知装置 |
Non-Patent Citations (1)
Title |
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See also references of WO2012045436A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102010047220B4 (de) | 2012-07-05 |
CN103299352B (zh) | 2015-08-19 |
US9462401B2 (en) | 2016-10-04 |
WO2012045436A1 (de) | 2012-04-12 |
DE102010047220A1 (de) | 2012-04-05 |
EP2625678B1 (de) | 2022-08-03 |
CN103299352A (zh) | 2013-09-11 |
US20140029754A1 (en) | 2014-01-30 |
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