EP2622588B1 - Setting the operating mode of a hazard warning system by means of an electrically readable bipole, in particular a resistor, which is arranged in a hazard warning system socket - Google Patents

Description

Setting the operating mode of a hazard detector by means of a arranged in a danger detector socket, electrically readable bipoles, in particular a resistor

The invention relates to the use of a mounted in a detector base for releasably receiving a hazard detector two-pole, which is electrically readable by an electronic control of the danger detector.

Furthermore, the invention relates to a hazard detector, which is designed for releasable inclusion in a structurally matched detector base, the danger detector on its side facing the detector base side a series of first electrical contacts, which in the recorded state of the danger detector in the detector base a number of opposite, contact second contacts. Of these, a first part for connection to a detector line or detector line is provided at least for the electrical power supply of the danger detector. Furthermore, of which a second part is not provided for connection to the detector line. Furthermore, the hazard detector on an electronic control system for controlling the hazard detector.

From the GB 2 447 917 A It is known to use resistance to indicate the life or date of manufacture of a fire alarm. The detector there has a Melnerbasis and a sensor connected thereto. The detector base is set up to send a signal via a control line to the connected sensor in order to run a self-test there. The detector base further includes an A / D converter to detect a DC voltage value that drops across a voltage divider consisting of two series-connected resistors. The first resistor is disposed in the detector base and has a fixed resistance value. The second resistor is arranged in the sensor and has a variable resistance value for encoding a date of manufacture of the sensor. The corresponding DC voltage value is then detected by the A / D converter in the detector base and connected by the latter via a detector line to a higher-level control panel (CIE). In the message center, a time difference is then determined from the determined date of manufacture of the sensor and the current date to the calculated end of life of the sensor and possibly informed service personnel. According to a further embodiment, geographic coding for the use of the sensor is additionally possible via a further variable resistance in the sensor. In this way, a coding of the sensor according to model, type or version of the sensor is still possible.

The hazard detectors considered are point detectors. They can be eg fire or smoke detectors. These fire or smoke detectors are preferably optical fire detectors which have an optical detector unit, which operates according to the scattering principle, for the detection of smoke particles. Alternatively or additionally, they may have a detector unit operating according to the acoustooptic principle or a gas sensor for detecting flammable gases. Furthermore, the hazard alarm can be acoustic alarm, so-called "sounder". They can be flashlights, so-called "Beacon", or a combination of these, the so-called "Sounder Beacon." Finally, the danger detector can be used an intrusion detector to detect a possible burglary.

Furthermore, the considered hazard detectors via a common detector line, in particular via a two-wire line, signal and / or data technology connected to a fire alarm panel. Several such hazard detectors can be connected in detector zones or detector lines to a danger control center, which typically also supplies the electrical supply of the hazard alarm with electricity.

The hazard detectors can have different operating modes. This means that it can be configured or parameterized differently, whereby the respective combination of several different functionalities that are not directly functionally related to one another is also recorded as one operating mode.

In the case of a fire driller, e.g. different sensitivity levels, e.g. via DIP switches or contact bridges. Thereby, e.g. the response time and / or detection threshold for detecting smoke may be changed depending on whether the fire detector is e.g. to be used in an office building or in a scroller's wing. In the case of an audible and / or visual alarm, e.g. different values are set for the volume, for the flash sequence or for alarm tone intervals. In the case of an intrusion detector, e.g. different sensitivity thresholds are set. It is also possible that the so-called "anti-masking" function is turned on or off.

Instead of the switches, parameterization via a programming interface or via the detector cable is possible through the fire alarm control panel.

The disadvantage of this is that when replacing the danger detector this may need to be reparameterized.

It is therefore an object of the invention to provide an improved method for setting the operating mode and an improved hazard detector.

These objects are achieved by the subject-matter of the independent claims. Advantageous embodiments of the present invention are described in the dependent claims.

According to the invention, a dipole mounted in the detector base of the hazard detector is used for setting at least two operating modes of the hazard alarm, wherein an electrical characteristic of the dipole is electrically read out via two electrical contact pairs contacting each other in the recorded state of the hazard alarm by an electronic control of the hazard alarm.

The dipole may be a passive device, such as an electrical resistor, a coil or a capacitor. It can be a diode or zener diode. The dipole may also be a combination thereof, e.g. a series circuit and / or parallel circuit thereof, which then have two terminals for connecting this two-pole. The electrical characteristic of the two-pole is correspondingly a resistance value, a capacitance value, an inductance value, a diode forward voltage or a Zener voltage. It may also be a resonant frequency in a series or parallel connection of a coil and a capacitor.

As a result, a predetermined by the detector base location-related adjustment of a desired mode is possible in an advantageously simple manner. As a result, parameterization or adjustment of the desired operating mode is no longer required when replacing the hazard alarm. The maintenance effort is simplified.

In addition, there is still compatibility with existing detector bases. In the event that no valid electrical characteristic can be read, so if, for example, no two-pole in the detector base, a default mode for the hazard detector, ie a standard mode is set.

According to a variant of the method, a corresponding parameter set and / or a corresponding operating program is loaded by the electronic controller for setting the desired operating mode. Typically, the adjustment of the mode is performed by having the parameters relevant to the execution of the mode, such as, e.g. Time values, detection thresholds, etc., to be changed. Alternatively, in the case of using a processor-based spreader unit, such as e.g. a microcontroller, a plurality of software programs may be loaded in a memory of the microcontroller, each of which is provided to carry out a mode of operation. The selection of the software program to be executed by the microcontroller is carried out by a selection program routine which evaluates the detected electrical characteristic in a corresponding manner.

A further variant of the method according to at least one pair of electrical contacts, which is usually or intended for external connection of an optical and / or audible alarm to increase the attention in a detected hazardous event is used to read the electrical characteristic of the dipole.

According to a further variant of the method, a suitable resistance value for the electrical resistance is selected for setting the respective operating mode, which value is assigned to a comparison value assigned to the respective operating mode, in particular within a predefinable resistance value range. As a result, by a suitable selection of a conventional electrical resistance, for which there are a multiplicity of commonly available resistance values, a conceivably simple adjustment of the operating mode is possible.

Preferably, the two-terminal is an electrical resistance with resistance values in the range of 100 Ω to 100 kΩ, in particular in the kΩ range and in particular with a nominal power loss of less than 1 watt.

The danger detector is preferably a fire detector designed as a point detector, an acoustic alarm device, an optical alarm device or an intrusion detector.

FIG 1

einen in einem Meldersockel aufgenommenen Gefahrenmelder am Beispiel eines Brandznelders,

FIG 2

einen beispielhaften Meldersockel mit einem aufgenommenen Zweipol und mit vier Kontakten sowie einen zugehörigen Gefahrenmelder mit vier Gegenkontakten unter anderem zum elektrischen Auslesen des Zweipols gemäss der Erfindung und

FIG 3

ein Beispiel für das elektrische Auslesen des Zweipols gemäss FIG 2 über einen Ein-/Ausgabeport einer elektronischen Steuerung des Gefahrenmelders.

The invention and advantageous embodiments of the present invention will be explained using the example of the following figures. Showing:

FIG. 1

a danger detector recorded in a detector base using the example of a fire alarm,

FIG. 2

an exemplary detector base with a recorded two-terminal and with four contacts and an associated hazard detector with four mating contacts, inter alia, for electrical readout of the two-pole according to the invention and

FIG. 3

an example of the electrical readout of the two-pole according to FIG. 2 via an input / output port of an electronic control of the danger detector.

FIG. 1 shows a recorded in a detector base 3 hazard detector 1 using the example of a fire alarm. The fire detector 1 can be detachably received eg in the sense of a bayonet lock in the detector base 3. It is attached to monitor a room by way of example on a ceiling not further described. Reference numeral 2 shows a detector line, typically a two-wire line, via which the fire detector 1 is signal and / or data-technically connected via the detector base 3 to a hazard alarm control center (not shown). In most cases, the electrical supply of the fire detector 1 with power via the detector line 2.

FIG. 2 shows an exemplary detector base 3 with a recorded two-pole R1 and four contacts X1, X2, X3, XEA and an associated hazard detector 1 with four mating contacts Y1, Y2, Y3, YEA inter alia for the electrical readout of Zweipols R1 according to the invention. In the present example, 21 denotes the "PLUS" line "(+ L) and 22" MINUS "line (L-) .These two lines 21, 22 are typically supplied with a DC voltage provided by the alarm center becomes.

According to the invention, the two-pole R1 mounted in the detector base 3 is used for setting one of at least two operating modes of the danger detector 1. In this case, in the recorded state of the hazard detector 1, an electrical characteristic of the two-pole R1 via two then contacting electrical contact pairs - here the contact pairs X2, Y2; XEA, YEA - be electrically read by an electronic control 4 of the hazard detector 1. For this purpose, the electronic control 4 may also comprise a suitable electrical or electronic measuring device, such as e.g. Window comparators.

In the present example, a corresponding parameter set PAR1, PAR2 is loaded for setting the desired operating mode, which is loaded by an operating program stored in the electronic control 4 for executing the set operating mode. Alternatively or additionally, based on the detected and evaluated electrical characteristic value of the two-pole R1, a separate operating program for executing the respective operating mode can be started.

In the example of FIG. 2 the two-terminal R1 is an electrical resistance. It has a resistance value adapted to the desired operating mode, which can be detected by the electronic control by measurement technology. The detected resistance value or another variable representing this resistance value, such as, for example, an electrical conductance or a percentage, is then given a value in the electrical field Control 4 stored or loadable comparison value Ω1, Ω1 compared. If the detected resistance value of the electrical resistance R1 lies within a predefinable resistance value range around the comparison value Ω1, Ω1, then one of the operating modes is assigned or set valid.

For detecting the resistance value of the electric resistance R1, e.g. the current flowing through it or the voltage applied to it are detected. The resistor R1 may e.g. have a common resistance, e.g. 3.3 kΩ, 4.7 kΩ or 6.8 kΩ. It is also possible for the detector base 3 or the two contacts X2, XEA to remain unconnected, such as e.g. for a default mode setting. In this case, an infinite "high resistance value is detected by the electronic control unit 4. If this value is above a predetermined minimum resistance value, such as 100 kΩ, then this resistance value can be assigned to the default mode.

Preferably, the electrical characteristic value, as here the resistance value, at least indirectly via an input / output port EA of a microcontroller 5 is read out as part of the electronic control unit 4. The input / output port EA is preferably set up for analog input / output of an electrical analog value. To read in the resistance value, it is configured for readout, ie as an analogue input. In particular, it is usually provided for the external connection of an optical and / or acoustic alarm device. One way to read an electrical characteristic is in the following FIG. 3 described.

FIG. 3 shows an example of the electrical readout of Zweipols R1 according to FIG. 2 via an input / output port EA of an electronic control 4 of the danger detector 1. In the right part of FIG. 3 a section of a microcontroller 5 is shown. With P and M, a positive and a negative supply voltage terminal for the microcontroller 5 are designated. It can be arranged in between other components, such as protective diodes, voltage level, etc ..

Both are now connected by way of example in such a way that they are connected via the electrical contact pairs X1, Y1; XEA, YEA are connected to the "PLUS" line 21 and the "MINUS" line 22 of the detector line 2. Up to now, the contact pair XEA, YEA) has only been used to connect another external device, such as an acoustic and / or visual alarm transmitter. According to the invention, this contact pair XEA, YEA is now used for setting the operating mode. In the present example, the connection of the two-pole R1 is carried out so that it is connected in the recorded state of the hazard detector 1 in the detector base 3 via the two "pairs of contacts X2, Y2, XEA, YEA" in series with another resistor R2. The voltage drop across the two-pole R1 is then detected by the input / output port EA connected as the analog input. From the voltage dividing ratio as well as the microcontroller 5 stored known comparison value is then a computational determination of the resistance of Zweipols R1 possible and thus a setting of the desired mode by the microcontroller 5 possible.

LIST OF REFERENCE NUMBERS

1

Danger detectors, fire detectors, intrusion detectors

2

Detector cable, two-wire cable

3

detector base

4

electronic control, control unit

5

microcontroller

21

+ Line, "PLUS" line

22

- Line, "MINUS" line

EA

I / O Port

M

Connection for negative supply voltage, ground

P

Connection for positive supply voltage

PAR1, PAR2

parameter

R1

Two pole, first resistance

R2

second resistance

X1-X3, XEA

socket-side contacts

Y1-Y3, YEA

detector-side contacts

Ω1, Ω2

comparative figures

Claims (10)

1. Use of a bipole (R1) fitted in a hazard warning system socket (3) for releasably receiving a hazard warning system (1) for setting one of the at least two operating modes of the hazard warning system (1), wherein an electric characteristic of the bipole (R1) is able to be read out electrically by an electronic control (4) of the hazard warning system (1) via two pairs of electric contacts (X2, Y2; XEA, YEA) that contact each other in the received state of the hazard warning system (1), characterised in that the said electronic control is configured, on the basis of the detected electric characteristic of the bipole (R1), to set one of at least two operating modes of the hazard warning system (1).
2. Use according to claim 1 wherein, for the setting of the desired operating mode, a corresponding set of parameters (PAR1, PAR2) and/or a corresponding operating program is loaded from the electronic control (4).
3. Use according to claim 1 or 2, wherein at least one pair of electric contacts (XEA, YEA), which is usually provided for external connection of an optical and/or acoustic alarm emitter, is used to read out the electric characteristic of the bipole (R1).
4. Use according to one of the preceding claims wherein, for setting the respective operating mode, a suitable resistance value for an electric resistor (R1) is selected as the bipole, which is assigned to a comparison value (Ω1, Ω2) assigned to the respective operating mode, especially within a predeterminable range of values.
5. Use according to one of the preceding claims, wherein the hazard warning system (1) is a fire alarm embodied as a point detector, an acoustic alarm emitter, an optical alarm emitter or an intrusion alarm.
6. Hazard warning system which is embodied to be releasably received in a hazard warning system socket (3) tailored constructively thereto, wherein the hazard warning system, on its side facing towards the hazard warning system socket (3), has a series of first electric contacts (Y1-Y3, YEA), which in the received state of the hazard warning system in the hazard warning system socket (3), makes contact with a series of opposing, second contacts (X1-X3, XEA), of which a first part (X1-X3) is provided for connection to an alarm line (2) or alarm cable at least for electric power supply of the hazard warning system and of which a second part (XEA) is not intended for connection to the alarm line (2), wherein the hazard warning system has an electronic control (4) via which an electric characteristic of a bipole (R1) fitted in the hazard warning system socket (3) is able to be read out electrically, wherein the bipole (R1) is able to be read out either via two electric contact pairs (XEA, YEA) which are not intended for connection to the alarm line (2), or via a first electric contact pair (XEA, YEA, which is not intended for connection to the alarm line (2) and via a second electric contact pair (X2, Y2, which is intended for connection to the alarm line (2) characterised in that the said electronic control (4) is configured, on the basis of the detected electric characteristic of the bipole (R1), to set one of at least two operating modes of the hazard warning system (1).
7. Hazard warning system according to claim 6 wherein, for the setting of the desired operating mode, an appropriate set of parameters (PAR1, PAR2) and/or an appropriate operating program is able to be loaded from the electronic control (4).
8. Hazard warning system according to claim 6 or 7, wherein the electronic control (4) is configured to read in different resistance values as electric characteristic variables or to determine a variable derived from said values and wherein the electronic control (4) is configured to set the corresponding mode of operation for a respective permissible comparison value (Ω1, Ω2) or for the variable derived therefrom.
9. Hazard warning system according to one of claims 6 to 8, wherein the electronic control (4) comprises a microcontroller (5) and whereby the electric characteristic of the bipole (R1) is able to be read out at least indirectly via an input/output port (EA) of the microcontroller (5).
10. Hazard warning system according to one of claims 6 to 9, wherein the hazard warning system is a fire alarm embodied as a point detector, an acoustic alarm emitter, an optical alarm emitter or an intrusion alarm.

Images