JPS5920098A - Method and apparatus for detecting measured value of informer and mark thereof - Google Patents

Abstract

1. A method of automatically demanding the signal measured value and the signal identification in a haxard alarm system having a central unit and at least one signal line (ML) to which a plurality of signals (M) are connected wherein during cyclic interrogation, in each signal (M) a timing element (T1) which can be influenced by the signal measured value by means of a measuring transducer (MW) is connected to the signal line (ML), and the signal address is derived from the number of the increases in the signal line current (1L) which are effected in the central unit thereby, and the signal measured value is derived from the length of the respective switching delay, where an additional current pulse is produced by means of an assigned timing element (T2) as a result of temporary connection of a load resistor (R) to the signal line (ML), characterised in that the pulse shape of the additional current pulse is changed for a signal identification (e.g. signal type, signal state) in a predetermined and defined manner and the identification value characteristic of the respective signal (M), is derived therefrom in the central unit.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and a device for automatically detecting an alarm set point and an alarm indicator in a notification device, such as a danger notification device. In that case, if this danger alarm device is used,
It has a reporting center and at least one reporting line, and a plurality of alarms are connected to the 1m reporting line. At each alarm
/'i, 1 when periodically detecting from the notification center
The alarm address is derived from the number of rises in the one reporting line current in the three reporting centers in which the timing element, which is turned over by one measuring shift of the alarm, is connected to the reporting line via a fixed direct converter, and the delay time is From the length of , it is possible to derive the length of the time period. In this case, by briefly connecting the negative M resistance to the reporting line by means of the associated timer, the
generate a response.

Danger notification devices are often equipped with various alarms. For example, a smoke alarm, heat alarm, flame alarm, push button alarm, etc. are connected to a fire alarm device.

The physical characteristic quantities defined in the event of a fire are evaluated in the alarm system according to a suitable algorithm.The standard digital signal 7 signals are transmitted to the notification center in the alarm system.In this case, different characteristics M′, information: (() may be evaluated according to different algorithms within the device.
In addition, a reporting device dedicated to this and 'ri is also known. With this device, the fire characteristics are not evaluated within the alarm, but are sent analogously to the notification center using a suitable transmission method. (ta) is for all alarms (jllll)
Ill all 1 corrections.

Such a notification device is described, for example, in Patent No. 2,533,330 of the Federal Republic of Paiso. This device allows all alarms connected to one line to have their own delay times! 7) When detecting a call after the elapsed time,
In order to extract the DC pulse, the alarm was proportional to its mll constant value. detected by the pulse duration. The emergency notification center evaluation device detects the address of each alarm by measuring the delay time, and by measuring the pulse width, it detects the alarm device ○analog ml fixed 1st shift.

With this method IC, it is possible to detect not only the instantaneous alarm measurements but also the alarm address by detecting the periodic ringing of each alarm. In this case, the alarm address is detected (identified) from the delay time on the alarm device side.

・♀ Analog l141 from pulse duration (pulse width)
However, in this method of transmitting the tdll constant value, another characteristic quantity, an indicator indicating the type of intermediary device (smoke alarm, temperature alarm, etc.) No signal is generated, 1-'Fn 25th
33:382, this type of lI! It describes how to disable the i-information device. This method hR
, At the beginning of each detection cycle, all annunciators are awkwardly separated from the reporting line. Next separated alarm +ri
, such that each annunciator additionally connects the following annunciator to the line voltage after a delay time corresponding to its measured value has elapsed.
are connected in a predetermined order. At this time, the evaluation unit at the alarm information center detects each alarm address from the number of times the line current rose before μ, and also detects a defined value from the length of the corresponding time delay. The analog alarm ml+constant signal is combined and processed in order to identify and issue fault information or warning information in the reporting center.

However, it is not always possible or meaningful to evaluate and process the defined values of various alarm devices in a uniform manner. For example, in automatic smoke alarms, integral characteristics are more suitable for blocking short-term disturbances. In this case, a warning is issued only when the signal lasts for a predetermined time. In contrast, with a manual alarm, it is necessary to issue a notification immediately after the pushbutton alarm is operated.

In fact, if you activate the alarm for inspection purposes, for example, there is no need to issue a blue alarm.

The alarm only needs to send a response to the notification center.

In this case, it is necessary to identify the types or different operating states of the various alarms and communicate the results to the reporting center. Signals indicating the type and status of the alarm are entered into the II information center, typically manually, for the alarm in question. For each alarm in the reporting device, a unique sign (the indicator of the alarm)
Kind of, an alarm when you're being frugal.

□ Memorized in the center (unconnected alarms, etc.). The entry of such alarm indicators is generally carried out manually and stored accordingly via a switch or a keyboard. In this case, the input data must exactly match the actual state of 4#. However, since the m-report device cannot reliably detect errors occurring during input or errors associated with exchanging @iI(]5, serious consequences may occur when issuing the m-report.

Deutsche Bundesführer 1S Patent Publication No. 2638068 describes a fire notification system having a number of alarms connected to a notification center via a notification loop. In this device, each annunciator is connected to the line for detection by a timing element that can be controlled by a measuring transducer.

In this case, in the YTD center, the rise in line current caused by the connection of the individual alarms is measured, and the point of rise is evaluated as the alarm address and the alarm measurement value. At this time, by means of the timing element of each annunciator, a load resistor that increases the line current is connected to the short-time annunciation loop via a capacitor. This generates a surge current in the form of an additional current pulse ξ, which uniquely identifies the activation connection of the subsequent alarm. However, even with this notification device, characteristic quantities other than the alarm address and the analog measurement part of the alarm are not transmitted.

OBJECTS OF THE INVENTION The object of the present invention is to provide an indicator of the alarm in addition to the measured value of the alarm and the address of the alarm, based on the additional current pulse described in the above-mentioned German Patent Application Publication No. 2638068. An object of the present invention is to provide a method and apparatus for automatic detection. In this case, when periodically ringing and detecting the alarm, it is necessary to automatically detect the indicators specific to the alarm, and also to be able to detect and evaluate additional alarm indicators in the notification center.

Structure and Effects of the Invention According to the present invention, this problem is solved by a structure having the features set forth in claim 1.

According to the invention, the additional current noculus that briefly increases the line current of the reporting line is controlled as follows. That is, the characteristic quantity characteristic of each alarm is derived from the additional current noll ξ that has changed in a predetermined manner.

In this case, it is advantageous if the magnitude of the amplitude of the noise ξ is a characteristic quantity for the type of alarm, for example.

In another embodiment of the invention, the pulse duration is varied.

Therefore, a characteristic quantity specific to the alarm is derived from the length of the additional current pulse.

In this case, if two characteristic variables for each individual alarm are to be detected, it is advantageous to vary the amplitude and duration of the additional current/ξ pulse in a manner specific to each alarm. Each of the annunciators connected to the notification line then generates an additional pulse of different amplitude and duration upon detection of a call. With this method, during one detection cycle, two alarm characteristics, in addition to the alarm address and the alarm measurement value, can be transmitted to the notification center and evaluated there.

Furthermore, the device which is the object of the present invention has the features set forth in feature M'+claim 5 (solved by h).

In that case, a second timing element is connected downstream of the first timing element of each alarm, and this second timing element has an additional current of o
A load resistor that generates pulses is connected for a predetermined period of time.

In this case, the amplitude of the B pulse is controlled by the resistance value. Therefore, it is advantageous to adjust the setting of the indicator of each annunciator by means of the load resistance.

Advantageously, the width of the additional ξ pulse 4 is controlled by the second timing element. Therefore, the second alarm indicator can be set and adjusted for each individual alarm. In this case, the second timing element is formed from a monostable multi-pie break, to which the it C element is connected.

DESCRIPTION OF EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a basic block circuit diagram of notification≧juice according to the present invention. The alarm M is connected to a notification center (not shown) via a notification line ML. Report line M
J is made up of conductors ], 2, between which a voltage L is applied from the reporting center. Alarm M is electric eye-U
It has a timing element T1 that operates when is applied.

The delay time of the time element ′■゛1 is 1~■
controlled by At the beginning of the detection cycle, one
The line voltage U is interrupted for a short time in order to take 1-1.

Timing element 'r] fd: Since it starts operating at 1 o'clock when the voltage U is applied, it is difficult to block the line voltage U. -01 is provided.Capacitor C1 is connected for a short time when voltage U is μ'q, 1YJi, 1titl
Power is supplied to the constant variable V* '& yr w. In this case, the dimade 1) 1 prevents the reverse feeding of the current. After the delay time of timed system-f-1''l has elapsed, the transistor '
1" R] The crab is then conductively connected to the subsequent alarm. In this way, the 1N alarms are connected in sequence in a chain and the analog measurement value of the member is connected to the alarm. size p
tc r6. The timing element "l" is controlled accordingly. 1st
The force ζ to which the second timer element 'I'2 is connected to the timer system E'I'1 is also connected at the same time. Second
The output signal of N element '1'2 is sent to the second transformer, register '1' R2! 1] Ibuchi 1. Transistor ゛I' I(, 2 is connected to insect alarm loop by resistor It).
The 11 Shishi Rusu of Sunto t+ +Yr flows, and Sowa increases the wet route Ryukei C by a short amount. This additional current/ξlux can be controlled in a predetermined manner and can therefore be used as additional information. Thus, when a call is made, the annunciator beacon signal is activated by the annunciator i! It is transmitted to the reporting center at the same time as the +11 fixed value and the alarm address.

In that case, the resistor 1 (, the resistance (directly the additional current ??
The amplitude of the pulse can be controlled and its duration can be controlled by the second timing element '1'2. It is obvious that ti1 =+.

By these methods, the amplitude of the pulse can be changed.

The duration of the pulse can be changed. Indeed, by combining the two methods, in addition to the alarm measurement value and the alarm address, two other characteristic quantities of the alarm can be transmitted to the notification center.

FIG. 2 shows a modified embodiment of the apparatus shown in FIG. Here, the time-determining element 'I'2 of FIG.
, C, , are connected. This RO element It,,C
T determines the instability period of monostable multi<H ebsee2MF. The first limiting element T I triggers a monostable multibibreak M P, the output of which controls the transistor 'I' l(2).

FIG. 3 shows the characteristics 1. of the current flowing through the reporting line ML during the detection period. It shows. If the type of alarm is different, resistor 1
The resistance value of 'L is also different. It is therefore possible to adjust the setting of the indicator indicator, for example the type of indicator, by means of a corresponding resistance value. Since the resistance I (is the additional current) ξ controls the pulse amplitude A, the magnitude of the amplitude A can be used as a characteristic quantity for the alarm. If the duration is constant for all annunciators, then the pulse width ξ is also constant for all annunciators.At the beginning of the alarm cycle of the b-way, the first annunciator e.g. The connection is made at the time t1.The connection duration is determined by the annunciator measurement via the first timing element '1'1, which in FIG. 3 is the period T11.The time t1
2, an additional current current ξ flows through the load resistor 1t. This current norm ξ has an amplitude A. The duration of the additional current pulse is constant for all alarms and its value is t. At time 12, a second annunciator is connected via the transistor TR]. Time '12 elapses from the connection of the first load resistance of the first connection to the connection of the load resistance of the second alarm. Time point 1
By 3, the load resistance of the second annunciator produces an additional current pulse with amplitude A2. In this way, each annunciator is chained in turn, and an additional current pulse is generated corresponding to each annunciator and having an amplitude characteristic of the annunciator. These amplitudes are evaluated and stored for each alarm at the reporting center.

Figure 4 also shows the course of the current flowing through the reporting line during the detection period.
1. It shows. In this case, the resistor R in the annunciator and therefore the amplitude A are constant, and the delay times of the timing elements 'I'2, TI2, etc. are different for the valley annunciator.Characteristics of the annunciator The amount is, for example, I(C element R, , C
It is adjusted by , , . Current characteristics 1l shown in Figure 4
-1, shows a similar course to that in Figure 3, but differs in the following points. That is, the magnitude of the amplitude A of the additional current) pulse is constant, but its duration 11, 12 □) 13 etc. is different, which is a characteristic identification criterion for each alarm sign.

Combining the two methods described above allows two additional annunciator indicators to be transmitted to the notification center for each annunciator upon discharge.

[Brief explanation of drawings]

FIG. 1 is a block circuit diagram showing the principle of the alarm of the device according to the present invention, FIG. 2 is a block circuit diagram of a modified embodiment of the alarm shown in FIG. i1, and FIG. FIG. 4 is a line section showing the characteristics of the current flowing through the reporting line during the detection period. M...Alarm, MI-...Notification line, M W-jj
Constant converter, 'r' 1, 'r 2・timing element, N
IF Monostable multi pie break FIG 1 FIG 3

Claims (1)

[Claims] 1. It has four reporting centers and at least one reporting line, and a plurality of alarms are connected to the reporting line, in which case,
During the 161st detection cycle, in each alarm, a timing element is connected to the reporting line via a measuring transducer, which is controlled by one measurement cycle of the alarm, and at the communication center, the reporting line current is Derive the annunciator address from the rising return and derive the 'ri annunciator measurement from the length of the delay time, in which case:
An additional DC pulse is generated by briefly connecting the load resistor to the reporting line by means of an associated timing element.・In a method for detecting the measurement error of the alarm and the sign of the alarm in the alarm device, the shape of the additional DC noll ξ is changed in a predetermined manner according to the sign of the alarm, thereby detecting the alarm. Method 2 for detecting measured values of an alarm and indicators of an alarm, characterized by deriving a characteristic quantity characterizing the alarm in a center, by changing the amplitude of the additional current noll ξ A method 3 for detecting a measured value of an alarm and an indicator of an alarm according to claim 1, wherein the duration of the additional DC noll ξ is varied. Method 4 of detecting measurements and alarm signs;
Method 5 for detecting measurements of an alarm and an indicator according to claim 1, characterized in that the amplitude and the duration of the additional current noll ξ are varied, a notification center and at least one notification line are provided. a plurality of annunciators are connected to the reporting line, a timing element in each annunciator being controlled by the annunciator measurement value via a measuring transducer during one periodic detection cycle; is connected to the reporting line, the reporting center calculates the alarm address from the number of rises in the reporting line current, derives the defined value of the alarm from the length of the delay time, and at that time, the associated time element An example of this is to generate an additional current pulse by briefly connecting an additive resistor to the reporting line, and to change the additional current nozzle in a device for detecting alarm readings and alarm markings in a reporting device. For this purpose, a second timer (T2) is connected after the first timer (T1) in each alarm, and the second timer is connected to the load resistance (R,) k for a predetermined period of time. A device for detecting measured values of fil and indicators of an alarm, characterized in that it is connected to a reporting line (ML). . 6 The second timing element (T2) consists of a monostable multi-S ibrator (MF), which is provided with an I'LO element (rtT, O
A device for detecting 1141J constant darkness of an alarm and a mark of an alarm according to claim 5 to which T) belongs. 7. mll fixed value and @ of the alarm according to claim 5, wherein the imaging width of the additional DC pulse is determined directly by the resistance of the load resistor (R) as the first characteristic quantity of the alarm
Device for detecting signs of affiliation. 8 The duration of the additional current pulse is the second 'I' of the annunciator.
As the amount of IE, R of monostable multivibrator (MF)
Device 3 for detecting the measurement 1st shift of the alarm and the sign of @affiliation according to claim 5 defined by the e-element (RT, CT)