CH638916A5 - Alarm. - Google Patents

Description

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PATENT CLAIMS 13. Alarm system according to claim 12, characterized in

1. Alarm system, consisting of several stations (1 to 6) net that an alarm lock (27) is present, which after optical and / or acoustic alarm devices (7), unlocking the alarm trigger for a certain one at the transmitter and receiver blocks safety time via a power supply network.

are connected to one another, characterized in that s 14. Alarm system according to claim 13, characterized in that each station has means for triggering the alarm (8) and its own network, in that connection options are provided in order to provide perisel-independent power supply (10) which can be charged by the network (9). phere alarm triggers, e.g. Have door contacts, foot contacts and RF transmitters (17) and RF receivers (18) that can be connected via or burglar alarms.

a common carrier frequency, which overlaps the network. 15. Alarm system according to claim 14, characterized in

is connected in such a way that in the case of the io net, the alarm lock is only provided for alarm contacts (29) that can be connected to the alarm alarm triggering from one station from the outside and one of all other stations is put into operation . separate lock switch (30) is present.

2. Alarm system according to claim 1, characterized in that 16. Alarm system according to claim 15, characterized in that an intermediate memory (19) is present which stores the net that at the alarm triggering station by a acknowledgment alarm trigger and triggers the alarm with a time delay , signal is one or more microphones (31) switched on, the alarm being triggered within the delay time, the recordings of which can be transmitted to the other stations. be.

3. Alarm system according to claim 2, characterized in that 17. Alarm system according to claim 16, characterized in that the means for triggering the alarm for each station are different, that trigger the coded signal in addition to the microphone (31) when the alarm is triggered and that at the stations Display 20 den the station also the radio frequency transmitter (17) and a Tonmo facilities with eg Indicator lamps (11 to 16) present dulator (32) can be switched to continuous operation.

are which, depending on the coding of the signal, identify the alarm 18. Alarm system according to claim 17, characterized by the triggering station. net that switching on the microphone via an «AND» -

4. Alarm system according to claim 3, characterized in that link (33) takes place only when and when the alarm is triggered. that the coding for each station is a different transmitted station identifier, the number of the transmitted number of electrical pulses is provided, which are given numerically by counting pulses with the station identifier of the alarm pulse generators (21) to the RF transmitter (17) and the transmitting station and if at the same time there is a counter (22) as a display device, whose acknowledgment signal is emitted by an alarm receiving station

Display of the code pulse number assigned to the stations is resolved, which speaks the zero position display (26) which gives the alarm. 30 activated the station.

5. Alarm system according to claim 4, characterized in that 19. Alarm system according to claim 17, characterized in that the counter (22) of the alarm triggering station when it reaches that the alarm receiving stations by actuating its own station assigned number of pulses, the deletion of the delete key blocks the switching of the carrier frequency-further transmission of pulses. on modulated sound reception.

6. Alarm system according to claim 5, characterized in that the alarm device according to claims 18 and 19, characterized in that the alarm device in the alarm receiving stations is characterized in that a discriminator circuit (28) is automatically limited in time or programmable, which the system can be switched when receiving continuous operation and switches display devices with a carrier signal to sound reception.

Memory (23) are provided, the alarm triggering state 21. Alarm system according to claim 20, characterized in

tion until the alarm receiving 40 net that devices for sound recording are provided, stations a manual delete button (24) is pressed. those entered when switching the alarm system to sound reception

7. Alarm system according to claim 6, characterized, are switched.

that when the display device of a station is deleted, a 22nd alarm system according to claim 21, characterized in that the acknowledgment signal is received as confirmation of the alarm received, that a device for radio reception in the system can be emitted automatically. 45 is provided and the system externally disguised as a radio

8. Alarm system according to claim 7, characterized.

that one or more alarm receiving stations is one of the 23. alarm system according to claim 22,

Acknowledgment signal that can be triggered by means of a button (24) excludes that the display is a digital numerical display, the send which consists of the deletion memory (25) being triggered after the user has triggered the transfer from one station display to the next by pressing button (24) ) can be switched on, 50 of which a large number of counting pulses takes place.

on the one hand activates the pulse generator (21) and the HF transmitter (17) and emits counting pulses which, at all receiving stations, continue to count the counter (22) from its alarm-indicating station identification until the zero position is reached.

9. Alarm system according to claim 8, characterized in 55

that a zero position indicator (26) is present, which relates to an alarm system consisting of

Indicates the position of the counter in its starting position. several stations (1 to 6) with optical and / or acoustic

10. Alarm system according to claim 9, characterized gekennzeich- see alarm devices, in which the transmitter and receiver net that the superimposed carrier frequency pulse trains are connected to each other via a power supply network, are coded such that they are only from a certain group 60 The currently on the Market alarm systems set-by stations are processed. usually either a loud alarm signal, e.g. a siren, in

11. Alarm system according to claim 10, characterized in operation or they give alarm signals directly to a police network that a service part as a code for the carrier frequency pulse trains.

binary number code each for a group of stations. Both methods have the disadvantage that it is mainly seen at. 65 false alarms at least a nuisance to the environment or a

12. Alarm system according to claim 11, characterized cause unnecessary intervention by the police. Furthermore, net has led to the fact that different carrier frequencies for different so-called "loud alarms" in many cases lead to groups of stations. that the perpetrators panic, which is too uncontrolled

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and sometimes lethal affect acts degenerate Such a circuit can be done with electronic components. len simply build up and is clear in the display.

The direct alarming of the police, which is anyway for such an arrangement with counters, has the advantage that

Private households are not permitted, an immediate counter of the alarm-triggering station does not always result in the presence of police officers, who only have to travel further distances to the alarm point via a certain number of pulses assigned to this station. Can block the transmission of pulses.

There is a real need for a warning and alarm. In this way it is easy to give each station a

location, which on the one hand mobilizes help reliably and quickly, assigning the number of impulses that are counted by the own counter without being given a loud alarm, especially in the event of a fault, and that the station controls itself, so to speak, by annoying the environment or unnecessarily intervening in the police - to initiate fen after sending the appropriate number of pulses. stops the pulse generator.

This object is achieved by the alarm system according to the invention. Another embodiment is that in the case of the fact that each station has means for triggering the alarm (8) and alarm receiving stations, the alarm devices temporarily limit their own, independent power supply which can be charged by the network (9) or programmed to be put into operation and gung (10), an RF transmitter (17) and RF receiver (18) '5 display devices have a memory that has the alarm and the stations can be recognized via a common carrier-free triggering station, until at the alarm rate, which is superimposed on the network, receiving stations are connected to each other by hand, so that a delete key is operated so that in the event of an alarm being triggered by one.

Station the alarm devices (7) of all other stations in this arrangement takes into account the fact that a

Operation. 20 unlimited beep when the

This arrangement already has the advantage that an entire apartment owner does not help, but that there is still a desire for a number of neighbors who can be reached in the immediate vicinity to be triggered by the system if they return to the apartment. The system can also be recognized by the most alarm.

Mains power independent, so that even a failure of the power supply to indicate to the alarming station that the supply would not mean a failure. Nevertheless, the alarm is actually recognized and received by 25, the connection of the alarm systems to the network is given in the simplest way with the deletion of the display device of a station via a carrier frequency, the connection to the other acknowledgment signal as confirmation of the received alarms, without a complicated installation.

would be. It is essential that when an alarm is triggered by A particularly simple option, an acknowledgment signal

one station all other stations are alerted. To transmit 30 nal to the person giving the alarm consists of

A special embodiment of the alarm system consists of one of the stations, the counters of one of the deletions - the fact that there is an intermediate memory (19), which memory, which activates “its” pulse generator, stores the alarm triggering and triggers the alarm with a time delay - Pulses are fed until it releases into its starting position, whereby the alarm is triggered (zero position) within the delay time.

can be deleted. 35. A display is advantageously used for the zero position

This intermediate memory permits a new type of advance warning, which shows that the counter is in its starting position with a possible, but not yet recognizable, drone.

hung. For example, there could be a single person in Since the counters of all stations in the normal case, i.e. in front of an apartment when the doorbell rings, the alarm must always be in the zero position, an alarm can be activated that delays the buffer to such a zero position display the operational readiness. After opening the door it turns out that an acquaintance recognizes stations.

a visit, it is possible to delete the alarm triggering entered again without further operational safety of the system against external impulses, especially that the alarm signal is actually sent to the other stations in the event that that multiple group alarm systems are passed on in one. «Buildings or blocks of buildings exist.

On the other hand, in the event of a real threat which, in such a case, the superimposed on the network are no longer capable of triggering an alarm, auto carrier frequency pulse trains would be coded in such a way that they only table the system after the delay time and the other one of a particular one Group of stations can be recognized. Alert stations. Such an encoding can easily be seen as a binary number.

Even in the event of a “forgotten” scenario, the worst case scenario would be to run lencode to clarify the situation when the carrier frequency pulse sequences are queried. is shaped and which is presented for a group of stations

Since there are several stations, it is expedient to see it.

to improve the alarm system in that the means for also using different carrier frequencies for

Each station is triggered by an alarm, a differently coded signal is provided - different groups of stations are provided.

and that at the stations display devices with e.g. 55 In order to be able to use the warning and alarm system also for an automatic indicator lamp (11 to 16), which can be used as a room protection system depending on the alarm triggering during the absence of the apartment contents and the coding of the signal. Alarm lock provided, which after unlocking the

With such a design of the alarm system, alarm triggering can still be blocked for a certain security time, immediately recognizing from which station the alarm is triggered 60 Such an alarm block allows the apartment owner to switch on all the automatic alarm devices and Morse code without having to give a specific signal or similar needs. to actuate the release shortly before leaving the apartment.

A simple display device is thereby created. During the security period, the apartment can then be left without a different code for each station, the door locked, etc., without an alarm being triggered. The number of electrical pulses provided by the Turns 65.

Pulse generators are given to the RF transmitter, and that such an alarm block allows, especially in connection

Display device counters are available, the display of the manure with a buffer that corresponds to the alarm triggering of the code pulse number assigned to the stations. delayed and which can be deleted, the combination of the

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Warning and alarm system with all peripheral alarm triggers, the door contacts, foot contacts or similar burglar alarms, which respond to the return of the apartment owner, but whose alarm can be cleared before being passed on.

In order to always keep the direct alarm signal or the delayed pre-warning ready for operation, it is also provided that a separate blocking switch is provided which only blocks the alarm contacts that can be connected from the outside. This is particularly important, since in an emergency the unlocking of the lock switch could be overlooked and a manual alarm would not be passed on.

Since the connection between the individual stations is made via a carrier frequency, the acknowledgment signal on the alarm-triggering station switches on a microphone, the recording of which is transmitted to the other stations.

This enables acoustic monitoring in the vicinity of the alarm station or if additional microphones are arranged, even a larger number of rooms can be monitored. The advantage of such an arrangement is obvious, since in real danger, conversations with the perpetrators or threats may be transmitted immediately. In addition to the microphone at the station which triggers the alarm, the RF transmitter and a sound modulator are expediently switched to continuous operation. The transmission of further pulses via the carrier frequency system is thereby prevented, but after the activation of the microphone is only initiated by the acknowledgment signal of an alarm receiving station, this is of no importance.

In order to avoid misuse of the "listening system", it is provided that the microphone is switched on via an "AND" element only if, when the alarm is triggered and the station identifier is transmitted, the number of counting pulses transmitted corresponds numerically to the station identifier of the alarm station and if at the same time an acknowledgment signal is triggered by an alarm receiving station which activates the zeroing display of the alarming station.

This safeguard against unwanted "eavesdropping" is conclusive, since the stored alarm display of the own pulse number can only be triggered by the station that triggered the alarm, on the other hand, it requires the receipt of an acknowledgment signal from an alarm-receiving station, which brings the counter of the alarm-triggering station to its zero position , and only then and only then does the «AND» element switch on the microphone or the modulator and RF transmitter.

In addition, it is expediently proposed that the stations receiving the alarm be switched over by pressing the delete key to switch the carrier frequency receiver to modulated sound reception. With this arrangement, a special actuation is superfluous, since the delete key must be actuated in any case to stop the alarm devices.

A description of an exemplary embodiment of an alarm system according to the invention is to be given below.

1 shows a schematic block circuit for six stations 1-6, which are connected to the network 9,

2 shows an exemplary embodiment of an alarm station according to the invention as a schematic block diagram. Station 3 is shown in this figure.

supply 10, an RF transmitter 17 and an RF transmitter 18, which are not shown in this schematic representation.

In the "waiting position", which is ready for operation, each station 1-6 is connected to the network 9. The power supply unit 10, not shown in FIG. 1, continuously charges a built-in battery insofar as there is voltage on the network. But even in the event of a power failure, the battery ensures that it is ready for operation again. Since the power supply 10 is designed in a known manner, it will not be dealt with in the following.

It is essential, however, that the HF receiver (FIG. 2.18), which is also not shown in FIG. 1 for reasons of simplification, is always switched on and is waiting for alarm signals.

In Fig. 1 e.g. alarm given by station 3 by moving lever 8 into the position shown. As a result, an alarm was triggered at the other stations and the alarm devices 7 emit an acoustic signal. At station 3 this signal is suppressed because you want to achieve a "silent alarm".

In Fig. 1, display 20 lamps 11 to 16 are also shown schematically at each station, each of which is individually assigned to stations 1 to 6, such that display lamp 11 corresponds to station 1, display lamp 12 corresponds to station 2, etc. . For the accepted alarm of station 3, the indicator lamp 13 has therefore lighted up on all stations and allows 25 all stations to recognize that the alarm has been given by station 3.

In this example, too, it is presupposed that the power supply unit 10 ensures permanent operational readiness and the HF receiver 18 with counter 22 is always switched on. The tough 301 22 is in its zero position. The zero position display 26 shows this and thus the operational readiness of the station.

The direct alarm is normally given via the button 8 and the alarm signal is stored in the alarm memory 28. If you want a delayed alarm triggering in the sense of a. 35 pre-warning, the alarm signal can be fed to a buffer 19 via the button 20, which only forwards this signal to the actual alarm memory 28 after a certain delay. If the forwarding of the prewarning is to be prevented within the delay time, the buffer 19 can be deleted using the delete key 24.

As soon as the alarm memory 28 has received an alarm signal, it releases the pulse generator 21, which is coupled to the RF transmitter 17 and now outputs RF pulses to the network 9. These HF-45 pulses reach all other stations, but also their own HF receiver 18, which transmits these pulses to the pulse counter 22 via a counter lock 34. The outputs of the counter 22 are connected to a display memory 23 with the indicator lamps 11 to 16. According to the incoming pulses like this, the counter first turns the indicator lights 11,

then let 12 and then 13 light up.

The only difference between stations 1 to 6 is that the display which corresponds to the station number, in this case display 13, is not forwarded to the 55 "or" link 35, but is returned to the alarm memory 28, which is deleted as soon as the display 13 is live. By deleting the alarm memory 28, the pulse generator 21 is also blocked and no further pulses are sent.

6o Since the counters of the other stations have also counted the pulses, all counters and display memories are now on display 13. The memory 23 stores the displays for the indicator lamps 11 to 16 with a slight delay, see above

FIGS. 3 and 4 show examples of pulse sequences that when the lamp is counted quickly, the lamp 11 goes out,

Each of the stations has alarm devices 7, schematically when the lamp 12 lights up, the lamp 12 goes out when the table is represented as a loudspeaker, and means for triggering the alarm, the lamp 13 lights up, etc. However, as soon as an indication of solution 8, in this example as Lever switch shown. Each of the delay times remains, this value is stored in stations 1, a power supply that can be charged by the network 9 until it is deleted using the delete button 24.

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In the example of FIG. 2, no signal is given to the “OR” element 35 in the station 3 shown as an alarm station, even when the display 13 is stored in the display memory 23. On the other hand, at all other stations at which the display 13 is connected to the "or" element 35, a signal is passed on to the tone generator 36 and from there to an amplifier 37 and finally its acoustic signal to the acoustic alarm device 7.

This will alert all other stations acoustically (or optically) to nearby people. At all stations it can be seen from the indicator lamp 13 that station 3 has triggered the alarm and the first person who has heard the alarm will press the delete button 24 at his station in order to shut down the alarm device of his station. By pressing the delete key 24, the display memory 23 is first deleted and the tone generator 36 with its tone amplifier 37 and the acoustic alarm device 7 are thus switched off via the “OR” element 35.

At the same time, pressing the button 24 causes the erase memory 25 to be switched on, which in turn allows the pulse generator 21 and the HF transmitter 17 to operate again. Further counting pulses are sent out, which at all stations cause the counters 22 to continue counting from the position corresponding to station 3 until they return to their zero position after reaching the last counting position. This return to the zero position can first be recognized by a zero position indicator 26, which also emits a signal which shuts down the erase memory 25 and thus also blocks the further transmission of pulses. In order to avoid over-counting via the zero position, which could result from the fact that several stations have pressed the delete key at the same time, a counter lock 34 is arranged at each station between the HF receiver 18 and the counter 22, which is activated by the zero position indicator 26, and only for a short blocking period.

Since the erase pulses are also received at the station 3 giving the alarm, the counter 22 of the station 3 has also reached the zero position. The zero position indicator 26 will also light up at the other stations, indicating that a station has already received and acknowledged the alarm. Since the station giving the alarm can still be recognized by the display lamp 13 in the display memory 23, all station owners can still see where the alarm came from, despite the counter having returned to the zero position.

By pressing their delete button 24, they can delete the display memory, but the delete memory 25 can no longer send out further pulses since it is blocked by the zero position display 26.

It is different with the alarm station. There are side by side the zero position display 26 and the display lamp 13. In the exemplary embodiment described, these two signals are supplied to an AND gate 33 and only reach the sound modulator 32 with its microphone 31 and switch this and that if both signals exist simultaneously RF transmitter 17 a. The HF transmitter 17 now transmits the “sounds” heard by the microphone 31 to all other stations. At all stations, a permanent carrier signal is now received via the HF receiver 18, which means that a discriminator 38, which is combined with a sound modulator, transmits the sound frequencies to the amplifier 37 and the loudspeaker 7. The sound amplifier 37 and possibly a sound recording device 40 are also switched on via the switching line 39. At station 3, however, amplifier 37 is blocked from display 13.

Now, in fact, as soon as it acknowledges the alarm reception and has thus switched off the tone generator 36, each station can actually hear what is going on at the station 3 which gave the alarm.

The tape recorder 40 records the voices of the perpetrators and the conversations.

In the circuit shown as an example, particular attention is paid to a clear arrangement of the components, but modern digital electronics offer a lot of alternatives with regard to integrated circuits, which allow the solution according to the invention to be implemented by other means. In this regard, the example is purely descriptive, without restricting or limiting the invention.

On the other hand, there are a number of suggestions that extend the indirect scope of protection.

For example, FIG. 2 shows a protection against interference pulses according to the invention, which is claimed with the solution to the same problem. The safeguard consists in that, starting from the zero position, the first counter output 44 is not used to identify a station, but is connected to a delayed reset element 43, which returns the counter 22 to the zero position after the delay time has expired, if it has been there during the delay time Counter position remains. An occasionally occurring interference pulse from the network would thus possibly cause the counter to respond, but initially only let it run into this intermediate position, which corresponds to counter output 44, from which it automatically returns to the zero position after the delay time has expired. It is of course possible to provide a whole number of intermediate positions for this backup, from which the counter is automatically returned to the zero position. In the normal alarm case, the counter simply counts over this intermediate position.

Of course, the number of pulses received by the pulse generator is higher by the number of intermediate positions. That means e.g. with an intermediate position, the number of pulses 3 etc. is assigned to station 2. In the circuit diagram shown in FIG. 2, this results automatically in that the pulse generator 21 emits pulses anyway until the display 13 responds.

The arrangement of an intermediate safety position brings another combination advantage:

If the alarm button 8 and the delete button 24 are pressed at the same time, the system can be checked for functionality without triggering an alarm. First, the signal coming from the alarm button 8 is stored in the alarm memory 28 and causes the pulse generator 21 via the HF transmitter 17 to give a first pulse to the HF receiver 18 and thus to the counter 22, which thus moves from the zero position to the safety -Intermediate position.

The zero position display 26 and the lock of the erasure memory 25 which thus exists vanishes.

Since the delete key 24 is pressed at the same time, the delete memory 25 responds, clears the alarm memory 28 and causes the pulse generator 21 to output pulses until the counter 22 returns to its zero position and stops the delete memory 25 and thus the test run. This means that almost all components have been checked.

Fig. 3 shows four high-frequency square-wave pulses, which bring the counter 22 from 0 to 4 in an intermediate safety position, so that the display 13 connected there responds.

4 shows, for example, a binary-coded pulse sequence in which each pulse consists of four individual signals, which can be positive and negative.

The signals «+ - + +» shown in the binary number system correspond to the number «11» in the decadic system.

For this purpose, the HF transmitter 17 and the HF receiver are equipped in a known manner with coding or decoding accessories, so that the HF transmitter 17 outputs each pulse input by the pulse generator 21 as a coded signal sequence and the HF receiver 18 this signal sequence is initially identified

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10th

15

20th

25th

30th

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40

45

50

55

60

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and only signal sequences, e.g. correspond to the decade number “11” when the counting pulses are forwarded to the counter 22.

This not only ensures maximum security against intended or unintentional faults, but any number of group systems can be operated in the immediate vicinity without influencing each other. In such a case, each group receives a corresponding binary number code. Depending on the effort, any number can be implemented as a code.

This is just one example of coding, but any of the numerous coding methods known in the art are applicable.

In order to be able to use the alarm system also for room protection, a connection 45 is provided in the example in FIG. 2, to which external alarm contacts 29 can be connected.

Of course, this can be very complex room protection systems with ultrasonic probes, etc. act. It is essential that an alarm signal arriving at the connection 45 does not lead directly to the triggering of the alarm, but rather an alarm lock 27 is fed to the buffer 19 via 20.

The alarm system is now operated as room protection as follows:

The individual room protection systems with their alarm contacts 29 are connected to the connection 45 after the alarm lock 27 has been locked with the lock switch 30. The lock switch 30 is unlocked before leaving the room. Even if room protection systems respond when leaving the room, the alarm lock prevents his alarm signal from being forwarded for a certain time (e.g. 1 minute).

Any response by the room protection system after the blocking time will now trigger an alarm and be passed on to all other stations.

When the owner returns, the room protection systems will naturally also respond. However, since the alarm signals are routed via the buffer memory 19, which delays the transfer to the actual alarm memory 28, there is the possibility, by actuating the delete key 24, of the alarm signal * 0 stored in the buffer memory 19

to be deleted before forwarding to the alarm memory 28.

Of course, all room protection systems must be locked beforehand by the lock switch 30 in order to prevent a new, unintentional triggering of the alarm.

In order to camouflage the warning and alarm system externally, it is proposed according to the invention to set it up as a radio and, if necessary, even to provide a radio receiver part 41 with a switch 42.

The many possibilities of constructive design should only be pointed out with the examples above. When assessing the combination characteristics, it must be taken into account that seemingly insignificant measures, such as the camouflage as a radio, can save lives in an emergency.

On the other hand, technical simplifications such as the use of a single counter, which processes both the outgoing and the incoming impulses with a trick, and in doing so also perform a number of acknowledgment and test functions, are new and progressive in themselves.

Likewise, some of the dependent claims have a further independent and indirect scope of protection. For example, in cases where transmission of the signals over lines is easily possible, carrier frequency transmission could be eliminated without reducing the significant advantages of the invention.

The omission of the emergency power supply is also to be understood in this sense.

A special feature is the possibility according to the invention that a numerical display is provided as a digital clock as a display device, e.g. the hour display serves to identify the station giving the alarm and to switch from one station display to the next the 60 pulses for minute switching. If the pulse generator is stopped at «30 minutes» in such a circuit, the display is extremely reliable, since even 29 pulses too many or too few still result in the correct station display. It would also be easy to expand to 24 stations with a digital clock display. The digital clock can of course serve as a clock before receiving the alarm.

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2 sheets of drawings