WO1979000902A1

WO1979000902A1 - Alarm device partly mobile with protection against failure to operate,breakdown,sabotage and false alarm

Info

Publication number: WO1979000902A1
Application number: PCT/DE1979/000034
Authority: WO
Inventors: H Stadelmayr
Original assignee: H Stadelmayr
Priority date: 1978-04-07
Filing date: 1979-03-30
Publication date: 1979-11-15
Also published as: DE2815183C2; EP0014714A1; DE2815183A1; JPS55500742A

Abstract

The fixed alarm system partly or entirely mobile, comprises a multi-channel system with lateral inhibition, a switch operating on a hit-or-miss mode, one or more AND logic circuits connected in a chain configuration or in combination with said elements, and provides a protection against failure to operate, breakdown, sabotage and false alarm.

Description

Alarm system with increased protection against operational failure, malfunction, sabotage and false alarm, especially with semi-mobile versions.

Description and claims:

Field of use:

The invention relates to all types of alarm, security and monitoring systems, but in particular (partially) mobile systems. State of the art and criticism of the state of the art:

Video cameras, ultrasound detectors, infrared detectors, electromagnetic field detectors that work in the microwave range, field barriers e.g. IB. Photoelectric sensors, capacitive detectors, structure-borne sound detectors, field circuits, glass break sensors, reed and double reed contacts, etc. These detectors are always autonomous, i.e. each individual detector is used as a single unit.

On the transmission side there are alarm systems with their own cable routing, there is signal transmission through the power grid and signal transmission via radio.

However, all these types of transmission channels are only ever used individually, i.e. without combination, communication or (cross) correlation with each other.

Particularly in the case of mobile systems which either use the power network as message transmission or work by radio, there is a high susceptibility to interference in the signal transmission manifests itself either through a high failure rate or through an all too frequent, extremely annoying false alarm. In conventional VDS systems with their own wiring, however, there is also a high false alarm rate and susceptibility to sabotage despite difficult differential quiescent current circuits. The same applies to sensors (also in VDS design), which are used individually and must therefore be greatly reduced in sensitivity in order not to trigger false alarms permanently.

The redundancy of all these conventional systems is therefore too low to be able to guarantee relatively safe and secure operation.

Task:

The invention is based on the object, the known susceptibility to interference, such as Reduce failures, false alarms, sabotage options etc. in alarm security and monitoring systems (especially the partially mobile) or switch them off completely.

Solution:

This object is moderately achieved in that a multi-channel system with lateral inhibition and / or all-or-nothing circuit logic AND circuit or a chain of logic AND circuits and mutually monitoring a _¬ is set. This is essentially achieved through a combination of known systems.

This combination of the known systems erfoτceτt partially essentially new circuits and devices, however, the supply via the combination effect _¬ addition, even substantially increased safety and operability moments. Essentially, all transmission stages of this signal transmission system are multi-channel systems with increased redundancy.

Sensor side: At least two sensors of different types of operation, which are to monitor the same fuse field, are to be monitored here with regard to the alarm detector with lateral inhibition and / or all-or-nothing switching, i.e. e.g. be linked in a logical AND circuit or a chain of logical AND circuits. In the case of a quiescent current circuit, this logic quiescent circuit essentially corresponds to an electrical parallel circuit. The quiescent current circuit should of course be refined as possible to a differential current circuit.

Parallel connection of infrared sensors and ultrasound sensors is particularly suitable for the standard design of a commercial room surveillance system. To compensate for the different response times and sensor delivery times, e.g. each gate creation device (in the case of the lateral inhibition) or each logical AND circuit (in the case of the all or nothing circuit) are provided with a coincidence protection and a mutual short-term storage. This means that there must be a contact-holding device on both or all channels, which holds the signal arriving first at least until the second signal has the possibility of coinciding. To switch off sabotage, this signal holding circuit must of course operate for a limited time.

Both, the mutual creation of gates, or the chain of logical AND circuits result in a high level of protection against false alarms, since the sensor signals from the detector are only processed into an alarm signal if an alarm signal arrives at the detector processor via both or all sensor input channels , which is extremely unlikely in the event of false reports. The coincidence is through the mutual

Signal hold circuit secured. For example, from this AND circuit ^ _. a sabotage

Alarm message that affects differential current switching, of course not affected:

A fault in the differential current also one

Sensors., Automatically leads to a general or special

Alarm; at the end of each signal path, there is a response to interference in the signal path.

(spec; el / e) appropriate alarm triggering circuit provided. An alarm that is different from the alarm upon intrusion, the "main alarm", is expediently triggered. For this, e.g. the end of each signal path can be connected to a non-gate, the output of which is connected to an OR gate, the output of which is connected to a separate alarm device.

It may happen that only one or the other of these different sensors accidentally incorrectly responds. However, it is very unlikely and can be avoided by selecting and arranging the various sensors practically, all of them

Address sensors incorrectly at the same time; Only when there is a real break-in, i.e. in an emergency, do the different sensors, for example on a window or on a door or in a room, emit a signal at the same time, the AND condition is fulfilled, a signal appears on the alarm device , the alarm is triggered. Since the risk of false alarms is now eliminated by a single sensor, the sensors can be set much more sensitively than before, which increases safety and reliability. The alarm system can also be designed in any known manner. The invention can therefore be largely modified or used. An alarm system according to the invention can be provided in addition to burglar protection, for example for monitoring machines or production systems or even regulation. In addition to the permanently installed own transmission line of the alarm system, the alarm transmission via the power network and / or radio is now available. This multi-channel process is of course particularly interesting for semi-mobile systems, ie in particular a combination of signal transmission via the power grid and via radio.

With this multi-channel system, there is already an essential advantage over all previous mobile systems, namely the monitoring of the power supply!

A failure of the power grid both as an energy donor and as a message transmission system can e.g. are immediately reported to the control center by radio themselves.

By a corresponding RemanenzSchaltung (safety circuit for example as residual current circuit) aif ^'of the input side of the control panel can of the optical network to be perceived directly by the center itself of course also a failure, without that this requires confirmation by the detector itself. A possible power failure at the alarm transmitter is also reported to the control center via the power supply itself by the absence of the idle current impulses, (ie the message via radio forms (only) an increase in redundancy or alarm confirmation.) This must now be confirmed via the network , for example by sensor-induced sensor alarm or by Strcm supply failure-induced sensor alarm or by sabotage-induced power transmission alarm, (see above) etc.

In addition to the possibility of achieving a multichannel signal transmission system by expanding and combining the hardware, there is also the possibility of achieving a multichannel system by expanding the software, for example by uses several different signal transmission frequency bandwidths on the same hardware channel as 'extra channels'.

The stable housings of all units of the alarm system

(Detectors, control panels, transmitters, effector boxes are equipped with structure-borne sound detectors to prevent sabotage. Activation of these separate circuits, through which the body alarm is carried out, is delayed in order to avoid false alarms due to authorized operation (e.g. general alarm circuit, loop sharpening). Switching at the control center) Separate circles mean a special (partially) separate message transmission system (apart from operational current and radio frequencies) as normal operation.

Input side of the control panel: The input side of the control panel also has a logical AND circuit with coincidence circuit, i.e. the input side of the detector with regard to the sensors. e.g. reciprocal short-term memory. Here too, an alarm is only triggered when lateral inhibition 'simultaneously' reports an alarm signal via both channels - unless there has already been a sabotage message that has already led to the alarm.

Of course, single-channel sebccage fuses are also provided here, in addition to the mutual channel interference avoidance. Here, too, all housings should be secured by vibration detectors, which have their own alarm system and, for example in the case of the coding keyboard, are connected to it via a delay circuit. The same applies to corresponding Dcppelreed contacts at the closable housing openings.

These diverse alarm evaluation options and sabotage protection devices can be connected to each other via microprocessors with regard to evaluation and monitoring.

Effector side:

The effectors are also connected to the previous "instance" (e.g. control center) via a multi-channel connection. This multi-channel system is equipped with lateral inhibition or all or no switching.

In the case of a multi-channel system without a system-specific fixed line, the location of an alarm transmitter by a lawbreaker does not allow any conclusions to be drawn about the location of the control center, the sensors, etc.

The illustrated drawing examples are only intended to illustrate the invention, but not to limit its scope.

Show it:

Fig. 1 shows a first switching arrangement for protecting several rooms in a building,

2 shows a simplest possibility of linking channels,

Fig. 3 to 6 circuit examples with two sensors, which are each linked in a multi-channel manner via a lateral inhibition circuit,

Fig. 7 shows a circuit arrangement with AND gates arranged in parallel. 8 shows a circuit arrangement with AND gates connected in series. 9 a circuit for fault alarm.

The Fig. 1 shows a first possible switching arrangement in block circuit diagram. The sensors S1, S2, S3 are with partial detectors TM1, TM2

Pnjpl. and TM3 connected, which act on a] main detector HM1, HM2, HM3 in the event of an alarm. The main detectors are connected to a control center, which sends the alarm message (s) to one or more alarm devices, here e.g. B. pass on four GI, G2, G3, G4. The system can be put into operation or taken out of operation via an arming / disarming SUS, which is connected to the control center. According to the invention, multi-channel connections are provided between all switching units. It is z. B. to secure several rooms in a building. Here, the channel K1 can be part of an existing line system. Channel K2 - shown in dashed lines - can represent a cable network specially installed for the alarm system. Finally, channel K3 - shown here in dash-dotted lines - can mean a radio transmission path. The sensors can e.g. B. ultrasonic detectors, infrared detectors, electromagnetic field detectors working in the microwave range, field barriers, capacitive detectors, structure-borne noise avoiders, glass breakage sensors, video cameras, reed and double reed contacts. The alarm devices can be optical and acoustic devices, such as flashing signals and sirens, or telephone dialing devices.

In the representation according to Fig. 1 is e.g. B. the sensor 2 is activated and gives a command to the control panel via the partial detector TM2 and the main detector HM2, B. starts all four alarm devices G1 to G4. Partial detectors and main detectors can also be in a single unit d. H . Housing, be housed. In this case, of course, there is no need for a three-channel connection between these two links, as shown with TM3 and HM3.

The individual signal channels K1, K2 and K3 can open in the alarm fire the most varied of types interact or be linked to one another (lateral inhibition, all-or-nothing circuit, ie, for example, logical AND circuit or chain of logical AND circuits with which parallel or associated channels are coupled, shift registers, ring counters, step switches) and the like).

One of the simplest ways of linking the channels K1, K2 K3 is shown with reference to FIG. In the event of an alarm, the sensor S1 gives a signal via the channels K1, K2, K3, which are detected by a logical AND circuit and passed on to the alarm transmitter. In the simplest case, everything from the input of the AND element to the alarm transmitter can be accommodated in a switching unit SE.

FIGS. 3 to 6 show circuit examples in which at least two sensors are each connected to one another in a multi-channel manner via a lateral inhibition circuit and act on one or more alarm devices via a central unit with arming / disarming.

The individual channels of the multi-channel output path of each individual sensor are also linked to one another by a lateral inhibition circuit (Fig.) Or by an all-or-nothing circuit.

In FIG. 3, two sensors S1, S2 are connected to evaluators A1 and A2 via differential Euhstrom channels D1, D2, each of which has three channels K1, K2, K3 with a lateral one

Inhibition switch L1 are connected. From there, the signal is returned to the control center in a multi-channel manner via a further lateral inhibition circuit (Fig.!) Or all-or-nothing circuit, and from there, in turn, to the individual transmitters, e.g. Siren, flashing light and telephone dialer G1, G2, G3.

In the circuit according to FIG. 4-, the evaluators A1, A2 etc. are combined with the lateral inhibition switching element to form a unit ALI or in a housing. A multi-channel connection between evaluator and inhibition switching element is eliminated and reduced to a normal connection. In the embodiment according to FIG. 5, the sensor and evaluator are each arranged on a structural unit SA or in a housing. A multi-channel connection between the sensor and the evaluator is therefore no longer necessary.

In the circuit arrangement according to FIG. 6, the lateral inhibition circuit with the center is combined to form a unit LIZ or in a housing.

7 shows a circuit in which sensors S1 to S3 and evaluators A1 and A3 are connected via three channels K1, K2, K3 AND elements, which run together via a detector to the control center. The AND gates are therefore practically connected in parallel in the signal paths. AND elements and detectors are preferably arranged in a unit UM or a housing.

FIG. 8 shows a circuit in which four sensors S1 to S4 are connected via evaluators A1 to A4 to an alies or not circuit, here a series circuit of AND gates UR, the individual ones AND gates - here four - have been started with memories for coincidence assurance, which wait for the signals arriving from channels K1, K2, K3 in succession at short intervals to be stored (compensation of the different response times). The signal is then passed on from the UND series circuit UR to the control center and from there to the sensors. For the sake of simplicity, the lines are shown here after evaluation with simple lines. Of course they are multi-channel again, e.g. in three channels.

Fig. 9 shows a circuit for fault alarm. At the end of each signal path K1, K2, K3 there is a NOT gate, the outputs of which are connected to an OR gate. The output of the OR gate is scanned with a. Alarm transmitter for fault alarm GSϊ combined, which, in the event of a fault, there are different alarms. In the simplified circuit similar to Fig. 2 - upstream (AND gate). The arm-disarm circuit system of this alarm system is outlined in Fig. 10. For increased security, the functions are divided into units and separated, circuit blocks divided into sub-units and also separated. The signal transmission between these units also takes place via a multi-channel system. This parrying has the advantage that a lawbreaker, for example when determining a unit, cannot determine the location of the other units, as is the case with conventional, directly wired systems. This arrangement is appropriate, but is in no way necessary.

A system without egg wiring, as shown in Fig. 10, could consist of the following blocks:

The individual signal evaluator for the elements of the code, which combines the code sequence into one, is firmly connected to the control center. Arming or disarming signal for the control center is evaluated and converted. This input part of the control center is coded externally by the code setting unit. The connection between the central internal individual signal evaluator and the code setting unit is expediently set up without any external wiring.

It is also expedient to design the connection between the individual signal evaluator and the individual signal transmitter for coding without self-wiring. All transmission paths, including those without their own wiring, should of course be implemented in a redundant channel.

The single-signal encoder for coding for arming / disarming naturally has a push-button converter as input with regard to the Cocier keyboard, the direct manual switching element for arming / disarming. Circuit. Instead of coding keyboards, time locks and other switching elements can of course also be used. If possible, the coding should be digital, that is, for example, a separate frequency or characteristic pulse sequence for each code number. In particular, the radio frequencies and pulse sequences should also be digitally separated from each other. The same applies to those on the power grid. This results in a high number of possible combinations with little risk of sabotage or malfunction.

Claims

PATENIAN GIRL

Alarm, security and monitoring system with at least one sensor and at least one alarm transmitter and at least one arming / disarming, with or without intermediate elements such as alarms, control center, etc., characterized in that each signal connection between these functional groups consists of at least two mutually independent signal paths (transmission channels ) consists.

Alarm, security and monitoring system with a multi-channel signal transmission system according to claim 1, characterized in that associated channels, data and signal transmission paths are interconnected by a logical AND circuit.

Alarm, security and monitoring system with multi-channel system according to claim 1, characterized in that these channels interact according to lateral inhibition.

Alarm, security and monitoring system with multi-channel system and lateral inhibition according to claim 1, characterized in that the lateral inhibition is achieved by a logic AND circuit or a chain of logic AND circuits, with which in each case parallel or associated channels are coupled .

Alarm, security and monitoring system with a multi-channel system according to claim 1 and the following, characterized in that the chain of logic AND circuits is replaced by corresponding surrogates, such as shift registers, ring counters, step switches, etc. Alarm, security and monitoring system with a multi-channel system and interaction according to lateral inhibition, according to claim 1 and according to the following, characterized in that the lateral inhibition is built up by mutual adjustment devices of filters and gates.

Alarm, security and monitoring systems with a multi-channel system and lateral inhibition by filters and gates according to claim 1 and the following, characterized in that the lateral inhibition or filter or gate setting reacts to the absence of a signal or a corresponding modulation of the marriage activity .

Alarm, security and monitoring systems with multi-channel signal transmission system according to claim 1, characterized in that these channels monitor each other.

Alarm, security and monitoring systems with multi-channel system according to claim 1 and 2, characterized in that the different channels are coupled by an all-or-power circuit.

Alarm, security and monitoring systems with a multi-channel system according to claims 1 and 2, characterized in that the lateral inhibition is represented by an all-or-nothing circuit.

Alarm, security and monitoring systems with a multi-channel system according to claim 1, 2, 4a, characterized in that the all or nothing circuit is constructed by a logical AND circuit or by a chain of AND circuits.

Alarm, security and monitoring systems with a multi-channel system according to Claims 1 and the following, characterized in that the chain of logic AND circuits is replaced by corresponding surrogates, such as step switching mechanisms, shift registers, king counters etc. Alarm system with multi-channel transmission system according to claim 4, characterized in that the logic AND circuit in the case of a quiescent current version or differential current version or in particular between the sensor and detector is formed by an electrical parallel connection. (With differential current with differential compensator and differential comparator)

Alarm system with at least one sensor, characterized in that at the end of each signal path a circuit which responds to faults in the same signal path and triggers an alarm is provided.

Alarm, security and monitoring system with at least one alarm transmitter and a signal connection between alarm detector and alarm transmitter, with or without an intermediate stage, such as a control center, etc., characterized in that at or in the monitored object (fastened in an Eaum) at least two different ones, but with every alarm event (in particular break-in) physical sensors responding to inevitable physical phenomena are provided, which detect the same monitoring zone, which are connected via an AND link or a chain of AND links or their surrogates such as shift registers, step switches, ring counters, etc. are, the resulting output is connected to the alarm transmitter with or without intermediate elements.

Alarm, signal and monitoring systems according to claim 1 and according to claim 15, characterized in that the sensors are connected to one another via a lateral inhibition. Alarm, security and monitoring systems according to claim 16, characterized in that the lateral inhibition is produced by a logical AND circuit, or by a chain of AND circuits or their surrogates, such as shift registers, ring counters, step switches, etc.

Alarm security and monitoring system according to claim 1 and according to claim 15, characterized in that the sensors are connected to one another via an all-or-nothing circuit.

Alarm, security and monitoring system, according to claim 18, characterized in that the all-or-shift circuit by a logical AND circuit or a chain of AND circuits or their surrogates, such as shift registers, step switches, ring counters, etc. is executed.

Alarm system with multi-channel transmission system according to claim 3, characterized in that each individual channel can report faults to any other channel by a special device.

Alarm systems according to claim 1 and the following, characterized in that the channel self-monitoring according to claim 4, mutual external channel monitoring according to claim 5 interact according to the principle of lateral inhibition.

Alarm systems according to claim 1 and the following, characterized in that at the end of each signal path a non-gate is connected, the output of which is connected to an OR gate, the output of which is connected to a separate alarm transmitter. Alarm system according to claim 1 and correspondingly characterized in that a coincidence protection circuit is provided at each channel end or at each lateral inhibition element, or elements of the all or nothing circuit, for example the AND element, which detects the different response times of combined sensors different transition times from different channels and the different processing times of the pertinent links so that they do not endanger the coincidence.

Alarm, security and monitoring systems with a multi-channel system according to claim 1 and corresponding following, as well as channel couplings according to claim 2

4, 9 and the corresponding following, and with coincidence protection according to claim 23, characterized in that the coincidence protection is constructed by short-term storage.

Alarm, security and monitoring systems with a multi-channel system according to claim 24, characterized in that the coincidence security was created by a delay element.

Alarm, security and monitoring systems with a multi-channel system, characterized in that the coincidence protection by electricity or. Resonant circuits is established.

Alarm systems (with multi-channel system in partially mobile version), characterized in that it is provided with the multi-channel system in a logical AND circuit and coincidence protection circuit.

Alarm system (as multichannel data transmission system), characterized in that the multichannel system consists of devices for utilizing several different signal transmission frequency bandwidths or different pulse sequences on the same medium. Alarm system with multi-channel system, characterized in that continuous radio is used on the radio paths as a monitored booing activity, the coded-modulated fault message triggering the alarm.

O. Alarm system with multi-channel system according to claim 1 and correspondingly characterized in that the signal transmission takes place over the adjacent line network and over the Stromleituήgsnetz and via radio.

Alarm system with multi-channel system according to claim 1 and the following for mobile use of the individual elements, characterized in that the signal and alarm transmission take place simultaneously via the power network and by radio.

Alarm system with a multi-channel system according to claim 1 and correspondingly characterized in that the signal transmission takes place simultaneously via the system's own network and via the power network.

Alarm system with multi-channel system according to claim 1 and correspondingly characterized in that the alarm and signal transmission takes place simultaneously via the system's network and by radio.

Alarm system with a multi-channel system according to claim 1 and correspondingly characterized in that this idle activity system with regard to the transmission of messages via the power supply network via a so-called safety circuit, i.e. Residual current switching or retentive switching takes place.

Alarm system with a multi-channel system according to claim 1 and the following, using the power supply network, characterized in that the general power network is also connected to the alarm system or automatic message transmission system with regard to the energy supply; This means that power failures in each individual unit of the entire system trigger a general or special alarm that "differs" from the main alarm. Alarm system with multi-channel transmission system according to claim 1 and the following, characterized in that there is the possibility of partially mobile use while avoiding a system-specific line network. (eg using the power network and radio transmission).

Alarm system with multi-channel system according to claim 1 and the following with radio, characterized in that the other channel takes over a monitoring function for the other channel.

Alarm system with multi-channel system according to claim 1 and the following with radio, characterized in that a radio interference triggers an alarm.

Alarm system with multi-channel system according to claim 1 and the following, characterized in that their operation blocks are specially secured against sabotage (e.g. by structure-borne sound detectors with a delay circuit).

Alarm system with multi-channel system according to claim 1 and the following, characterized in that the arming / arming or on / off is also carried out via this multi-channel system.

Alarm system with a multi-channel system according to claim 1 and correspondingly following without a system-specific connection line also for on / off, characterized in that the absence of the system's own connection paths means that the control center cannot be located by determining the on / off switch.

Alarm system with a multi-channel system according to claim 1 and the following, without the system's own fixed connection paths, characterized in that the coding with respect to the control center is also carried out by an external unit which has no direct connection path to the control center. Alarm system with a multi-channel system according to claim 1 and the following, characterized in that an affinity increases or reduces the logic AND circuit, which is equivalent to an adaptation learning process.

Alarm, security and monitoring system with multi-channel signal transmission system according to claim 1, characterized in that related channels, data and signal transmission paths are linked by mutual adjustment devices of filters and gates.