HU189072B - Process and inspecting net for centralized availability and safety inspection objects, e.g. dwelling houses - Google Patents

Abstract

The invention improves the operational conditions and cost-effectiveness of the object monitoring networks by simplifying the process and developing an appropriate structure. Similarly to the state of the art, the output signals of the status indicators arranged in the objects are combined into cyclic sequential response signals in the terminals, the response signals are classified in the central processing unit of the central station, and the error signals are displayed, registered and further processed. According to the invention, in the case of signal traffic in the infrared frequency band and in the frequency band not exceeding 5 kHz, the output signals output in error-free operation are combined in sequence and the location and type of fault (s) are determined from the phase position of the missing signal (s) in the qualification. . The monitoring network according to the invention has a fault-sensitive error detector (12) in the response signal sequence and a display device (14) attached to the output of the error detector (12). having elementary display organs arranged in accordance with the sequence and coupled with a signal output of the appropriate ranking device (24). -1-

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention centralized monitoring of N status (N natural integer) sensors sensitive to different condition characteristics of residential buildings for abnormal conditions - via other available cable networks, eg. by remote signaling on a cable television network and, if desired, by the transmission of additional signals (acknowledgment, intervention, etc.) due to the condition (s) being transmitted.

The invention has been developed for the operation of residential buildings and other groups of buildings to perform their functions under central guardianship, and will be described hereinafter in connection with this application. From the description, one skilled in the art will appreciate that the invention may advantageously be applied to the monitoring of other objects by combining the state signals of the objects with state indicators in the monitoring, combining the outputs of the state devices with cyclical responses in the end object line response.

Proper use of housing estates and other groups of buildings requires that abnormal states that prevent the operation of devices serving the current object do not occur and. abnormal conditions independent of devices in the area of the object shall not interfere with its intended use and shall not endanger the integrity of the object, in particular, the people using or in the vicinity of the object. It is especially dangerous, for example. elevator malfunctions (eg intermolecular blockage), fire, gas leakage, ventilation system failure; serious damage can be caused by lifts, especially heating system inoperability, burglary, damage etc. Status detectors for detecting such events are usually placed in objects whose error messages are transmitted to a central monitoring station after signal processing as required. Of course, the reception and processing of different state characteristics will vary depending on the type of error detected; in some cases, display or registration is sufficient at the moment of reception, in other cases immediate intervention is required and accordingly, no acknowledgment of some status signals is required, in other cases not only acknowledgment feedback but also, or instead, additional signal processing device (s). It should also be forwarded to the Commission, which, where appropriate, will also trigger the issue of intervention signals.

The scope and organization of such surveillance systems can be varied; including the need to monitor a large number of N status indicators via a remote signaling network and to transmit the error signals in such a way that a clear identification of the fault location and type of error can be made. It is also common that an extensive transmission network is needed and, in order to avoid separate deployment of such a network, cable networks which are already available for other purposes are often used for remote signaling2; to this end, the surveillance system shall be designed so that these remote signals do not interfere with the intended use of the cable network for its intended purpose, while at the same time operating conditions resulting from its intended use shall not interfere with the object surveillance signaling system.

Recently, various solutions have been developed for this purpose worldwide, relying on cable television networks; such systems can also be applied to other cable networks.

Such a known solution is described e.g. Communication News, Vol. 15 (1978), Volume 4 (p. 16), Funkschau Volume 51 (1979), Volume 1 (p. 1114). Handelsblatt, August 152, 1982, p. 152 (p. 11) describes a solution for the computerized provision of lift control. Some of the methods are reviewed in the Technical Development Information Bulletin issued by the Budapest City Council's VB Property Management and Construction Directorate in 1983. Already in Hungary implemented a large community! object monitoring based on a cable television network operating with an antenna (such as the "VÍTECH" system of the Győri Villamostechnika Industrial Cooperative, which was put into operation in 1983).

Aside from the detailed discussion of such prior art systems, for convenience, we briefly summarize some of the required features and some drawbacks of the preferred types.

Extensive monitoring of such an object system can be achieved by remotely signaling outputs of a total of N status sensors that are sensitive to various abnormal states by secondary utilization of a low-current cable network by requesting cyclical interrogators to receive state signals arriving at the terminals The current output states of the status signaling device combines its current output states in a sequential order, sequentially, and qualifies them by decoding the response signal and displays, registers, and / or transmits them to other signal processing device (s). The monitoring station central terminals and terminals are provided with means for adapting the interrogation signals and the response signals to the transmission line (collectively, this set of devices may be called a line unit) and the signal processing means for compiling the response signals from they also determine the query rate and sequence design (in summary, this toolkit is also ncvczhelji for the signal processing unit).

Some disadvantages of such solutions are known: the capacity of the transmission frequency band is limited; the transmission is not adequately protected against radio frequency interference, which may cause false alarms; the range of services is incomplete. There is no way to establish a voice connection between the central station on the one hand and the individual terminals on the other hand, in addition to transmitting traffic signals. THE

From the 189,072 system characteristics, end-to-end functionality checks are relatively infrequent, ie. per hour, experience has shown its inadequacy. an end station failure occurs within the first thirty minutes of the last inspection, any fire that may occur will remain so that for more than thirty minutes the monitoring center is unaware that this terminal is failing to fire. In the known solution, relocation of the central station to another object is cumbersome and requires the assistance of a specialist.

Cross-modulation interruptions have been reported in known surveillance systems superimposed on a cable television network; keeping the disturbance level below the required threshold sets very sensitive requirements for system design, setup, and maintenance. At the same time, the construction costs are relatively high, which means a high specific investment burden, especially for smaller objects.

The present invention is based on the recognition that, while retaining the required characteristics of known systems, the complexity, cost, and interference sensitivity of the system can be greatly reduced if the signaling device is provided with a uniform value (voltage, price, forwarding a set of representative output signals to the central station, which are sensed in normal operating condition at the time of the query, decoding which output signals of the ordering status devices do not contain the encoded response signal and hence the location and type of the error signal. which are displayed, registered and / or transmitted to further signal processing device (s).

Combining the output signals of each of the status indicators into a fixed order response signal in such a representation allows for a great variety of rating. During decoding, it is easy to determine which order status indicator (s) did not receive an elementary response signal (indicating that this particular device has not detected a malfunction-free state). Ultimately, in such an arrangement, the order itself makes it clear which signaling device is involved, and the location and type of error can be determined even with fully uniform response signals. However, it is also possible to incorporate a different uniform elemental state signal into the sequentially merged response signal for each type of state characteristic, in which case the display variations (and further processing) may utilize variables independent of the sequential order and serve other information. The above general characteristics also allow us to extend the range of services in a versatile manner without increasing the sensitivity to interference, the specificity of the complexity or the expense required.

so e.g. maintaining a voice channel for bidirectional traffic within the voice band for voice communication between the central station and any end station, whereby, depending on the requirements of the place of use, the telephone traffic may be equally or partially prioritized. The central station of the present invention can be configured to be readily deployable so that it can be operated on an arbitrary object of the supervised objects and moved from one object to another as needed. More than one central station may be used in the system, each of which, by dividing the set of objects into appropriate parts, will oversee the appropriate portion of the status indicators, or by connecting at least two central stations to each of the managed objects over the cable network. when applied, monitoring is performed at any one of these central stations, either on a scheduled basis or alternately depending on the operating event.

The invention will be explained in more detail by means of figures. Fig. 1 is a block diagram of an exemplary embodiment of the surveillance network, Figures 2 and 3 are representative, exemplary, waveforms during traffic.

The surveillance network of the present invention can be configured in many ways, with features required in any embodiment that line units are capable of transmitting in the infrared or audio frequency bands up to 5 kHz. The central unit stores a gate detector 12 which is sensitive to a defect in the response sequence, the N outputs of which are connected in series to the respective inputs of a display device 14 formed by N elementary display means and directly or indirectly to the outputs of the are connected to the appropriate input of a serial codec output signal control circuit 24. The signal management circuit has a transducer stage, one of two inputs with N-input and N-outputs, one of the two inputs having a particular input status, and an N-input serial coding stage having inputs with corresponding outputs of the encoder stage. indirectly connected to the line unit. Preferably, the line units are provided with interfaces for connecting voice telephones to telephone sets over a cable network. The network may be provided with two or more central stations and an interrogating circuit which provides the trigger signal or is connected to one of the central is connected via cable line to the cable network independently of the central stations.

In the exemplary embodiment shown in Figure 1, each of the stations comprises a summing circuit 3, 27 coupled to the cable network and an integrating circuit 4, 15.

-3185 072 circuits. One of the inputs of the summing circuit 3, 27 is used to connect the telephone device 2, 26, and the integrating circuits 4, 15 are connected to a signal generating circuit 5, 16. Both the central station and the end station include a beacon 6, 17, the output of which is connected to the inputs of a stage counter 7, 19 and a beacon 9, 20, and a signal separator 8, 18 to each of which inputs are signal generating circuits 5,16 and the output of the stage counter 7, 19 is connected, while the output of the signal separator 8, 18 is connected to the further input of the sequence transmitter 9, 20 and the output of the sequence transmitter 9, 20 to the signal input of the counters 10, 21 and the output of the counters 10, 21. connected to the signal input of the circuit.

In the central station (s), the jforming circuit 5 is also connected to the jc input of the fault detector 12, a further stage 13 is connected to the further input of the fault detector 12, its signal input to the decoder circuit 11 and its input 14 to the parallel output. the further output of the decoder circuit 11 is connected to the input of the starter encoder 1 and the output of the starter transmitter 1 is connected to the further input of the summing circuit 3.

At the end station, the output of the decoder stage 22 is connected to the signal input of a signaling circuit 24 which directly or indirectly connects to the parallel input of the signaling circuit 24, while the code output of the signaling circuit 24 - preferably through additional signal generating stages 25 is connected to its other input.

The central station starts the control cycles with start pulses. This control pulse also ensures the initial synchronization of the terminals with each other and the central station. Quartz oscillators provide synchrony within the cycle. The object conditioners 23 send response signals to the central unit based on a coordinated time-sharing program of the terminals until the normal and abnormal event they observe (e.g., the elevator is not blocked). If a status device 23 detects a malfunction, then no response signal is received from the signal processing unit and the element signal is missing from the response signal transmitted to the central station in the sequence phase reserved for this status device 23. If an endpoint is malfunctioning, all of the status sensors 23 connected to that endpoint will lose their elemental state signal. The central station acknowledges the incoming response signals in accordance with the time division program, determines the source of the error indication from the sequential order when some elemental response signals are omitted, and operates an appropriate display in the display means 14.

The starter transmitter 1 of the central station senses the end of the control cycle based on the signal of the decoder circuit 1 and then generates a start pulse of the starter transmitter 1. The start pulse and the signal from the telephone 2,26 that may be operating during transmission are interconnected by the combining circuit 3 and fed through a filter to the telecommunication cable network.

The start pulse is processed by both the central station and the end stations for the same signal management for synchronization. The start pulse therefore passes from the supply point to the integrating circuit 4, which is also controlled by the response pulses from the terminals via the TV cable network. The function of the integrating circuit 4 is to purge the impulses flowing in the malfunction signaling system from interference signals (high frequency broadcast signals, power disturbances, dispatcher telephone tone signal, etc.). The circuit 5 which generates the start pulses and the response pulses is preferably a Schnitt trigger. The response signal, in this exemplary embodiment, is a pulse sequence of 200 ms duration, with a start pulse width of I s. The start pulse is isolated by the signal separation stage, which is controlled by the 7 stages of the stroke counter. The beacon 6 delivers 1 MHz beats, and the step 8 separates the beacon until it inspects a pulse width greater than 7.5 x ^{10 5} beats. Only the start pulse meets this requirement. The stroke counter is a 7 step binary divider.

The sequence transmitter stage 9 counts the stroke signals of the superconductor 6 and generates a 250 ms long gate signal for blurring the signals of the status devices 23. The 250 msec sequence signal is applied to the binary 10, the output state of the 10 being processed by a binary decoder circuit 11. Each output state of the decoder circuit 11 is unambiguously assigned to a specific status indicator device 23. The sequence transmitter 9 and the numerical chain 10 reset the trailing edge of the start pulse selected by the splitter 8 as a wipe signal, thus initiating the 9th and 10th series in the same phase and state. The output signals of the decoder circuit 11 together with the total response signal (pulse sequence) from the signal generating circuit 5 control the fault detector 12, the output signals of which control the display device 14. Thus, if there is no abnormal state in the objects, each response signal includes signals from all status devices 23, so that error detector 12 cannot output an output signal, display device 14 does not signal an error. If in any sequence of the response signal the decoder circuit 11 does not detect an elementary response signal, the storage location of the circuit 11 will tip over and activate the display device 14 in the appropriate sequence, its position on the display panel itself making it clear which status device 23 knowing the nature of these 23 devices, we also know what error it represents in which object. If the error is corrected, the level 13 of the reverberant will automatically clear the error indication.

A preferred embodiment of the display device 14 maps a conceptual map of the area under its control, with the elemental display devices associated with the status indicators 23 arranged in the object, preferably light emitting semiconductor diodes (LEDs). Different color LEDs can be assigned to the 23 devices for detecting different fault types, e.g. red LED

-4189 072 indicates a misfire signal from the elevator shaft of the object. In the case of such an alarm, in the embodiment shown, the central station verbally acknowledges via the telephone 2 and also gives a light signal. Because the speech channel is designed for bidirectional traffic, it not only provides acknowledgment but also error signals that are not provided automatically by the device 23 located in the object. so e.g. call a doctor. The central station connects to the communication cable network through a low pass filter so that it does not interfere with higher frequency transmission. If several central stations are connected to the same cable network, only one central station may be provided with a start signal (or be deployed at only one central station). If, for any legal or organizational reason, the issue of polling signals cannot be entrusted to one of the central stations, a single line unit may be connected to the cable network by a common polling complex containing all the building blocks required for timer generation, i.e., the encoder 1 , a signal generating circuit 5, a beacon 6, a step counter 7, a signal selector 8, a sequence 9, a 10, and a decoder 11. If multiple central stations are used, the code assignment of the substations must be negotiated so that no more than one identical code occurs.

At the terminals, the starting pulse, sequence assignment, counting, and decoding are performed in the same manner with building blocks identical to the central station. A completely identical mode of operation is a necessary condition for the synchronized operation of the terminals and the central station, because only then does the sequence of an elementary signal become clear. Thus, at the terminals and at the central station, the same decimal outputs of the decoder circuits 11, 22 are assigned to the same status signaling device 23. The function of the signal management circuit 24 is to group the devices 23, and thus the outputs of the decoder circuit 22, according to the program. The 250 ms pulses of the decoder circuit 22 can only be output to the output of the signal processing circuit 24 if the assigned device 23 receives an error signal, i.e., the output state required to output an elementary response signal. The function of the further signal forming circuit 25 is to reduce the pulse duration to 200 ms to provide a guard band, while increasing the rise and fall time to 20 ms to reduce transient phenomena. The pulses thus formed are transmitted to the cable network with the transmitting signals of the telephone 26 in the summing circuit 27.

Figure 2 illustrates a response detail representing a completely error-free state of each monitored object. A total of N status indicators 23 are arranged in the various objects, the first object in the first order in the 1st, ..., 3th order, the second object in the order 4 ...... 7th order, the highest in the last object in the order : (N-3), ..., N order 23 devices.

The four highest-order elemental signals of the previous cycle response signal and the seven lowest-order elemental signals of the current cycle are displayed, as well as the start pulse S to start the cycle; and the unformatted shape of the elementary response pulses and the signal width enforced on the further signal forming circuits.

Figure 3 shows how the 1 MHz clock signals of the 6 beacons generate e.g. 4, ..7 assigned to the status indicators 23 arranged in a second object in a sequence. sequence of elementary signs. Signal shapes per line:

a) a bar symbol (the bar 17 is given by the bar counter to 19);

b) a sequence signal (produced by 20 degrees as a binary divisor);

c) -g) account chain states in the sequence order;

h) - k) elementary response signals in phases 4, ..., 7, respectively.

The decimal outputs of the decoder circuit 22 are shown in Figs. phases display elemental response signals indicating that no abnormal state has been detected in the second object, and this information will be included in the next response signal to be summed in the signal management circuit 24,

Λ the embodiment described above is exemplary; the surveillance network can be completely different in terms of sub-features while retaining the essential required features.

Claims (9)

Claims i. Procedure objects, e.g. centralized monitoring of a total of N (N natural integer) status indicators sensitive to the various condition characteristics of residential buildings - for other purposes through a wired network, e.g. to transmit additional signals (acknowledgment, intervention, etc.) by means of telecommuting on the cable television network and, if desired, from telegraphic abnormal condition (s), during which a condition indicator arranged in each object is cyclically queried response terminals sequentially combining a set of elementary data signals are qualified in a signal processing unit and then displayed, registered, and / or transmitted to further signal processing device (s), characterized by a non-inhalable frequency or 5 kHz in the case of signaling in the frequency band, the output of uniform signaling (representing the nominal value of voltage, current or impedance) of the signaling devices - sorrendhc'yesc n decodably merged - forwarding its set to the central station, which, at the time of the query, is in normal operating state 189 C72, decoding determines which output signals of the status devices are not included in the encoded response signal and generates error signals representing the location and type of error, which are displayed, registered, and / or transmitted to further signal processing device (s). A method according to claim 1, characterized in that an IC speech channel for bidirectional traffic within the voice band is maintained for voice communication between the central station and any end station, and is, according to the requirements of the application, equally or partially prioritized. we also provide telephone traffic between the various terminals and the central station as needed. Method according to claim 1 or 2, characterized in that it uses a relocatable central station, which is operated in ²⁰ objects of arbitrary choice among the monitored objects and, if necessary, moved from one object to another. 4. A method according to any one of the preceding claims, characterized in that more than one central station, properly installed or movably deployed, is used, each of which is interconnected with a specific portion of the monitored objects over the cable network. 3 ₀ 5. The method as set forth in claim 4, characterized in that at least two central stations are connected through the cable network, the monitored objects all of, and the application of known methods for redundancy Whichever the monitoring ₃₅ of the central stations in each case by one - according to a scheduled or event alternately - control it. 6. Surveillance network objects, eg. terminals for centralized monitoring of 40 state (N natural integer) signaling devices sensitive to different condition indicators of residential buildings, terminals connected to line and signal processing units also connected to line and signal processing units arranged in each object, available for other purposes, eg. connected to a cable network for broadcasting a television program, the network being provided with means ⁵³ for cyclically polling the terminals, each terminals being provided with means for combining in a cyclically prescribed sequence the output signals of the status signaling devices connected to the terminal, units are configured for traffic in the infrared frequency band and in the audio bandwidth not exceeding 5 kHz, the central unit includes a response detector (12) sensitive to a lack of response signal, the N outputs of which are connected to a display device (14) and, directly or indirectly, outputs of the status indicators (23) connected thereto at each end terminal - signal input circuit with N-input and serial code output (24) are connected to their respective inputs and the signal management circuit (24) has an encoder stage and an N-input serial code encoder stage having output signals in one of two input states, N-input and N-output, input is connected to the corresponding outputs of the encoder stage, its code output is connected directly or indirectly to the line unit. Monitoring network according to Claim 6, characterized in that the line units are provided with interface devices adapted for the voice-frequency connection of telephone sets (2, 26) over a cable network. Monitoring network according to claim 6 or 7, characterized in that it comprises two or more central stations and the cyclic polling device is connected to one of the central stations or is connected to the cable network independently of the central stations via an additional line unit. 9. A 6-8. A monitoring network according to any one of claims 1 to 5, characterized in that each station comprises a cable-connected summing circuit (3, 27) and an integrating circuit (4, 15) and a telephone device (2, 26) connected to one of the inputs of the summing circuit (3, 27), a signal forming circuit (5, 16) coupled to the integrating circuit (4, 15), a beacon transmitter (6, 17) having an output connected to the inputs of a bout counter stage (7,19) and a beacon stage stage (9, 20); , 18) having an input connected to the output of the signal generating circuit (5, 16) and the clock counting stage (7, 19), and the output of the signal selection stage (8, 18) to the further input of the sequencing stage (9, 20). connected and the output of the sequence encoder stage (9, 20) connected to a signal input of a counter circuit (10, 21) and an output of the counter circuit (10, 21) connected to a signal input of a decoder circuit (11, 22); in the central station (s), the signal generating circuit (5) is also connected to one of the signal inputs of the fault detector (12), the resistor stage (13) is connected to the other signal input of the fault detector (12), the signal output of the decoder circuit (11) connected to the parallel output of the display device (14), the further output of the decoder circuit (11) is connected to the input of the starter transmitter (1) and the starter transmitter (1) is connected to the other input of the summing circuit (3); at the terminals, the output of the decoder circuit (22) is connected to a parallel input of a signal management circuit (24) connected to a parallel input of the signal management circuit (24) and having a code output, preferably further signal circuitry (25). connected to one of the inputs of the circuit (27).