DE102010016392B4 - Interface for connecting a reporting and testing device of a security lighting system to a building management system, in particular in a building, and associated method - Google Patents

Abstract

Interface (1, 1 ', 1' ') between a first building management system and an emergency lighting system (52) via the data of the emergency lighting system the building management system are provided, characterized in that the interface (1, 1', 1 '') a Protocol and level matching circuit (7, 7 ') converting serial bus data (33, 33', 33 '', 33 '' ') into a protocol used in the building management system for data communication; and the interface (1, 1 ', 1' ') comprises a memory (3, 3') for data in which data of the emergency lighting system (52) are read, which are read by the building management system, the circuit (7, 7 ') ) for protocol and level adjustment depending on the building management system interchangeable and so adaptable to a second building management system.

Description

The present invention relates to the connection of a reporting and testing device of a security lighting system to a building management system, in particular in a building, an interface according to the preamble of claim 1 and a method for adapting an interface for communication between an emergency lighting system and a building management system are treated.

Safety lighting systems are described and defined by numerous standards and guidelines, which have their specific characteristics and their individual configurations from field to field and from country to country. In this context, widely observed standards are the EN 50171, the DIN 43534 and the DIN VDE 0510, which are often supplemented by associations of occupational associations by accident prevention regulations.

Buildings and structures, in particular buildings and structures of a public character and public buildings, such as hotels, cruise ships, convention centers, function rooms, stadiums, museums and theaters, as well as larger administrative buildings, eg. As courts are equipped with emergency lighting systems, so that in an emergency, such as a fire, people can be evacuated from the danger area, in particular, it is required that during the evacuation escape routes are sufficiently illuminated.

State of the art

How control technology using the general energy supply lines for the emergency light a supply can be ensured in case of interrupted general supply, if the individual lights are not individually supplied, so are not equipped with individual batteries, can be exemplified the DE 10 2007 062 999 B3 (Patent owner: RP-Technik e.K .; filing date: 21.12.2007), the DE 10 2007 062 957 A1 (Applicant: RP-Technik e.K .; filing date: 21.12.2007) and the AT 506 780 A1 (Applicant: RP-Technik e.K., filing date: 19.12.2008), which in turn list other references. The respective safety or escape route luminaire can be operated in one embodiment as a single battery lamp. In the more advantageous installation variants, use is made of one of the previously mentioned control and energy supply methods. The methods known from the patent literature are often also summarized under the keyword "mixed operation technology" or "mixed operation process".

In this case, individual parts of the emergency lighting system are often equipped with one or more microcontrollers. A long-time favorite microcontroller is a microcontroller, which can be attributed to the family MCS-51. Of course, even more powerful microcontrollers as well as microprocessors can be used as the control core of the emergency lighting system. The building management technology often includes a similar microcontroller or microprocessor.

The EP 2 081 415 B1 (Patent owner: RP-Technik e.K., Date of filing: 09.01.2008) addresses the problem of providing a graphical representation of the emergency lighting system with common software tools and proposes a method by which common HTML display tools such as Internet browsers are used can be. With the teachings described there, the artificially created proprietary boundaries between the different control and monitoring systems and softwares of different manufacturers become more permeable. From any computer that has Internet browser software, one can EP 2 081 415 B1 equipped emergency lighting system can be made visible, maintainable and monitorable.

Reference is made to the aforementioned references for a general overview of common terms, terminologies and types of circuit of emergency lighting systems. The scope of disclosure of the aforementioned references is incorporated in the present specification in full in place of a detailed description of each common term of emergency lighting technology.

In fact, many manufacturers of emergency lighting systems as well as building management systems propagate their proprietary communication protocols, making it more difficult to avoid components from other manufacturers.

Exemplary is the DE 196 11 161 A1 (Applicant: AEG EWS Power Supplies Sörnewitz GmbH, filing date: 21.03.1996), who wants to establish a Local Operating Network (LON) between the individual luminaires and other nodes of the emergency lighting system. For this purpose, each node, that means each luminaire, is equipped with a neuron chip. A central server is used as a control computer or as a central computer. Instead of a microcontroller is in the document DE 196 11 161 A1 suggested to use a PC. The accompanying protocol is a LONTalks protocol.

The US 2009/149 973 A1 (Applicant: TLC Integration LLC, filing date: 28.01.2008) wants to use a BACnet as a communication protocol, to which a communication controller has to be connected, so that communication with a server can be established via a LAN. The publication US 2009/149 973 A1 is a good example of what many manufacturers want to implement, namely proprietary communication methods in which US 2009/149 973 A1 a system according to Johnson Control.

The catalog CPS 220 SV of INOTEC Sicherheitstechnik GmbH also shows that this company relies on proprietary standards.

The planning manual for emergency lighting under the title "Willing Lichtnavigation" by Dr. Ing. Ing. Willing GmbH important and interesting aspects of emergency lighting systems.

Another emergency lighting system is in the EP 1 513 376 A1 (Applicant: CEAG Notlichtsysteme GmbH; filing date: 04.09.2003) in which the individual data buses are routed via a switch to a microcontroller.

Data transmission systems, eg. B. via a CAN bus or to the bus system KNX, are in the publications EP 1 099 153 B1 (Patentee: Infineon Technologies AG, priority date: 28.07.1998) and DE 10 2006 053 357 A1 (Applicant: Siemens AG, filing date: 10.11.2006).

In the utility model DE 297 06 464 U1 (Owner: Insta Elektro GmbH & Co KG, filing date: 11.04.1997) devices for controlling the brightness of luminaires are described, which are to be coupled via an exchangeable bus circuit board on an application interface to different bus systems. The bus board should z. B. can supply different power levels of electronic transformers. A microcontroller on the bus board is used for formatting status data.

The document DE 10 2006 049 636 A1 (Applicant: Siemens AG, filing date: 20.10.2006) concerns a bus coupler and a communication system. The bus coupler should have a first interface via which it can be connected to a communication system formed from first field devices, a so-called field bus. A second interface is used to connect to a power supply network for second field devices, wherein a connection of the interfaces via a converter by means of modulator and demodulator should be made. An image of the network formed by second field devices via the power supply line can be present in a memory. An evaluation of state data and a check with regard to a stored nominal state by means of a control of the bus coupler are provided. Apart from the communication between the first and second field devices, no further data exchange is mentioned. Field devices are sensors, actuators and drives.

A network topology and associated control system for an energy efficient lighting system is the subject of the patent application US 2003/0 222 603 A1 (Applicant: SYSTEL DEVELOPMEND & INDUSTRIES LTD, filing date: 02.06.2003), whereby communication takes place network-internally via power supply lines. The method described in the document serves to avoid command collisions. The network should have various nodes that are hierarchically referred to as Central, Branch and Local Remote Control Units. The central remote control unit, which provides the greatest computing power in the system, is believed to be a computer. This is to be connected via an output with a so-called, unspecified BMS bus to a building management system and via a serial communication bus with the downstream remote control units. Inquiries from the building management system via the BMS bus must be processed in a time-consuming manner by the central remote control unit.

For building management systems in Germany, protocols are used that work according to the modBus system specified by the Modbus Organization or according to the SIM-KNX protocol specified in EN 50090 and ISO / IEC 14543-3. In addition, there are numerous other bus protocols, such as the OpenCAN bus and the EMS protocol are named.

task

A manufacturer of components for emergency lighting systems that can be installed in public buildings is either required to adhere to a communication standard and thus exclude others if the emergency lighting system is to be integrated into a building management system in terms of control technology or monitoring, or alternatively it can choose the way Numerous different interface devices vorzuhalten so as to integrate the emergency lighting system in various building management systems. Both ways are undesirable. If the manufacturer of emergency lighting systems joins a communications consortium, he has To perform committee work, which keeps him from the actual activity - emergency lighting systems - to develop. If it fulfills the wishes of customers to develop interface devices for different bus systems, there is a danger of constantly developing new interface devices that may only be used a few times.

It would therefore be desirable if a communicative connection, in particular for the exchange of data from monitoring, state and control data, the emergency lighting system to the system of building management is possible without the manufacturer of the emergency lighting system must know the full bus protocol in the system of building management.

A further complicating factor is that emergency lighting systems are regarded as safety-critical systems that must not fail due to errors in the data communication. In the event of a fault, the emergency lighting system should be in a safe functional state, so that users of the building in which the emergency lighting system is installed can safely get to safety.

The manufacturer of emergency lighting systems is responsible for ensuring that its components and the system constructed with these components are free of defects and that it is to be verifiable by third parties such as independent technical inspection associations. If disturbances in the communication occur during the acceptance of the electrical system, technical monitoring associations refuse the release of the system and thus the release of the building for the public company.

Not all specifications are available to the manufacturer of the emergency lighting system for some proprietary communication protocols, but he should nevertheless guarantee the freedom from errors in the communication. In addition, not even the electrical installation operation, which builds the emergency lighting system in a building, the entire system of building management is often known. Some systems of the building control system take care of the air conditioning of the building as well as the access control in individual restrictive areas. The integration of the emergency lighting system is of secondary importance for many trade-related craft businesses, but at the same time they also want to be able to access the building management system.

It must be ensured operational safety of the system. Often, the emergency lighting system should be embeddable in the system of building management.

invention description

The object of the invention is achieved by an interface according to claim 1. Such an interface can be installed in a building according to claim 11. A suitable method for adapting an interface is described in claim 10. Advantageous developments can be found in the dependent claims.

To achieve the object of the invention contributes that an interface is created that can connect between a building management system and an emergency lighting system. The interface is an electronic or electrical unit to which the building management system and parts of the emergency lighting system can be connected. Ideally, it is a self-contained module that can be placed as a unit between the different sections of a building's electrical system. The interface should therefore be a device that can be integrated into the control system of a building. The data of the emergency lighting system is made available to the building management system via the interface. The interface is responsible for the exchange of information between the two subsystems, the emergency lighting system and the building management system.

For the promotion of the data exchange, the interface comprises a memory. In other words, the interface is equipped with a memory. Such a memory may be a RAM module or an EEPROM. Particularly advantageous are memory modules, which are referred to as dual-ported SRAMs. Such types of memory are u. a. offered under the type designations CY7C132, CY7C136, CY7C136A, CY7C142, CY7C146 as integrated circuits (manufacturer: Cypress Perform). Alternatively, the interface can be built with an EEPROM as memory for data. The memory is used to store data from the emergency lighting system. The store files data of the emergency lighting system. The store is a data exchange basin. The data stored in the memory can be read by the building management system. All data to be transferred from one half of the electrical system to the other side of the electrical system is buffered in the memory.

Another part of the interface is a circuit. The interface has a protocol adaptation protocol. The interface uses the circuit to convert the serial bus data into a protocol. The protocol follows from the protocol used in the building management system is used for data communication. With the mentioned circuitry realization of the memory and the memory controlling unit, such. As a microprocessor, relieved. The circuit processes and converts the data on the serial bus into data corresponding to the bus protocol prevailing in the building management system.

The interface is structured so well that, if necessary, only the module comprising the protocol adaptation circuit has to be exchanged if the interface is to be adapted to another building management system. All other modules of the interface can be kept unchanged. The interface can be kept unchanged as a standardized component or as a standardized module, if necessary, only the module for level adjustment or the bus adapter for data communication to the building management system must be adapted or replaced. In addition, the synchronization between the two sides of the system is simplified.

The interface serves to establish a communication between two pages. The communication takes place between a building management system and an emergency lighting system. The method for communication connects the data streams between an emergency lighting system and a building management system with the aid of the interface. For this purpose, the interface has at least one memory, preferably a memory area which is subdivided into subregions. The memory is used so that data for communication can be transferred from one side to the other side of the interface. Thus, data is transmitted from the emergency lighting system (the one side) to the building management system (the other side) and vice versa. For this purpose, the data to be transmitted are stored in the memory. In the emergency lighting system there is data intended for the other side of the interface. This data is transferred with the interposition of the memory, ie in and out of the memory.

Such an interface can be installed in a building. The need for emergency lighting systems is particularly high in public buildings (see, for example, the compilation above, where emergency lighting systems are to be installed everywhere). Such buildings have a larger number of individual rooms, z. B. several hundred. About at least some of the individual rooms extends an electrical system. The electrical system is built in the building. In at least some of the individual rooms there is an emergency lighting system. In addition, the building comprises at least in one area an electrical building control system. The memory is realized with individual cells. In cells of the memory, individual data from the operation of the emergency lighting system can be archived. The storage log so to speak, data that arise during operation of the emergency lighting system. The memory, in particular each individual cell, both from the building management system and from the safety lighting system, can be addressed. Afterwards, the data can be read out. By way of example, the data from the emergency lighting system or the first part of the electrical system is stored in the memory. The other side of the system may then read out the data and process it, but not manipulate or modify it.

It is particularly advantageous to use the interface and the associated method in centralized emergency lighting systems, ie. H. in central battery systems and battery systems with power limitation. The central battery system or the battery system with power limitation can be designed for a mixed operation, so work together with a halved number of final circuits for two groups of emergency lights.

Further advantageous embodiments can be found in the following explanations, which can reveal their own inventive aspects.

It is advantageous if the memory is divided into two areas. The memory has, as it were, a first memory area and a second memory area. The memories or parts of the memory areas are addressed, read out, "refreshed" or otherwise processed at regular intervals. The rate at which the addressing occurs is called the access frequency. The access frequency is set in a time ratio, for. B. 500 memory accesses per minute. The access frequency to individual cells of the first memory area has a value other than the access frequency to individual cells of the second memory area. The access frequencies of each storage area are set for the selected storage area. The access frequencies of the individual memory areas vary with each other. During a completed period, the access frequencies of one memory area may differ from the access frequencies of another memory area. The memory only outlast a certain number of hits. For example, some manufacturers often specify EEPROM memory with numbers such as 100,000 for guaranteed write accesses. Reducing the access frequencies as much as possible increases the lifetime of the memories and thus the reliability and fault tolerance of the interface, hence the entire emergency lighting system.

In the interface, the memory is connected by a serial bus. At least one of the operations, such as writing or reading the data, or even both, in the memory is via the serial bus. Preferably, the memory is equipped with at least two ports. The memory can be addressed simultaneously via the ports. One and the same cell can be addressed both at the same time and at the same port at the same time, e.g. B. be read, so at the same moment the stored data for the other side of the system are provided. The dual port allows simultaneous access to the same cell from each port. The data is available to both parts of the electrical installation as required by the emergency lighting system or the building management system. In addition to the serial bus in the interface, the connection of the bus of the building management system and the emergency lighting system can also be realized in the form of a serial bus. Such serial buses are z. For example, the USB buses (Universal Serial Bus Type 1.0, 1.1, 2.0 and 3.0). The interface is simplified in its topology if the USB bus has also been continued internally. Thus, to the building management system and the emergency lighting system towards each, but at least on one side, a USB bus are performed, which extends to the memory of the interface. The memory also simplifies in this case when an ASCII-encoded memory is used for storing the data. Thus, in addition, a host computer via the USB connection to the data z. B. due to a test of the emergency lighting system in the form of test data access. Additionally or alternatively, the data may be provided on a log printer.

One of the two ports, preferably the port to which the bus for the data communication of the building management system is connected, only allows accesses that do not permanently change the data in the memory area or in individual cells. This can z. B. be ensured that only read accesses to individual cells of the memory are allowed. The remaining cells of a memory area can still be manipulated. Of course, it is also conceivable that entire areas, ie an entire storage area, is blocked for the modification of the data stored therein, if the access to this data should have been caused by the building management system.

The memory stores or stores various data of the emergency lighting system. Such data, which are particularly interesting for the entire electrical system, are the following parameters. It should be z. B. data on certain errors of individual lights are available. If lights are off, the event can be saved by storing the light number z. B. are stored with a time stamp. If a lamp in a lamp fails, but the other bulbs of the lamp are still operable, so a corresponding "light" error can also be archived. The errors can be recorded by error codes. Another error that arouses particular interest is an error about the electrical behavior in individual circuits. Such electrical errors can z. B. insulation fault or impermissible current values in individual final circuits. Furthermore, the operating state of the emergency lighting system is important and also interesting. Different operating states can be defined for the emergency lighting system. Voltage values in the emergency lighting system are important parameters. It can z. B. the voltage values of mains voltages or the voltage values are determined within the central battery system and then stored in memory. Another parameter that is always under investigation is the state of charge of a battery, especially if it is a centralized, larger battery, such as a central battery, or a power limited battery, also referred to as a group battery.

In asynchronous access, especially without timing between the emergency lighting and the building management system, the data can be edited using the memory.

The interface can be constructed in many forms. It is particularly easy for the operation and the mounting of such an interface if the interface together with the protocol adaptation circuit represents a closed module. A housing may contain the interface and the protocol adaptation circuit. The housing may preferably be mounted on a DIN rail.

The interface also provides a return channel in a particularly advantageous embodiment. At least one state, preferably several states, can be signaled via the return channel. For the return channel, a further area, a third storage area, can be provided. This memory area can also be addressed via a serial bus. This means that the values in the memory are read out via a serial communication and possibly written. The states represent a lighting condition. On the basis of the state or states, the emergency lighting system puts into operation individual lights operated by it. The building management system is thus able, with the interposition or use of the return channel, selected lights the emergency lighting system on and off.

The building, in which a previously described interface can be installed, can be characterized by the building management system, the building management system. The building control system should include a standardized fieldbus. This reduces the overhead of the protocol adaptation circuit. The interface should be implemented according to one of the aspects discussed above.

The interface can be used very well in emergency lighting systems that are to be connected to a building management system. Particularly advantageous emergency lighting systems work in mixed operation technology. The term mixed operation means that lights of different types, eg. B. continuous lights and ready light lights are connected in the same end or intermediate circuits, which can be switched on, off or switched preferably by a data communication on the power supply lines. There are several lights in a final circuit. Some of the lights are z. B. Steady lights, some of the lights are ready light lights.

The corresponding method for operating an interface as described above works primarily with the memory. The method makes use of the possibility that with memories which have multiple address ports, there is a data collection point in which the data can be written in updated and possibly even read out again at the same time. The data is permanently available and can still be made available almost in real time.

The data collection of the data of the emergency lighting system can be done in special modules of the emergency lighting system. For this purpose, the interface may include a reporting and test device, which is designed as part of the central control system of the emergency lighting system. The control system is preferably arranged in a control cabinet of the battery supply, ie the central or group battery system or battery system with power limitation.

Each side of the plant, the emergency lighting system and the building management system, can independently carry out and carry out the desired processing with the data. It does not matter what the individual access frequencies look like. Each page that accesses the memory works with its own rhythm, which is not disturbed by the other side of the system. Should the building management system fail, this does not disturb the emergency lighting system. The interface acts as a firewall between the parts of the electrical system. Errors and failures of one side do not pass to the other side because of the interface.

The exact operation of mixed operating systems has been addressed in the description, which is to be referred to at this point. As a rule, the emergency lighting systems are more complex structures. A standard emergency lighting system consists of several modules and subsystems. This conceptual feature of emergency lighting systems, in particular the central battery systems and battery systems with power limitation can be further developed to the effect that the emergency lighting system has a reporting system, in particular a self-sufficient reporting system, which alarm messages that have been found in the emergency lighting system signals. Furthermore, the emergency lighting system may include a testing and testing device, which at regular intervals, for. B. once a week, all lights, circuits and subsystems of the emergency lighting system measures for functionality or system failures, power failures or module errors, eg. B. simulated errors in the battery charging circuit of the central battery or limited in their performance battery.

Brief Description

The invention can be better understood by reference to the accompanying figures, wherein

1 schematically shows a first embodiment of an interface according to the invention,

2 schematically shows a second embodiment of an interface according to the invention and

3 a building with a corresponding emergency lighting and a building management system shows.

figure description

The 1 shows a first schematic embodiment of a module that the function of the interface 1 takes over. A store 3 is considered a central place of data exchange. The memory 3 is in individual storage areas 4 . 4 ' divided. The communication with the memory 3 via ports 15 . 15 ' . 17 . 17 ' , where the memory 3 in the different writing and reading states via a control on the lines of the ports 19 . 21 is offset. At the store 3 is on one side of the ports 15 . 17 a shift register 9 connected. On the other side of the ports 15 ' . 17 ' is a microcontroller 5 ' connected. The memory 3 is a dual-port ram, on whose cells in the storage areas 4 . 4 ' via the address bus at the ports 15 . 15 ' can be accessed so that at the ports 17 . 17 ' of the data bus Values of individual cells of the memory 3 issue. The ports 15 ' . 17 ' are on the bus, in the present case eight-pin (8-pin) or eight-wire (8-wire), on the microcontroller 15 '' . 17 '' connected. The ports 15 '' . 17 '' can therefore be on the cells of the memory 3 access. The microcontroller 5 ' sets the memory 3 in different states, eg. B. in a read state, via the control line ports 19 ' , To the control line ports 19 ' such signal lines as WR (Write) / RD (Read) and CS (Chip-Select) are counted. Furthermore, the microcontroller 5 ' with a serial bus 33 ' fitted. To the serial bus 33 ' include the ports 25 . 27 for the T × D line and for the R × D line. For a level adjustment and data adjustment is a circuit 7 , z. In the form of an ASIC, before the connection 29 upstream of the building management system. The data on the serial bus 33 ' be over the circuit 7 adapted to the bus of the building control system. The data from the emergency lighting system passing through the test facility 11 and through the control unit 13 is shown, get into the shift register 9 over the ports 23 of the serial bus 33 to get into the store 3 , ideally sorted in its memory areas 4 . 4 ' to be filed. Would like the building management system to the connection 29 inform about the condition of the emergency lighting system, so in the memory 3 stored data on the other ports 15 ' . 17 ' be read out. The two serial buses 33 . 33 ' can independently with their own clocks and their own access speeds and access frequencies with the memory 3 communicate. Only between the individual elements of the emergency lighting system is an arbitration 31 necessary. The serial bus 33 ends at the ports 23 of the shift register 9 , The serial bus 33 the emergency lighting system is thus (indirectly) through the memory 3 completed. Error on the connection 29 of the building management system do not affect the emergency lighting system. The storage areas 4 . 4 ' are dimensioned so that data that needs to be updated more frequently, such as Example, whether a sufficient phase voltage is present at a certain time, with a higher frequency in the memory 3 can be stored. The ports 15 . 15 ' . 17 . 17 ' can be addressed at the same time. The memory 3 is a dual-port memory, so every cell that passes through the ports 15 . 15 ' . 17 . 17 ' can be addressed, from both sides, the emergency lighting system and the building management system, can be read. About the circuit 7 the level adjustment or protocol adaptation of the data takes place on the serial bus 33 ' , The microcontroller 5 ' is programmed to store data of the memory area 4 can only be read out. Is on the storage area 4 accessed, then allows the microcontroller 5 ' no change in the data in the memory area 4 , Critical errors, such as B. insulation fault, can from the building management system to the port 29 not be overwritten. The component groups memory 3 , Shift register 9 , Microcontroller 5 ' and circuit 7 for bus adaptation are in a housing 35 combined and thus represent a device that is easily in the electrical system of a building, eg. B. on DIN rails of a distribution or a control cabinet, can be installed. In a separate housing, the components of the control unit 13 summarized the emergency lighting system. These components include the battery charger, power monitor assemblies, and switching devices to provide power to either the connected end-circuits or intermediate circuits from the connected batteries or from the mains.

2 shows a schematic representation of another embodiment, such as the interface 1' can be realized. It is shown where the building management system 29 is to be connected, namely at the output side of the circuit 7 ' which represents the bus interface. the interface 1' has a serial bus that goes into the two serial subbusses 33 '' . 33 ''' is divided. Data on the serial buses 33 '' . 33 ''' be over the ports 25 ' . 25 '' and 27 ' . 27 '' put on and taken down. The ports 25 ' . 25 '' are the ports for connecting the T × D line. The ports 27 ' . 27 '' are the ports for connecting the R × D line. The data processing takes place in the microcontroller 5 instead, at the bus pins the address ports 15 and the data ports 17 are connected. Depending on which storage area 4 . 4 ' . 4 '' in the store 3 ' to be accessed, the memory control lines at the ports 19 set to a high or a low level. The microcontroller 5 prevents manipulation of data by the building management system 29 must not be changed, z. B. Data on operating errors of the emergency lighting system, which in 2 through the test facility 11 ' and the control unit 13 ' has been symbolized. The testing device 11 ' tests individual areas of the emergency lighting system, eg B. the functionality of all final circuits, at regular intervals, z. B. at weekly intervals, wherein the control device 13 ' Part of the centralized battery system is. The memory 3 ' is in individual storage areas 4 . 4 ' . 4 '' divided, so that the individual purposes specific memory areas 4 . 4 ' . 4 '' can be controlled differently and no error in the data processing of data for errors of individual lights, errors of individual circuits or uncontrolled state changes of emergency lighting can occur. The memory 3 ' can be realized by a RAM as well as by an EEPROM. It can be a storage area 4 be realized as EEPROM, while a memory area 4 ' can be built with a normal RAM. The bus at the ports 15 . 17 and the control lines at the control line ports 19 summarize the storage areas 4 . 4 ' . 4 '' to a total memory 3 ' together.

3 shows a building as an example of a building 50 through its outer contours of saddleback roof and outer walls. The interiors of the building 50 have not been separately marked so that the electrical system 62 to which the emergency light lighting system 52 heard, is better to see. The emergency light lighting system 52 includes switching modules 54 . 56 and connected lights such as the permanent light 58 and the ready light 60 that the final circuits 70 represent. The central battery cabinet 80 the emergency light lighting system 52 includes the testing device 11 '' and the control unit 13 '' , To the battery cabinet 80 is the interface 1'' connected. the interface 1'' has a first page 76 to which the emergency lighting system 52 is to join, and a second page 78 to which the building management system 29 is to be connected. The battery cabinet 80 provides the subnetworks which result from the phase conductors L, L ', the neutral conductors N, N' and the earth conductors PE, PE '. The ground conductor PE is also used as shielding, z. B. for the batteries 66 . 68 or accumulators that have such a large capacity that they may be regarded as batteries without power limitation, ie as central batteries. The emergency power source 64 is about the control unit 13 '' for the standby lights 60 and the permanent light lamps 58 available when the central power supply 72 should be partial or complete. The electrical energy is through the battery cabinet 80 to the permanent light lamps 58 , the ready light lights 60 and the subdistributors 74 directed. The test facility 11 '' can over the measuring line 82 States and failures of the switching module 54 monitor and detect.

LIST OF REFERENCE NUMBERS

1, 1 ', 1' '

 interface

3, 3 '

 Storage

4, 4 ', 4' '

 storage area

5, 5 '

 Microcontroller, z. The family MCS-51

7, 7 '

 Circuit, in particular for protocol adaptation, such as a bus adapter or a bus interface, z. B. with a level converter

9

 shift register

11, 11 ', 11' '

 Test device or testing device, in particular the emergency lighting system

13, 13 ', 13' '

 Control unit, in particular the emergency lighting system

15, 15 ', 15' '

 Adressbusports

17, 17 ', 17' '

 Datenbusports

19, 19 '

 Control line ports, especially for read and write accesses

21

 Port for one line of the serial bus

23

 Ports for serial bus lines

25, 25 ', 25' '

 Port for T × D line

27, 27 ', 27' '

 Port for R × D line

29

 Connection, in particular for building management system or building management system

31

 arbitration

33, 33 ', 33' ', 33' ''

 serial bus

35

 casing

50

 building

52

 Notlichtbeleuchtungsanlage

54

 Switching module, in particular lamp switching module

56

 Switching module, in particular lamp switching module

58

 Continuous lighting

60

 Maintained light lamp

62

 Electrical system

64

 Emergency power source, z. B. central battery

66

 first battery

68

 second battery

70

 final circuit

72

 Central power supply

74

 sub-distribution

76

 one side, especially the electrical system

78

 second page, especially the electrical system

80

 central battery cabinet

82

 Measurement line

L, L '

 Phase conductor or power supply line

N, N '

 Neutral or energy return

PE, PE '

 Earth conductor or shielding

Claims (11)

Interface ( 1 . 1' . 1'' ) between a first building management system and an emergency lighting system ( 52 ) are made available to the building management system via the data of the emergency lighting system, characterized in that the interface ( 1 . 1' . 1'' ) a circuit ( 7 . 7 ' ) for logging and level matching, the data of a serial bus ( 33 . 33 ' . 33 '' . 33 ''' ) into a protocol used in the building management system for data communication, and the interface ( 1 . 1' . 1'' ) a memory ( 3 . 3 ' ) for data in which data from the emergency lighting system ( 52 ), which are read by the building management system, the circuit ( 7 . 7 ' ) for protocol and level adjustment depending on the building management system interchangeable and so adaptable to a second building management system. Interface ( 1 . 1' . 1'' ) according to claim 1, characterized in that the memory ( 3 . 3 ' ) is divided into at least two areas, a first memory area ( 4 ) and a second memory area ( 4 ' ), wherein an access frequency to individual cells of the first memory area ( 4 ) and an access frequency to individual cells of the second memory area ( 4 ' ) differ during a completed period. Interface ( 1 . 1' . 1'' ) according to one of the preceding claims, characterized in that a write or readout of the data or both in the memory ( 3 . 3 ' ) over the serial bus ( 33 . 33 ' . 33 '' . 33 ''' ) he follows. Interface ( 1 . 1' . 1'' ) according to claim 3, characterized in that the memory ( 3 . 3 ' ) at least two ports ( 15 . 15 '; 17 . 17 ' ), which are simultaneously addressable, to access a same cell from each port ( 15 . 15 '; 17 . 17 ' ) from simultaneous access. Interface ( 1 . 1' . 1'' ) according to claim 4, characterized in that one of the two ports ( 15 . 15 '; 17 . 17 ' ) exclusively a read access to individual cells of the memory ( 3 . 3 ' ), wherein in the memory ( 3 . 3 ' ) Data for at least one of the following parameters are available: a) Error of individual luminaires ( 58 . 60 ), b) faults in individual circuits such as insulation faults or impermissible current values in individual final circuits ( 70 ), c) operating status of the emergency lighting system ( 52 ), d) voltage value of a mains voltage, e) state of charge of a battery ( 66 . 68 ). Interface ( 1 . 1' . 1'' ) according to claim 5, characterized in that the port ( 17 ' ), to which a bus for the data communication of the building management system is connected, exclusively a read access to individual cells of the memory ( 3 . 3 ' ). Interface ( 1 . 1' . 1'' ) according to one of the preceding claims, characterized in that the interface ( 1 . 1' . 1'' ) together with the circuit ( 7 . 7 ' ) represents a completed module for protocol and level adjustment. Interface ( 1 . 1' . 1'' ) according to claim 7, characterized in that the completed module in a housing ( 35 ) is mounted mounted on a top hat rail. Interface ( 1 . 1' . 1'' ) according to one of the preceding claims, characterized in that the interface ( 1 . 1' . 1'' ) comprises a return channel, via which at least one state is signaled, on the basis of which the emergency lighting system ( 52 ) individual luminaires operated by it ( 58 . 60 ) puts into operation. Method for adapting an interface ( 1 . 1' . 1'' ) for communication between an emergency lighting system ( 52 ) and a building management system, the interface ( 1 . 1' . 1'' ) with a memory ( 3 . 3 ' ) and with a circuit ( 7 . 7 ' ) is equipped for protocol and level adjustment, wherein in the memory ( 3 . 3 ' ) Data for communication from one side to another side of the interface ( 1 . 1' . 1'' ), ie of the emergency lighting system ( 52 ) to a first building management system and vice versa, and wherein the circuit ( 7 . 7 ' ) is exchanged for protocol and level adjustment depending on the building management system and adapted to a second building control system. Building like a public building ( 50 ) with individual rooms in which an electrical system ( 62 ) is constructed, which in at least some of the individual rooms an emergency lighting ( 52 ) and which comprises an electrical building control system at least in one area of the building, the emergency lighting installation ( 52 ) a memory ( 3 . 3 ' ) as part of an interface ( 1 . 1' . 1'' ), in which in cells of the memory ( 3 . 3 ' ) individual data from the operation of the emergency lighting system can be archived, the memory ( 3 . 3 ' ) is addressable and readable both by the building control system and the safety lighting system, and wherein the emergency lighting system ( 52 ) is supplied as a centralized battery system emergency lighting in a fault case in mixed operation technology, and wherein the interface ( 1 . 1' . 1'' ) is designed in accordance with one of claims 1 to 9.

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