HRP960334A2 - Radio signaling system to report harmful incidents - Google Patents

Description

This system refers to a notification system related to harmful events, such as burglaries, fires, vandalism or the like, which is equipped with transmitters and receivers.

In order to be able to take care of the increase of harmful events, especially burglaries, car thefts, etc., it is suggested to report possibly occurring harmful events to the appropriate local headquarters via the radio network, especially via the existing telephone-radio network. In this way, the possibilities offered by radio networks, especially modern mobile radio networks, will be used to reduce the costs that arise when setting up a notification system for harmful events.

The notification system according to this invention can, for example, use ACTIONET from Nokia. In doing so, only data transmission capabilities are needed into organizational channels, to which the data of external alarm selection devices are transferred.

External devices for alarm selection, through which the signals of one group of signal generators pass, consist of a micro control unit (microcontroller), a unit with a multiplexed digital input/output unit (I/O) and a radio modem. Problems arising from many external devices for alarm selection, whose signals must be transmitted over few frequencies, are solved in a similar way to the mobile telephone network. This means, if there is damage, the user of the alarm registers at the control panel. If one frequency is free, then one is assigned to it. If, for example, no frequency is free, the control panel puts it on hold and gets the next free frequency. In this way, not one of the many notifications is lost.

External alarm selection devices for drives with common damage detection sensors are provided via distributed alarm devices. The deployed alarm devices provide the alarm reporting devices with a voltage-free contact for alarm evaluation. Electronic alarm devices can only be used via a signal converter, because multiplex drives require external alarm devices and a key-activated switch.

External devices for alarm selection supply subordinate alarm devices with mains voltage via separate lines. If possible, two notification lines are provided per housing unit. Notification line 1 activates the alarm, for example, after opening the front door within a period of 30 seconds. This is intended to offer the user the possibility to turn on the device silently via the key switch.

All external alarms in "polling" mode, that means cyclical, are controlled by the control center, whether the radio line is in order and whether the device responds correctly. It takes a maximum of 2 seconds per alarm to establish a connection, transfer data and terminate the connection. If there is a sabotage attempt on the external alarm, then with each reading cycle, an alarm is triggered in the control unit. The cycle time (duration) is, depending on the number of external participants, a few minutes to a maximum of 1.5 hours.

If many alarms are activated, then the corresponding alarm selection device is registered at the control panel and they are processed in order. This way, not a single message is lost.

As a rule, external alarm selection devices are supplied with power from the mains. In addition, external alarms are equipped with their own battery, which in case of power failure. of energy is provided by continuous operation of approx. 2 hours. For this reason, a buffer battery of 12 V and 6.5 Ah is installed in each device (basic and extended device). The parts of the network in the devices are supplemented, if possible, with a switch to turn on the charging and guarantee the operation of the device without special maintenance. The batteries have a charge control device, which automatically informs the control panel when the battery capacity is reduced. In this way, a safe and reliable system is obtained.

This invention is explained in more detail with the drawings, from which, as well as from the subclaims, the details of the invention are visible. The drawings also contain instructions related to the function of the displayed components. In addition, "Simatic" is a trademark and stands for memory-programmable control. The drawings show:

Sl. l inspection using a burglar alarm device,

Sl. 2 alarm selection device for a multi-family house,

Sl. 3 basic device,

Sl. 4 additional (extended) device i

Sl. 5 assembly of the reception center.

The burglar alarm system includes a central reporting point with a terminal for processing and printing the report, as well as a radio device, which is designed for 5000 alarms and can be configured by clients, for example, city administration, police department or similar and can be expanded per 10,000 alarms.

Devices for the selection (evaluation) of alarms are installed either stationary located in residential buildings or similar facilities, or mobile in motor vehicles. The transmission of the alarm is carried out either via radio-modem, whereby one basic device is provided for a maximum of three residential units. Expanded devices for eight housing units are also possible, with an independent configuration determined by the user.

Networking of reporting stations (places) with the device for alarm selection is done using radio lines, for example with a frequency of 410 to 430 MHz, in the ACTIONET system of the Nokia company. All other standard frequencies and systems can be used. A system of this type preferably has four organizational channels with automatic switching of data channels in case of interference. It is possible to control the function of the alarm selection device by cyclic reading (calling) in hourly or minute intervals, as performed.

The basic device, i.e. the device for selecting alarms, has a metal housing with IP20 protection for wall mounting. The metal housing has cable glands above a rubber grommet with strain relief and a lid open notification contact to ensure caution when opening the device. The supply voltage can be arbitrary 230 V alternating current or 12 V direct current.

The radio modem for the alarm selection device has a connection module for about three housing units, with a switch that is activated with a key, in addition three light diodes and one input for a device for reporting an alarm with a delay, as well as an input for a device for reporting an alarm without a delay.

In addition, synchronous serial interfaces (interfaces) are provided for connecting up to four additional devices, as well as one auxiliary interface for commissioning and maintenance. Furthermore, the basic device has the possibility of autoconfiguration of additional devices (extensions).

The device for selecting the alarm of one additional device also has a metal casing with IP20 protection for wall mounting with a cable entry above the rubber grommets with relief from the train, and a notification contact on the cover, in order to be careful when opening the device. By the way, it is designed in the same way as the basic device, plus there is another intermediate circuit for connection to the basic device.

Also, the mobile alarm selection device has a metal casing with IP20 protection for installation in a motor vehicle, where there are also cable glands above the rubber bushings with tensile stress relief, and there is a contact for reporting the opening of the cover in order to draw attention when the device is opened. . Power supply is provided by direct current 12 V when receiving current in the transmitter drive of 5 A (approx. 2 seconds) and "Stand-by" drive of a maximum of 1 A (including heating). Heating is provided as integrated heating of the device. The radio modem is designed in the same way as for fixed devices. The device for selecting the alarm also has an auxiliary intermediate circuit for commissioning and maintenance and is designed for a temperature range from -40° to +50°. Its electronics are suitable for motor vehicles, this means that it is designed to be resistant to cherry and interference.

Using the previously described modular design with the application of external expansion modules, a unique hardware design for all external components is obtained with a compact design and small installation size. The electronics are optimally selected in relation to the price, because they perform only the really necessary functions, and all components can be installed as one group (except for the radio modem). The multiplex technique also contributes to this.

It is recommended that the expansion modules be up to 100 m away from the basic device, so that the installation of the expansion device can be carried out close to residential units and with low costs for laying cables. The auto-configuration of the expansion module is particularly advantageous, this means that the addressing is done automatically. The fitter only needs to connect the cable at the installation site. Using the auxiliary circuit board, it is possible to quickly and easily recognize errors, e.g. via a mobile terminal.

A particular advantage is the fact that the new system according to this invention is independent of the local power grid for at least a limited time. In this way, the danger of sabotage is avoided. The design of the steel sheet casing also contributes to this.

Claims (7)

1. Notification system for harmful events, such as burglaries, fires, vandal attacks or the like, indicating that the resulting harmful events can be reported via the existing radio network, especially the telephone radio network. 2. Notification system according to claim 1, characterized by the fact that the frequencies and working routines of mobile radio technology can be used. 3. Notification system according to claim 2, characterized by the fact that it works with standard radio frequencies, for example with frequencies between 410 and 430 MHz, and in case of interference on one frequency it automatically searches for another frequency. 4. Notification system according to one or more of the previously mentioned requirements, characterized by the fact that alarm selection devices, via alarm providers with usual sensors for reporting a harmful event, such as glass sensors, motion sensors (e.g. in a motor vehicle), devices for reporting a fire, reports the occurrence of harmful events. 5. Notification system according to claim 4, characterized in that the alarm selection device is tested, in previously determined intervals adapted to the transmission potential, with regard to its functionality. 6. Notification system according to one or more of the previous requirements, indicated by the fact that the device and for selecting the alarm are designed for parallel operation with alternating current of voltage 230 V and direct current of voltage 12 V or 24 V. 7. Notification system according to one or more of the previous requirements, indicated by the fact that the alarm selection devices are in such a design that sabotage is practically impossible, and that they have, for example, a case made of sheet steel that cannot be destroyed, an emergency power supply and the possibility of checking the functioning.