Burglary Detection
Digital Signal Processor (DSP) improves accuracy and reliability of intruder detection
Technologies used


Industrial sector (PRODCOM code)
    31 Burglar and Fire Alarms

The company Listener Sicherheitssysteme GmbH was founded in 1996 and is a small-sized company with 5 employees. The main business field of the company is the development, installation, distribution and maintenance of Burglary Detection Systems and other security systems for private as well as commercial applications. The company distributes own products and systems of other manufacturers as well. Main product is the LISTENER burglary detection system family consisting of a basic device that can be combined with additional units: The implementation of additional sensors (conventional contact elements, movement detection) is possible if necessary or requested by the customer.

The existing device detects burglaries on the basis of analog processing of characteristic signals in the infrasonic frequency range. It can be used for flats or small detached houses.

Objective of the Application Experiment was the improvement of the competitive situation of the company, substituting the old, analogue based solution by digital data processing methods. For this purpose, the DSP technology was introduced to our specialists within the Application Experiment. Using this technology and the corresponding software developed in this project, restrictions in the analysis of the very complex input signals that were existing up to now, were overcome. The in-depth analysis of burglary-typical signals and their differentiation from normal disturbances is now possible and guarantees a higher system reliability and the prevention of false alarms. Buildings, offices and flats up to an area of 400m² can be now supervised.

Within the specification task, the DSP AD2181 from Analog Devices was selected, because this component met all our requirements, having a reasonable price at the same time.

Listener's microelectronics experiences were restricted to overall knowledge in the design of analogue and digital systems using standard components and PCB design in through-hole technology before. Experiences in microcontroller or DSP technology were not existing, neither from the management nor the technical point of view. We are now able to plan and to manage such projects, to develop DSP based systems, to handle the corresponding development tools, and have extended our PCB design knowledge towards SMT technology.

The project was started in March 1998 with a planned duration of 9 months. In the evaluation task of the prototype it became clear that more effort had to be spent than planned before. The parametrisation of the system making it reliable for all possible applications was more time-consuming than expected. Other unforeseen businesses caused an additional delay, resulting in a necessary total project extension of 3 months.

The total cost of the experiment to industrialisation was 77.3 K€ of which 54 K€ was the FUSE investment and 20 K€ was for industrialisation.

With the anticipated sales increase and the resulting profitability improvement a payback period of about one year and an ROI of 700% over 5 years of sales is expected.

LISTENER Sicherheitssysteme GmbH
Zschopauer Straße 134
9126 Chemnitz

Detailed information

You can also benefit from microelectronics

DSP technology provided LISTENER Sicherheitssysteme GmbH with the means of improving its products and enhancing its market position. You can also achieve significant benefits by acquiring the right microelectronics technology and utilising it in your product or manufacturing process. You can get help from FUSE to realise this.

FUSE is a technology transfer programme, funded by the European Commission to stimulate the wider use of microelectronics technologies by European enterprises to increase their competitiveness and enhance their economic growth. The demonstrator described here is one of many examples in the public FUSE portfolio covering the whole spectrum of microelectronics technologies and spanning a wide range of applications and industry sectors.

FUSE provides you with:

  • Best practice in acquiring specific microelectronics technologies and conducting full development projects through the FUSE portfolio of real life demonstrator documents.
  • Local training and expert support to plan your innovation realistically and help you conduct your project successfully.

Further information and support relating to this and other demonstrators can be obtained from the addresses below.

Further information   Guiding Technology Transfer Node
For further information and support regarding this case study, please contact a Technology Transfer Node (TTN) in your region.
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