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world of industries 8/2016 (EN)

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world of industries 8/2016 (EN)

Automated parking space

Automated parking space monitoring with electronic modules Around 50 million vehicles were registered in Germany last year. This development is causing problems for the infrastructure. Anyone who has ever searched for a parking space in a big city on a Saturday knows this only too well. The topic of parking space monitoring is thus becoming increasingly relevant. Nowadays, traffic jams are an everyday occurrence and the condition of many roads and bridges is concerning. However, stationary traffic causes just as serious, if not worse, problems. Anyone who has ever searched for a parking space in a big city on a Saturday knows this only too well. The topic of parking space monitoring is thus becoming increasingly relevant. Here, modern systems work with sophisticated sensor technology. One of the specialist in this field uses electronic modules for its system from the Fulda based measuring and control technology manufacturer Jumo. Sensors for recording moving and stationary traffic According to international studies, the search for a parking space causes around 30 % of city traffic. Three years ago, the Croatian company MobiliSis based in Varaždin began developing sensors for recording moving and stationary traffic. They created the ‘MagSense’ system, which successfully detects parked vehicles in parking spaces, multi-storey car parks, and underground car parks. The system is based on magnetic field measurement. The ‘Mag- Sense’ sensor is able to accurately measure the earth’s magnetic field and evaluate the smallest changes. In the present applications of vehicle and traffic data recording, the sensor first measures the earth’s “undisturbed” magnetic field. The magnetic field is affected by ferromagnetic substances present in all vehicles. As soon as a vehicle is within the sensor’s measuring range, the sensor is able to record and measure the changes in the earth’s magnetic field very accurately. The measured values are extracted and evaluated in a target-oriented manner. However, in addition to ferromagnetic materials, units and eddy currents also influence the earth’s existing magnetic field. This is recorded accurately by MagSense. About Jumo The Jumo corporate group, based in Fulda, Germany, is a manufacturer in the field of industrial sensor and automation technology. Their products are used across the industry sectors such as heating and air-conditioning, food and beverage, renewable energy technologies, and water and wastewater. Today, the company is the global player in the field of industrial temperature probes. The corporate group employs more than 2,200 people across five branch offices in Germany, 24 subsidiaries abroad, and more than 40 agencies around the world. The company posted a turnover of 218 million euros in 2015. INDUSTRIAL AUTOMATION INDIA 42 World of Industries 8/2016

SENSORS AND MEASUREMENT More powerful than any detection modes currently used The magnetic field sensors precisely record the occupancy of individual car parking spaces with a detection rate greater than 99 %. The real-time data for each parking process is then transmitted to a parking guidance system or an external server. It also enables the recording of individual parking spaces which can be used for direct navigation to a free parking space. The system is now being successfully used in a major German airport. In summary, MobiliSis technology is clearly more powerful than any detection modes currently used. It can be used for stationary as well as for moving traffic, and in the latter case, is used for counting and classifying vehicles as passenger vehicles or trucks, for example. Counting may be carried out at entrances and exits, as well as on main roads and highways for calculating the volume of traffic. The magnetic field sensors are also suitable for use with signal controls and for controlling entry access. This enables, for instance, the implementation of a simple access control system for long-stay parking with a monthly charging system at entrances and exits, or at the allocated parking spaces. Specialists in temperature sensors and electronic modules The partnership between MobiliSis and Jumo GmbH & Co. KG first began with temperature sensors for another application. This is the main product focus for the measuring, control, and automation technology specialists from Fulda. However, due to the significant production depth, the company also has its own product area for electronic modules. At the core of the electronic module manufacturing are three state-of-the-art SMD assembly lines, which can assemble up to 100,000 components per hour. The annual capacity of SMD assembly is currently 140 million components. In addition, there are 10 semi-automatic pieces of assembly equipment for THT assembly. Here, the annual capacity is up to 14 million components. With soldering processes, reflow soldering, wave soldering, as well as selective soldering, the company is well positioned for various requirements. Selective soldering frequently replaces hand soldering and guarantees consistent results. All mechanical soldering processes are carried out in an N2 atmosphere and are lead-free, therefore providing high process reliability. To ensure high quality levels, the assembled SMD modules are checked by automated, optical inspection systems (AOI). The very first test with Fulda based company’s products demonstrated its high manufacturing quality, and after having supplied a several thousand circuit boards to MobiliSis, the failure rate is still almost zero. This first test was the beginning of a productive partnership. The electronic modules are manufactured in Fulda according to customer specifications. They are programmed and checked by Mobili- Sis, and then soldered and potted at the Jumo production site in Romania. By using this international production network, the modules can be produced at a competitive cost- benefit ratio. 01 One of the multi-storey car parks monitored by the MobiliSis system 02 The MagSense sensor is able to accurately measure the Earth’s magnetic field and evaluate the smallest changes Photographs: Jumo GmbH & Co.KG 03 The Jumo Wtrans receiver for the wireless measuring probe World of Industries 8/2016 43