Animal Tracking Devices Use MEMS Reed Sensors REED RELAYS REED SENSORS REED SWITCHES Introduction Many animal species are on the decline for a multitude of potential reasons. Tracking the animals is the best way to study their habits in their natural habitats. This approach has yielded the best results in determining the decline of the species. To accomplish this, microelectronic circuits are added to a collar or can be implanted into the animal. A micro reed sensor, which draws no power, in these thrifty battery powered devices, is used to extract information from the micro-circuitry. Figure 1. MMS-x-2 Sensor physical layout Features • Smallest reed sensor on the market • The reed switch used in the Reed Sensor is hermetically sealed and is therefore not sensitive to wet, moist environments • The micro-sensor is not influenced by temperature extremes • The micro-reed sensor is capable of animal implantation. • Surface mounting available • Contacts dynamically tested • High reliability • Zero power consumption Figure 2. Implantable tracking device with built in MEMS reed sensor device. Applications • Ideal for use where space is of paramount concern in a battery operated device and where animal implantation is a requirement. Figure 3. MEMS reed switch MEMS Reed Sensor Allow Retrieval of Vital Migratory Habits of Endangered Animals Several animals are on the endangered list. To prevent them from becoming extinct, the government and private donators have set up programs, such as the development of tracking devices that are worn on a collar and/or implanted in the animal. The implanted device has proven to be more reliable, as the collars would wear over time or be torn off by their host. These tracking devices must be very small, and of course, are battery operated. When the implanted tracking device is used, after the animal has been tracked for a given period of time, they are caught and tranquilized. Then a magnet is bought up to the implanted device, closing MEDER’s micro-machined hermetically sealed reed sensor, which here to fore has drawn zero power, then in turn wirelessly transmits all of the tracking information into a receiver. The tracking information can then be analyzed, and decisions can be made on how to help the animal better survive. MEDER electronic Application MEDER electronic AG | Germany | tel.: +49(0)7731/8399-0 | Email: [email protected] MEDER electronic Inc. | USA | tel.: +1 508.295.0771 | Email: [email protected] Page 1 of 2 www.meder.com Animal Tracking Devices Use MEMS Reed Sensors REED RELAYS REED SENSORS REED SWITCHES Specifications (@ 20° 20°C) MMS Series Series Operate specs Min Max Must close distance 1 Must open distance 0.5 Hysteresis Load Characteristics Switching voltage Switching current Carry current Contact rating Static Contact resistance Dynamic contact resistance Breakdown voltage Operate time Release time Operate Temp Storage Temp 4 Units mT mT Typical 50% Min Max Units Because MEDER’s sensors use hermetically sealed reed switches that are further packaged in strong high strength plastic, they can be subject to rough treatment and environmental concerns such as grit, water, and moisture without any loss of reliability. MEDER’s sensors are packaged for surface mounting and can be wire bonded for using minimal space. Surface Mount MEMS Series MEMS Series 3 100 100 300 50 1000 V µAmps µAmps µWatts Ω 50 1000 Ω 50 1.0 0.5 -20 85 -35 130 MMS MMSMMS-1A1A-V2 0 V msec msec °C °C Dimensions mm Illustration inches W 2.05 0.081 H 1.35 0.053 L 4.80 0.189 W 0.90 0.035 H 0.55 0.022 L 1.30 0.051 **Consult the factory for your specific design requirements. MEDER electronic Application MEDER electronic AG | Germany | tel.: +49(0)7731/8399-0 | Email: [email protected] MEDER electronic Inc. | USA | tel.: +1 508.295.0771 | Email: [email protected] Page 2 of 2 www.meder.com