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Pyroelectric infrared motion sensors from Panasonic for optimal usability and reliability
Compact, high-sensitivity, circuit-integrated package realized by unique design concept
Wide range of lens lineup, and low current consumption types are available
Compact, high-performance pyroelectric infrared sensor
Special designs from Panasonic that provide high sensitivity and reliability
Article on the achievement of producing 100 Million Units
Small Size, Big Energy Savings
Features
Two times better sensitivity
The sensitivity has been significantly improved thanks to a unique slit design of the pyroelectric elements. The separated sensing areas prevent thermal crosstalk between the single sensing elements. Therefore, reliable detection is possible even if the temperature difference between the background (e.g. floor / wall) and the target object (human) is small. (e.g. ΔT = 4℃)
Easy design-in
The integrated amplifier / comparator circuit inside a TO-5 metal can (digital type) prevents interferences caused by electromagnetic fields, such as those generated by cell phones and wireless devices. A special differential circuit design is introduced for the EKMB 6μA type for applications where a high noise resistance is required (up to GHz range).
Small and fancy lens design
Thanks to the special design of the small pyroelectric elements, it is possible to use a smaller lens size while keeping the same detection area and distance compared to conventional sensors.
Four times better signal-to-noise ratio
Improved signal-to-noise ratio thanks to a special I/V circuit which is used for converting a current signal from the pyroelectric element to voltage. Panasonic PIR motion sensors perform by the feedback capacitor and the operational amplifier, different from the conventional FET-type, thereby decreasing the probability of false alarms due to temperature fluctuation.
Lead-free pyroelectric element
A ferroelectric Lithiumtantalate (LiTaO3) single lead-free crystal is used as the pyroelectric element for Panasonic PIR motion sensors. Conventional PIR motion sensors normally use a ceramic base material (e.g. PZT) for the pyroelectric element, which contains lead in many cases.Low current consumption EKMB (WL)
Reduction of current consumption (1, 2 or 6μA) thanks to the special circuit design technology allows battery life to be extended for battery-driven products.
Application examples
It has various usages,including IoT-related devices and systems such as occupancy detection, monitoring, home appliance control, and intrusion detection, as well as high-bay lighting and street light control.
Industry examples
Home appliances: wide range of lens lineup, and slight motion performance
IoT: radiation noise resistance and low current consumption. (adjacent to wireless module, battery driven)
Lighting: S/N ratio and Slight motion performance. (Reduction of malfunctions and non-operations)
