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Energy harvesting transmitter needs only a nudge
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| News - new-products |
EnOcean has launched the third generation of its finger-push-powered building automation transmitters.
The product comes in two parts: the ECO 200 electromechanical generator and the PTM 330 transmitter PCB, which are shaped to make electrical connections through spring contacts without soldering.
"This complete ready-to-go system means that OEMs, with just mechanical expertise, can implement their switching solutions," claimed the firm.
As with its earlier products, the generator works when magnetic flux is suddenly reversed through a coil as a spring mechanism snaps-over.
With the company's power conditioning circuit, the 29.3x19.5x7.0mm generator produces 120-160 μJ at 2V from 1.2mm of movement with a force of 2.9-3.9N.
This force, claims the firm, is low enough to be provided from the action of pushing a bank card into a reading slot.
The 26.2x21.2x3.5mm transmitter has four digital inputs to allow it to send different codes depending on the state of the inputs at the time of actuation.
Two of these are also mapped to meander line PCB tracks in the transmitter which can be converted to switches in a final product using conductive rubber push buttons.
"Additionally, an interface allows configuration of the content of the wireless telegrams during manufacture of a user device," said the firm. "Wireless range is up to 30m inside buildings and 300m in the open, with versions for both 868MHz and 315MHz. Like every EnOcean wireless module, it also has a unique 32bit identification number."
Applications are expected in handheld transmitters to control gates and garages; window and door sensors; position switches; and industrial switches.
"An application that has already been implemented is wireless testing of cable harness in automobile production," said the firm. "The press of a button generates enough energy to determine if the individual components are properly attached to the cable harness."
