Radar Sensor With Switching Output

Features

• • Cable, 2m
• • Protection class IP67
• • FMCW radar (frequency-modulated continuous wave radar), detects stationary and moving objects
• • Approved for Europe (incl. UK), Australia, New Zealand, Japan and China
• • Max. range 24 m
• • Configuration via DIP switch
• • Operating voltage 12…30 VDC
• • PNP/NPN switching output

Functional principle

An FMCW radar is a Frequency Modulated Continuous Wave radar. FMCW is the English abbreviation for Frequency Modulated Continuous Wave. Unmodulated continuous wave radars have the disadvantage that they cannot measure distances due to the lack of a time reference. Such a time reference for measuring the distance of stationary objects can be generated by means of frequency modulation. Using this method, a signal is emitted which continually changes frequency. A periodic frequency that increases and decreases linearly is used to limit the frequency range and to simplify the signal evaluation. The factor for the rate of change df/dt remains constant. If an echo signal is received, then this has a runtime delay as with the pulse radar, and thus a different frequency that is proportional to the distance. As a result, unlike with unmodulated Continuous Wave (CW) radars, both stationary and moving objects can be detected. Conformity CE ISM defined in ITU-R 5.138, 5.150 and 5.280 ETSI/EN 300 440 FCC part 15 RSS-210 ANATEL Category II CMIIT Category G ARIB STD T-73 KC mark — MSIP/RRA NCC