Microwave sensor and mutual interference preventing system between microwave sensors
AssigneeOptex Co., Ltd.
InventorMasatoshi Tsuji
Life of this patent
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Abstract
A microwave sensor is provided that transmits microwaves toward a detection area, performs an object detecting operation based on reflected waves from an object being present in the detection area, and outputs an object detection signal based on a result of the abject detecting operation, the microwave sensor being provided with a detecting operation controller for controlling the object detecting operation to be performed intermittently at a predetermined detection cycle, a time setting changer for changing time setting of the detection cycle, and a filter for preventing a signal outside of a frequency region of a signal obtained when detecting a human figure from being included in the object detection signal and from being output,
Claims20
A microwave sensor for transmitting microwaves toward a detection area, performing an object detecting operation based on reflected waves from an object being present in the detection area, and outputting an object detection signal based on a result of the object detecting operation, the microwave sensor comprising:
- a detecting operation controller for controlling the object detecting operation to be performed intermittently at a predetermined detection cycle,
- a time setting changer for changing a time setting of the detection cycle, and
- an electrical filter for preventing an electrical signal outside of a frequency region of an electrical signal obtained when detecting a human figure from being output in the object detection signal.
Dependencies are inferred from the claim text.