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Signal processing device

A signal processing device and signal technology, applied in the direction of measurement device, radio wave reflection/re-radiation, utilization of re-radiation, etc., can solve problems such as misidentification

Inactive Publication Date: 2015-02-11
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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Problems solved by technology

However, in the case where the object detection device 101 is used outdoors, for example, due to motions of objects other than the detection target (detection target object) (for example, swing motions of branches and leaves of trees and swing motions of electric wires), False detection may occur where an object other than the detection target is mistakenly recognized as the detection target object

Method used

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Embodiment 1

[0096] The following references Figure 1 to Figure 46 The signal processing apparatus 2 of this embodiment will be described.

[0097] The signal processing device 2 is configured to perform signal processing on sensor signals output from the radio wave sensor 1 configured to transmit radio waves and receive radio waves reflected by objects. Notice, figure 1 It is a block diagram showing the sensor device Se including the radio wave sensor 1 and the signal processing device 2 .

[0098] The radio wave sensor 1 may be a Doppler sensor. The Doppler sensor transmits radio waves of a predetermined frequency to the detection area, receives radio waves reflected by objects moving in the detection area, and outputs the Doppler frequency, the frequency of the transmitted radio waves, and the frequency of the received radio waves The difference between the corresponding sensor signals. Therefore, the sensor signal (the sensor signal output from the radio wave sensor 1 ) is an ana...

Embodiment 2

[0266] The present embodiment relates to a signal processing apparatus for signal processing a sensor signal from a sensor for receiving a wireless signal reflected by an object.

[0267] In the object detection device 101 disclosed in Document 1, it is considered that components other than the sensor 110 and the illumination control section 113 constitute a signal for performing signal processing on the sensor signal of the sensor 110 as a millimeter wave sensor in the frequency domain processing device.

[0268] Generally, a signal processing device for performing signal processing on a sensor signal in the frequency domain performs recognition processing of a detection target object based on the distribution characteristics of the frequency domain signal. Optionally, the signal processing means extracts signal components due to the motion of the detection target object from the frequency domain signal, and performs recognition processing of the detection target object based...

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Abstract

This signal processing device is provided with a frequency analyzing means for converting a sensor signal that corresponds to radio waves reflected by an object to a signal in a frequency region and extracting the sensor signal as a signal for each filter bank in a group of filter banks in different frequency bands, a standardizing means for standardizing the intensities of signals passed through each of the filter banks by the sum of signals extracted by the frequency analyzing means or the sum of intensities of signals passed through a predetermined plurality of filter banks and outputting a standardized intensity, and a recognizing means for performing recognition processing for identifying the object by one or both of a component ratio of the standardized intensities and a frequency distribution determined from the standardized intensities for each filter bank outputted from the standardizing means.

Description

technical field [0001] The present invention relates to a signal processing device for signal processing a sensor signal from a radio wave sensor. Background technique [0002] Traditionally, it has been proposed to have Figure 56 The illumination system of the structure shown (Document 1 [Japanese Patent Laid-Open No. 2011-47779]). The lighting system includes: an object detection device 101 including a sensor 110, wherein the sensor 110 is configured to recognize the presence or absence of a detection target object within a detection area and output a sensor signal; and a lighting fixture 102, wherein the object detection device 101 is utilized to control the lighting state of the lighting fixture 102 . [0003] The sensor 110 is a millimeter wave sensor configured to transmit a millimeter wave to a detection area and receive a millimeter wave reflected by a detection target object moving within the detection area, and output a Doppler frequency corresponding to all the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41G01S13/52G01S13/58
CPCG01S7/415G01S7/417G01S13/52G01S13/56H05B47/115Y02B20/40G01S13/04
Inventor 杉野聪增田达男村上忠
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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