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Multi-function radar device

A composite function, radar device technology, applied in measurement devices, radio wave reflection/re-radiation, utilization of re-radiation, etc., can solve problems such as insufficient adjustment, infrared light-receiving lens portion 914, etc.

Inactive Publication Date: 2012-01-25
KOKUSA ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, a structure for adjusting the angles of the transmitting and receiving antenna unit 901 and the infrared light receiving lens unit 914 in the up, down, left, and right directions is required. The case of the angle of 914
And, by adjusting the angle of the transmitting and receiving antenna part 901 and the infrared light receiving lens part 914, the transmission signal radiated from the transmitting and receiving antenna part 901 may be reflected unnecessarily at the infrared light receiving lens part 914, so that the infrared rays from the target object 913 are received by the transmitting and receiving antenna. Part 901 is shielded and cannot fully input to the infrared light receiving lens part 914

Method used

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Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0042] figure 1 The shown composite function radar device has a signal processing part 6, a frequency modulation signal generating part 8, a high-frequency signal generating part 9, a high-frequency signal branching part 10, an intermittent stop signal generating part 7, a sending intermittent stop switch 11, a sending signal amplifying part 12, circulator part 2, transceiver antenna part 1, received signal amplifying part 3, frequency conversion part 4, beat signal amplifying part 5.

[0043] The frequency modulation signal generation unit 8 outputs a control voltage for performing frequency modulation to the high frequency signal generation unit 9 under the control of the signal processing unit 6 . The high-frequency signal generator 9 generates a high-frequency signal, and outputs the high-frequency signal frequency-modulated by the control voltage output from the frequency modulation signal generator 8 as a transmission signal.

[0044] The transmission signal output fro...

no. 2 Embodiment approach

[0063] In this embodiment, a gain adjustment unit 300 is provided instead of the received signal amplifying unit 3 in the first embodiment. Components having the same functions as those in the first embodiment are given the same reference numerals, and description thereof will be omitted.

[0064] image 3 The illustrated gain adjustment unit 300 changes the gain for amplifying the received signal when receiving a reflected wave from the target object 13 and when receiving a radiation wave from the target object 13, and outputs the gain to the frequency converting unit 4. .

[0065] The gain adjustment unit 300 has a first reception signal switching switch 301 , a first reception signal amplification unit 302 , a second reception signal amplification unit 303 , a second reception signal switching switch 304 , and a gain switching signal generation unit 305 . The first received signal amplifying section 302 and the second received signal amplifying section 303 are preset to h...

no. 3 Embodiment approach

[0076] In this embodiment, a measurement noise switching unit 200 is provided between the circulator unit 2 and the reception signal amplifying unit 3 in the first embodiment. Components having the same functions as those in the first embodiment are given the same reference numerals, and description thereof will be omitted.

[0077] Figure 5 The shown measurement noise switching unit 200 switches and outputs the radiation wave from the target object 13 and the thermal noise inside the complex function radar device while the transmission signal is not being transmitted.

[0078] The measurement noise switching unit 200 has a reception signal switching switch 201 and a measurement noise switching signal generation unit 202 . The control voltage from the measurement noise switching signal generation unit 202 under the control of the signal processing unit 60 is input to the reception signal switching switch 201 . The reception signal selection switch 201 switches the signal pa...

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Abstract

Provided is a multi-function radar apparatus capable of measuring both a distance to a target object and a temperature of the target object with high accuracy. A transmission signal produced from a high-frequency signal generating unit (9) is amplified by a transmission signal amplifying unit (12) while intermittently stopped by a transmission intermittent stop switch (11), and is emitted to a target object (13) via a circulator unit (2). A reflected wave from the target object (13) is input as a reception signal to a transmitting and receiving antenna (1) while the transmission signal is emitted, and a radiated wave from the target object (13) is input as the reception signal thereto while the transmission signal is not emitted. The reception signal is amplified by a reception signal amplifying unit (3) via the circulator unit (2), and is mixed by a frequency converting unit (4) with the transmission signal branched by a high-frequency signal branching unit (10) to thereby generate a beat signal. A signal processing unit (6) calculates the distance to the target object (13) and the temperature of the target object (13) based on the beat signal amplified by a beat signal amplifying unit (5).

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Japanese Patent Application No. 2009-051838 filed on Mar. 5, 2009, and the contents thereof are incorporated in this application by reference. technical field [0003] The present invention relates to a radar device, in particular to a composite function radar device with multiple functions. Background technique [0004] Conventionally known radar devices transmit a frequency-modulated transmission signal to a target object, and measure the distance to the target object based on a beat signal (beat signal) generated by mixing the reflected wave with the transmission signal (see patent document 1). [0005] Moreover, all objects with temperature emit infrared rays to nature, and objects with higher temperatures emit stronger infrared rays. Thus, a known infrared thermometer or the like receives infrared rays radiated from a target object, and analyzes the intensity of the received...

Claims

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Application Information

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IPC IPC(8): G01S13/86G01J5/46G01S7/35G01S13/34
CPCG01S13/86G01S7/35G01S13/588G01S13/9307G01S13/343G01S7/412G01S13/937
Inventor 长谷英一
Owner KOKUSA ELECTRIC CO LTD
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