KR102062321B1 - The sensoe module using different frequencies to recognize motion of target object and driving method of the same - Google Patents

Abstract

Sensor module using a plurality of different frequencies to recognize the operation of the object provided as an embodiment of the present invention is a signal generator for generating a signal having a plurality of different frequencies, respectively, and irradiates the generated signal toward the object, And a transceiver for receiving a response signal from the object and a signal processor for recognizing the motion of the object based on the generated signal and the received response signal, wherein the motion of the object is determined by the signal processor. It can be recognized by estimating.

Description

Sensor module using a plurality of different frequencies to recognize the motion of the object and a method of operating the sensor module TECHNICAL FIELD

The present invention relates to a sensor module using a plurality of different frequencies for recognizing the motion of the object and a method for recognizing the motion of the object with such a sensor module, and more particularly to using an interferometric radar sensor using a plurality of different frequencies. The present invention relates to a sensor module for grasping the movement of an object in real time and a method of operating the sensor module.

In recent years, with the development of electronic and communication engineering, research on related technologies such as motion control and motion tracking of devices based on a user's motion has grown dramatically. In addition, due to the expansion of smart devices, the influence of the Internet of Things (IoT) is expanding widely from everyday life to all industries.

Various techniques have been studied to recognize an action (movement) for an object such as a user.

For example, after acquiring an image of a user using multiple cameras, comparing / analyzing the acquired images, estimating the user's motion, attaching a fiber bragg gratings (FBG) sensor to the user's body, and the like. For example, a technique of capturing motion by tracking the movement of a sensor according to a user's motion is an example.

However, such a conventional motion recognition technique still has a problem that it is difficult to quickly and accurately recognize the minute motion of the object (for example, the movement unit of mm or less). In addition, it is urgent to derive an improvement solution in that there is still a secondary problem such as a sudden increase in the amount of data to be processed in order to recognize a relatively large motion (for example, a movement unit of cm or more).

Republic of Korea Patent No. 10-1503017 (Registration Date: 2015.3.10) Republic of Korea Patent Publication No. 10-2017-0138768 (published date: 2017.12.18)

An object of the present invention is to provide a sensor technology optimized for the detection of a motion signal, to detect the distance, angle, speed and micro-Doppler signal for the movement of the object using a radar sensor.

In other words, the present invention is to provide a method and a sensor module for quickly and accurately recognizing the movement of an object using an interferometric radar sensor using two or more different frequencies.

As an embodiment of the present invention, a sensor module using a plurality of different frequencies may be provided to recognize an operation of an object.

According to an embodiment of the present invention, a sensor module may include a signal generator configured to generate a signal having a plurality of different frequencies, a transmitter / receiver configured to irradiate the generated signal toward an object, and receive a response signal from the object, and the generated signal. And a signal processor for recognizing the motion of the object based on the received response signal, and the motion of the object may be recognized by estimating information according to the motion of the object by the signal processor.

The information according to the movement of the object according to an embodiment of the present invention includes at least one of micro-Doppler information, distance information, speed information, and angle information, and the sensor module uses an interferometer radar sensor using two or more different frequencies. The signal processor may analyze each transmitted / received frequency and compare the analyzed result with each other to recognize the motion of the object.

In the signal generator, a signal having a selected frequency may be obtained through a plurality of signal sources having different frequencies and a switching element connected to the signal source, or a signal including different frequencies may be applied as an input signal.

At least one transmitting antenna and a plurality of receiving antennas may be separately configured and included in the transceiver, and a signal for an object may be transmitted and received through the transceiver. In addition, the transmitting and receiving unit may be integrally configured with at least one transmitting antenna and receiving antenna.

According to an embodiment of the present invention, the sensor module may further include a signal separator for minimizing interference between signals through the transceiver.

₁)을 갖고, 각각의 수신 안테나와 송신 안테나 간의 이격 거리는 제 2 값(

₂)을 가지며, 제 1 값(

₁) 및 제 2 값(

₂)은 센서 모듈에서 생성된 주파수에 기초하여 소정의 배수 형태로 결정될 수 있다. The separation distance between the plurality of receiving antennas according to an embodiment of the present invention is a first value (

₁ ), and the separation distance between each receive antenna and transmit antenna is a second value (

₂ ), the first value (

₁ ) and the second value (

₂ ) may be determined in a predetermined multiple form based on the frequency generated by the sensor module.

According to an embodiment of the present invention, a method for recognizing an operation of an object using a sensor module using a plurality of different frequencies includes generating a signal having a plurality of different frequencies, irradiating the generated signal toward the object, Receiving a response signal from and recognizing the motion of the object based on the generated signal and the received response signal, the motion of the object can be recognized by estimating the information according to the movement of the object.

The information according to the movement of the object includes at least one of micro-Doppler information, distance information, speed information, and angle information, and the sensor module includes an interferometer radar sensor using two or more different frequencies, and recognizing an operation. In this example, the signal processing unit of the sensor module analyzes each transmitted / received frequency and compares the analyzed result with each other to recognize the motion of the object.

The generating of the signal having the plurality of different frequencies, respectively, may include obtaining a signal having a selected frequency through a plurality of signal sources having different frequencies and a switching element connected to the signal source, or generating a signal having different frequencies. And may be applied as an input signal.

Irradiating a signal generated according to an embodiment of the present invention toward the object, and receiving a response signal from the object, the signal using a sensor module each configured with at least one transmitting antenna and a plurality of receiving antennas separately It may include transmitting and receiving.

The irradiating the generated signal toward the object and receiving the response signal from the object may include transmitting and receiving a signal using a sensor module including at least one of a transmitting antenna and a receiving antenna. can do.

In addition, the method according to an embodiment of the present invention may further include minimizing interference between signals transmitted and received through the signal separator of the sensor module.

₁)을 갖고, 각각의 수신 안테나와 송신 안테나 간의 이격 거리는 제 2 값(

₂)을 가지며, 제 1 값(

₁) 및 제 2 값(

₂) 각각은 센서 모듈에서 생성된 주파수에 기초하여 소정의 배수 형태로 결정될 수 있다. For example, the separation distance between the plurality of receiving antennas may be a first value (

₁ ), and the separation distance between each receive antenna and transmit antenna is a second value (

₂ ), the first value (

₁ ) and the second value (

₂ ) Each may be determined in a predetermined multiple form based on the frequency generated by the sensor module.

 Meanwhile, as an embodiment of the present invention, a computer-readable recording medium having recorded thereon a program for executing the above method on a computer may be provided.

According to an embodiment of the present invention, the sensor module is configured as an interferometer radar sensor using two or more different frequencies, so that motion angle, speed, and distance as well as micro-Doppler (signal) information on an object's motion are obtained. By measuring the movement of the object can be recognized more precisely than the conventional.

In addition, by implementing the frequency band of the sensor module in several stages, the use of lower bandwidth can dramatically reduce the amount of signal processing data, thereby reducing the burden of hardware and software signal processing.

In addition, it may be possible to configure the radar sensor module having a high accuracy for the motion recognition of the object by utilizing a variety of elements or structures using the principle according to an embodiment of the present invention. In other words, since the radar sensor module has a relatively small influence on external environmental factors such as temperature, humidity, dust, and light, the radar sensor module can accurately detect the movement of the object, and thus can be widely used in various times, places, and fields. May be

According to an embodiment of the present invention, the motion recognition method using the non-contact sensor can increase the sophistication of the motion recognition compared to the existing camera-based image technology, and can avoid privacy issues due to camera hacking, and compared to the visible light and infrared camera-based image Only a small amount of data computation is required, which can further increase the response speed.

According to an embodiment of the present invention, the conventional technology (eg, FMCW) requires a high-bandwidth sampling technique due to a high bandwidth, a need for hardware and software due to an increase in the amount of signal processing data, an increase in operating costs, and an increase in power consumption. The problem can be effectively solved by dividing the frequency band into several steps.

1 is a block diagram of a sensor module using a plurality of different frequencies to recognize a motion of an object provided as an embodiment of the present invention.
2 is an example of a structural diagram of a sensor module using a plurality of different frequencies.
3 is another example of a structural diagram of a sensor module using a plurality of different frequencies.
4 shows an exemplary structural diagram of a signal generation unit according to an embodiment of the present invention.
5 is a schematic diagram showing an operation process of a sensor module according to an embodiment of the present invention.
6 is a schematic diagram showing an operation process of a sensor module according to another embodiment of the present invention.
7 is an example of a process of extracting motion information about an object according to another embodiment of the present invention.
8 is a flowchart illustrating a method for recognizing an operation of an object by a sensor module using a plurality of different frequencies according to an embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Terms used herein will be briefly described and the present invention will be described in detail.

The terms used in the present invention have been selected as widely used general terms as possible in consideration of the functions in the present invention, but this may vary according to the intention or precedent of the person skilled in the art, the emergence of new technologies and the like. In addition, in certain cases, there is also a term arbitrarily selected by the applicant, in which case the meaning will be described in detail in the description of the invention. Therefore, the terms used in the present invention should be defined based on the meanings of the terms and the contents throughout the present invention, rather than the names of the simple terms.

When any part of the specification is to "include" any component, this means that it may further include other components, except to exclude other components unless otherwise stated. In addition, the terms "... unit", "module", etc. described in the specification mean a unit for processing at least one function or operation, which may be implemented in hardware or software or a combination of hardware and software. . In addition, when a part of the specification is said to be "connected" to another part, this includes not only "directly connected", but also "connected with other elements in the middle".

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a sensor module using a plurality of different frequencies to recognize a motion of an object provided as an embodiment of the present invention.

The sensor module 1000 using a plurality of different frequencies to recognize the operation of the object 1 provided as an embodiment of the present invention may generate a signal generator 1100 for generating a signal having a plurality of different frequencies, respectively. To transmit the received signal toward the object 1 and recognize the operation of the object 1 based on the transceiver 1200 that receives the response signal from the object 1 and the generated signal and the received response signal. The signal processor 1300 may be included, and the operation of the object 1 may be recognized by estimating information according to the movement of the object by the signal processor 1300.

The present invention aims to provide an example of a sensor technology optimized for detecting a motion signal of an object for the purpose of recognizing a distance, an angle, a speed, and a micro-Doppler signal with respect to the motion of an object in a non-contact manner with high accuracy. The sensor is used to effectively detect distance, angle, speed, and micro-Doppler (signal) information about the movement of the object.

More specifically, the motion of the object 1 is recognized using an interferometric radar sensor using two or more different frequencies. These two or more different frequency signals may be controlled through an input signal applied to the signal generator 1100, for example, a voltage controlled oscillator, or through a switching element (eg, Single-Pole Double-Throw: SPDT). It can be generated by a method of selecting any one of the signal sources of. The signal (eg, response signal) reflected and collected on the object 1 detects micro-Doppler (signal) information due to the movement of the object 1 using a mixer included in the signal processor 1300. The distance, angle, speed, etc. from the sensor module 1000 to the object may be grasped using a phase difference between different frequency signals. In order to obtain more information and to implement a miniaturized module, the sensor module 1000 may be formed to have various structures such as a monostatic radar array using a transmitting antenna and a receiving antenna jointly. In order to minimize signal noise, the signal separation unit 1400 may be further configured.

Transmits a signal (radio wave) of the first frequency (freq) toward the object, receives and processes a response signal from the object, simultaneously transmits a radio wave of the second frequency (freq ') toward the object, and transmits a response signal from the object. By receiving and processing, it is possible to precisely recognize the movement of the object.

The mixer included in the signal processor 1300 may mix the received signal and the locally oscillated signal in order to obtain motion information of the object from the collected signal. The collected signal and the locally oscillated signal may be mixed to precisely obtain distance, angle, and velocity information on the movement of the object by using a phase difference between the micro-Doppler and the transmitted / received signal.

In other words, when using the sensor module 1000 according to an embodiment of the present invention, two or more different frequency signals are generated from the signal generator 1100 configured by a method such as a voltage controlled oscillator or a switching circuit, and an object ( Information (eg, micro-Doppler, phase difference, received signal size, frequency difference, etc.) between a plurality of frequency signals reflected and collected by the movement of 1) may be analyzed. The sensor module 1000 may be designed to include various structures (eg, MonostaticRadarArray, I / Q Quadrature, etc.) for obtaining more information and miniaturizing the module. According to an embodiment of the present invention, the micro-Doppler, the angle, the speed and the distance with respect to the movement of the object 1 may be acquired separately or simultaneously.

Information according to the movement of the object according to an embodiment of the present invention includes at least one of micro-Doppler information, distance information, speed information and angle information, the sensor module 1000 is an interferometer using two or more different frequencies It includes a radar sensor, the signal processor may analyze each of the transmitted and received frequencies, and compare the analyzed results with each other to recognize the motion of the object.

The sensor module 1000 according to an embodiment of the present invention can implement a frequency band in several stages to drastically reduce the total used frequency band, and have an advantage of simply configuring a radar sensor structure.

2 is an example of a structural diagram of a sensor module using a plurality of different frequencies, and FIG. 3 is another example of a structural diagram of a sensor module using a plurality of different frequencies. 4 shows an exemplary structural diagram of a signal generation unit according to an embodiment of the present invention.

2 to 4, in the signal generation unit 1100, a plurality of signal sources (eg, 1110 and 1120) having different frequencies (eg, freq and freq ') and a switching element connected to the signal source (eg, A signal having a selected frequency may be obtained through 1130, or a signal including different frequencies may be applied as an input signal (eg, 1140).

The signal generator 1100 according to an embodiment of the present invention may generate a radio wave having two or more different frequencies by using various structures, and may have a form of minimizing interference between respective frequency bands. For example, a plurality of frequency signals may be generated with a certain time difference in one oscillator (for example, 1150) by using a structure of controlling an input signal of a voltage controlled oscillator to generate two or more different frequency signals. By applying (operating) the generated signal to the sensor module 1000 with a predetermined time difference, interference between signals of different frequency bands can be minimized. As another example, there is a method of extracting (generating) signals having different frequencies from a plurality of signal sources using a switching element (eg, SPDT).

5 is a schematic view showing an operation process of a sensor module according to an embodiment of the present invention, Figure 6 is a schematic diagram showing an operation process of a sensor module according to another embodiment of the present invention. 7 is an example of a process of extracting motion information on an object according to another embodiment of the present invention.

2 to 4, the transceiver 1200 may include at least one transmit antenna 1211 and a plurality of receive antennas 1220,... Separately and include a transceiver 1200. The signal for the object may be transmitted and received through the. In addition, the transmission / reception unit 1200 may include at least one transmission antenna and a reception antenna (eg, 1201).

For example, as shown in FIG. 5, more accurate motion recognition may be possible by collecting different information for each reception antenna using a Bistatic Radar Array structure in which transmission and reception antennas are separately configured. In addition, as shown in FIG. 6, motion recognition accuracy may be improved by collecting more information by using a monostatic Radar Array structure using a transmission / reception antenna jointly.

The transmitting antenna and the receiving antenna may be arranged in a form for effectively transmitting and receiving (collecting) a signal. As shown in FIG. 5, the transmitting antenna Tx may be disposed at a central portion in a polygonal shape. In FIG. 5, although the transmitting antenna is displayed in an octagonal shape, the transmitting antenna may be implemented in various shapes according to the purpose of using the sensor and the surrounding environment during operation. In addition, the receiving antenna Rx may be arranged to be widely distributed in space radially from the transmitting antenna. It is preferable that a plurality of such reception antennas are used.

In addition, for example, by multiplexing a signal having a 90-degree phase difference using an I / Q quadrature structure, more information may be collectively collected.

As illustrated in FIGS. 5 and 6, the transceiver 1200 may be implemented to detect objects and motions located in various directions using, for example, an integrated circular polarization antenna.

₁)을 갖고, 각각의 수신 안테나와 송신 안테나 간의 이격 거리는 제 2 값(

₂)을 가지며, 제 1 값(

₁) 및 제 2 값(

₂)은 센서 모듈(1000)에서 생성된 주파수에 기초하여 소정의 배수 형태로 결정될 수 있다. 센서 모듈(1000)에서 생성된 전파(신호)의 파장에 기초하여 제 1 값(

₁), 제 2 값(

₂) 등이 결정될 수 있다. 예를 들어, 센서 모듈(1000)에서 생성된 전파(신호)의 파장(

) 대비 제 1 값(

₁), 제 2 값(

₂)은

/2, 2

/3 등과 같이 소정의 배수 형태로 미리 결정될 수 있다. 다시 말해서, 제 1 값(

₁), 제 2 값(

₂)은 센서 모듈(1000)의 동작 주파수에 기초하여 선택적으로 결정될 수 있다. 본 발명의 일 실시예에 따르면, 수신 안테나는 복수개들이 일정한 간격으로 이격되어 배치되도록 할 수 있다. 이러한 일정한 간격은 제 1 값(

₁) 등을 지칭할 수 있다. Referring to FIG. 5, a separation distance between a plurality of receiving antennas according to an embodiment of the present invention is a first value (

₁ ), and the separation distance between each receive antenna and transmit antenna is a second value (

₂ ), the first value (

₁ ) and the second value (

₂ ) may be determined in a predetermined multiple shape based on the frequency generated by the sensor module 1000. The first value (based on the wavelength of the radio wave (signal) generated by the sensor module 1000

₁ ), the second value (

₂ ) and the like can be determined. For example, the wavelength of the radio wave (signal) generated by the sensor module 1000 (

) Compared to the first value (

₁ ), the second value (

₂ )

/ 2, 2

/ 3 may be predetermined in the form of a predetermined multiple. In other words, the first value (

₁ ), the second value (

₂ ) may be selectively determined based on an operating frequency of the sensor module 1000. According to one embodiment of the invention, the receiving antenna may be arranged so that a plurality of spaced apart at regular intervals. This constant interval is the first value (

₁ ) and the like.

₁), 제 2 값(

₂) 각각으로 표현될 수 있는 안테나 사이의 거리는 송신단(Tx Ant.)과 수신단(Rx Ant.), 그리고 수신단들 사이의 거리가 일정한 값으로 고정되며 이미 알고 있는 값이라는 의미이다. 이로 인해 송신단에서 출력된 신호는 수신단으로 들어올 때 고정된 거리 혹은 위치에 따라 일정한 위상 변이를 일으킨다는 것을 나타낸다. 즉, 도 5를 참조하면, Rx Ant._1과 Rx Ant._2 사이에 수신되는 신호는 둘 사이의 고정 거리에 의한 차이를 기본적으로 가지고 있으며, 대상체(예컨대, 물체 등)의 위치에 따라 그 차이가 더 달라져 모션 인식이 가능하게 된다. 따라서, 안테나 사이의 거리는 일 수신단과 타 수신단 간에 일정한 거리(

₁)로 유지되고, 송신단과 수신단 사이가 일정한 거리(

₂)로 유지될 때, 동작 인식을 위한 장치가 그 거리를 인식하고 있으면 XY방향의 위치 움직임과 각도, 속도 등 다양한 정보를 파악할 수 있게 된다.Where the first value (

₁ ), the second value (

₂ ) The distance between antennas that can be represented by each means that the distance between the transmitter (Tx Ant.), The receiver (Rx Ant.), And the receivers is fixed to a constant value and is a known value. This indicates that the signal output from the transmitter produces a constant phase shift depending on a fixed distance or position when it enters the receiver. That is, referring to FIG. 5, a signal received between Rx Ant._1 and Rx Ant._2 basically has a difference by a fixed distance between the two, and according to the position of an object (eg, an object). Is further changed to enable motion recognition. Therefore, the distance between the antennas is a constant distance between one receiver and the other receiver (

₁ ), and the distance between the transmitter and receiver

₂ ), if the device for motion recognition recognizes the distance, various information such as position movement, angle, and speed in the XY direction can be grasped.

According to an embodiment of the present invention, the sensor module 1000 may further include a signal separator 1400 for minimizing interference between signals through the transceiver 1200.

The signal separator 1400 according to an embodiment of the present invention may be used to minimize interference between transmitted and received signals. For example. As illustrated in FIG. 3, signal noise generated due to a coupling effect between transmitted and received signals may be minimized using a circulator.

, A)에 기초하여 마이크로-도플러, 대상체의 움직임 속도, 거리, 각도 등에 대한 정보가 개별적으로 또는 동시에 획득될 수 있다. Referring to FIG. 7, micro-Doppler information, information about a moving speed, a distance, and an angle of an object may be separately or simultaneously obtained based on information obtained by using a radar sensor as an example of the transceiver 1200. . Information obtained corresponding to each different frequency (e.g., freq, freq ') fd,

Based on A ), information about the micro-Doppler, the speed of movement of the object, the distance, the angle, and the like may be obtained separately or simultaneously.

8 is a flowchart illustrating a method for recognizing an operation of an object by a sensor module using a plurality of different frequencies according to an embodiment of the present invention.

According to an embodiment of the present invention, a method for recognizing an operation of an object using a sensor module using a plurality of different frequencies includes generating a signal having a plurality of different frequencies (S100), and irradiating the generated signal toward the object. And receiving a response signal from the object (S200) and recognizing the motion of the object based on the generated signal and the received response signal (S300), wherein the motion of the object is information according to the movement of the object. Can be recognized by estimating.

The information according to the movement of the object includes at least one of micro-Doppler information, distance information, speed information, and angle information, and the sensor module includes an interferometer radar sensor using two or more different frequencies, and recognizing an operation. In this example, the signal processing unit of the sensor module analyzes each transmitted / received frequency and compares the analyzed result with each other to recognize the motion of the object.

Generating a signal having a plurality of different frequencies, respectively (S100), obtains a signal having a selected frequency through a plurality of signal sources having a different frequency and a switching element connected to the signal source, or includes different frequencies The applied signal may be applied as an input signal.

Irradiating a signal generated according to an embodiment of the present invention toward the object, and receiving a response signal from the object (S200), at least one transmitting antenna and a plurality of receiving antennas respectively configured a sensor module And transmitting and receiving a signal using the same.

In addition, the step of irradiating the generated signal toward the object, and receiving a response signal from the object (S200), the transmitting and receiving antennas are integrally configured to transmit and receive signals using at least one sensor module included It may include a step.

In addition, the method according to an embodiment of the present invention may further include minimizing interference between signals transmitted and received through the signal separator of the sensor module. This step may be performed before, after, or after the irradiation of the signal according to S200 or the response signal, respectively.

₁)을 갖고, 각각의 수신 안테나와 송신 안테나 간의 이격 거리는 제 2 값(

₂)을 가지며, 제 1 값(

₁) 및 제 2 값(

₂) 각각은 센서 모듈에서 생성된 주파수에 기초하여 소정의 배수 형태로 결정될 수 있다. For example, the separation distance between the plurality of receiving antennas may be a first value (

₁ ), and the separation distance between each receive antenna and transmit antenna is a second value (

₂ ), the first value (

₁ ) and the second value (

₂ ) Each may be determined in a predetermined multiple form based on the frequency generated by the sensor module.

The motion recognition technology through the sensor module 1000 provided as an embodiment of the present invention may be applied to various smart ICT fields such as a 3D input device, a wearable device, an active game machine, a TV, an electronic product, a notebook computer, and a medical device. .

With regard to the method according to an embodiment of the present invention, the above description of the apparatus (eg, sensor module) may be applied. Therefore, with regard to the method, the description of the same contents as those of the above-described apparatus is omitted.

Meanwhile, the above-described method can be written as a program that can be executed in a computer, and can be implemented in a general-purpose digital computer which operates the program using a computer readable medium. In addition, the structure of the data used in the above-described method can be recorded on the computer-readable medium through various means. A recording medium for recording an executable computer program or code for performing various methods of the present invention should not be understood to include temporary objects, such as carrier waves or signals. The computer readable medium may include a storage medium such as a magnetic storage medium (eg, a ROM, a floppy disk, a hard disk, etc.), an optical reading medium (eg, a CD-ROM, a DVD, etc.).

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

1: object 1000: sensor module
1100: signal generator 1200: transceiver
1300: signal processor 1400: signal separator

Claims (17)

A sensor module using a plurality of different frequencies to recognize the motion of the object,
A signal generator which generates a signal having each of the plurality of different frequencies;
A transmitter / receiver that irradiates the generated signal toward the object and receives a response signal from the object; And
A signal processor configured to recognize an operation of the object based on the generated signal and the received response signal;
The motion of the object is recognized by estimating information according to the movement of the object by the signal processor,
The transceiver may be formed of any one of a monostatic structure and a bistatic structure,
The monostatic structure is arranged such that a plurality of transmit / receive antennas in which a transmit antenna and a receive antenna are integrally spaced apart from each other between transmit / receive antennas among the plurality of transmit / receive antennas by a predetermined distance,
The bistatic structure has a second value from the transmit antenna with respect to the transmit antenna.

_A plurality of receive antennas are arranged in a form spaced apart by ₂ ), and among the plurality of receive antennas, a first value between the adjacent receive antennas is

Sensor module, characterized in that spaced apart by ₁ ).
The method of claim 1,
The information according to the movement of the object includes at least one of micro-Doppler information, distance information, velocity information, and angle information,
The sensor module includes an interferometer radar sensor using two or more different frequencies, and the signal processor analyzes each transmitted and received frequency and compares the analyzed result with each other to recognize the motion of the object. Sensor module.
The method of claim 1,
In the signal generator, a signal having a selected frequency is obtained through a plurality of signal sources having different frequencies and a switching element connected to the signal source, or a signal including different frequencies is applied as an input signal. Sensor module.
delete delete The method of claim 1,
If the transceiver is formed in a bi-static structure, the sensor module further comprises a signal separation unit for minimizing the interference between the signals through the transceiver.
delete The method of claim 1,
Said first value (

₁ ) and the second value (

₂ ) is a sensor module, characterized in that determined in the form of a predetermined multiple on the basis of the frequency generated in the sensor module.
A method for recognizing a motion of an object with a sensor module using a plurality of different frequencies,
Generating a signal having each of the plurality of different frequencies;
Irradiating the generated signal toward the object and receiving a response signal from the object; And
Recognizing a motion of the object based on the generated signal and the received response signal,
The motion of the object is recognized by estimating information according to the movement of the object,
Irradiating the generated signal toward the object and receiving a response signal from the object includes transmitting and receiving a signal using a transceiver;
The transceiver may be formed of any one of a monostatic structure and a bistatic structure, wherein the monostatic structure includes a plurality of transmit and receive antennas in which a transmit antenna and a receive antenna are integrated. Among the antennas, the antennas are arranged to be spaced apart from each other by a predetermined spacing distance from each other, and the bistatic structure has a second value (i.e.

_A plurality of receive antennas are arranged in a form spaced apart by ₂ ), and among the plurality of receive antennas, a first value between the adjacent receive antennas is

₁ ) A sensor module using a plurality of different frequencies, characterized in that spaced apart by a method for recognizing the motion of the object.
The method of claim 9,
The information according to the movement of the object includes at least one of micro-Doppler information, distance information, velocity information, and angle information,
The sensor module includes an interferometer radar sensor using two or more different frequencies, and in the step of recognizing the operation, the signal processing unit of the sensor module analyzes each transmitted and received frequency and compares the analyzed result with each other. A method for recognizing a motion of an object with a sensor module using a plurality of different frequencies, characterized in that the motion of the object is recognized.
The method of claim 9,
The generating of the signal having each of the plurality of different frequencies may include obtaining a signal having a selected frequency through a plurality of signal sources having different frequencies and a switching element connected to the signal source, or a signal including different frequencies. A method for recognizing the motion of an object with a sensor module using a plurality of different frequencies, characterized in that it is applied as an input signal.
delete delete The method of claim 9,
If the transceiver is formed in a mono-static structure, further comprising the step of minimizing the interference between the signals transmitted and received through the signal separation unit of the sensor module to recognize the operation of the object by using a plurality of different frequencies of the sensor module How to.
delete The method of claim 9,
If the transceiver is formed of a bistatic structure, the first value (

₁ ) and the second value (

₂ ) A method for recognizing a motion of an object with a sensor module using a plurality of different frequencies, each of which is determined in a predetermined multiple shape based on the frequency generated by the sensor module.
A computer-readable recording medium having recorded thereon a program for implementing the method of claim 9.

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