Biological monitoring device, biological monitoring method, and biological monitoring system

Abstract

To provide a biological monitoring device and the like that enable a user to appropriately recognize a radio wave radiation range and radio wave directivity.SOLUTION: A biological monitoring device 10 comprises a radio wave radiation unit 33 including a transmission antenna for radiating a transmission wave and a receiving antenna for receiving a reflection wave of the transmission wave from a target, where at least one of the transmission antenna and the receiving antenna has a plurality of antennas. The biological monitoring device 10 comprises: a phase adjustment unit that by changing gain of at least one of the transmission wave and the reflection wave by controlling phases of the plurality of antennas, detects a reflection signal from the target; and a light source unit 32 for radiating visible light L or infrared light in a direction of a radio wave axis.SELECTED DRAWING: Figure 6A

Description

Technical Field

[0001] The present invention relates to a biological monitoring device, a biological monitoring method, and a biological monitoring system.

Background Art

[0002] Conventionally, a technique is known in which radio waves are irradiated onto a patient and reflected waves reflected from the surface of the patient are detected, thereby non-contact detecting body movements based on the patient's respiration, heartbeat, etc. By using radio waves, it is possible to perform non-contact measurement on the patient while the patient is wearing clothes, and there is an advantage that the burden on the patient during measurement can be reduced.

[0003] Here, unlike visible light, radio waves used for measuring a patient's biological information are not visible to the eye. Therefore, nurses, patients, etc. cannot visually grasp the irradiation direction and irradiation range of the radio waves. In such a situation, for example, when the installation position of the sensor is displaced, the irradiation direction of the radio waves is also displaced, and accordingly the measurable range is also displaced. Therefore, it is important to accurately grasp the irradiation direction and irradiation range of the radio waves.

[0004] As a technique for specifying the irradiation direction of radio waves, the following documents are disclosed. Patent Document 1 describes an antenna device in which a light irradiation unit irradiates visible light along the center line of a radiation beam region of radio waves that communicate with an in-vehicle ETC device of an automobile.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] In the conventional technology, an antenna device with a single directivity is used. In this case, it is only necessary to irradiate the front direction where the radio wave is most strongly irradiated with visible light. However, when using a phased array type antenna device, it is possible to adjust the directivity of the radio wave in an arbitrary direction. Therefore, simply irradiating visible light only in the front direction as in the conventional antenna device cannot allow the user to appropriately recognize the irradiation range of the radio wave, the scanning direction of the radio wave, etc.

[0007] Therefore, an object of the present invention is to provide a biological monitoring device, a biological monitoring method, and a biological monitoring system that can allow a user to appropriately recognize the irradiation range of a radio wave and the directivity of the radio wave in order to solve the above problems.

Means for Solving the Problems

[0008] The biological monitoring device according to the present invention includes a transmitting antenna that irradiates a transmitting wave, and a receiving antenna that receives a reflected wave from a target of the transmitting wave, and is a biological monitoring device in which at least one of the transmitting antenna or the receiving antenna has a plurality of antennas, a phase adjustment unit that detects a reflected signal from a target by changing the gain of at least one of the transmitting wave and the reflected wave in a specific direction by controlling the phases of the plurality of antennas, and a light source unit that irradiates visible light or infrared rays in the direction of the radio wave axis.

[0009] Another biological monitoring device according to the present invention includes a transmitting antenna that irradiates a transmitting wave, and a receiving antenna that receives a reflected wave from the target of the transmitting wave, and is a biological monitoring device in which at least one of the transmitting antenna or the receiving antenna has a plurality of antennas, a phase adjustment unit that changes the gain of at least one of the transmitting wave and the reflected wave in a specific direction by controlling the phases of the plurality of antennas, and a photographing unit that photographs the area irradiated with the radio wave. A display device that displays an image of the area photographed by the photographing unit; is provided.

[0010] The biological monitoring method according to the present invention is a biological monitoring method of a biological monitoring device including a transmission antenna that irradiates a transmission wave and a reception antenna that receives a reflected wave of the transmission wave, wherein at least one of the transmission antenna or the reception antenna has a plurality of antennas, a phase control step of detecting a reflected signal from a target by changing the gain of at least one of the transmission wave and the reflected wave in a specific direction by controlling the phases of the plurality of antennas; an irradiation step of irradiating visible light or infrared rays in the direction of the radio wave axis.

[0011] The biological monitoring system according to the present invention is the above biological monitoring device; a server that is connected to the biological monitoring device via a network and manages the biological information of the object transmitted from the monitoring device.

Advantages of the Invention

[0012] According to the present invention, by indicating the direction in which the gain of radio waves can be changed with visible light or the like, information regarding the directivity of radio waves that is not normally visible to the eye can be visualized.

Brief Description of the Drawings

[0013]

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Mode for Carrying Out the Invention

[0014] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0015] <First Embodiment> [Configuration Example of Biological Monitoring System 100] FIG. 1 is a diagram showing a schematic configuration of a biological monitoring system 100 according to the first embodiment. As shown in FIG. 1, the biological monitoring system 100 includes a station server 1, a bedside terminal 2, and a biological monitoring device 10. The station server 1 is installed, for example, in a nurse station. The bedside terminal 2 and the biological monitoring device 10 are installed, for example, around the bed in the hospital room. Note that the number of various devices installed in the nurse station and the number of various devices such as the biological monitoring device 10 installed in the hospital room are not limited to the numbers shown in FIG. 1.

[0016] The biological monitoring system 100 is a system used in a medical facility such as a hospital to provide nursing support for patients. The station server 1 and the bedside terminal 2 are connected to each other via a network N so as to be communicable. Examples of the network N include a WAN, a LAN, and the Internet. WAN is an abbreviation for Wide Area Network. LAN is an abbreviation for Local Area Network. Note that FIG. 1 shows an example in which the station server 1 and the bedside terminal 2 are connected by wireless communication. Examples of the wireless communication include a wireless LAN including Wi-Fi.

[0017] The station server 1 centrally manages the measurement data (biological information) of each patient collected by the bedside terminal 2. A display unit 1a connected to the station server 1 displays a monitoring screen for monitoring the biological information of a plurality of patients. Examples of the biological information include the respiratory rate, heart rate, body temperature, and SpO2. At the nurse station, the station server 1 can grasp the changes in the condition of each patient. The station server 1 may transmit the measurement data of each patient to a cloud server or the like connected via the network N.

[0018] In addition, an external HDD 4a, a UPS (uninterruptible power supply) 4b, and a printer 4c are respectively connected to the station server 1. HDD is the abbreviation of Hard Disk Drive. UPS is the abbreviation of Uninterruptible Power Supply. The external HDD 4a stores various data such as the biometric information of each patient managed in the station server 1. The UPS 4b incorporates a device for storing power such as a secondary battery. Even when the power supply from the outside is interrupted due to a power outage or the like, the UPS 4b supplies power at a set output for a certain period of time. The printer 4c prints measurement data on paper and prints various measurement data and the like displayed on the display unit 1a of the station server 1.

[0019] The bedside terminal 2 is installed at the bedside of each patient in the hospital room. The bedside terminal 2, for example, acquires the biometric information of the patient from the biometric monitoring device 10 and displays the measurement result according to the acquired biometric information. The bedside terminal 2 reads the IC card 5a to acquire the identification information of the medical staff. The bedside terminal 2 acquires the biometric information of the patient from a measuring instrument 5b compatible with HR Joint (registered trademark) such as a thermometer. HR is the abbreviation of Health Record. The bedside terminal 2 transmits the measurement data based on the acquired biometric information of the patient to the station server 1.

[0020] The biological monitoring device 10 includes a sensor device 3. The sensor device 3 is, for example, a radar using a frequency continuous modulation method (hereinafter referred to as the FMCW method) that linearly and periodically changes the frequency of the transmitted radio wave over time. FMCW is an abbreviation for Frequency Modulated Continuous Wave. The sensor device 3 detects the round-trip time of the radio wave between the patient, that is, the distance, based on the frequency of the beat signal caused by the frequency difference between the transmission signal of the continuously modulated transmission wave and the reception signal of the reflected wave. The sensor device 3 detects the direction of the patient based on the phases of the reception signals respectively detected by a plurality of reception antennas 340. According to the sensor device 3, a stationary patient can be detected, and when the patient is moving or vibrating, the movement or vibration can be detected. Also, since radio waves are used, the movement of the patient can be detected non-contact. In the sensor device 3 of the present embodiment, radio waves in a frequency band of 30 to 300 GHz with a wavelength of 1 to 10 mm are used.

[0021] [Configuration example of the block diagram of the sensor device 3] FIG. 2 is a block diagram of the sensor device 3 according to the first embodiment. The sensor device 3 includes a control unit 30, a storage unit 31, a light source unit 32, a radio wave irradiation unit 33, a reception unit 34, a signal processing unit 35, and a communication unit 36. The control unit 30, the storage unit 31, the light source unit 32, the radio wave irradiation unit 33, the reception unit 34, the signal processing unit 35, and the communication unit 36 are connected to each other via, for example, a bus 39 or the like. Note that the radio wave irradiation unit 33 is an example of a transmission unit.

[0022] The control unit 30 includes, for example, a processor such as a CPU and a memory. The CPU is an abbreviation for Central Processing Unit. The control unit 30 realizes various processes including a confirmation mode for confirming the irradiation range Wa of the radio wave Ws irradiated from the sensor device 3 by executing various programs stored in the storage unit 31 or the like. Note that the control unit 30 may include an electronic circuit such as an ASIC or an FPGA. The ASIC is an abbreviation for Application Specific Integrated Circuit. The FPGA is an abbreviation for Field Programmable Gate Array.

[0023] The storage unit 31 includes, for example, any storage module such as an HDD, an SSD, a ROM, and a RAM. The HDD is an abbreviation for Hard Disk Drive. The SSD is an abbreviation for Solid State Drive. The ROM is an abbreviation for Read-Only Memory. The RAM is an abbreviation for Random Access Memory. The storage unit 31 stores, for example, a system program, an application program, and various information received by the communication unit 36.

[0024] The light source unit 32 is, for example, an LED, an LD, a fluorescent lamp, an incandescent bulb, or the like. The LED is an abbreviation for Light Emitting Diode, and the LD is an abbreviation for Laser Diode. When the confirmation mode is selected, the light source unit 32 irradiates visible light L toward a measurable region where the biological information of the object (target) S can be measured based on the control of the control unit 30. Specifically, the light source unit 32 irradiates visible light L in a direction that coincides with the main radiation direction in which the radio wave Ws is most strongly irradiated from the radio wave irradiation unit 33 and the direction adjusted so that the gain of the received signal is maximized at the receiving unit 34. The main radiation direction and the direction in which the gain of the radio wave Ws is maximized coincide with the direction of the radio wave axis D (see FIG. 3B) described later.

[0025] In this embodiment, the direction in which the gain of the radio wave Ws can be changed is visualized based on the projection shape of the visible light L projected onto the bed 6. As the projection shape, various patterns such as an ellipse and a triangle can be adopted as will be described later. As the projection means for realizing the pattern projection, the visible light L emitted from the light source unit 32 can be projected using a projection lens and a diffraction grating. Further, as the projection means, an aperture plate or a slit corresponding to the projection shape may be used, or a plurality of LEDs or the like may be arranged according to the projection shape. As long as the pattern can be projected, the projection means is not limited to the above-described examples. Details of the projection shape of the visible light L will be described later. Although an example in which the light source unit 32 is mounted in the housing constituting the sensor device 3 has been described, the light source unit 32 may be configured separately from the housing.

[0026] The radio wave irradiation unit 33 irradiates, for example, a radio wave Ws having a predetermined frequency toward an object S such as a patient lying on the bed 6. The receiving unit 34 receives the reflected wave that is irradiated from the radio wave irradiation unit 33 and reflected by the surface of the object S. The signal processing unit 35 calculates the distance to the object S, the arrival angle of the reflected wave with respect to the sensor device 3, etc. based on the reflected wave received by the receiving unit 34. Details of the radio wave irradiation unit 33, the receiving unit 34, and the signal processing unit 35 will be described later.

[0027] The communication unit 36 includes, for example, a communication module including a NIC, a receiver, a transmitter, and the like. The communication unit 36 communicates various information with other devices such as the bedside terminal 2 via a network. NIC is an abbreviation for Network Interface Card.

[0028] [Configuration Example of Radio Wave Irradiation Unit 33 and Receiving Unit 34 of Sensor Device 3] FIG. 3A shows an example of the configuration mainly of the radio wave irradiation unit 33 and the receiving unit 34 of the sensor device 3 according to the first embodiment. FIG. 3B is a diagram showing an example when the phase of the transmission signal is controlled by the first phase adjustment unit 332 according to the first embodiment to change the directivity. In FIG. 3B, the vertical axis represents the power normalized with the maximum radiation direction as 0 dB, and the horizontal axis represents the angle.

[0029] As shown in FIG. 3A, the radio wave irradiation unit 33 includes a signal generator 330, a first phase adjuster 332, a plurality of transmission antennas 334, and a 90-degree phase shifter 336. In the present embodiment, as an example, two transmission antennas 334 are provided, and two first phase adjusters 332 are provided corresponding to the transmission antennas 334, but the number thereof is not limited thereto. Hereinafter, for the sake of convenience, the configuration of one transmission antenna 334 and one first phase adjuster 332 will be described.

[0030] The signal generator 330 generates a transmission signal transmitted as radio wave Ws from the transmission antenna 334 according to the control by the sensor control unit 21. For example, the signal generator 330 generates a chirp signal whose frequency linearly and periodically changes with time as the transmission signal. The amount of change in frequency per unit time in the chirp signal is determined according to the distance to the object S and is determined according to the control signal from the sensor control unit 21.

[0031] The first phase adjuster 332 executes a phase control step of controlling the amplitude and phase of the transmission signal output from the signal generator 330. The first phase adjuster 332 adjusts the transmission signal so that the gain becomes maximum in a specific direction by executing the phase control step. The first phase adjuster 332 continuously changes within a predetermined range the direction in which the maximum gain of the radio wave Ws, which is the transmission signal, can be changed. In the present embodiment, the direction in which the gain of the radio wave Ws can be changed, that is, the direction in which the directivity can be controlled, is called the first direction D1 (see FIG. 3B).

[0032] The plurality of transmission antennas 334 are provided for each first phase adjuster 332 and are regularly arranged on the same plane. The plurality of transmission antennas 334 transmit radio wave Ws, which is a transmission signal whose gain is adjusted by the first phase adjuster 332, in a specific direction. In the present embodiment, as will be described later, the main radiation direction of the radio wave Ws in each transmission antenna 334 is defined as the radio wave axis D. The radio wave Ws transmitted from the transmission antenna 334 is irradiated onto an object S such as a patient and reflected on the surface of the object S. Further, the transmission antenna 334 scans along the radio wave Ws in the first direction D1 on the upper surface of the mat 61 of the bed 6. Note that an amplifier (not shown) for amplifying the transmission signal may be provided between the signal generator 330 and the transmission antenna 334.

[0033] The receiving unit 34 includes a plurality of receiving antennas 340, a biological signal generation unit 342 corresponding to the plurality of receiving antennas 340, and a second phase adjuster 344. In the present embodiment, as an example, four receiving antennas 340 are provided, and four biological signal generation units 342 are provided corresponding to the receiving antennas 340, but the number is not limited thereto. Hereinafter, for convenience, the configuration of one receiving antenna 340 and one biological signal generation unit 342 will be described.

[0034] The plurality of receiving antennas 340 are regularly arranged, for example, in a matrix pattern on the same plane. The receiving antenna 340 receives the reflected wave Wr reflected on the surface of the object S. The receiving antenna 340 outputs an electrical signal corresponding to the received reflected wave Wr. In the present embodiment, MIMO (Multiple Input Multiple Output) is used to pseudo-increase the number of receiving antennas 340 by receiving the radio wave transmitted from the transmission antenna 334 with the plurality of receiving antennas 340. MIMO is an abbreviation for Multiple Input Multiple Output. By using MIMO, virtual receiving antennas more than the actual number of receiving antennas 340 can be created by utilizing the phase difference between the plurality of transmission and receiving antennas.

[0035] The biological signal generation unit 342 includes an amplifier 342a, a first mixer 342b, a first LPF (low-pass filter) 342c, and a first ADC (analog-to-digital converter) 342d. The biological signal generation unit 342 further includes a second mixer 342e, a second LPF 342f, and a second ADC 342g. The amplifier 342a amplifies the reflected wave Wr received by the receiving antenna 340 and outputs it to each of the first mixer 342b and the second mixer 342e.

[0036] The first mixer 342b mixes the received signal received by the receiving antenna 340 and the transmission signal generated by the signal generator 330 of the radio wave irradiation unit 33. The first mixer 342b generates a beat signal corresponding to the difference between the received signal and the transmission signal by mixing. The first LPF 342c frequency-converts the beat signal to generate an I signal. The first ADC 342d converts the analog I signal output from the first LPF 342c into a digital I signal and outputs it to the second phase adjustment unit 344.

[0037] The second mixer 342e mixes the received signal received by the receiving antenna 340 and the transmission signal generated by the signal generator 330 of the radio wave irradiation unit 33. This transmission signal is a signal whose phase has been rotated by 90° by the 90-degree phase shifter 336. The second mixer 342e generates a beat signal corresponding to the difference between the received signal and the transmission signal by mixing. The second LPF 342f frequency-converts the beat signal to generate a Q signal. The second ADC 342g converts the analog Q signal output from the second LPF 342f into a digital Q signal and outputs it to the second phase adjustment unit 344.

[0038] The received signal corresponds to a signal obtained by delaying the transmission signal by a time corresponding to the distance to the object S. The transmission signal is a chirp signal whose frequency changes linearly. Therefore, the received signal is a signal whose frequency has changed from the transmission signal with a change width corresponding to the distance to the object S. The frequency of the beat signal is the round-trip time to the object S, that is, a magnitude corresponding to the distance to the object S. By continuously calculating the distance to the object S, body movements such as the chest of a patient can be observed, for example.

[0039] The second phase adjuster 344 executes a phase control step of controlling the amplitude and phase of the received signal output from the first mixer 342b or the like. By executing the phase control step, the second phase adjuster 344 adjusts so that the gain of the received signal reflected from the object S in a specific direction becomes maximum, and continuously changes the reception of the reflected wave Wr as the received signal within the range of the first direction D1. As a result, the second phase adjuster 344 can obtain a received signal with the maximum gain in a specific direction by the amplitude and phase of the received signal in the specific direction reinforcing each other. On the other hand, the received signals in other directions are attenuated because the amplitude and phase are shifted. Specifically, as shown in FIG. 3B, the second phase adjuster 344 changes the irradiation direction with the maximum gain of the radio wave Ws from the central angle 0° to the first direction D1 with the central angle 20° by controlling the phase of the received signal. In the present embodiment, the direction in which the received signal has the maximum gain when the central angle is 0° is called the radio wave axis D. In other words, the radio wave axis D is the main radiation direction (front direction) of the radio wave at each receiving antenna 340, and corresponds to the central axis in the entire radio wave radiation range that is not phase-controlled.

[0040] The signal processing unit 35 performs predetermined processing on the signal output from the second phase adjuster 344, and calculates the distance to the object S, the arrival angle of the reflected wave Wr reflected by the object S to the sensor device 3, and the like. For the predetermined processing, for example, a known technique such as fast Fourier transform can be applied.

[0041] In addition, in FIG. 3A, an example in which a plurality of transmission antennas 334 and reception antennas 340 are configured has been described, but the present invention is not limited to this. It is sufficient that either one of the transmission antenna 334 and the reception antenna 340 is configured by a plurality. In this case, the number of the first phase adjuster 332 and the second phase adjuster 344 is configured according to the number of the transmission antenna 334 and the reception antenna 340. This is because the gain of the radio wave Ws can be changed even with only one of the transmission side or the reception side configurations. Further, when neither of them is configured by a plurality, the phase adjuster on either side may be omitted.

[0042] [Installation Example of the Biological Monitoring Device 10] Next, the case of installing the biological monitoring device 10 (sensor device 3) in a hospital room will be described. The installation of the biological monitoring device 10 may be carried out with the object S such as a patient lying on the bed 6, or it may be carried out with the object S not on the bed 6. Hereinafter, the case of installing the biological monitoring device 10 with the object S lying on the bed 6 will be described. The biological monitoring device 10 is attached to the sensor attachment jig 7 so that the center of the radio wave irradiation range Wa capable of transmitting the radio wave Ws irradiated from the radio wave irradiation unit 33 coincides with the center of the irradiation range of the visible light L irradiated from the light source unit 32.

[0043] FIG. 4 shows an example of the schematic configuration of the biological monitoring device 10 installed around the bed 6 using the sensor attachment jig 7. The bed 6 is, for example, a bed for infants, but is not particularly limited to a bed for infants as long as it is possible to measure the biological information of a patient or the like in the lying posture. The bed 6 has a floor board 60, support columns 62, and a frame 64. A mat 61 on which an object S such as an infant lies horizontally is laid on the floor board 60. The mat 61 is sized considering the movement of the object S due to turning over or the like, and is, for example, rectangular in plan view. The support columns 62 are composed of four support columns extending in the vertical direction and support the four corners of the floor board 60 respectively. The frame 64 is erected so as to surround the periphery of the mat 61 to prevent the object S from falling off the bed 6. Note that part of the frame 64 is omitted from the illustration for easy viewing of the object S and the like.

[0044] The sensor mounting jig 7 includes a support column 70, a fixing portion 72, an arm 74, and a mounting mechanism 76 which is an example of an adjustment mechanism. The support column 70 is a rod-shaped member extending in the vertical direction. The fixing portion 72 is attached to the lower end of the support column 70 and has, for example, casters or the like. The arm 74 is attached to the upper end side of the support column 70 and is configured to be movable horizontally or vertically with respect to the bed 6 via, for example, a shaft. The mounting mechanism 76 is provided at the tip of the arm 74 and rotatably holds the sensor device 3. Also, the mounting mechanism 76 may be configured to be rotatable with respect to the arm 74. With such a configuration, the height, the position in the left-right direction, the angle, etc. of the sensor device 3 with respect to the bed 6 can be adjusted. Note that the arm 74 and the mounting mechanism 76 may be provided with scales indicating height and angle. In this case, after adjusting the height and angle of the sensor device 3, the adjusted scale can be recorded. Thereby, even when the position of the biological monitoring device 10 including the sensor device 3 is displaced due to an unexpected situation, the sensor device 3 can be immediately returned to its original position by referring to the recorded scale.

[0045] [Example of Adjusting the Installation Location of the Sensor Device 3] Next, the procedure for checking and adjusting the irradiation range Wa of the radio wave Ws on the bed 6 in the biological monitoring device 10 according to the first embodiment will be described.

[0046] FIG. 5 is a flowchart showing an example of the procedure for checking and adjusting the irradiation range Wa of the radio wave Ws on the bed 6. In the following, the irradiation range Wa of the radio wave Ws is referred to as the radio wave irradiation range Wa (see FIG. 6A). Also, in the present embodiment, when the object S lies horizontally on the mat 61 of the bed 6, the head side is called the head side and the foot side is called the foot side.

[0047] First, select the installation position of the biological monitoring device 10 so that there is no obstacle between the object S such as a patient and the sensor device 3 (step S1). As shown in FIG. 4, the biological monitoring device 10 is installed, for example, obliquely above the head side of the bed 6. In the present embodiment, the installation position of the biological monitoring device 10 is selected so that the radio wave irradiation range Wa by the sensor device 3 is within the upper surface of the mat 61 of the bed 6. Note that the installation position of the biological monitoring device 10 is not limited to the position shown in FIG. 4, and it may be on the foot side of the bed 6 or on the left or right side of the bed 6.

[0048] Next, attach the biological monitoring device 10 to the attachment mechanism 76 of the sensor attachment jig 7. After attaching the biological monitoring device 10 to the sensor attachment jig 7, adjust the biological monitoring device 10 to the previously selected installation position (step S2). For example, the height, direction, etc. of the biological monitoring device 10 may be adjusted by moving the arm 74 in the vertical direction, horizontal direction, etc. Further, the angle, etc. of the biological monitoring device 10 may be adjusted by rotating the biological monitoring device 10 with respect to the attachment mechanism 76. Although an example of attaching the biological monitoring device 10 to the sensor attachment jig 7 has been described, the biological monitoring device 10 may be attached to the wall of the room using an attachment mechanism or the like.

[0049] Next, when the confirmation mode is selected by the user, the light source unit 32 of the sensor device 3 irradiates the bed 6 side with visible light L (step S3). Step S3 corresponds to an irradiation step. Specifically, the direction in which the visible light L is directed is a direction along the radio wave axis D, which is the main radiation direction of the radio wave Ws in each transmission antenna 334 or the like. The sensor device 3 may be provided with a button or a switch for starting the confirmation mode for confirming the radio wave irradiation range Wa. When a button or the like is selected by a user such as a doctor or a nurse, the sensor device 3 irradiates the bed 6 side with visible light L from the light source unit 32 by executing the confirmation mode.

[0050] Next, the user determines whether the radio wave irradiation range Wa is at an appropriate position based on the projected shape of the visible light L irradiated onto the bed 6. In the present embodiment, the radio wave irradiation unit 33 that irradiates the radio wave Ws and the light source unit 32 that irradiates the visible light L are mounted in the same housing, and the irradiation direction of the radio wave Ws and the irradiation direction of the visible light L are substantially the same. Therefore, by checking the orientation, projection position, etc. of the projected shape with respect to the measurable area on the bed 6 in the visible light L irradiated from the light source unit 32, it is possible to determine whether the radio wave irradiation range Wa is at an appropriate position, that is, whether the sensor device 3 is installed at an appropriate position. Hereinafter, the case where the sensor device 3 is installed at an appropriate position and the case where the sensor device 3 is not installed at an appropriate position will be described.

[0051] FIG. 6A shows the visible light L irradiated from the sensor device 3 installed at an appropriate position onto the mat 61 of the bed 6. Here, the sensor device 3 can continuously change the direction of the maximum gain of the radio wave Ws from the head side to the foot side in the first direction D1 on the mat 61 of the bed 6 by controlling the phase of the irradiated radio wave Ws. Further, the sensor device 3 can continuously change the direction of the maximum gain of the reflected wave Wr within the range of the upper surface of the mat 61 by controlling the phase of the received reflected wave Wr. The radio wave irradiation range Wa is set to a range that encloses the measurable area provided substantially over the entire upper surface of the mat 61 so that the biological information of the object S in the lying posture on the mat 61 can be accurately and reliably measured. Specifically, the radio wave irradiation range Wa is set to a rectangular range in a plan view that is slightly smaller than the mat 61 in consideration of the range in which the object S moves on the mat 61 and disturbances caused by reflection objects outside the bed 6.

[0052] As shown in FIG. 6A, the visible light L irradiated from the light source unit 32 is projected onto the upper surface of the mat 61 of the bed 6. The projected shape of the visible light L includes, for example, an elliptical portion La having an elliptical shape in plan view. In the present embodiment, the elliptical portion La has a major axis Ls extending in the longitudinal direction. The major axis Ls of the elliptical portion La extends parallel or substantially parallel to the first direction D1, which is a direction in which the gain of the radio wave Ws can be changed. That is, the major axis Ls of the elliptical portion La is set to indicate a direction in which the directivity of the radio wave Ws can be controlled by the second phase adjuster 344 or the like. Therefore, the user can recognize the directivity of the radio wave Ws by checking the direction of the major axis Ls of the elliptical portion La of the projected shape.

[0053] Further, the user can check whether the radio wave irradiation range Wa is displaced from the upper surface of the mat 61 by determining whether the following two conditions are satisfied. The first condition is whether the major axis Ls of the elliptical portion La of the projected shape of the visible light L is parallel to the central axis 6s of the bed 6. The second condition is whether the center Lo of the projected shape of the visible light L substantially coincides with the center 6o of the bed 6. Note that the user may visually recognize the central axis 6s and the center 6o of the bed 6, or may mark the mat 61 or the like.

[0054] In the example shown in FIG. 6A, the first condition and the second condition are satisfied. Therefore, the user determines that the sensor device 3 is attached at an appropriate position and the radio wave irradiation range Wa is at an appropriate position. When the confirmation of the radio wave irradiation range Wa is completed, the process proceeds to the step of acquiring the biological information of the object S by the sensor device 3.

[0055] On the other hand, even when the sensor device 3 is attached to the selected position, the sensor device 3 may be tilted due to an unexpected situation. Further, there may be a case where the sensor device 3 is displaced from the selected position at the first stage when the sensor device 3 is attached to the sensor attachment jig 7. FIG. 6B shows the visible light L irradiated from the sensor device 3 not installed at an appropriate position onto the mat 61 of the bed 6. FIG. 6B shows a case where the sensor device 3 is tilted with respect to the bed 6.

[0056] As shown in FIG. 6B, the center Lo of the elliptical portion La of the projected shape of the visible light L irradiated from the light source unit 32 is displaced from the center 6o of the bed 6. The major axis Ls of the elliptical portion La of the projected shape of the visible light L is also inclined with respect to the central axis 6s of the bed 6. As a result, the radio wave irradiation range Wa by the sensor device 3 is also inclined with respect to the upper surface of the mat 61, and a part of the radio wave irradiation range Wa protrudes outward from the upper surface of the mat 61.

[0057] In this case, the user determines that the first condition and the second condition are not satisfied and the sensor device 3 is not attached at an appropriate position. When the installation position of the sensor device 3 is displaced, the radio wave irradiation range Wa is not at an appropriate position either. Therefore, the user moves the arm 74 in the vertical and horizontal directions to align the center Lo of the projected shape of the visible light L with the center 6o of the bed 6. Thereby, the height, direction, left - right position, etc. of the sensor device 3 can be adjusted (step S4). Further, the user rotates the sensor device 3 with respect to the attachment mechanism 76 or the like to make the major axis Ls of the projected shape of the visible light L parallel to the central axis 6s of the bed 6. Thereby, the angle etc. of the sensor device 3 can be adjusted (step S5). In this way, by installing the sensor device 3 at an appropriate position from the projected shape etc. of the visible light L irradiated on the bed 6, the radio wave irradiation range Wa can also be set at an appropriate position. Note that when the radio wave irradiation unit 33 and the light source unit 32 are separately attached, the radio wave irradiation range Wa may be set at an appropriate position by adjusting the position of at least one of the radio wave irradiation unit 33 and the light source unit 32. Note that in FIG. 6A etc., the projected shape of the visible light L irradiated from the light source unit 32 is taken as the elliptical portion La, but it is not limited to this projected shape.

[0058] (Another pattern 1 of the projected shape) FIG. 7A shows another pattern 1 of the projected shape of the visible light L. As shown in FIG. 7A, the projected shape of the visible light L includes, for example, a circular portion Lb that is circular in plan view and a linear portion Lc that is linear in plan view. The circular portion Lb is located at the center Lo of the projected shape of the visible light L and substantially coincides with the approximate center of the radio wave irradiation range Wa. The linear portion Lc extends parallel or substantially parallel to a first direction D1, which is a direction in which the gain of the radio wave Ws can be changed. Thereby, the user can visually recognize the directivity of the radio wave Ws by checking the extending direction of the linear portion Lc of the visible light L.

[0059] (Other pattern 2 of the projected shape) FIG. 7B shows another pattern 2 of the projected shape of the visible light L. As shown in FIG. 7B, the projected shape of the visible light L includes, for example, a triangular portion Ld that is triangular in plan view. The midpoint of the side Ld1 of the triangular portion Ld substantially coincides with the approximate center of the radio wave irradiation range Wa. Further, the triangular portion Ld is configured in a tapered shape in which the width gradually becomes narrower from the side Ld1 toward the foot side of the mat 61, that is, in the first direction D1, which is a direction in which the gain of the radio wave Ws can be changed. Thereby, the user can visually recognize the directivity of the radio wave Ws by checking the tapered direction of the projected shape of the visible light L.

[0060] In the above-described embodiment, the scanning direction of the radio wave Ws is only the first direction D1 from the head side to the foot side of the bed 6, but it is not limited thereto. For example, the directions in which the gain of the radio wave Ws can be changed may be two directions. Specifically, the directions in which the gain of the radio wave Ws can be changed may be two directions, namely, the first direction D1 and a second direction D2 orthogonal to the first direction D1. The second direction D2 is, for example, the direction from the left side to the right side of the bed 6 shown in FIG. 6A.

[0061] (Other pattern 3 of the projected shape) FIG. 7C shows another pattern 3 of the projected shape of the visible light L. As shown in FIG. 7C, the projected shape of the visible light L includes, for example, a first elliptical portion La having an elliptical shape in plan view and a second elliptical portion Le having an elliptical shape in plan view. The major axis Lsa of the first elliptical portion La extends parallel or substantially parallel to the first direction D1. The major axis Lsb of the second elliptical portion Le extends parallel or substantially parallel to the second direction D2. By checking the directions of the first elliptical portion La and the second elliptical portion Le of the visible light L, the user can visually recognize the directivity of the radio wave Ws.

[0062] (Another pattern 4 of the projected shape) FIG. 7D shows another pattern 4 of the projected shape of the visible light L. As shown in FIG. 7D, the projected shape of the visible light L includes, for example, a circular portion Lb having a circular shape in plan view, a first linear portion Lc having a linear shape in plan view, and a second linear portion Lf having a linear shape in plan view. The circular portion Lb is located at the center Lo of the projected shape of the visible light L and substantially coincides with the approximate center of the radio wave irradiation range Wa. The first linear portion Lc extends parallel or substantially parallel to the first direction D1. The second linear portion Lf extends parallel or substantially parallel to the second direction D2. By checking the directions of the first linear portion Lc and the second linear portion Lf, the user can visually recognize the directivity of the radio wave Ws.

[0063] (Another pattern 5 of the projected shape) FIG. 7E shows another pattern 5 of the projected shape of the visible light L. As shown in FIG. 7E, the projected shape of the visible light L includes, for example, a first triangular portion Ld having a triangular shape in plan view and a second triangular portion Lg having a triangular shape in plan view. The midpoint of the side Ld1 of the first triangular portion Ld substantially coincides with the center of the radio wave irradiation range Wa. Further, the first triangular portion Ld is configured in a tapered shape in which the width gradually narrows from the side Ld1 toward the foot side of the mat 61, that is, in the first direction D1. The midpoint of the side Lg1 of the second triangular portion Lg substantially coincides with the center of the radio wave irradiation range Wa. Further, the second triangular portion Lg is configured in a tapered shape in which the width gradually narrows from the side Lg1 from the left side to the right side of the mat 61, that is, in the second direction D2. By checking the directions of the first triangular portion Ld and the second triangular portion Lg, the user can visually recognize the directivity of the radio wave Ws.

[0064] According to the first embodiment, the major axis Ls of the projected shape of the visible light L irradiated from the light source unit 32 is aligned with the first direction D1, which is a direction in which the gain of the radio wave Ws can be changed by the first phase adjuster 332 and the second phase adjuster 344. As a result, information regarding the directivity of the radio wave Ws, which is normally invisible to the naked eye, can be visualized. By checking the direction in which the major axis Ls of the projected shape of the visible light L extends, the user can grasp in which direction the radio wave Ws is scanned, in which range the radio wave Ws can be received, and where the radio wave irradiation range Wa is located. Further, when the projected shape of the visible light L deviates outward from the upper surface of the mat 61 of the bed 6 or is displaced from the center 6o of the upper surface of the mat 61, the user can determine that the installation position of the biological monitoring device 10 is not appropriate. In these cases, the user can adjust the position of the biological monitoring device 10 to an optimal position by adjusting the arm 74, the mounting mechanism 76, etc. As a result, the biological information of the object S can be measured accurately and appropriately.

[0065] [First Modification of the First Embodiment] In the first modification, the visible light L is irradiated from the light source unit 32 onto the upper surface of the mat 61, and the radio wave irradiation range Wa is visualized by the projected shape of the visible light L projected on the mat 61. In the first modification, the description will be centered on the differences from the first embodiment, and the same reference numerals will be given to the parts common to the first embodiment and the detailed description will be omitted.

[0066] FIG. 8 shows the visible light L irradiated from the sensor device 3 installed at an appropriate position according to the first modification of the first embodiment onto the mat 61 of the bed 6. As shown in FIG. 8, the light source unit 32 irradiates the visible light L including a shape indicating the entire range in which the radio wave Ws, which is a transmission wave, can be transmitted (scanned) by changing the gain by the first phase adjuster 332. The light source unit 32 irradiates visible light or infrared light including a shape indicating the entire range in which the reflected wave Wr can be received by changing the gain by the second phase adjuster 344.

[0067] The visible light L irradiated from the light source unit 32 is projected onto the upper surface of the mat 61 of the bed 6. The projected shape of the visible light L includes, for example, a plurality of dots Lp arranged in a matrix shape and is configured to partition the radio wave irradiation range Wa. That is, at least the dots Lp arranged on the outermost periphery are irradiated so as to define the boundary of the radio wave irradiation range Wa. Thereby, the radio wave irradiation range Wa can be visualized by the projected shape projected by the visible light L. Further, the region partitioned by the dots Lp is rectangular in plan view, and is configured such that its longitudinal direction substantially coincides with the first direction D1 which is the scanning direction of the radio wave Ws. Therefore, the user can recognize in which direction the radio wave Ws is scanned and in which range the radio wave Ws can be received by checking the longitudinal direction of the projected shape of the visible light L. Also, it is possible to determine whether the radio wave irradiation range Wa coincides with the measurable region on the bed 6.

[0068] In the above-described example, the dots Lp are circular in plan view, but the present invention is not limited to this. For example, the shape of the dots Lp may be rectangular or the like. Also, the arrangement pattern of the dots Lp is not limited to a matrix shape, and other arrangement patterns may be used as long as the radio wave irradiation range Wa can be defined.

[0069] [Second Modification of the First Embodiment] In the second modification according to the first embodiment, the radio wave irradiation range Wa of the sensor device 3 is recognized by the reflected wave Wr reflected by the corner cube C installed on the bed 6. In the second modification, the description will be centered on the differences from the first embodiment, and the same reference numerals will be given to the parts common to the first embodiment and the detailed description will be omitted.

[0070] FIG. 9 shows an example of the schematic configuration of the biological monitoring device 10 installed around the bed 6 according to the second modification of the first embodiment. FIG. 10 is a diagram showing an example of the positional relationship between the biological monitoring device 10 installed around the bed 6 and the corner cubes C1 to C4 installed on the bed 6.

[0071] The biological monitoring device 10 includes a sensor device 3, a plurality of corner cubes C, and a terminal device 8A. The sensor device 3 is attached to a sensor attachment jig 7 and installed around the bed 6. The sensor device 3 is installed, for example, on the head side of the bed 6 and obliquely above the bed 6. When the confirmation mode is executed, the light source unit 32 of the sensor device 3 irradiates visible light L toward the bed 6 side.

[0072] The plurality of corner cubes C includes, for example, four corner cubes C1 to C4. The four corner cubes C1 to C4 are respectively installed at four corner portions on the upper surface of the mat 61 of the bed 6. The corner cubes C1 to C4 convert the visible light L irradiated from the light source unit 32 of the sensor device 3, for example, by 180° and reflect it. The area surrounded by the corner cubes C1 to C4 on the upper surface of the mat 61 indicates a measurable range in which the biological information of the object S in the lying posture can be measured on the mat 61.

[0073] The terminal device 8A is installed at a position adjacent to the sensor device 3. The terminal device 8A may be attached to, for example, the sensor attachment jig 7 or another jig. The terminal device 8A is a device having a photographing function and a display function, and is, for example, a smartphone, a tablet, or the like. The terminal device 8A photographs the reflected waves irradiated from the sensor device 3 and reflected by the plurality of corner cubes C1 to C4, and displays the image obtained by the photographing on the screen. Note that the terminal device 8A is an example of a display device.

[0074] As shown in FIGS. 9 and 10, the terminal device 8A is installed at substantially the same height as the sensor device 3 and at substantially the same angle with respect to the bed 6. Therefore, in the present embodiment, the range of the image photographed by the terminal device 8A substantially coincides with the radio wave irradiation range Wa by the sensor device 3. Therefore, by checking whether the corner cubes C1 to C4 on the upper surface of the mat 61 are shown in the image photographed by the terminal device 8A, the radio wave irradiation range Wa can be pseudo-recognized.

[0075] Note that, instead of the corner cube C, a line tape with markers may be used. The line tape is attached around an object S such as a patient lying on the bed 6. Thereby, even when a part of the line tape is shielded, the markers attached to the line tape can be detected.

[0076] [Configuration example of the block diagram of the terminal device 8A] FIG. 11 is a block diagram of a terminal device 8A according to a second modification of the first embodiment. The terminal device 8A includes a control unit 80, a storage unit 81, an operation unit 82, a display unit 83, a photographing unit 84, and a communication unit 86. The control unit 80, the storage unit 81, the operation unit 82, the display unit 83, the photographing unit 84, and the communication unit 86 are connected to each other via, for example, a bus 89 or the like.

[0077] The control unit 80 includes, for example, a processor such as a CPU and a memory. The control unit 80 realizes various processes including a confirmation mode for confirming the installation position of the sensor device 3 by executing various programs stored in the storage unit 81 or the like. Note that the control unit 80 may include an electronic circuit such as an ASIC or an FPGA.

[0078] The storage unit 81 includes, for example, any storage module such as an HDD, an SSD, a ROM, and a RAM. The storage unit 81 stores, for example, a system program, an application program, and various information received by the communication unit 86.

[0079] The operation unit 82 receives various input operations from the user, converts the received input operations into electrical signals, and outputs them to the processing unit. The operation unit 82 includes, for example, a touch panel integrally combined with the display unit 83 and operation means such as switches and buttons. Note that the operation unit 82 may be, for example, a user interface that receives voice input such as a microphone.

[0080] The display unit 83 displays, for example, an image captured by the imaging unit 84 and a GUI or the like for receiving various input operations by the user. The display is, for example, a display device such as a liquid crystal display or an organic EL display.

[0081] The imaging unit 84 is an optical camera and includes, for example, an imaging element such as a CCD image sensor or a CMOS image sensor. CCD is an abbreviation for Charge Coupled Device. CMOS is an abbreviation for Complementary Metal Oxide Semiconductor. The imaging unit 84 performs an overhead shot of the bed 6 side and outputs the image obtained by the shot to the control unit 80. As shown in FIG. 12A described later, the image mainly includes the entire upper surface of the mat 61 of the bed 6.

[0082] The communication unit 86 includes, for example, a NIC and a communication module including a receiver and a transmitter. The communication unit 86 may communicate various information with the sensor device 3 or the like via a network.

[0083] [Operation example of the biological monitoring device 10] Next, the procedure for checking and adjusting the radio wave irradiation range Wa on the bed 6 in the biological monitoring device 10 according to the second modification of the first embodiment will be described.

[0084] FIG. 12A shows an example of an image displayed on the display unit 83 of the terminal device 8A when the biological monitoring device 10 is installed at an appropriate position. FIG. 12B shows an example of an image displayed on the display unit 83 of the terminal device 8A when the biological monitoring device 10 is not installed at an appropriate position.

[0085] In the present embodiment, when the confirmation mode is selected by the user, the sensor device 3 and the terminal device 8A cooperate to execute the confirmation mode. The selection means such as a button for selecting the confirmation mode may be provided on either the sensor device 3 or the terminal device 8A, or on both.

[0086] The control unit 30 of the sensor device 3 irradiates visible light L from the light source unit 32 toward the bed 6 when the confirmation mode is executed. The visible light L irradiated from the light source unit 32 is projected onto the upper surface of the mat 61 of the bed 6. As shown in FIG. 9, a part of the visible light L projected onto the mat 61 is reflected by the corner cubes C1 to C4 installed at four locations on the mat 61.

[0087] When the confirmation mode is executed, the imaging unit 84 of the terminal device 8A performs an overhead shot of the bed 6 side. The imaging mode may be a video or a still image. On the screen of the display unit 83, the reflected waves reflected by the corner cube C on the mat 61 of the bed 6 are displayed. For example, as shown in FIG. 12A, when the installation position of the sensor device 3 is appropriate, all four corner cubes C1 to C4 are displayed on the screen of the display unit 83. In this case, since all the corner cubes C1 to C4 are shown on the screen of the display unit 83, the user can determine that the radio wave irradiation range Wa by the sensor device 3 is also at an appropriate position on the upper surface of the mat 61. That is, it can be determined that the sensor device 3 is installed at an appropriate position.

[0088] On the other hand, for example, when the installation position of the sensor device 3 is not appropriate, as shown in FIG. 12B, for example, only some of the corner cubes C2 and C4 are displayed on the screen of the display unit 83. Also, when the deviation of the installation position of the sensor device 3 is large, all the corner cubes C1 to C4 may not be displayed on the screen of the display unit 83. In this case, since only some of the corner cubes C2 and C4 are shown on the screen of the display unit 83, the user can determine that the radio wave irradiation range Wa by the sensor device 3 is also deviated from the upper surface of the mat 61. That is, it can be determined that the sensor device 3 is not installed at an appropriate position.

[0089] In the first embodiment, its first modification, and its second modification, the case where visible light L is used as the irradiation light irradiated from the light source unit 32 has been described. However, the present invention is not limited to this. For example, infrared rays may be used as the irradiation light irradiated from the light source unit 32. Unlike the visible light L, infrared rays are invisible to the patient's eyes. In this case, the infrared rays can be visualized by using a dedicated instrument such as an infrared camera or an infrared viewer. Thereby, the information regarding the directivity of the radio wave Ws that is not originally visible to the eyes can be visualized. Also, for example, when the biological monitoring device 10 is installed at night, there is an advantage that the patient is not dazzled.

[0090] <Second Embodiment> In the second embodiment, the radio wave irradiation range Wa is visualized by superimposing and displaying the radio wave irradiation range Wa on the image obtained by actual shooting using AR (Augmented Reality) technology. AR is an abbreviation for Augmented Reality. In the second embodiment, the description will focus on the differences from the first embodiment, and the same reference numerals will be given to the parts common to the first embodiment and the detailed description will be omitted.

[0091] FIG. 13 shows an example of the schematic configuration of the biological monitoring device 10 installed around the bed 6 according to the second embodiment.

[0092] The biological monitoring device 10 includes a sensor device 3 and a terminal device 8B. The sensor device 3 is attached to the sensor attachment jig 7 and installed around the bed 6. The sensor device 3 is installed, for example, on the head side of the bed 6 and obliquely above the bed 6.

[0093] The terminal device 8B is attached to the sensor attachment jig 7 and is disposed at a position adjacent to the sensor device 3. The terminal device 8B is a device having a photographing function and a display function, such as a smartphone, a tablet, or the like. The terminal device 8B superimposes and displays a preset radio wave irradiation range Wa, that is, a measurable range by the sensor device 3, on an image photographed in the room by AR technology. Note that the terminal device 8B is an example of a display device.

[0094] [Configuration example of block diagram of terminal device 8B] FIG. 14 shows an example of a block diagram of the terminal device 8B according to the second embodiment. The terminal device 8B includes a control unit 80, a storage unit 81, an operation unit 82, a display unit 83, a photographing unit 84, a measurement unit 85, and a communication unit 86. The control unit 80, the storage unit 81, the operation unit 82, the display unit 83, the photographing unit 84, the measurement unit 85, and the communication unit 86 are connected to each other via, for example, a bus 89 or the like.

[0095] Note that the difference between the terminal device 8B of the second embodiment and the terminal device 8A of the first embodiment is only that the terminal device 8B of the second embodiment includes the measurement unit 85. Therefore, only the measurement unit 85 will be described below.

[0096] The measurement unit 85 is, for example, LIDAR. LIDAR is an abbreviation for Light Detection And Ranging. The measurement unit 85 measures the distance to an object S such as a patient, the position of the object S, the shape, etc. by irradiating laser light and detecting the reflected wave. Note that the measurement of the distance to the object S or the like may be performed by a technique other than LIDAR or the like, and a known technique can be adopted.

[0097] In the second embodiment, an application for executing a confirmation mode for adjusting the radio wave irradiation range Wa by the user may be installed on the terminal device 8B side. The application may be stored in the storage unit 81, for example. The control unit 80 realizes the confirmation mode by executing the application stored in the storage unit 81 based on an instruction received by the operation unit 82.

[0098] [Operation Example of Biological Monitoring Device 10] Next, the procedure for checking the radio wave irradiation range Wa on the bed 6 in the biological monitoring device 10 according to the second embodiment will be described. FIG. 15A shows an example of an image of the radio wave irradiation range Wa visualized by AR technology and displayed on the screen of the display unit 83 of the terminal device 8B.

[0099] First, an object O including the radio wave irradiation range Wa is generated. The object O is, for example, located on the upper surface of the mat 61 of the bed 6 and is configured with a size slightly smaller than the outer shape of the upper surface of the mat 61. The object O may be set in advance with information such as the distance from the sensor device 3 of the radio wave irradiation range Wa, the angle with respect to the sensor device 3, and the size, using the three-dimensional data of the bed 6 and the like and the position coordinates obtained in advance.

[0100] Next, the measurement unit 85 measures the distance and angle of the object S on the bed 6 side and the region including the upper surface of the mat 61. The measurement information obtained by the measurement includes a point cloud based on the coordinate data of each object. The imaging unit 84 takes an aerial view of the region on the bed 6 side. The image to be taken may be a still image or a moving image. It is assumed that any position in the taken image can be represented by coordinates.

[0101] The control unit aligns and displays an object O including the preset radio wave irradiation range Wa on the image taken by the imaging unit 84 based on the measurement information such as the distance and angle of the object S and the like measured by the measurement unit 85. Specifically, as shown in FIG. 15A, on the screen of the display unit 83, the radio wave irradiation range Wa, which is the object O, is superimposed and displayed on the upper surface of the mat 61 of the bed 6 taken by the imaging unit 84. In this embodiment, it is assumed that the distance of the preset radio wave irradiation range Wa and the distance to the region including the object S measured by the measurement unit 85, the upper surface of the mat 61 of the bed 6, etc. are substantially the same.

[0102] According to the second embodiment, a preset radio wave irradiation range Wa is superimposed and displayed on the bed 6 in the actual image captured by the imaging unit 84 by using AR technology. As a result, the radio wave irradiation range Wa that is not originally visible to the naked eye can be visualized, and the user can confirm the radio wave irradiation range Wa and accurately and appropriately measure the biological information of the object S.

[0103] [Modification Example of the Second Embodiment] In the modification example of the second embodiment, it is determined whether the installation position of the sensor device 3 is appropriate by using the measurement information measured by the measurement unit 85. Note that the modification example of the second embodiment will be mainly described with respect to the differences from the second embodiment, and the same reference numerals will be given to the parts common to the second embodiment and the detailed description will be omitted.

[0104] Setting information including the distance, direction, etc. from the sensor device 3 of the object O in the radio wave irradiation range to the object S and the region including the upper surface of the mat 61 is preset. Next, the measurement unit 85 measures the distance and angle of the region including the object S on the bed 6 side and the upper surface of the mat 61. The control unit 80 compares, for example, the preset setting information with the measurement information measured by the measurement unit 75. When the measurement information measured by the measurement unit 75 exceeds the preset setting information, the control unit 80 determines that the position of the sensor device 3 is too far from the bed 6 and is outside the measurable range of the sensor device 3. Specifically, this is the case where the distance to the object S measured by the measurement unit 75 significantly exceeds the preset distance of the object O.

[0105] FIG. 15B shows an example of an image of the radio wave irradiation range Wa visualized by AR technology displayed on the screen of the display unit 83 of the terminal device 8B. As shown in FIG. 15B, on the screen of the display unit 83, the radio wave irradiation range Wa, which is the object O, is superimposed and displayed on the upper surface of the mat 61 of the bed 6 photographed by the photographing unit 84. In the case of the modified example, the control unit 80 changes the display color of the object O superimposed and displayed on the image photographed by the photographing unit 84 in order to alert the user. In FIG. 15B, the object O with the changed display color is indicated by hatching. Further, character information such as "The distance between the sensor device and the object is too far" for alerting the user may be displayed within the object O. As a method of alerting, in addition to changing the display color of the object O, a sound output unit such as a speaker may be provided, and voice or a warning sound may be output from the sound output unit. Further, the object O may be displayed in a blinking manner.

[0106] In the above-described modified example, based on the information on the distance from the sensor device 3 to the object S, it was determined whether it was within the measurable range of the sensor device 3, but it is not limited thereto. For example, angle information or the like from the sensor device 3 to the object S may be used.

[0107] <Third Embodiment> In the third embodiment, the radio wave irradiation range Wa is confirmed by visually checking the actually photographed image. In the third embodiment, the description will be centered on the differences from the first embodiment, and the same reference numerals will be given to the parts common to the first embodiment and the detailed description will be omitted.

[0108] [Configuration Example of Biological Monitoring Device 10] FIG. 16 shows an example of the schematic configuration of the biological monitoring device 10 installed around the bed 6 according to the third embodiment. The biological monitoring device 10 includes a sensor device 3 and a terminal device 8C which is an example of a display device. The sensor device 3 is attached to the sensor attachment jig 7 and installed around the bed 6. The sensor device 3 is installed, for example, on the head side of the bed 6 and obliquely above the bed 6.

[0109] The terminal device 8C is installed at a position adjacent to the sensor device 3. The terminal device 8C may be attached to, for example, the sensor mounting jig 7 or another jig. The terminal device 8C is a device having a photographing function and a display function, such as a video camera, a smartphone, a tablet, or the like. The terminal device 8C performs an overhead photograph of the bed 6 side and displays an image obtained by the photographing on the screen. The display device for displaying an image or the like obtained by the photographing is not limited to the display unit 83 attached to the terminal device 8C. For example, the display device may be a display unit of another terminal device such as a smartphone connected to the terminal device 8C by wire or wirelessly. Examples of the wire include a USB cable or the like. Examples of the wireless include short-range wireless such as Bluetooth (registered trademark).

[0110] In the present embodiment, as shown in FIG. 16, the terminal device 8C is arranged so as to overlap above the sensor device 3 and is installed at substantially the same height as the sensor device 3. Further, the terminal device 8C is installed at substantially the same angle as the sensor device 3 with respect to the bed 6. By installing the terminal device 8C in this way, the photographing direction of the terminal device 8C and the irradiation direction of the radio wave Ws can be made substantially coincident. Thereby, by visually recognizing the image photographed by the terminal device 8C, the radio wave irradiation range Wa by the sensor device 3 can be confirmed.

[0111] Note that since the block configuration of the sensor device 3 of the third embodiment is common to the block configuration of the sensor device 3 of the second embodiment, detailed description thereof is omitted. Further, in the third embodiment, an example in which a video camera is used as the terminal device 8C in FIG. 16 is shown. However, since the basic block configuration is common to the terminal device 8B of the second embodiment, detailed description thereof is omitted.

[0112] [Operation example of the biological monitoring device 10] Next, the flow in the case of confirming the radio wave irradiation range Wa on the bed 6 in the biological monitoring device 10 according to the third embodiment will be described.

[0113] The user presses a shooting button or the like provided on the terminal device 8C to take an overhead shot of the bed 6 side. When the shooting button is pressed, the shooting unit 84 of the terminal device 8C takes an overhead shot of the bed 6 side. The control unit 80 of the terminal device 8C causes an image based on the image data obtained by the shooting of the shooting unit 84 to be displayed on the screen of the display unit 83.

[0114] FIG. 17A shows an example of an image displayed on the screen of the display unit 83 of the terminal device 8C when the sensor device 3 is installed at an appropriate position. In the present embodiment, the installation position of the terminal device 8C is selected so that the irradiation direction of the radio wave Ws substantially coincides with the shooting direction of the terminal device 8C. Therefore, when the sensor device 3 is installed at an appropriate position, as shown in FIG. 17A, the entire upper surface of the mat 61 of the bed 6 is shown in the image taken by the terminal device 8C. Thus, the user can determine that the appropriate position on the upper surface of the mat 61 of the bed 6 can also be irradiated with respect to the radio wave irradiation range Wa by the sensor device 3.

[0115] FIG. 17B shows an example of an image displayed on the screen of the display unit 83 of the terminal device 8C when the sensor device 3 is not installed at an appropriate position. When the sensor device 3 is not installed at an appropriate position, as shown in FIG. 17B, the entire upper surface of the mat 61 of the bed 6 is not shown in the image taken by the terminal device 8C. That is, a part or all of the upper surface of the mat 61 of the bed 6 is out of the screen frame of the display unit 83. In this case, the user can determine that the radio wave irradiation range Wa by the sensor device 3 is also shifted from the appropriate position on the upper surface of the mat 61 of the bed 6.

[0116] According to the third embodiment, the shooting direction of the terminal device 8C and the irradiation direction of the radio wave Ws are made substantially coincident. Therefore, when shooting in the shooting direction set by the terminal device 8C, the radio wave irradiation range Wa is included in the image obtained by shooting. Thereby, the user can confirm the radio wave irradiation range Wa by the sensor device 3 by looking at the image shot by the terminal device 8C. That is, it is possible to determine whether the sensor device 3 is installed at an appropriate position. Also, when the radio wave irradiation range Wa is deviated from the measurable area on the bed 6, the installation position of the sensor device 3 can be adjusted to an appropriate position by moving the installation position of the sensor device 3. Thereby, since the radio wave irradiation range Wa can be made to coincide with the measurable area on the bed 6, the biological information of the object S can be measured accurately and appropriately.

[0117] <Modification Example of the Third Embodiment> In the modification example of the third embodiment, the radio wave irradiation range Wa is confirmed by checking the position of the marker M installed on the bed 6. In the modification example of the third embodiment, the description will be centered on the differences from the above third embodiment, and the same reference numerals will be given to the parts common to the third embodiment and the detailed description will be omitted.

[0118] [Configuration Example of the Biological Monitoring Device 10] FIG. 18 shows an example of the schematic configuration of the biological monitoring device 10 installed around the bed 6 according to the modification example of the third embodiment. FIG. 19 is a diagram showing an example of the positional relationship between the sensor device 3 installed at an appropriate position and the marker M installed on the biological monitoring device 10.

[0119] The biological monitoring device 10 includes a sensor device 3, a plurality of markers M, and a terminal device 8C. The plurality of markers M includes, for example, four markers M. The four markers M1 to M4 are respectively installed at four corner portions on the upper surface of the mat 61 of the bed 6. The area surrounded by the markers M1 to M4 indicates the range in which the biological information of the object S in the lying position can be measured on the mat 61. In other words, in the present embodiment, the area surrounded by the markers M1 to M4 substantially coincides with the radio wave irradiation range Wa by the sensor device 3, that is, the measurable range.

[0120] [Operation example of the biological monitoring device 10] Next, the flow in the case of confirming the radio wave irradiation range Wa on the bed 6 in the biological monitoring device 10 according to the modification of the third embodiment will be described. The user presses a shooting button or the like provided on the terminal device 8C in order to take an overhead shot of the bed 6 side. When the shooting button is pressed, the shooting unit 84 of the terminal device 8C takes an overhead shot of the bed 6 side. The control unit 80 of the terminal device 8C causes the image obtained by the shooting of the shooting unit 84 to be displayed on the screen of the display unit 83.

[0121] FIG. 20A shows an example of an image displayed on the screen of the display unit 83 of the terminal device 8C when the sensor device 3 is installed at an appropriate position. In the present embodiment, the installation position of the terminal device 8C is selected so that the irradiation direction of the radio wave Ws coincides with the shooting direction of the terminal device 8C. Therefore, when the sensor device 3 is installed at an appropriate position, as shown in FIG. 20A, the image taken by the terminal device 8C includes the four markers M1 to M4 installed on the upper surface of the mat 61 of the bed 6. Thereby, the user can determine that the appropriate position on the upper surface of the mat 61 of the bed can also be irradiated with respect to the radio wave irradiation range Wa by the sensor device 3.

[0122] FIG. 20B shows an example of an image displayed on the screen of the display unit 83 of the terminal device 8C when the sensor device 3 is not installed at an appropriate position. When the sensor device 3 is not installed at an appropriate position, in the image captured by the terminal device 8C, as shown in FIG. 20B, some or all of the markers M1 to M4 installed on the upper surface of the mat 61 of the bed 6 do not appear. That is, some or all of the markers M1 to M4 installed on the upper surface of the mat 61 of the bed 6 are outside the screen frame of the display unit 83. In this case, the user can also determine that the radio wave irradiation range Wa by the sensor device 3 is shifted from an appropriate position on the upper surface of the mat 61 of the bed 6.

[0123] In addition, in the modification of the above-described third embodiment, in order to confirm the radio wave irradiation range Wa, the marker M was installed on the bed 6, but it is not limited thereto. For example, instead of the markers M1 to M4 installed at the corner portions on the upper surface of the mat 61 of the bed 6, four edges of the bed 6, for example, four support columns 62 may be used. By checking the positions of the four support columns 62 in the captured image, it is possible to determine whether the radio wave irradiation range Wa is at an appropriate position.

[0124] Also, in the above-described third embodiment and its modification, the case where an optical camera is used as the imaging unit 84 has been described, but it is not limited thereto. For example, an infrared camera may be used as the imaging unit 84. Specifically, the light source unit 32 has an infrared irradiation LED, and irradiates infrared rays from the infrared irradiation LED. Note that the infrared irradiation LED may be mounted on the side of the infrared camera constituting the imaging unit 84. The imaging unit 84 acquires infrared rays reflected by the bed 6 or the like, and performs image processing on the acquired infrared rays. The display unit 83 displays the image processed by the imaging unit 84. By using an infrared camera, it is possible to detect the upper surface of the mat 61 of the bed 6, the support columns 62 of the bed 6, and the marker M installed on the upper surface of the mat 61 even in a dark room or at night.

[0125] <Fourth Embodiment> In the fourth embodiment, it is determined whether the sensor device 3D is installed at an appropriate position by superimposing and displaying on the screen of the terminal device 8D an image indicating the position of the reflector R measured by the sensor device 3D and the radio wave irradiation range Wa. In the fourth embodiment, the description will focus on the differences from the first embodiment, and the same reference numerals will be assigned to the parts common to the first embodiment and the detailed description will be omitted.

[0126] FIG. 21 shows an example of the schematic configuration of the biological monitoring device 10 installed around the bed 6 according to the fourth embodiment.

[0127] The biological monitoring device 10 includes a sensor device 3D, a terminal device 8D, and a plurality of reflectors R. The sensor device 3D is attached to the sensor attachment jig 7 and installed around the bed 6. The sensor device 3D is installed, for example, on the head side of the bed 6 and obliquely above the bed 6.

[0128] The terminal device 8D is connected to the sensor device 3D via the network N. The terminal device 8D is a device having a display function and the like, and is, for example, a smartphone, a tablet, a notebook personal computer, or the like. The network N may be, for example, wireless communication such as a wireless LAN, Wi-Fi, Bluetooth (registered trademark), or may be wired communication using a cable such as a USB or a wired LAN. Note that the terminal device 8D is an example of a display device.

[0129] The plurality of reflectors R includes, for example, four reflectors R1 to R4. The four reflectors R1 to R4 are respectively installed at four corner portions on the upper surface of the mat 61 of the bed 6. The reflectors R1 to R4 reflect the radio waves irradiated from the sensor device 3D. The shape of the reflectors R1 to R4 is preferably disk-shaped so that radio waves from any direction can be reflected. Further, the reflectors R1 to R4 may vibrate in their respective unique patterns so that each reflector can be distinguished. The region surrounded by the reflectors R1 to R4 on the upper surface of the mat 61 indicates a measurable region where the biological information of the object S in the lying posture can be measured on the mat 61. When the radio wave irradiation range Wa by the sensor device 3D coincides with the measurable region, it can be determined that the sensor device 3D is in an appropriate position.

[0130] [Configuration Example of Block Diagram of Sensor Device 3D] FIG. 22 is a block diagram of the sensor device 3D according to the fourth embodiment. The sensor device 3D includes a control unit 30, a storage unit 31, a radio wave irradiation unit 33, a reception unit 34, a signal processing unit 35, a communication unit 36, and a vibration unit 38. The control unit 30, the storage unit 31, the radio wave irradiation unit 33, the reception unit 34, the signal processing unit 35, the communication unit 36, and the vibration unit 38 are connected to each other via, for example, a bus 39. The difference between the sensor device 3D of the fourth embodiment and the sensor device 3 of the first embodiment is only that the sensor device 3D of the fourth embodiment includes a vibration unit 38. Therefore, hereinafter, only the vibration unit 38 will be described.

[0131] The vibration unit 38 includes, for example, a vibration motor or the like. Specifically, the vibration unit 38 is composed of four and is attached to each of the reflectors R1 to R4. The vibration unit 38 is driven based on the drive signal supplied from the control unit 30 and vibrates each of the reflectors R1 to R4 at a unique frequency. Thereby, the reflectors R1 to R4 can vibrate in different vibration patterns from each other. Note that the vibration unit 38 may be other than a vibration motor, and known vibration means can be adopted.

[0132] [Operation Example of Biological Monitoring Device 10] Next, the process of checking the radio wave irradiation range Wa on the bed 6 in the biological monitoring device 10 according to the fourth embodiment will be described.

[0133] When the confirmation mode is selected, the control unit 30 of the sensor device 3D drives and controls the vibration unit 38 to vibrate the reflectors R1 to R4 of the bed 6 in a specific pattern. The radio wave irradiation unit 33 of the sensor device 3D irradiates the radio wave Ws toward the bed 6. The receiving unit 34 detects the reflected wave Wr reflected on the surface of the bed 6. In this embodiment, the reflected wave Wr reflected by the reflectors R1 to R4 vibrating in a specific pattern on the upper surface of the mat 61 of the bed 6 is detected. The communication unit 36 of the sensor device 3D transmits the detection information corresponding to the detected reflected wave to the terminal device 8D via the network N. The detection information includes, for example, the distances from the sensor device 3D to the reflectors R1 to R4, the angular information of the reflectors R1 to R4 with respect to the sensor device 3D, and the like.

[0134] The communication unit 86 of the terminal device 8D receives the detection information transmitted from the sensor device 3D. The control unit 80 specifies the positions (coordinates) of the reflectors R1 to R4 with respect to the bed 6 and the like based on the received detection information. In this embodiment, based on the installation position, inclination, etc. of the sensor device 3D, the position, size, etc. of the radio wave irradiation range Wa irradiated from the sensor device 3D are preset. The control unit 80 aligns the specified reflectors R1 to R4 with the preset radio wave irradiation range Wa, and superimposes and displays the reflectors R1 to R4 and the radio wave irradiation range Wa on the screen of the display unit 83.

[0135] FIG. 23A is a diagram showing the positional relationship between the sensor device 3D installed at an appropriate position and the reflectors R1 to R4 installed on the bed 6. FIG. 23B shows an example of an image displayed on the display unit 83 of the terminal device 8D when the sensor device 3D is installed at an appropriate position.

[0136] As shown in FIG. 23A, when the installation position of the sensor device 3D is appropriate, the sensor device 3D detects all four reflectors R1 to R4. Therefore, the four reflectors R1 to R4 are displayed on the screen of the display unit 83 of the terminal device 8D. The four reflectors R1 to R4 are displayed as different images according to the vibration pattern. In this embodiment, for simplicity of explanation, different numerical values are displayed on the reflectors R1 to R4. Also, the radio wave irradiation range Wa of the sensor device 3D set in advance is displayed on the screen of the display unit 83. In this way, when the installation position of the sensor device 3D is appropriate, all the reflectors R1 to R4 are superimposed and displayed within the radio wave irradiation range Wa.

[0137] The user can visually check the screen of the display unit 83 of the terminal device 8D and determine that the installation position of the sensor device 3D is appropriate because all the reflectors R1 to R4 are displayed within the radio wave irradiation range Wa. That is, since the radio wave irradiation range Wa by the sensor device 3D coincides with the measurable range defined by the reflectors R1 to R4, it can be determined that the installation position of the sensor device 3D is appropriate.

[0138] FIG. 24A is a diagram showing the positional relationship between the sensor device 3D installed at an inappropriate position and the reflectors R1 to R4 installed on the bed 6. FIG. 24B shows an example of an image displayed on the display unit 83 of the terminal device 8D when the sensor device 3D is not installed at an appropriate position.

[0139] When the installation position of the 3D sensor device is not appropriate, the 3D sensor device detects only some of the four reflectors R1 to R4. As shown in FIG. 24A, for example, when the 3D sensor device is installed offset to the right with respect to the bed 6, the 3D sensor device detects only the reflectors R2 and R4 installed on the right side of the mat 61. The reflectors R1 and R3 installed on the left side of the mat 61 are not detected by the 3D sensor device. Therefore, only the reflectors R2 and R4 are displayed on the screen of the display unit 83 of the terminal device 8D as shown in FIG. 24B. Also, in the center of the screen of the display unit 83, a radio wave irradiation range Wa by the preset 3D sensor device is displayed. Thus, when the installation position of the 3D sensor device is not appropriate, only the reflectors R2 and R4 are within the region of the radio wave irradiation range Wa, and the reflectors R1 and R3 are outside the radio wave irradiation range Wa.

[0140] The user can visually recognize the screen of the display unit 83 and, since only some of the reflectors R2 and R4 are displayed within the radio wave irradiation range Wa, can determine that the installation position of the 3D sensor device is not appropriate. That is, since the radio wave irradiation range Wa by the 3D sensor device does not match the measurable range defined by the reflectors R1 to R4, it can be determined that the installation position of the 3D sensor device is not appropriate.

[0141] FIG. 25A is a diagram showing the positional relationship between the 3D sensor device installed at an appropriate position and the reflectors R1 to R4 installed on the bed 6. FIG. 25B shows an example of an image displayed on the display unit 83 of the terminal device 8D when the 3D sensor device is installed at an appropriate position and a part of the reflectors R1 to R4 is shielded.

[0142] Even when the installation position of the 3D sensor device is appropriate, some of the reflectors R1 to R4 installed on the mat 61 may be blocked by a futon or the like. For example, as shown in Fig. 25A, when the reflectors R1 and R4 are blocked, the 3D sensor device detects only the reflectors R2 and R3. In Fig. 25A and the like, the blocked reflectors R1 and R4 are shown in gray. In this case, only the reflectors R2 and R3 are displayed on the screen of the display unit 83. The radio wave irradiation range Wa of the 3D sensor device set in advance is displayed at the center of the screen of the display unit 83. The reflectors R2 and R3 detected by the 3D sensor device are within the area of the radio wave irradiation range Wa and are located on the diagonal line Wa1 of the radio wave irradiation range Wa.

[0143] The user visually recognizes the screen of the display unit 83 and sees that the reflectors R2 and R3 are on the diagonal line Wa1 of the radio wave irradiation range Wa. Therefore, it can be predicted that the remaining reflectors R1 and R4 are also on the other diagonal line Wa2 of the radio wave irradiation range Wa. Accordingly, the user can determine that the installation position of the 3D sensor device is appropriate based on the prediction that all the reflectors R1 to R4 are within the radio wave irradiation range Wa. Even when three of the reflectors R1 to R4 are detected, it can be predicted that the four reflectors R1 to R4 are present within the radio wave irradiation range Wa.

[0144] In the fourth embodiment, an image showing the position of the reflector R measured by the 3D sensor device and the radio wave irradiation range Wa by the 3D sensor device are superimposed and displayed on the screen of the terminal device 8D. Thereby, by checking whether all or part of the reflectors R1 to R4 are superimposed and displayed on the radio wave irradiation range Wa, it can be determined whether the radio wave irradiation range Wa coincides with the measurable area on the bed 6. When the radio wave irradiation range Wa is deviated from the measurable area on the bed 6, the user can adjust the installation position of the 3D sensor device to move the 3D sensor device to an appropriate position. As a result, the radio wave irradiation range Wa can be made to coincide with the measurable area on the bed 6, so that the biological information of the object S can be accurately and appropriately measured.

[0145] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the technical scope of the present disclosure is not limited to such examples. Also, various modified examples and improvements made are naturally within the scope of the technical idea described in the claims of those skilled in the art and belong to the technical scope of the present disclosure. Further, the above-described embodiments may include one or more of the embodiments and any combinations thereof.

Explanation of Reference Numerals

[0146] 3, 3D sensor device 8A, 8B, 8C, 8D terminal device (display device) 10 biological monitoring device 32 light source unit 33 radio wave irradiation unit 34 receiving unit 332 first phase adjustment unit (phase adjustment unit) 344 second phase adjustment unit (phase adjustment unit) 84 imaging unit 85 measurement unit 100 biological monitoring system 334 transmission antenna 340 reception antenna

Claims

1. A biological monitoring device comprising a transmitting antenna that irradiates a transmitting wave and a receiving antenna that receives a reflected wave from a target of the transmitting wave, wherein at least one of the transmitting antenna or the receiving antenna has a plurality of antennas, a phase adjustment unit that detects a reflected signal from a target by changing the gain of at least one of the transmitting wave and the reflected wave in a specific direction by controlling the phases of the plurality of antennas, and a light source unit that irradiates visible light or infrared light in the direction of the radio wave axis. Biological monitoring device.

2. The light source unit irradiates visible light or infrared light including a shape indicating a direction in which the gain can be changed by the phase adjustment unit. The biological monitoring device according to claim 1.

3. The shape has at least an axis extending in the longitudinal direction, and the axis is parallel to the direction in which the gain can be changed. The biological monitoring device according to claim 2.

4. The light source unit irradiates visible light or infrared light including a shape indicating the entire range in which the transmitting wave can be transmitted by changing the gain by the phase adjustment unit. The biological monitoring device according to claim 1.

5. The light source unit irradiates visible light or infrared light including a shape indicating the entire range in which the reflected wave can be received by changing the gain by the phase adjustment unit. The biological monitoring device according to claim 1.

6. The transmitting antenna and the light source unit are installed such that the center of the entire range in which the transmitting wave irradiated from the transmitting antenna can be transmitted coincides with the center of the irradiation range of the visible light or infrared light irradiated from the light source unit. The biological monitoring device according to any one of claims 1 to 5.

7. It comprises an adjustment mechanism for adjusting at least one of the height, angle, and direction of at least one of the antenna and the light source unit. The biological monitoring device according to claim 6.

8. A biological monitoring device comprising a transmitting antenna that irradiates a transmitting wave and a receiving antenna that receives a reflected wave from a target of the transmitting wave, wherein at least one of the transmitting antenna or the receiving antenna has a plurality of antennas, a phase adjustment unit that changes the gain of at least one of the transmitting wave and the reflected wave in a specific direction by controlling the phases of the plurality of antennas, a photographing unit that photographs the area irradiated with the transmitting wave, and a display device that displays an image of the area photographed by the photographing unit. A biological monitoring device comprising...

9. Comprising a measuring unit that measures the angle and distance to the said region, Based on the angle and distance measured by the said measuring unit, the said display device superimposes and displays the preset irradiation range of the said transmission wave on the image of the said region photographed by the said photographing unit. The biological monitoring device according to Claim 8.

10. Installed in a measurement range capable of measuring biological information of an object, and comprising a reflector that reflects the said transmission wave irradiated from the said transmission antenna, Based on the position of the said reflector indicated by an image based on the said transmission wave reflected by the said reflector, the said display device superimposes and displays the preset irradiation range of the said transmission wave. The biological monitoring device according to Claim 8.

11. A biological monitoring method for a biological monitoring device comprising a transmission antenna that irradiates a transmission wave and a reception antenna that receives a reflected wave of the said transmission wave, wherein at least one of the said transmission antenna or reception antenna has a plurality of antennas, A phase control step of detecting a reflection signal from a target by changing the gain of at least one of the said transmission wave and the said reflected wave in a specific direction by controlling the phases of the said plurality of antennas, An irradiation step of irradiating visible light or infrared rays in the direction of the radio wave axis. Biological monitoring method.

12. The biological monitoring device according to any one of Claims 1 to 10, A server that is connected to the said biological monitoring device via a network and manages the biological information of an object transmitted from the said biological monitoring device, A biological monitoring system comprising...

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