WO2017175462A1

WO2017175462A1 - Sensor device

Info

Publication number: WO2017175462A1
Application number: PCT/JP2017/003535
Authority: WO
Inventors: 孝一川村
Original assignee: コニカミノルタ株式会社
Priority date: 2016-04-04
Filing date: 2017-02-01
Publication date: 2017-10-12
Also published as: JPWO2017175462A1

Abstract

Provided is a sensor device which is resistant to vibration and which is provided at low cost, the sensor device being capable of easily directing radio waves emitted from a transceiver unit toward a desired target. A coupling device retains a tubular member with respect to a frame such that the tubular member is freely rotatable about a first axis line passing between the transceiver unit and a passage port and about a second axis line which is non-parallel to the first axis line and does not overlap with the first axis line.

Description

Sensor device

The present invention relates to a sensor device suitable for use in, for example, a nursing facility.

In Japan, the aging population is declining rapidly due to an increase in the average life expectancy of the people and a decline in the birth rate. Along with this, the number of hospitals and elderly welfare facilities that accommodate those who need nursing (nursing nurses) is increasing. However, the number of nurses and caregivers is chronically sufficient due to severe working conditions. This is a serious situation. Especially at night and so on, a small number of nurses must be watched over, and the burden on the caregiver increases, which contributes to further labor shortages.

In order to reduce the burden on such caregivers, there is a need for technology that supports care work. For example, in order to cause a machine to perform a part of work of a caregiver or the like, various techniques for monitoring a nurse who needs care have been developed.

As a technique for monitoring a nurse who requires nursing care, for example, a technique has been developed in which an image of a nurse requiring care is captured by a camera, image analysis is performed, and an alarm is issued when an accident such as a fall occurs. However, for example, there is little movement of the nurse who needs to be asleep, and if the subject brightness is low at night, the facial color cannot be observed sufficiently. is there. On the other hand, sensors that are directly attached to the body of a nurse requiring care to monitor heart rate and blood pressure have already been developed. There is a problem that is limited.

On the other hand, Non-Patent Document 1 detects periodic and minute vibrations associated with breathing and heartbeats on the surface of a human body using a microwave Doppler radar, and performs signal processing in real time. A technique for monitoring is disclosed. By installing a Doppler sensor using such a technique in the room of the nurse requiring care, it becomes possible to monitor the nurse requiring care at a remote location. By using this technology, it is possible to quickly detect and notify abnormalities in breathing and heartbeats of nurses requiring care, so that even a limited number of caregivers can quickly and appropriately deal with it, It is expected that the labor shortage can be effectively resolved.

JP 2008-219233 A

By the way, when performing detection by focusing on a target in a specific area with radio waves emitted from a Doppler radar used in a Doppler sensor, it is necessary to provide directivity, and therefore a Doppler radar is used in combination with a member that provides directivity. It is common. Therefore, there is a problem of how to install the Doppler radar in the room of the nurse in need. Here, the position of the bed in the living room often changes depending on the preference of the nurse requiring use. Therefore, the Doppler radar is fixed on, for example, a holding table with a caster so that it can be appropriately moved to the position of the bed so that radio waves can be appropriately irradiated to the nurse who needs care even if the position of the bed changes. There is also an idea. However, if the Doppler radar itself vibrates, the detection signal may be adversely affected. Therefore, it is not desirable to fix the Doppler radar to a holding table with a caster that easily vibrates. Therefore, it is important that the Doppler radar is fixedly installed on the wall or ceiling of the room as a vibration countermeasure for accurate detection. In addition, if the Doppler radar is within the reach of the nurse in need, there is a risk of accidental damage. From this point of view, it is desirable to install the Doppler radar on the wall or ceiling of the room.

However, when the Doppler radar is fixed to the wall or ceiling of the room, the radiation direction of the radio wave is adjusted so that the radio wave emitted from the Doppler radar can be appropriately irradiated to the nursing staff whose position can change with the bed. It needs to be possible. In contrast, Patent Document 1 discloses an EL rotating structure that rotates an antenna reflector around an EL axis, a cross EL rotating structure that rotates around a cross EL axis that is orthogonal to the EL axis, an EL axis, and The structure supported by the AZ rotating structure rotated around the AZ axis orthogonal to the cross EL axis is disclosed. Therefore, it can be said that the Doppler radar can be supported by adjusting the irradiation direction of the radio wave by using the configuration of the conventional technique. However, since the rotating structure disclosed by the configuration of Patent Document 1 is a large and complicated structure, a large-scale construction of each living room is required to install the rotating structure, and not only the cost of the main body but also the installation cost is required. It will greatly increase.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a sensor device that can easily direct a radio wave emitted from a transmission / reception unit to a desired object while being resistant to vibration and low cost. And

In order to achieve at least one of the above-described objects, a sensor device reflecting one aspect of the present invention is:
A transmission / reception unit including a transmission unit and a reception unit;
A cylindrical member comprising the transmission / reception unit on one end side, and a passage opening on the other end side;
A frame for holding the cylindrical member;
A connecting device for connecting the cylindrical member and the frame;
The radio wave emitted from the transmission unit of the transmission / reception unit is irradiated toward the object through the passage, and the radio wave reflected from the object is received by the reception unit through the passage. And
The connecting device has a second axis that is nonparallel and non-polymerized with respect to the frame, around the first axis that passes between the transmitting / receiving unit and the passage port, and is not parallel to the first axis. It is held so as to be rotatable around.

According to the present invention, it is possible to provide a sensor device that can easily direct a radio wave emitted from a transmission / reception unit to a desired object while being resistant to vibration and low cost.

It is sectional drawing of the sensor apparatus concerning this embodiment. It is a block diagram of the sensor apparatus shown in FIG. It is an enlarged view of the principal part of the sensor apparatus shown in FIG. It is an exploded view of the principal part of a sensor apparatus. It is a figure which shows the positional relationship of the principal part of the sensor apparatus attached to the ceiling (not shown) of a living room, and a subject. It is an exploded view of the holding mechanism of the sensor apparatus concerning another embodiment. It is sectional drawing which expands and shows the coupling device vicinity of this embodiment in the assembled state.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings. 1 is a cross-sectional view of the sensor device according to the present embodiment, FIG. 2 is a block diagram of the sensor device shown in FIG. 1, and FIG. 3 is an enlarged view of the main part of the sensor device shown in FIG. is there. FIG. 4 is an exploded view of the main part of the sensor device, but wiring is omitted. FIG. 5 is a diagram showing the positional relationship between the main part of the sensor device attached to the ceiling (not shown) of the living room and the subject.

As shown in FIG. 1, for example, the sensor device SD is installed and used on a ceiling Ce of a living room in which a subject Ob (FIG. 5) who is a watching target resides. As shown in FIGS. 1 and 2, the sensor device SD includes an embedded housing 1, a lower housing 2, a microwave transmission unit 3, a processing unit 4, a communication unit 5, a microphone 7, and a speaker 8.

The embedded housing 1 is a cylindrical housing, and is inserted and fixed in a hole C1 formed in the ceiling Ce. The embedded housing 1 includes a cylindrical part 11 and an upper wall part 12 connected to the upper end of the cylindrical part 11. The embedded housing 1 is inserted into the hole C1 so that the upper wall portion 12 is disposed behind the ceiling. Note that the cylindrical portion 11 and the upper wall portion 12 of the embedded housing 1 may be formed by integral molding, or may be separately assembled and then assembled. In addition, the embedded housing 1 is preferably made of metal, but is not limited thereto. Furthermore, the attachment method may be a hanging type that is not embedded in the ceiling.

The lower housing 2 is disposed so as to surround the hole C1 from below the ceiling Ce, and includes a base plate 21 attached to the ceiling Ce and an exterior cover 22 disposed below the base plate 21. The base plate 21 has a rectangular plate shape, and a through hole 211 is formed at the center thereof. The through hole 211 has an inner shape equal to the inner shape of the cylindrical portion 11 of the embedded housing 1. The upper surface of the base plate 21 and the lower end of the embedded housing 1 are connected to each other so that the inner shapes of the through hole 211 and the cylindrical portion 11 are matched.

Further, the peripheral wall 212 is integrally formed so as to extend downward from the periphery of the base plate 21. Further, the base plate 21 is formed with a screwing hole (not shown), and the sensor device SD can be fixed to the ceiling Ce by screwing to the ceiling Ce using the screwing hole. it can. Note that the base plate 21 is preferably made of metal, like the embedded housing 1.

The exterior cover 22 includes a flat part 221 and a cylindrical side wall part 222 that extends shortly upward from the periphery of the flat part 221. The side wall portion 222 is disposed so as to be fitted to the outside of the peripheral wall portion 212 of the base plate 21, and the flat portion 221 covers the base plate 21 from below in such a state. The exterior cover 22 is formed of a resin that transmits microwaves emitted from the microwave transmission unit 3, and more specifically, has a relative dielectric constant such as glass fiber, carbon-free polycarbonate, ABS, or the like. About 3 resins can be utilized.

The outer cover 22 is preferably detachable from the base plate 21. As an attachment structure for attaching the exterior cover 22 to the base plate 21, for example, it may be provided between the peripheral wall portion 212 and the side wall portion 222, and may be prevented from falling by utilizing elastic deformation at the time of engagement. A fixing tool such as a screw may be used. However, if the exterior cover 22 is shaken due to vibration transmitted from an air conditioner or the like in the room, the microwave passing through the exterior cover 22 may be adversely affected. Further, as will be described later, when the cylindrical member 322 is swung, it is inappropriate to have a discontinuous structure such as a joint or rib structure of the outer cover 22 on the radiation surface of the microwave emitted from the sensor element 31. Therefore, it is preferable that the microwave passage site has a shape with as little change as possible.

By covering the base plate 21 from below with the exterior cover 22, it is possible to make the inside of the sensor device SD, in particular, the microwave transmitter 3, difficult to see from the living room. It can be regarded as a part, making it difficult to remember discomfort and discomfort.

The microwave transmission unit 3 disposed inside the embedded housing 1 has a function of emitting a plurality of radio waves (microwaves) having different phases and detecting a reflected wave, and detecting the phase of the detected reflected wave. It is a Doppler sensor that detects the movement of the object (here, the subject Ob) by confirming the deviation.

The microwave transmission unit 3 includes a transmission antenna (transmission unit) 311 (see FIG. 2) for transmitting microwaves, a sensor element 31 including a reception antenna (reception unit) 312 (see FIG. 2) for reception, and a sensor. And a holding mechanism 32 that holds the element 31.

The sensor element 31 constituting the transmission / reception unit is mounted on a substrate (not shown) whose entire surface is shielded, and radiates microwaves on the mounting surface side (downward in the sensor device SD). The microwave transmission unit 3 can detect the reflected wave and detect the body movement of the subject Ob from the fluctuation of the phase. The movement of the subject Ob detected by the sensor device SD is a movement in a direction approaching or separating from the sensor device SD. For this reason, it is preferable to prevent the microwaves from being irradiated to any part other than the specific part of the subject Ob as much as possible in order to perform highly accurate detection.

As shown in FIG. 2, the sensor element 31 of the microwave transmission unit 3 is connected to the processing unit 4. In the microwave transmission unit 3, microwaves whose phases are shifted by the same wavelength and amplitude are radiated from the transmission antenna 311 toward the subject Ob through the passage port of the cylindrical member 322, and further reflected on the surface of the subject Ob. The received microwave can be received by the receiving antenna 312 through the passage opening of the cylindrical member 322. Then, based on the frequency shift of the microwave reflected by the receiving antenna 312, the processing unit 4 can detect the body movement of the subject Ob.

The detection of the body movement of the processing unit 4 will be specifically described. When the subject Ob irradiating the microwave does not move, the distance between the sensor device SD and the subject Ob does not vary, and therefore when the reflected wave is received, the frequency of the reflected wave is the same as the transmitted wave. On the other hand, when the subject Ob moves due to turning over or getting up, the distance between the sensor device SD and the subject Ob fluctuates, so that the frequency of the reflected wave shifts according to the moving speed. The processing unit 4 can detect the body movement of the subject Ob by detecting this change in frequency.

In addition, when the subject Ob is breathing, the chest and abdomen vary, and the distance from the sensor device SD to the chest or abdomen varies. When breathing at a constant rhythm, the frequency of the reflected wave fluctuates at a constant period. On the other hand, when the breathing suddenly increases or decreases, the frequency shift period changes. The sensor device SD can detect that the respiration of the subject Ob has become unstable by detecting that the frequency fluctuation period has changed.

The sensor device SD includes a communication unit 5, and can notify a person in charge of the target person Ob using the communication unit 5. The communication unit 5 is connected to the processing unit 4. When the processing unit 4 determines that there is an abnormality of the subject person, the communication unit 5 transmits an emergency occurrence signal to the device that can be recognized by the person in charge via the communication unit 5. Note that the communication unit 5 can perform wired connection or wireless connection.

The speaker 8 is used for the person in charge to call the target person by voice in response to an emergency call from the sensor device SD. Moreover, the microphone 7 receives the voice input of the subject person Ob, and can input a response by the voice of the subject person Ob in response to a call from the person in charge. The microphone 7 and the speaker 8 are preferably arranged so that the sound from the speaker 8 is not collected by the microphone 7. Further, the microphone 7 or the speaker 8 is not always necessary.

Thus, the sensor device SD detects the body movement of the subject Ob using the Doppler effect. Body movements include body movements such as turning over and getting up and breathing. For example, when the subject Ob turns over, the upper body often moves, and the distance from the sensor device SD varies accordingly. Moreover, since the chest and abdomen are displaced when the subject Ob breathes, the distance from the sensor device SD varies. Therefore, in the sensor device SD, the directivity is adjusted by the radio wave adjustment unit 33 so that the radio wave emitted from the transmission antenna 311 is irradiated to the upper body (mainly the chest and abdomen) of the subject Ob. However, the present invention is not limited to this.

By the way, since the position of the bed Bd on which the subject Ob lies is not fixed, the radio wave emitted from the sensor device SD may not reach an appropriate position on the body of the subject Ob when the position of the bed Bd moves greatly. There is. Therefore, it is necessary to cause the holding mechanism 32 to function as an azimuth adjusting mechanism that can direct the radiating microwave toward the subject Ob regardless of the position of the bed Bd. However, if the holding rigidity of the sensor device SD is low, for example, vibration of an air conditioner or the like is transmitted to cause vibration of the sensor element 31 and may cause erroneous detection. Therefore, it can be said that holding with as high rigidity as possible is preferable.

Hereinafter, the holding mechanism 32 of this embodiment will be described with reference to FIGS. The holding mechanism 32 includes an inner casing 321 fixedly disposed inside the embedded casing 1, a cylindrical member (also referred to as a radome) 322 partially accommodated in the inner casing 321, A coupling device 323 that couples the housing 321 and the cylindrical member 322 is provided. Here, the processing unit 4 is provided in the inner casing 321, but the present invention is not limited to this.

The inner casing 321 that is a frame and an annular member has a bottomless cylindrical shape, and includes an upper wall portion 3211 and a side wall portion 3212 that extends downward from the periphery of the upper wall portion 3211. The upper wall portion 3211 is formed with an opening 3211a through which a wiring HS for outputting a signal from the sensor element 31 to the processing unit 4 and sending a signal to the communication unit 5 passes. Further, an inner peripheral groove 3212a having an equal rectangular cross section extending over the entire periphery is formed on the inner periphery in the vicinity of the lower end of the side wall 3212. A pin 3212b (see FIG. 4) as a locking member is embedded in a part of the inner circumferential groove 3212a. Also, the direction of the axis of the inner casing 321 is taken as the Y axis (second axis).

On the other hand, the cylindrical member 322 has a bottomless truncated cone shape, and protrudes from the periphery of the upper wall portion 3221 and the upper wall portion 3221 toward the lower side of the inner housing 321 and extends while expanding. Part 3222. The sensor element 31 is attached to the lower surface of the upper wall portion 3221 that is one end (upper end) of the cylindrical member 322, and the other open end (lower end) of the cylindrical member 322 is the microwave emitted from the sensor element 31. It is a passage. Although the cylindrical member 322 is made of resin, the directivity of the microwave is enhanced by forming a metal film at least on the inner periphery. In the present embodiment, it is assumed that microwaves are emitted along substantially the axis of the cylindrical member 322.

A pair of cylindrical shafts 3222a are integrally provided by resin molding so as to extend from both sides of the tapered side wall portion 3222 of the cylindrical member 322 in a direction orthogonal to the axis. The cylindrical shaft 3222a is formed at a position other than the end of the cylindrical member 322. Here, when the cylindrical shaft 3222a is formed so as to pass through the center of gravity of the cylindrical member 322, it is preferable from the viewpoint of excellent vibration resistance and balance, but for example, ± 20% from the center of gravity of the total length of the cylindrical member 322. If it is provided within the range of Further, by forming the cylindrical shaft 3222a at a position other than the end portion of the cylindrical member 322, when the cylindrical member 322 is swung around the cylindrical shaft 3222a, the maximum locus drawn by the cylindrical member 322 can be suppressed small. This can contribute to the downsizing of the sensor device SD. Here, the direction passing through the axes of the two cylindrical shafts 3222a (the left-right direction in FIG. 3) is the X-axis (first axis). In the assembled state, the Y-axis and the X-axis do not necessarily have to be orthogonal to each other as long as they are non-parallel and non-polymerized.

The connecting device 323 includes a holding guide portion 3231 and a coil spring 3232 that is an urging member. As shown in FIG. 4, the holding guide portion 3231 has a substantially rectangular plate shape, and includes a square tube-like convex portion 3231 b at the center of the outer surface 3231 a facing radially outward, and a circular opening 3231 c on the inner surface facing the holding guide portion 3231. It has. The outer surface 3231a is a curved surface that matches the inner peripheral surface of the inner casing 321, and the outer surface 3231a is brought into contact with the inner peripheral surface of the inner casing 321, and the convex portion 3231b is in contact with the inner casing 321. It is preferable that the axial line of the circular opening 3231c is perpendicular to the Y axis when assembled to the inner circumferential grooves 3212a. The tip of the cylindrical shaft 3222a is rotatably fitted in the circular opening 3231c. At this time, it is preferable that the X axis passes through the center of the convex portion 3231b.

3, the convex portion 3231b of the holding guide portion 3231 is slidably engaged in the inner circumferential groove 3212a of the inner casing 321 in the assembled state as shown in FIG. Since the convex portion 3231b has a rectangular tube shape, the convex portion 3231b does not rotate in the inner circumferential groove 3212a, thereby reliably holding the holding guide portion 3231 with respect to the inner casing 321 in a predetermined posture. As shown in FIGS. 3 and 4, a coil spring 3232 is disposed around the cylindrical shaft 3222 a, and the holding guide portion 3231 is biased with a relatively strong elastic force in a direction away from the cylindrical member 322. Due to such strong urging, the outer surface 3231a of the holding guide portion 3231 is pressed against the inner peripheral surface in the vicinity of the inner peripheral groove 3212a of the inner housing 321 and is fixed without play by the strong frictional force generated at that time. In addition, since the cylindrical member 322 can be reliably held with respect to the holding guide portion 3231 by a strong frictional force generated between the opposing surfaces of the holding guide portion 3231 and the cylindrical member 322 and the coil spring 3232, vibration resistance Has also improved.

In FIG. 5, the bed Bd can take an arbitrary position on the floor FL of the living room. On the other hand, since the sensor device SD is fixedly disposed on the ceiling Ce (FIG. 1) of the living room, it is necessary to appropriately direct the microwaves emitted from the sensor device SD. According to the present embodiment, the cylindrical member 322 on which the sensor element 31 is mounted is attached to the inner casing 321 via the coupling device 323, so that the inner casing 321 can be configured with a simple and inexpensive configuration. Thus, the cylindrical member 322 can be rotated independently about the Y axis and the X axis.

More specifically, the cylinder member 322 is rotated around the X axis with respect to the inner housing 321 against the urging force of the coil spring 3232, for example, by hand without using a special tool or jig. When the rotation is independently performed, relative rotation occurs between the cylindrical shaft 3222a and the holding guide portion 3231. Further, a guide function is exhibited by sliding the convex portion 3231b of the holding guide portion 3231 along the inner circumferential groove 3212a of the inner casing 321, and the cylindrical member 322 is moved in the Y axis with respect to the inner casing 321. It can be rotated independently. Through the above operation, the angle and direction of the tube member 322 can be adjusted by swinging the axis of the cylindrical member 322 toward the chest of the subject Ob.

Even after adjustment, the attitude of the cylindrical member 322 relative to the inner casing 321 can be maintained by the biasing force of the coil spring 3232, and the cylindrical shaft 3222a is provided near the center of gravity of the cylindrical member 322. Even when the vibration caused by is transmitted through the ceiling Ce, it is possible to effectively avoid the change of the direction of the cylindrical member 322 due to its own weight. However, it is arbitrary to fix the cylindrical member 322 to the inner casing 321 using simple connecting means such as a holder (not shown) after adjustment.

In addition, when the convex portion 3231b of the holding guide portion 3231 is relatively slid along the inner circumferential groove 3212a of the inner housing 321, the convex portion 3231b abuts on the pin 3212b, so that further sliding. Therefore, since the convex portion 3231b does not move along the inner circumferential groove 3212a by 360 degrees or more, the possibility that the wiring HS is twisted excessively can be avoided.

FIG. 6 is an exploded view of a holding mechanism of a sensor device according to another embodiment, but wiring is omitted. FIG. 7 is an enlarged sectional view showing the vicinity of the coupling device of the present embodiment in an assembled state.

The holding mechanism 32 ′ of this embodiment can be replaced with the holding mechanism 32 in the above-described embodiment. The holding mechanism 32 ′ includes an inner casing 321 fixedly disposed inside the embedded casing 1, a cylindrical member (radome) 322 partially accommodated in the inner casing 321, and an inner casing. A connecting device 323 for connecting the body 321 and the cylindrical member 322;

The inner casing 321 that is a frame and an annular member has a bottomless cylindrical shape, and has an upper wall portion (not shown) and a side wall portion 3212 that extends downward from the periphery of the upper wall portion. . The side wall 3212 is provided with two parallel spiral grooves 3212a so as to penetrate the inside and outside. On the inner periphery of the side wall portion 3212, as shown in FIG. 7, a shallow groove-like recess 3212c is provided along the groove 3212a so that the groove 3212a is the deepest portion. The cross section of the recess 3212c has an arc shape. In FIG. 6, a pair of tabs 3212d are formed from the outer periphery near the upper end of the inner housing 321 toward the radially outer side. The tab 3212d is used for fixing the inner casing 321 to the cylindrical portion 11 by screwing or the like. Also, the direction of the axis of the inner casing 321 is taken as the Y axis (second axis).

The cylindrical member 322 has a bottomless truncated cone shape, and has an upper wall portion (not shown) in which the sensor element is attached to the lower surface, and projects from the periphery of the upper wall portion toward the lower side of the inner casing 321. And a tapered side wall portion 3222 that extends while extending. The other open end (lower end) of the cylindrical member 322 serves as a passage for microwaves emitted from the sensor element.

A pair of cylindrical shafts 3222a are integrally provided by resin molding so as to extend from both sides of the tapered side wall portion 3222 of the cylindrical member 322 in a direction orthogonal to the axis. The cylindrical shaft 3222a is formed at a position other than the end of the cylindrical member 322. Here, when the cylindrical shaft 3222a is formed so as to pass through the position of the center of gravity of the cylindrical member 322, it is excellent in vibration resistance and is preferable from the viewpoint of balance. Further, by forming the cylindrical shaft 3222a at a position other than the end portion of the cylindrical member 322, when the cylindrical member 322 is swung around the cylindrical shaft 3222a, the maximum locus drawn by the cylindrical member 322 can be suppressed small. This can contribute to the downsizing of the sensor device SD. A direction passing through the axes of the two cylindrical shafts 3222a is defined as an X axis (first axis). In the assembled state, the Y-axis and the X-axis do not necessarily have to be orthogonal to each other as long as they are non-parallel and non-polymerized.

The coupling device 323 includes a holding guide portion 3231 and a coil spring 3232. As shown in FIGS. 6 and 7, the holding guide portion 3231 has a substantially meniscus shape, is provided with a cylindrical convex portion 3231b at the center of the outer surface 3231a facing outward in the radial direction, and has a circular opening on the opposing inner surface. 3231c. The outer surface 3231a constituting the convex portion has a curved surface that matches the recess 3212c on the inner peripheral surface of the inner casing 321, and this outer surface 3231a is brought into contact with the inner peripheral surface of the inner casing 321, It is preferable that the axis of the circular opening 3231c be orthogonal to the Y-axis when the protrusions 3231b are engaged with the grooves 3212a of the inner housing 321 and assembled. The tip of the cylindrical shaft 3222a is rotatably fitted in the circular opening 3231c. At this time, it is preferable that the X axis passes through the center of the convex portion 3231b.

In the assembled state, one of the convex portions 3231b of the holding guide portion 3231 is slidably engaged in the first groove 3212a of the inner housing 321, and the other of the convex portions 3231b is the inner housing. A second groove 3212a of 321 is slidably engaged. At this time, since each convex portion 3231b is cylindrical, it can rotate when engaged in the groove 3212a, but the outer surface 3231a of the holding guide portion 3231 is a recess in the inner peripheral surface of the inner housing 321. By engaging with the 3212c, the holding guide portion 3231 does not rotate around the X axis with respect to the inner casing 321. As a result, the holding guide portion 3231 is securely held in a predetermined posture with respect to the inner casing 321. The recess 3212c also functions as a guide when the holding guide portion 3231 is slid relative to the groove 3212a.

Further, as shown in FIGS. 6 and 7, a coil spring 3232 is disposed around the cylindrical shaft 3222a, and the holding guide portion 3231 is urged with a relatively strong elastic force in a direction away from the cylindrical member 322. Due to such strong urging, the outer surface 3231a of the holding guide portion 3231 is pressed in a state where it matches the recess 3212c of the inner housing 321 and is fixed without play by the strong frictional force generated at that time. 3231 and the cylindrical member 322 can be securely held with respect to the holding guide portion 3231 by a strong frictional force generated between the opposing surfaces of the cylindrical member 322 and the coil spring 3232, and vibration resistance is also improved. Yes.

When adjusting the direction and angle of the cylindrical member 322, the operator can use the cylinder against the urging force of the coil spring 3232 by hand, for example, without using a special tool or jig, as in the above-described embodiment. When the member 322 is independently rotated around the X axis with respect to the inner housing 321, relative rotation occurs between the cylindrical shaft 3222 a and the holding guide portion 3231. On the other hand, the convex portion 3231b of the holding guide portion 3231 exhibits a guide function by sliding relative to the inner housing 321 in a spiral manner along the groove 3212a of the inner housing 321. It can be rotated independently about the Y axis. At this time, the cylindrical member 322 is also displaced in the Y-axis direction in accordance with the rotational displacement with respect to the inner casing 321. Through the above operation, the angle and direction of the cylinder member 322 can be adjusted by swinging the axis of the cylindrical member 322 toward the chest of the subject Ob. About another structure, it is the same as that of embodiment mentioned above.

The present invention is not limited to the embodiments described in the specification, and other embodiments and modifications are included for those skilled in the art from the embodiments and technical ideas described in the present specification. it is obvious. The description and the embodiments are for illustrative purposes only, and the scope of the present invention is indicated by the following claims.

DESCRIPTION OF SYMBOLS 1 Embedded type | mold housing 11 Cylindrical part 12 Upper wall part 2 Lower housing | casing 21 Base board 211 Through-hole 212 Peripheral wall part 22 Outer cover 221 Flat part 222 Side wall part 3 Microwave transmission part 31 Sensor element 311 Transmission antenna 312 Reception antenna 32, 32 'Holding mechanism 321 Inner casing 3211 Upper wall portion 3211a Opening 3212 Side wall portion 3212a Inner circumferential groove or spiral groove 3212b Pin 3212c Recess 3212d Tab 322 Cylindrical member 3221 Upper wall portion 3222a Tapered side wall portion 3222a Cylindrical shaft 323 Connecting device 3231 Holding guide portion 3231a Outer surface 3231b Convex portion 3231c Circular opening 3232 Coil spring 33 Radio wave adjustment unit 4 Processing unit 5 Communication unit 7 Microphone 8 Speaker Bd Bed C1 Hole Ce Ceiling HS Wiring Ob Target person SD Sensor device

Claims

A transmission / reception unit including a transmission unit and a reception unit;
A cylindrical member comprising the transmission / reception unit on one end side, and a passage opening on the other end side;
A frame for holding the cylindrical member;
A connecting device for connecting the cylindrical member and the frame;
The radio wave emitted from the transmission unit of the transmission / reception unit is irradiated toward the object through the passage, and the radio wave reflected from the object is received by the reception unit through the passage. And
The connecting device has a second axis that is nonparallel and non-polymerized with respect to the frame, around the first axis that passes between the transmitting / receiving unit and the passage port, and is not parallel to the first axis. A sensor device that can be rotated around.
The cylindrical member is provided with a cylindrical shaft extending along the first axis, and the frame surrounds the cylindrical member and includes an inner circumferential groove extending around the second axis. The coupling device is relatively movable along the inner circumferential groove by engaging with the inner circumferential groove and an opening that is rotatably fitted around the first axis with respect to the cylindrical shaft. The sensor device according to claim 1, further comprising: a holding guide portion provided with a convex portion having a shape that does not rotate in the inner circumferential groove; and a biasing member that biases the holding guide portion toward the frame. .
3. The sensor device according to claim 2, wherein a locking member is provided in a part of the inner circumferential groove to prevent relative movement between the holding guide portion and the annular member by locking with the convex portion.
The cylindrical member is provided with a cylindrical shaft extending along the first axis, and the frame surrounds the cylindrical member and extends around the second axis, and the spiral groove An annular member having a recess formed along the opening, and the coupling device is fitted into the spiral groove and an opening that is rotatably fitted to the cylindrical shaft about the first axis. A holding guide portion provided with a convex portion relatively movable along the spiral groove, a convex portion engaging with the recess, and a biasing member for biasing the holding guide portion toward the frame; The sensor device according to claim 1.