JP6404632B2 - Foot detection sensor - Google Patents

Description

  The present invention indicates that a user such as a patient, a care recipient, or the like, such as a hospital, a nursing facility, a nursing facility, or the like, has landed on the floor (floor) from the bed or has passed a predetermined floor by walking or the like. The present invention relates to a foot detection sensor to detect.

  In recent years, many countries including Japan are aging. As the population ages, the number of inpatients due to illness and injury increases, and the number of people who need care needs to increase due to aging. Inpatients and care recipients are often hospitalized or entered hospitals, nursing homes, elderly facilities, etc., and spend a lot of time in bed depending on their medical condition and care status.

  Thus, patients and care recipients who spend a lot of time in bed gradually become depressed by continuing to sleep in the bed for a long time or receiving excessive care by the caregiver. If the body and mind decline in this way, it becomes bedridden, which is not preferable for patients and care recipients. Also, the increase in bedridden people can cause social problems that put pressure on public insurance budgets such as health insurance and long-term care insurance.

  For this reason, patients and care recipients are required to perform their daily lives as much as possible. For example, it is preferable that patients and care recipients perform excretion, meals, visits to the examination room, etc. by themselves. This is because it is possible to prevent bedridden by performing the actions necessary for daily life as much as possible. Or, even if you are sleeping in bed, it is also important for patients and care recipients to exercise on the bed, such as turning over and raising their upper body, in order to prevent mental deterioration. .

In this way, patients and care recipients are required to get out of bed on their own and take autonomous actions so that they can be bedridden and can be discharged and discharged early. .
This is not only a subject who can be bedridden, but even a general inpatient can get off the bed and move to a toilet, canteen, or other places.

  However, it is dangerous for the patient or the person to be cared for if the patient or the person to be cared for moves on the bed or gets out of the bed. For example, there are some subjects who are prohibited or restricted from taking their own bed and taking actions such as walking, depending on their medical condition, physical condition, injury, etc.

  Alternatively, a subject who has a medical condition such as dementia may get out of bed and hesitate inside or outside the hospital. If hesitated, there is a problem that hospital staff such as family members, nurses, caregivers, and doctors cannot grasp the location of the target person. This problem makes it difficult to manage the safety of the subject and accidents.

  In addition, patients with mental illness may also behave unpredictably by family members and hospital staff. Even in such a case, family members and hospital staff need to prevent accidents and ensure safety of the subject.

  Or, there are patients who go out of bed without going out of bed without having dementia or mental illness. Although such patients have low accident problems and safety problems, there are problems that the healing of illnesses and injuries is delayed or the medical condition worsens. Of course, getting out of the bed and moving to various places in a state that should be kept at rest is not preferable for improving the patient's medical condition. Of course, it also causes moral deterioration in hospitals.

  This applies not only to patients at hospitals but also to care recipients such as care facilities and elderly facilities.

  In this way, in hospitals, nursing homes, nursing homes, etc., patients and care recipients understand that bed is the basis of their lives, and getting out of bed is a trigger for special or unexpected behavior. May be. For this reason, it has become necessary for family members and hospital staff to be able to immediately grasp that the subject has fallen from the bed.

  In such a situation, various techniques for detecting a contact or a seating state in a bed or a seat have been proposed as techniques for detecting contact of a human body or the like (see, for example, Patent Documents 1 to 4). These have proposed a technique for automatically detecting whether or not a person is sitting on a bed or a seat or getting up.

Japanese Patent Laid-Open No. 5-245149 JP-A-6-315424 JP 7-237487 A JP 2006-8098 A

  Patent Document 1 discloses a motion sickness detection device that detects motion sickness of a seated person based on the seating pressure and heart rate of the seated person by a piezoelectric element in a seat of an automobile or a transport passenger car.

  The technique disclosed in Patent Document 1 can detect motion sickness using pressure change and heart rate based on a piezoelectric element, but cannot detect a seated person's condition in detail. For example, it is not possible to detect details such as whether the seated person is seated, how much the seated state is, whether the seated person is getting off, or in a dangerous state. In addition, the technique of Patent Document 1 requires a problem that accuracy of detecting motion sickness is reduced and a device and equipment such as heart rate conversion in order to detect a change in heart rate from a pressure change of the piezoelectric element. Have a problem.

  For this reason, with the technique of patent document 1, the state in which the subject got off the bed cannot be detected.

  Japanese Patent Laid-Open No. 2004-228688 provides a blowing means that arranges a plurality of temperature sensors and humidity sensors on the seat surface of the bed, detects the body temperature and humidity of the sleeping person, and blows air into the bed so as to maintain the comfortable state of the sleeping person. A bed apparatus is disclosed. In other words, the technique disclosed in Patent Document 2 can estimate the comfort / discomfort level of the sleeping person based on the temperature and humidity that can be detected by the bed apparatus, and can provide a comfortable sleeping environment for the sleeping person.

  However, the technique disclosed in Patent Document 2 can only detect the body temperature and humidity of the sleeping person, and cannot accurately estimate the sleeping person's body position and situation. Naturally, even if the sleeping person's situation can be grasped, there is a problem that the target person cannot detect the state of getting off the bed.

  Patent Document 3 discloses an occupant detection device that detects whether or not an occupant is seated in a seat by a pressure-sensitive element attached to the back of the seat.

  Similarly to Patent Documents 1 and 2, Patent Document 3 has a problem that it cannot detect the state in which the subject has fallen from the bed.

  Patent Document 4 discloses a seat control device that controls the seating state of a car seat by using seat pressure detection and a camera.

  However, Patent Document 4 has the same problem as Patent Documents 1 to 3.

  Moreover, even if it is going to apply patent documents 1-4 to the state in which the subject had left from the bed, it has the following problems. This is a problem in the case where the prior art related to human body detection disclosed in Patent Documents 1 to 4 and the like is applied to detecting that the subject has fallen from the bed by installing it on the floor next to the bed.

  (Problem 1) When the subject gets down from the bed to the floor, the subject's foot cannot be reliably detected.

  (Problem 2) In connection with Problem 1, it is ensured that the subject has got out of bed by the subject's weight, posture at the time of landing, load at the time of landing, position at the time of landing, etc. It cannot be detected.

  (Problem 3) When installing next to the bed, it is difficult to install according to the form and characteristics of the hospital room or nursing room.

  (Problem 4) When installed next to a bed, it becomes an obstacle for hospital related persons other than the subject, family members, other inpatients, and the like.

  (Problem 5) The detection of the load due to the landing and the wired signal line when communicating the detected signal to a management unit such as a hospital staff may get in the way or cause a failure.

  (Problem 6) In a place where it is difficult to use an AC power source, there is also a problem that the battery cannot be used if the battery consumption is large when using a storage battery.

  (Problem 7) When used in hospitals or nursing care facilities, inconvenience due to light emission may occur.

  (Problem 8) A storage battery, a transmitter, or the like is attached to a part of the mat body, but a part of the mat is bent when the storage battery is replaced. During this bending, a burden is imposed on the sensor conductor included in the mat body.

  (Problem 9) When the floor sensor is installed in a different direction depending on the positional relationship with the bed, the transmitter becomes an obstructing positional relationship.

  In view of the above problems, an object of the present invention is to provide a foot detection sensor that can solve these problems 1 to 9 and is excellent in usability, durability, and accuracy.

In view of the above problems, the foot detection sensor of the present invention has a mat body having flexibility and a short side direction and a long side direction,
A first electrode wire mounted inside the mat body;
A second electrode wire mounted inside the mat body;
A transmission unit attached to the mat body and transmitting an electrical signal;
The first electrode line and the second electrode line are separated from each other in a normal state where no pressure is applied to the mat body, and the position where pressure is applied in the pressure application state where pressure is applied to the mat body. Can be contacted at
The first end of the first electrode line is electrically connected to the transmitter, the second end of the first electrode line is in an open state,
The first end of the second electrode line is electrically connected to the transmitter, and the second end of the second electrode line is in an open state,
In the pressure application state, at least a part of the first electrode line and the second electrode line comes into contact with each other to be in an energized state, and the transmission unit transmits a landing signal indicating that the energized state is established as a radio signal,
Each of the first electrode line and the second electrode line includes a plurality of short direction lines along the short direction and a long direction line connecting the plurality of short direction lines in the long direction in the mat body. Yes, and
The mat body has a fold line along the short direction,
The first electrode line and the second electrode line have a loop shape along the short side direction and the long side direction inside the mat body,
The transmitter is attached and attached to the end of the mat body,
The mat body further includes a reinforcing member along a direction extending from the transmission unit at a mounting position where the transmission unit is mounted,
The reinforcing member can be turned over to match the entire extending direction of the mat body when the transmitter is turned upside down at the mounting position.
Each of the first end of the first electrode line and the first end of the second electrode line connected to the transmission unit is connected at substantially the center of the end facing the mat body of the transmission unit,
Transmission unit, based on the first end portion of the first end and the second electrode lines of the first electrode line connected to the substantially central, Ru rotatable der respect mat body.

  The foot detection sensor according to the present invention can be easily and easily installed according to the shape of the foot detection sensor according to the position where the subject gets down such as the side of the bed.

  In addition, by narrowing the interval between the built-in electrode lines, it is possible to appropriately detect a stance with high accuracy in response to various changes in the subject's body shape, posture, and manner of getting off.

  In addition, due to the device of the shape and the positional relationship between the mat body and the transmission unit, it is difficult to disturb a third party in the installed state.

  Since the signal of the detection result of the landing can be transmitted wirelessly and transmitted to the management unit, the obstructing wired signal line can be eliminated.

  When using a storage battery, the problem based on the consumption of the storage battery can be reduced by suppressing excessive power consumption.

  In addition, since it is possible to suppress light emission and sound from the control mechanism of the transmission unit, it is possible to eliminate inconveniences in hospitals and care facilities.

  Since the transmitter connected to the mat body can be turned over in the opposite direction, the mat body can be reversible. Since reversible is possible, the transmission unit is unlikely to get in the way when installed on either side of the bed.

It is a perspective view of the foot detection sensor in Embodiment 1 of this invention. It is a schematic diagram inside the mat body in the first embodiment of the present invention. It is a schematic diagram which shows electricity supply with the 1st electrode line 3 and the 2nd electrode line 4 in Embodiment 1 of this invention. It is a perspective view which shows the state in which the foot detection sensor is installed in the floor surface beside the bed in Embodiment 1 of this invention. It is a schematic diagram which shows the state in which the user in Embodiment 1 of this invention got out of the bed and stepped on the foot detection sensor. It is an internal block diagram of the transmission part in Embodiment 3 of this invention. It is a reverse view of the foot detection sensor in Embodiment 5 of this invention. It is a schematic diagram of the foot detection sensor in Embodiment 6 of this invention. It is a front view of the receiving part in Embodiment 7 of this invention. It is a block diagram which shows the relationship between the foot detection sensor and receiving part in Embodiment 8 of this invention.

The foot detection sensor according to the first invention of the present invention has a mat body having flexibility and a short side direction and a long side direction,
A first electrode wire mounted inside the mat body;
A second electrode wire mounted inside the mat body;
A transmission unit attached to the mat body and transmitting an electrical signal;
The first electrode line and the second electrode line are separated from each other in a normal state where no pressure is applied to the mat body, and the position where pressure is applied in the pressure application state where pressure is applied to the mat body. Can be contacted at
The first end of the first electrode line is electrically connected to the transmitter, the second end of the first electrode line is in an open state,
The first end of the second electrode line is electrically connected to the transmitter, and the second end of the second electrode line is in an open state,
In the pressure application state, at least a part of the first electrode line and the second electrode line comes into contact with each other to be in an energized state, and the transmission unit transmits a landing signal indicating that the energized state is established as a radio signal,
Each of the first electrode line and the second electrode line includes a plurality of short direction lines along the short direction and a long direction line connecting the plurality of short direction lines in the long direction in the mat body. Yes, and
The mat body has a fold line along the short direction,
The first electrode line and the second electrode line have a loop shape along the short side direction and the long side direction inside the mat body,
The transmitter is attached and attached to the end of the mat body,
The mat body further includes a reinforcing member along a direction extending from the transmission unit at a mounting position where the transmission unit is mounted,
The reinforcing member can be turned over to match the entire extending direction of the mat body when the transmitter is turned upside down at the mounting position.
Each of the first end of the first electrode line and the first end of the second electrode line connected to the transmission unit is connected at substantially the center of the end facing the mat body of the transmission unit,
Transmission unit, based on the first end portion of the first end and the second electrode lines of the first electrode line connected to the substantially central, Ru rotatable der respect mat body.

With this configuration, the landing detection sensor is easy to install and can detect the landing reliably and easily regardless of the state of the landing or the shape and size of the foot.
With this configuration, even a large mat body can be easily transported and stored.
With this configuration, contact energization by landing can be realized in various places of the mat body.
With this configuration, when the foot detection sensor is installed, the transmission unit does not interfere with the human flow line. In other words, it is possible to prevent a failure due to a collision with the transmission unit.
With this configuration, the first electrode line and the second electrode line need not be damaged when turned over.
With this configuration, the first electrode line and the second electrode line need not be damaged when turned over.
With this configuration, the transmission unit can be rotated with respect to the mat body, and the mat body can be laid with the position of the transmission unit changed.

In Chakuashi detection sensor according to the second aspect of the present invention, in addition to the first invention, the mat body is placed on at least one of the lateral floor and the room entrance bed.

  With this configuration, it is possible to detect and grasp the unexpected behavior of a patient or a care recipient remotely and immediately.

In the foot detection sensor according to the third invention of the present invention, in addition to the first or second invention, the mat body has an internal space so that the first electrode line and the second electrode line are separated in a normal state. Form.

  With this configuration, an extra detection signal is not generated when there is no application of pressure, such as landing.

In the foot detection sensor according to the fourth aspect of the present invention, in addition to any of the first to third aspects of the invention, each of the first electrode line and the second electrode line includes a transmitter at the first end. By being connected, the transmitter is energized by the loop of the transmitter, the first electrode line, the second electrode line, and the contact portion in the pressure application state, and the transmitter detects the energized state and transmits a landing signal.

  With this configuration, it is possible to generate a landing signal based on the fact that contact energization based on the pressure between the electrodes is a landing fact. As a result, the pressure due to actual footing can be handled as a necessary footing signal.

In the foot detection sensor according to the fifth aspect of the present invention, in addition to any of the first to fourth aspects, each of the second end of the first electrode line and the second end of the second electrode line Is released inside the mat body.

  With this configuration, each of the first electrode line and the second electrode line is independently released from current, and energization does not occur unless there is mutual contact.

In the foot detection sensor according to the sixth aspect of the present invention, in addition to any one of the first to fifth aspects,
A control unit for transmitting a landing signal;
A power supply unit for supplying power to the control unit;
A storage battery storage unit that stores a storage battery serving as a power source of the power supply unit.

  With this configuration, the transmission unit can transmit a landing signal based on a radio signal.

In the foot detection sensor according to the seventh aspect of the present invention, in addition to the sixth aspect , the transmission section further includes a light emitting section that indicates the remaining amount of power of the storage battery stored in the storage battery storage section.

  With this configuration, the administrator or the user can surely grasp the battery replacement time of the foot detection sensor.

In the foot detection sensor according to the eighth aspect of the present invention, in addition to the seventh aspect , the light emitting section can adjust at least one of luminance and chromaticity.

  With this configuration, inconvenience at night or at bedtime can be prevented. Alternatively, the battery remaining amount warning can be made clearer.

In addition to any one of the first to eighth inventions, the foot detection sensor according to the ninth aspect of the present invention further includes a reception unit that receives the landing signal from the transmission unit.

With this configuration, a landing signal can be notified to the management department.
In addition to the ninth invention, the foot detection sensor according to the tenth invention of the present invention has a built-in AC-DC converter in the receiving unit. Can be made unnecessary.

In the foot detection sensor according to the eleventh invention of the present invention, in addition to the tenth invention, the receiving unit can receive the footing signals from the plurality of transmitting units.

  With this configuration, the receiving unit can correspond to a plurality of landing detection sensors.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  (Embodiment 1)

A landing detection sensor according to Embodiment 1 will be described.
FIG. 1 is a perspective view of a foot detection sensor according to Embodiment 1 of the present invention. FIG. 1 shows a foot detection sensor 1 that has been manufactured and is actually in use. A landing detection sensor 1 shown in FIG. 1 is installed on a floor surface or the like in a place corresponding to the necessity described in the prior art.

(Matte body)
The landing detection sensor 1 includes a mat body 2 having flexibility and a short direction 22 and a long direction 21. The mat body 2 forms the outer shape of the foot detection sensor 1. For this reason, the foot detection sensor 1 is easily grasped when the mat body 2 has the entire shape.

  The mat body 2 preferably has flexibility. This is because, in addition to being easy to install on the floor surface or the like, it is possible to reduce discomfort for the user who is landing on the mat body 2 of the foot sensor 1. In addition, various mats of humans and animals are repeatedly performed on the mat body 2 mainly by the user. That is, a large load is applied over a long period of time at random. The mat body 2 exposed to such a load has a very high concern about wear and wear.

  On the other hand, if the mat body 2 has flexibility, it can cope with such a long-term random load. As a result, the mat body 2 can have durability for use. In addition, it is possible to reduce discomfort and burden on the user at the time of landing.

  In addition, the mat body 2 can be folded by having flexibility. The mat body 2 has a fold line 26 along the short direction 22. In FIG. 1, there are two fold lines 26. For this reason, the mat body 2 can be folded in three. Of course, folding other than tri-folding is also possible.

  The landing detection sensor 1 is often installed on the floor next to a bed in a hospital or a nursing facility, or on an entrance of a hospital room or the like. For this reason, in order to detect a user's foot widely and reliably, it is appropriate that the longitudinal direction 21 is long. For example, it is appropriate to have a length that is close to the length of the bed.

  When the longitudinal direction 21 of the mat body 2 is long, it is often inconvenient to move, store, and carry the foot detection sensor 1. In consideration of these, it is preferable that the folding line 26 can be folded in the longitudinal direction 21. Also in this point, it is preferable that the mat body 2 has flexibility. Of course, it is preferable that the mat body 2 has flexibility in order to surely cause contact or non-contact of electrode wires inside the mat body 2 to be described later.

  In order to realize the flexibility of the mat body 2, the mat body may be formed of a material such as cloth, artificial skin, natural skin, vinyl, resin, or chemical fiber.

(Transmitter)
The landing detection sensor 1 includes a transmission unit 5 attached to the mat body 2. The transmission unit 5 transmits the detection result of the user's footing according to the purpose of use as a signal to the reception unit required in the usage mode.

  The transmitter 5 is preferably attached to a part of the mat body 2. In FIG. 1, the mat body 2 is provided near the end in the longitudinal direction 21. By being provided in such a position, as shown in FIG. 4, when the foot detection sensor 1 is installed beside the bed 100, the transmission unit 5 is positioned on the bed 100 side. By this position, the transmission unit 5 is less likely to be stepped on by a third party, and the failure of the transmission unit 5 is easily prevented.

  Moreover, the transmission part 5 can transmit the result of having detected the presence or absence of a footing as an electric signal (footing signal). At this time, the transmission unit 5 can transmit this electrical signal as a radio signal. The landing detection sensor 1 according to the first embodiment can transmit a signal indicating the presence / absence of the landing as a wireless signal, so that it is not necessary to provide an extra wired line. As a result, there are few inconveniences when installing in hospital rooms or nursing homes.

  FIG. 4 is a perspective view showing a state in which a foot detection sensor is installed on the floor surface beside the bed in Embodiment 1 of the present invention. Since the foot detection sensor 1 has the purpose as described in the prior art, it is appropriate to install the foot detection sensor 1 on the floor next to the bed 100 in a hospital, a nursing facility, an elderly facility, or the like. Or it is also suitable to install on the floor surface of the entrance / exit of the sickroom or occupancy room of these facilities.

  Of course, the foot detection sensor 1 should just be installed in various places according to the change of a use purpose.

(First electrode line and second electrode line)
A first electrode line 3 and a second electrode line 4 are mounted inside the mat body 2. The first electrode line 3 and the second electrode line 4 are arranged in parallel, and can generate both a separated state and a contact state.

  FIG. 2 is a schematic diagram of the inside of the mat body in the first embodiment of the present invention. FIG. 2 shows the first electrode line 3 and the second electrode line 4 that are mounted inside the mat body 2. Here, the first electrode line 3 and the second electrode line 4 are incorporated in the mat body 2 in the same shape and having a contrast.

  Here, the 1st electrode wire 3 and the 2nd electrode wire 4 are wire materials formed with the material which has electroconductivity, respectively. The electrode lines are separated from each other and independent. For this reason, in a normal state where no pressure is applied to the mat body 2, the first electrode line 3 and the second electrode line 4 are separated from each other. That is, the first electrode line 3 and the second electrode line 4 are not in electrical contact.

  In the non-contact state, since the first electrode line 3 and the second electrode line 4 are not energized, the first end 31 of the first electrode line 3 and the first end 41 of the second electrode line 4 are energized. The current value due to cannot be detected. Here, each of the first end portion 31 and the second end portion 41 is included in the transmission unit 5, and in a state where the current value due to this energization cannot be detected, the transmission unit 5 has a current value indicating a footing. Is not output as a signal. This is because the second end portion 32 and the second end portion 33 are released, so that there is no energization if there is no contact at any place between the first electrode line 3 and the second electrode line 4. .

  On the other hand, in the applied state in which pressure is applied to the mat body 2, the first electrode line 3 and the second electrode line 4 are in electrical contact at the position where the pressure is applied. By this electrical contact, the first electrode line 3 and the second electrode line 4 which are independent from each other are electrically connected and energized. By this energization, the transmission unit 5 can detect the current value energized by the first electrode line 3 and the second electrode line 4.

  The transmission unit 5 transmits the detected current value as an electrical signal. By this transmission, it is recognized that some pressure is applied to the mat body 2. When the foot detection sensor 1 is installed on the side surface of the bed 100 as shown in FIG. 4, this grasping is performed when a patient sleeping on the bed 100 or a care recipient gets off the bed 100. Next, place the foot on the mat body 2.

  The electric signal in this energization is a landing signal.

  When the foot is on, pressure is applied at the place where the foot is on (pressure applied state). By applying this pressure, the first electrode line 3 and the second electrode line 4 that are independently separated from each other are brought into contact with each other and energized. The first end 31 of the first electrode line 3 and the first end 41 of the second electrode line 4 are built in the transmitter 5. In addition, each of the first end portion 31 and the second end portion 41 is electrically connected to the transmission unit 5. As a result, the first end portion 31 and the second end portion 32 can detect energization in a portion where the first electrode line 3 and the second electrode line 4 are present and can notify the transmission unit 5.

  The transmission unit 5 that has detected the energization transmits the detected electrical signal as a radio signal. This radio signal is a signal that conveys the fact that there has been a footing. Depending on the location and purpose of installation of the foot detection sensor 1, the transmitted foot detection results are used in various ways.

  Each of the first electrode line 3 and the second electrode line 4 is mounted inside the mat body 2 in one form as shown in FIG.

  The first end 31 of the first electrode line 3 is inserted on the transmission unit 5 side and is electrically connected to the transmission unit. The transmission unit 5 can supply power, and the transmission unit 5 can supply current to the first electrode line 3 by this power supply capability.

  Similarly, the first end 41 of the second electrode line 4 is inserted on the transmission unit 5 side and is electrically connected to the transmission unit. The transmission unit 5 can supply power, and the transmission unit 5 can supply current to the second electrode line 4 by this power supply capability.

  As described above, each of the first electrode line 3 and the second electrode line 4 is maintained in an energizable state.

  On the other hand, the second end 32 opposite to the first end 31 of the first electrode line 3 and the second end 41 opposite to the second end 41 of the second electrode line 4 are respectively connected to the mat body 2. Internally released.

  Only when the contact between the first electrode line 3 and the second electrode line 4 occurs due to the released state and the separation between the first electrode line 3 and the second electrode line 4, the transmission unit. 5 can detect energization.

  Here, the mat body 2 has a rectangular shape having a short direction 22 and a long direction 21. Further, it can be folded at the folding line 25. In addition, each of the first electrode line 3 and the second electrode line 4 is provided so that the foot can be reliably detected (so that energization occurs) regardless of where the foot is placed on the mat body 2. It is preferable to have the shape shown in FIG.

  That is, the first electrode line 3 has a plurality of short direction lines 33 along the short direction 22 and 34 along the long direction in the mat body 2. In particular, the longitudinal direction line 34 extends along the longitudinal direction 21, and a plurality of lateral direction lines 33 extend along the lateral direction 22 from the longitudinal direction line 34.

  Similarly, the second electrode line 4 has a plurality of short direction lines 43 along the short direction 22 and 44 along the long direction in the mat body 2. In particular, the longitudinal direction line 44 extends along the longitudinal direction 21, and a plurality of lateral direction lines 43 extend along the lateral direction 22 from the longitudinal direction line 44.

  By having the above shape, each of the first electrode line 3 and the second electrode line 4 is securely and accurately energized even when the mat body 2 is in various places. To detect.

(Energized)
FIG. 3 is a schematic diagram showing energization of the first electrode line 3 and the second electrode line 4 in Embodiment 1 of the present invention.

  The short direction line 33 of the first electrode line 3 and the short direction line 43 of the second electrode line are close to each other with a gap 27 in the thickness direction of the mat body 2. The gap 27 may be formed to face the mat body 2 in the thickness direction as shown in FIG. 3, or the gap 27 is slightly displaced in the plane direction of the mat body 2 as shown in FIG. In addition, the air gap 27 may be included.

  An insulating member may be attached to a part of the gap 27. With this insulating material, in the normal state, the electrical separation between the first electrode line 3 and the second electrode line 4 is reliably realized. For this reason, it is possible to prevent the detection of the landing even though there is no actual landing.

  On the other hand, when a patient or a care patient descends from the bed 100 and puts his / her foot on the mat body 2 or puts his / her foot on the mat body 2 of the landing detection sensor 1 laid on the floor surface, This void 27 disappears. By this disappearance, the first electrode line 3 and the second electrode line 4 can be electrically contacted. This electrical contact is energized, leading to detection of the foot.

  In FIG. 3, the left side shows a normal state. The air gap 27 remains, and the first electrode line 3 and the second electrode line 4 are separated from each other. On the other hand, when the pressure is applied, the gap 27 disappears, and the first electrode line 3 and the second electrode line 4 are in electrical contact. The right side of FIG. 3 shows this electrical contact.

  Note that the gap 27 between the short direction line 33 of the first electrode line 3 and the short direction line 43 of the second electrode line 4 from the structure of the first electrode line 3 and the second electrode line 4 shown in FIG. Suitably, the contact is the center of the pressure detection.

  This is because, in the first electrode line 3 and the second electrode line 4, as shown in FIG. 2, the short direction line 33 and the short direction line 43 are arranged in parallel. Probably, it is appropriate that the contact between the short direction lines 33 and 43 is a starting point of energization.

  However, it goes without saying that the longitudinal lines 34 and 44 may come into contact with each other and become a starting point of energization.

(Detailed structure of the first electrode line and the second electrode line)
It is preferable that the mat body 2 can form an internal space so that the first electrode line 3 and the second electrode line 4 can be separated in a normal state. For this reason, as described above, the inner space is easily formed by forming the mat body 2 from a flexible material.

  Alternatively, the outer periphery of the mat body 2 is sealed, but may be configured to include a certain amount of air so that an internal space is formed during sealing. Alternatively, an internal space may be formed by forming a simple skeleton on the mat body 2.

  By such an internal space, the first electrode line 3 and the second electrode line 4 can be reliably separated in a normal state, and can be reliably in electrical contact in a pressure applied state.

  The first electrode line 3 has a structure in which a plurality of short direction lines 33 are extended and connected at intervals from the longitudinal direction line 34 and the longitudinal direction line 34. The second electrode line 4 has a structure in which a plurality of short direction lines 43 are extended from the longitudinal direction line 44 and the longitudinal direction line 44 so as to be paired with the first electrode line 3.

  As a result, the longitudinal line 34 of the first electrode line 3 and the longitudinal line 44 of the second electrode line 4 are separated from each other in the thickness direction (there may be a difference in the plane direction) inside the mat body 2. However, electrical contact is possible in a pressure-applied state.

  Similarly, each of the short direction line 33 of the first electrode line 3 and each of the short direction line 34 of the second electrode line 4 may be different in the thickness direction (planar direction may be different) in the mat body 2. ), And can be electrically contacted in a pressure-applied state. That is, it has a similar corresponding positional relationship.

  On the premise of such a positional relationship between the first electrode line 3 and the second electrode line 4, when pressure such as a foot is applied to the outside of the mat body 2, the first electrode line 3 and the second electrode line 4 Some are electrically connected. As a result, the transmitter 5, the first electrode line 3, the second electrode line 4, and the contact portion are connected in a loop shape in a pressure application state.

  An energized state is formed by this loop connection. The transmission unit 5 detects this energized state, generates a landing signal, and transmits it as a radio signal.

  Although different from FIG. 2, the first electrode line 3 and the second electrode line 4 may have a loop shape along the short direction 22 and the long direction 21 inside the mat body 2.

  Due to the positional relationship between the first electrode line 3 and the second electrode line 4 as described above, the foot detection sensor 1 can detect and notify the foot contact after detecting the pressure application state.

  FIG. 5 is a schematic diagram showing a state in which the user in the first embodiment of the present invention gets off the bed and sits on the foot detection sensor.

As described above, the user 200 gets off the floor from the side of the bed 100. The floor detection sensor 1 is laid on the floor as shown in FIG. If the user 200 normally gets off the bed 100, the foot gets on the mat body 2. When this foot is on, a pressure application state in which pressure is applied to a part of the mat body 2 occurs. In the portion to which this pressure is applied, the first electrode line 3 and the second electrode line 4 are contacted and energized.
By this contact / energization, the transmitter 5 can detect the pressure caused by the foot and can transmit the detected foot signal.

  Further, the first electrode line 3 and the second electrode line 4 are provided with longitudinal direction lines 34 and 44 at the end in the longitudinal direction 21 of the mat body 2, and the first electrode line 3 and the second electrode line 4 are composed of the mat body. A plurality of short direction lines 33 and 43 are provided along the two short directions 22 like a skeleton. With this structure, it is possible to detect reliably and with high accuracy regardless of where the mat body 2 is placed.

  Further, coupled with the flexibility of the mat body 2, the mat body 2 incorporating the first electrode line 3 and the second electrode line 4 can be easily folded (folded around the short direction). Furthermore, even if the stepping is repeated, the structure of the first electrode line 3 and the second electrode line 4 that becomes the skeleton of the mat body 2 allows the strength and durability of the foot detection sensor 1 to be used. Improves.

  (Embodiment 2)

  In the second embodiment, other structural features of the first electrode line 3 and the second electrode line 4 will be described.

  As shown in FIG. 2, the first electrode line 3 and the second electrode line 4 inside the mat body 2 of the foot detection sensor 1 according to the second embodiment of the present invention are configured to be paired with each other. Have.

  The first electrode line 3 has a longitudinal line 34 along the longitudinal direction 21. The longitudinal line 34 starts from the first end 31 and extends along the longitudinal direction 21. A plurality of short direction lines 33 extend along the short direction 22 from a plurality of locations of the longitudinal direction lines 34. That is, the short direction line 33 extends toward the opposite longitudinal direction 21 from each of a plurality of locations along the longitudinal direction line 34.

  Here, among the plurality of short direction lines 33, the short direction line 33 farthest from the first end portion 31 has the tip end as the second end portion 32. The second end portion 32 is in a released state, and the current from the first end portion 31 that receives the current at the transmission unit 5 is released at the second end portion 32. This is the same at the tip of the other short direction line 33, and current circulation does not occur only in the first electrode line 3.

  Here, the extension of the short direction line 33 from a plurality of locations of the longitudinal direction line 34 of the first electrode line 3 is configured with constant or indefinite (different) intervals. That is, each of the adjacent short direction lines 33 has a certain interval. This interval is preferably not more than a predetermined value. If the predetermined value is too large, pressure is applied only between the electrode wires when a person steps down from the bed 100 and steps on the mat body 2 when installed next to the bed 100 as shown in FIG. Will not be energized. As shown in FIG. 5, the user 200 gets off the bed 100 and sits on the mat body 2. In this footing, the area of the portion to which pressure is applied is determined by the length and width of the foot.

  For this reason, when the space | interval of the short direction line 33 is too wide, the contact and electricity supply with the 1st electrode line 3 and the 2nd electrode line 4 cannot be implement | achieved by the area of the pressure provision part by this leg | foot. If it becomes like this, the detection accuracy of the foot detection sensor 1 will fall.

  For this reason, it is preferable that the space | interval of the transversal direction line 33 is below a predetermined value. On the other hand, if the predetermined value is too small, pressure due to a fallen object other than the foot may be detected as a foot signal. This also causes a decrease in the accuracy of the landing detection.

  As described above, the predetermined value of the interval between the short direction lines 33 may be calculated from the length and width of a general human foot. In some cases, it is also effective to change the interval according to the user 200.

  Similarly, the second electrode line 4 has a longitudinal line 44 along the longitudinal direction 21. The longitudinal line 44 starts from the first end 41 and extends along the longitudinal direction 21. A plurality of short direction lines 43 extend along the short direction 22 from a plurality of locations of the longitudinal direction lines 44. That is, the short direction line 43 extends toward the opposite longitudinal direction 21 from each of a plurality of locations along the longitudinal direction line 44. As shown in FIG. 2, this extension is a configuration that is paired with the extension of the short direction line 33 of the first electrode line 3.

  Here, among the plurality of short direction lines 43, the tip of the short direction line 43 farthest from the first end portion 41 becomes the second end portion 42. The second end 42 is in a released state, and the current from the first end 41 that receives current at the transmitter 5 is released at the second end 42. This is the same at the tip of the other short direction line 43, and current circulation does not occur only in the first electrode line 3.

  Here, the extension of the lateral direction line 43 from a plurality of locations of the longitudinal direction line 44 of the first electrode line 3 is configured with constant or indefinite (different) intervals. That is, each of the adjacent short direction lines 43 has a certain interval. This interval is preferably not more than a predetermined value. If the predetermined value is too large, pressure is applied only between the electrode wires when a person steps down from the bed 100 and steps on the mat body 2 when installed next to the bed 100 as shown in FIG. Will not be energized. As shown in FIG. 5, the user 200 gets off the bed 100 and sits on the mat body 2. In this footing, the area of the portion to which pressure is applied is determined by the length and width of the foot.

  For this reason, when the space | interval of the short direction line 43 is too wide, contact and electricity supply with the 1st electrode line 3 and the 2nd electrode line 4 cannot be implement | achieved by the area of the pressure provision part by this leg | foot. If it becomes like this, the detection accuracy of the foot detection sensor 1 will fall.

  For this reason, it is preferable that the space | interval of the short direction lines 43 is below a predetermined value. On the other hand, if the predetermined value is too small, pressure due to a fallen object other than the foot may be detected as a foot signal. This also causes a decrease in the accuracy of the landing detection.

  As described above, the predetermined value of the interval between the short direction lines 43 may be calculated from the length and width of a general human foot. In some cases, it is also effective to change the interval according to the user 200. The interval between the short direction lines 43 of the second electrode lines 4 may be determined in the same manner as in the case of the first electrode lines 3.

  In addition, it can energize and can detect a foot by the contact in the pressure application state of the 1st electrode line 3 and the 2nd electrode line 4. For this reason, it is preferable that the short direction lines 33 and 43 of the first electrode line 3 and the second electrode line 4 are arranged close to each other so as to overlap each other.

  (Embodiment 3)

  Next, a third embodiment will be described. In the third embodiment, details and additional functions of the transmission unit 5 will be described.

  FIG. 6 is an internal block diagram of a transmission unit according to Embodiment 3 of the present invention.

  The transmission unit 5 includes a control unit 51 that transmits a landing signal generated by energization as a radio signal, a power supply unit 52 that supplies power to the control unit 51, the first electrode line 3, and the second electrode line 4, and a power supply unit A storage battery storage unit 53 that stores a storage battery serving as a power source of 52.

  The storage battery can be anything as long as it is a variety of commercially available small and lightweight storage batteries. The storage battery storage unit 53 stores this storage battery in a replaceable manner, so that power supply can be continuously realized.

  In particular, a current needs to be supplied to the first end 31 of the first electrode line 3 and the first end 41 of the second electrode line 4. The storage battery supplies current to each of the first end portions 31 and 41 via the power supply unit 52.

  The transmission unit 5 includes a light emitting unit that indicates the remaining amount of power of the storage battery stored in the storage battery storage unit 53 on the outer surface thereof. For example, an LED lamp is provided, and the remaining power of the storage battery is indicated by the brightness and color of the light of the LED lamp.

  Note that not only the transmitter 5 but also a receiver 55 to be described later may have a light-emitting unit that indicates the remaining power of the storage battery, or light emission that issues a detection result of the footing or the mat body or some warning. May have a part.

  Administrators such as hospitals and nursing care facilities as well as the user 200 can check the remaining power of the storage battery by checking the light emitting unit, and check whether the operation of the foot detection sensor 1 can be performed reliably. Can be confirmed.

  For this reason, it is also preferable that the light emitting unit is capable of adjusting at least one of luminance and chromaticity in order to indicate the degree of remaining storage battery. For example, the ease of notification to the user 200 or the like can be realized in such a manner that the higher the luminance, the greater the remaining amount of the storage battery, or the greater the blueness of the chromaticity, the greater the remaining amount of the storage battery.

  In addition, the foot detection sensor 1 is often used in hospitals, nursing facilities, and the like. When used in such places, multiple people often live in the same room. For this reason, it is uncomfortable for a person in the same room that the light emitting unit emits light with high luminance or unpleasant chromaticity at night or at bedtime.

  For this reason, it is also suitable that the light emission part can reduce at least one of a brightness | luminance and chromaticity at least at the time of nighttime and bedtime. For example, a time sensor or an external illuminance sensor is provided, and the light emitting unit spontaneously reduces at least one of luminance and chromaticity.

  This reduction can prevent the above-mentioned discomfort.

  (Embodiment 4)

  Next, a fourth embodiment will be described.

  As shown in FIG. 1, the transmission unit 5 is preferably provided at the end of the mat body 2 in the longitudinal direction 21. By being provided at such a position, when the foot detection sensor 1 is installed on the bed 100 as shown in FIG. 4, the transmission unit 5 can be positioned on the bed 100 side. For this reason, it is hard to get involved in the problem that the family who walks around the bed 100, a medical staff, etc. step on the transmission part 5, or get caught in the transmission part 5.

  Of course, there is a merit that failure and damage due to the impact of the transmitter 5 can be prevented.

  Moreover, when the transmission part 5 is provided in the edge part of the longitudinal direction 21, when the mat main body 2 is folded, the transmission part 5 does not become obstructive of folding. Of course, after folding, the transmitting part 5 at the end is in a state of popping out, so that storage and transportation become easy. Of course, the fear of damaging the transmitter 5 with the mat body 2 can be reduced.

  The transmitter 5 may be provided at the end in the short direction 22.

  (Embodiment 5)

  Next, a fifth embodiment will be described.

  FIG. 7 is a back view of the foot detection sensor according to Embodiment 5 of the present invention. FIG. 7 shows a state where the landing detection sensor 1 is viewed from the back side. For this reason, the back surface 28 of the mat body 2 is visible.

  Usually, as shown in FIG. 4 and the like, the back surface 28 is installed so as to contact the floor surface. By this installation, the surface becomes the upper side, and the foot detection sensor 1 can exert its function.

  Here, the transmission unit 5 is provided at the end of the mat body 2 as described in the fourth embodiment. As described in FIG. 5, the transmission unit 5 includes the storage battery storage unit 53 that stores the storage battery. The storage battery needs to be replaced. For this reason, a part of the housing of the transmission unit 5 includes an opening / closing unit, and the storage battery stored in the storage battery storage unit 53 can be replaced by opening the opening / closing unit.

  In FIG. 7, an opening / closing unit 55 is provided on the back surface of the transmission unit 5. Each time the user or the administrator replaces the storage battery, the user or administrator turns over the vicinity of the transmission unit 5 and performs an opening / closing operation of the opening / closing unit 55 on the back surface.

  However, as shown in FIG. 2, the first electrode line 3 and the second electrode line 4 extend from the transmission unit 5. In particular, in the linear shape along the short direction of the transmitter 5, the short direction line 33 of the first electrode line 3 and the short direction line 43 of the second electrode line 4 are incorporated.

  For this reason, when the vicinity of the transmission unit 5 is turned over, the vicinity of the transmission unit 5 of the mat body 2 is inevitably bent. When this oblique bending is repeated, loads on the built-in first electrode line 3 and second electrode line 4 are repeatedly generated.

  In order to prevent damage and wear of the first electrode wire 3 and the second electrode wire 4 built in the mat body 2 due to such repeated loads, the mat body 2 is mounted at a position where the transmitter 5 is mounted. It is preferable that the reinforcing member 7 is provided along the direction extending from the transmission unit 5.

  The reinforcing member 7 may be formed of a material such as resin, vinyl, vinyl chloride, flexible metal or alloy, or high-strength fabric. This is because these materials do not impair the usability of the mat body 2 or damage the floor surface while serving as a reinforcement.

  Further, as shown in FIG. 7, it is preferable that the reinforcing member 7 is attached over the entire length direction of the mat body (here, the short direction 22) from the attachment position where the transmission unit 5 is attached. is there.

  With such an attachment method, when the mat body 2 is turned over by replacement of the storage battery or the like, the entire direction in which the reinforcing member 7 extends can be turned over. By being easily turned over along the whole, unnecessary load is reduced on the first electrode wire 3 and the second electrode wire 4 inside the mat body 2, and damage and wear can be prevented.

  As a result, it is possible to improve the durability of the mat body 2 and the first electrode wire 3 and the second electrode wire 4 mounted therein by replacing the storage battery or repairing the transmitter 5.

  (Embodiment 6)

  Next, a sixth embodiment will be described. FIG. 8 is a schematic diagram of a landing detection sensor according to Embodiment 6 of the present invention. A part of the first electrode line 3 and the second electrode line 4 inside the mat body 2 is shown in a visible state.

  In the transmitter 5, the foot detection sensor 1 may be placed on the floor next to the bed 100 as shown in FIG. 4. In this case, depending on the position of the bed 100, the transmission unit 5 may be positioned on the bed 100 side or may be positioned on the side far from the bed 100.

  In the latter case, the transmission unit 5 is located in a place close to a human traffic line in a hospital room or the like, and the transmission unit 5 may be stepped on or stepped on. The transmission unit 5 is a device including an electronic component or a wireless element that transmits a detection signal that is a wireless signal.

  If such a device is stepped on or kicked, it may cause a failure. Even when the transmitter 5 is located on the side close to the bed 100, there are cases where it is located on the head of the bed 100 and where it is located on the foot. In the latter case, the user 200 may step on the transmission unit 5 when getting off the bed 100. In this case as well, a failure of the transmitter 5 may occur.

  In order to cope with such a problem, it is appropriate that the mat body 2 and the transmission unit 5 are reversible by rotating relative to each other. Since the upper side of the transmission unit 5 can be reversed by this rotation, the position of the transmission unit 5 can be set to the opposite side in the longitudinal direction 21 of the mat body 2.

  For example, in the case of the landing detection sensor 1 shown in FIG. In this state, the foot detection sensor 1 can be installed so that the transmitter 5 is located on the left side of FIG.

  On the other hand, when the transmission unit 5 rotates, in FIG. 8, the back side of the transmission unit can be seen in the table of FIG. In this case, the mat body 2 is turned over and the foot detection sensor 1 is installed. In other words, the landing detection sensor 1 can be installed so that the transmitter 5 is positioned on the right side of FIG.

  This switching leads to realization of switching between the head side and the foot side in the bed 100. Furthermore, it also leads to switching between the inside and the outside of the bed 100. As a result, it is possible to reduce the stepping or kicking of the transmission unit 5 due to human walking or the like as described above.

  In order to realize such easy rotation of the transmission unit 5, as shown in FIG. 8, the first end 31 of the first electrode line 3 connected to the transmission unit 5 and the first of the second electrode line 4. The end portion 41 is disposed approximately at the center of the end portion where the transmitting portion 5 faces the mat body 2. With such an arrangement, the transmission unit 5 can be easily rotated around the first end 31 and the second end 41 as axes.

  In other words, the transmission unit 5 is connected to the mat body 2 only at the penetrating portion between the first end portion 31 and the second end portion 41, and the other portions are separated from the mat body 2. By this connection and separation, the transmitter 5 can easily rotate with the first electrode line 3 and the second electrode line 4 with respect to the first end 31 and the second end 41 as a reference axis (mat body). 2).

  As a result, with respect to the mat body 2, the transmission unit 5 can reversibly front and back.

  (Embodiment 7)

  Next, a seventh embodiment will be described.

  The transmission unit 5 operates with a storage battery. At this time, an AC power supply may be required in addition to the storage battery depending on the internal electrical elements and electrical circuit structure. At this time, it is not preferable in terms of safety that the transmission unit 5 includes an adapter that converts AC power into DC power, a power cord connected thereto, and the like.

  For this reason, it is preferable that the transmission part 5 incorporates the AC-DC conversion part. As a result, problems such as a power cord do not occur.

  (Embodiment 8)

  The landing detection sensor 1 further includes a reception unit that receives a landing signal from the transmission unit. Here, the receiving unit may be operated by only the storage battery as in the transmission unit, may be operated by mixing the storage battery with an AC power supply, or may be operated only by the AC power supply. For this reason, when the receiving part 50 requires operation | movement with AC power supply, it is preferable to incorporate the AC-DC conversion part. As a result, problems such as a power cord do not occur.

  FIG. 9 is a front view of a receiving unit according to Embodiment 7 of the present invention. The receiving unit receives a landing signal transmitted from the transmitting unit 5 as a radio signal. For example, the receiving unit 50 is installed on a bed 100 in a hospital room, and may receive a radio signal from the transmitting unit 5 on the floor, or may be installed on a wall or a door to receive it. .

  The receiving unit 50 receives the received radio signal. Since the signal is a landing signal, for example, the receiving unit can recognize a state in which a patient who is supposed to be sleeping on the bed 100 or a care recipient has gone out of the way or hesitated.

  For this reason, as shown in FIG. 9, the receiving unit 50 includes a light emitting unit 51, a sound generating unit 52, and the like, and can indicate that a landing signal has been received.

  For this reason, the landing signal received by the receiving unit 50 is transmitted to the nurse station or the management department of the hospital. Or, it is transmitted to the management department or family in the care facility. The manager and family who have received this communication can rush to the hospital room and take action as if there were any problems with the patient or the care recipient.

  Such an immediate response brings a sense of security to patients and care recipients, and also brings peace of mind to families. In addition, there is a merit that it becomes easy for the management side to take appropriate measures, and the management system can be enhanced. If the management system can be improved, the managers can work more efficiently and can save medical and nursing costs.

  Thus, the landing detection sensor 1 of the present invention transmits the landing signal as a radio signal in the order of the transmission unit 5, the reception unit 50, and the management department. By this transmission, the receiving unit 50 can issue a warning signal to at least one management department of a hospital, a care facility, an elderly facility, and a hospice. As described above, since this warning signal can promptly cause a response in the management department, establishment of a safety system for patients in the management department can be realized.

  As shown in FIG. 10, the receiving unit 50 can receive the landing signals from the plurality of transmitting units 5 simultaneously, in parallel, and individually. FIG. 10 is a block diagram showing the relationship between the foot detection sensor and the receiving unit according to the eighth embodiment of the present invention.

  As shown in FIG. 10, two landing detection sensors 1 are installed. Such installation is performed when there are a plurality of subjects in one hospital room.

  In FIG. 10, a landing detection sensor 1A and a landing detection sensor 1B are installed. The landing detection sensor 1A includes a transmission unit 5A. The landing detection sensor 1B includes a transmission unit 5B. The receiving unit 50 can receive the landing signals from both of the two transmitting units 5A and 5B as radio signals. The signals can be received at the same time and can be distinguished from each other, or the signals can be received at different times and the signals from which can be distinguished. The distinction may be realized by time division (TDA) or frequency division (FDM), for example.

  Of course, when the receiving unit 50 subsequently outputs a warning signal to the management department, the receiving unit 50 distinguishes whether the signal is a landing signal from the transmitting unit 5A or a landing signal from the transmitting unit 5B. Can be output.

  Of course, unlike FIG. 10, three or more landing detection sensors 1 may be handled by one receiving unit 50.

  The receiving unit 50 may include a light emitting unit that indicates the remaining amount of power of the storage battery stored in the storage battery storage unit 53 on the outer surface thereof. For example, an LED lamp is provided, and the remaining power of the storage battery is indicated by the brightness and color of the light of the LED lamp. Here, both the transmission part 5 and the receiving part 50 may be provided with the light emission part which shows the electric power remaining amount of a storage battery, or any one may be provided. Here, it demonstrates that the receiving part 50 is provided with the light emission part which shows the electric power residual amount of a storage battery.

  Administrators such as hospitals and nursing care facilities as well as the user 200 can check the remaining power of the storage battery by checking the light emitting unit, and check whether the operation of the foot detection sensor 1 can be performed reliably. Can be confirmed.

  For this reason, it is also preferable that the light emitting unit is capable of adjusting at least one of luminance and chromaticity in order to indicate the degree of remaining storage battery. For example, the ease of notification to the user 200 or the like can be realized in such a manner that the higher the luminance, the greater the remaining amount of the storage battery, or the greater the blueness of the chromaticity, the greater the remaining amount of the storage battery.

  In addition, the foot detection sensor 1 is often used in hospitals, nursing facilities, and the like. When used in such places, multiple people often live in the same room. For this reason, it is uncomfortable for a person in the same room that the light emitting unit emits light with high luminance or unpleasant chromaticity at night or at bedtime.

  For this reason, it is also suitable that the light emission part can reduce at least one of a brightness | luminance and chromaticity at least at the time of nighttime and bedtime. For example, a time sensor or an external illuminance sensor is provided, and the light emitting unit spontaneously reduces at least one of luminance and chromaticity.

  This reduction can prevent the above-mentioned discomfort.

  As described above, with the configuration as in the eighth embodiment, it is possible to improve the efficiency of the overall configuration of a hospital, facility, etc. by using a single receiving unit 50 to support a plurality of foot detection sensors 1. .

  In the present specification, as the landing signal, the landing detection sensor 1 detects the landing, and the detected signal is described as the landing signal. However, it is not intended to exclude cases where the user is a prosthetic leg or touches the foot detection sensor 1 with the upper body. If the person who achieves the purpose that the management side can recognize problems such as movement, dropping, and trapping from a bed that is not the purpose, it is not intended to limit the detection of landing by the foot, but detection by the same operation The present invention also includes.

  Note that the foot detection sensor and the safety management device described in the first to eighth embodiments are examples for explaining the gist of the present invention, and include modifications and alterations without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Leg detection sensor 2 Mat | matte body 3 1st electrode line 31 1st edge part 32 2nd edge part 33 Short direction line 34 Longitudinal line 4 2nd electrode line 41 1st edge part 42 2nd edge part 43 Short Direction line 44 Longitudinal direction line 5 Transmitter 51 Control unit 52 Power supply unit 53 Storage battery storage unit 7 Reinforcing material 50 Reception unit

Claims (13)

A mat body having flexibility and a short side direction and a long side direction;
A first electrode wire mounted inside the mat body;
A second electrode wire mounted inside the mat body;
A transmitter that is attached to the mat body and transmits an electrical signal;
The first electrode line and the second electrode line are separated from each other in a normal state in which no pressure is applied to the mat body, and the pressure is applied in a pressure application state in which pressure is applied to the mat body. Can be contacted at the given position,
A first end of the first electrode line is electrically connected to the transmitter; a second end of the first electrode line is in an open state;
A first end of the second electrode line is electrically connected to the transmitter; a second end of the second electrode line is in an open state;
In the pressure application state, at least a part of the first electrode line and the second electrode line come into contact with each other to enter an energized state, and the transmitter transmits a landing signal indicating that the energized state has been established as a radio signal. Send
Each of the first electrode line and the second electrode line includes a plurality of short direction lines along the short direction and the plurality of short direction lines in the longitudinal direction in the mat body. have a longitudinal line to be connected,
The mat body has a fold line along the short direction,
The first electrode line and the second electrode line have a loop shape along the short side direction and the long side direction inside the mat body,
The transmitter is attached and attached to an end of the mat body,
The mat body further includes a reinforcing member along a direction extending from the transmission unit at a mounting position where the transmission unit is mounted,
The reinforcing member can be turned over to match the entire extending direction of the mat body when the transmitting portion is turned upside down at the mounting position.
Each of the first end portion of the first electrode line and the first end portion of the second electrode line connected to the transmission unit is substantially at the center of the end portion of the transmission unit facing the mat body. Connected
And the transmission unit, based on the first end of the first end and the second electrode lines of the first electrode line connected to the substantially central, Ru rotatable der respect to the mat body , Foot detection sensor. Said mat body, bed next to the floor and is installed in the doorway of a room to at least one claim 1 Symbol placement of Chakuashi detection sensor. The landing detection sensor according to claim 1 or 2 , wherein the mat body forms an internal space so that the first electrode line and the second electrode line are separated from each other in the normal state. Each of the first electrode line and the second electrode line is connected to the transmission unit at the first end, so that the transmission unit, the first electrode line, and the second electrode in the pressure application state. It becomes energized by the loop of the wire and contact part,
And the transmission unit, detects the energized state, the deposition transmits feet signal, Chakuashi detecting sensor according to any of claims 1 to 3. The landing according to any one of claims 1 to 4 , wherein each of the second end portion of the first electrode line and the second end portion of the second electrode line is released inside the mat body. Detection sensor. The transmitter is
A control unit for transmitting the landing signal;
A power supply unit for supplying power to the control unit;
Having a battery housing part for housing a battery as a power source of the power supply unit, Chakuashi detecting sensor according to any of claims 1 to 5. The landing detection sensor according to claim 6 , wherein the transmission unit further includes a light emitting unit that indicates a remaining amount of electric power of the storage battery stored in the storage battery storage unit. The foot detection sensor according to claim 7 , wherein the light emitting unit is capable of adjusting at least one of luminance and chromaticity. Further comprising, Chakuashi detecting sensor according to any one of claims 1 8 in a receiving unit that receives the deposition foot signal from the transmitting unit. The landing detection sensor according to claim 9 , wherein the receiving unit includes an AC-DC converter. The landing detection sensor according to claim 10 , wherein the reception unit is capable of receiving the landing signals from the plurality of transmission units. The landing detection sensor according to any one of claims 9 to 11 , wherein the reception unit further includes a light emitting unit that indicates a remaining amount of electric power of the storage battery stored in the storage battery storage unit. The foot detection sensor according to claim 12 , wherein the light emitting unit is capable of adjusting at least one of luminance and chromaticity.