JP4674250B2 - Cordless infrared sensor - Google Patents

Description

      The present invention relates to a cordless infrared sensor used for watching that an inpatient or a patient who needs nursing care in a hospital, a facility, or the like has left the bed.

      2. Description of the Related Art Conventionally, a viewing device using an infrared sensor is known as a device for observing hospitalized patients who need nursing or a patient. For example, a sensor for a viewer who is installed in the viewing room and detects the rising of the viewer, a sensor for the viewer who is installed in the viewing room and detects the presence of the viewer, a notification unit, A control device, and the control device is connected to the viewer sensor and the viewer sensor in a wired or wireless manner, and the sensor for the viewer detects the rising of the viewer. Only when a viewer sensor detects the absence of a viewer, a watching device is disclosed in which a notification device is automatically activated by a control device (see, for example, Patent Document 1).

In addition, the human body detection sensor module detects an object to be detected by a pyroelectric infrared sensor when using a battery as a power source, and in order to wirelessly notify that the object to be detected is detected, A clock that uses wireless communication by UWB (ultra-wide band), and further activates the control circuit only when the infrared sensor outputs a signal for detecting the detection target, and realizes communication by the impulse UWB A wireless infrared sensor system for activating a signal oscillation circuit and a wireless signal transmission device and transmitting predetermined data for the purpose of reducing the size and extending the life of a battery is disclosed (for example, see Patent Document 2). .
JP 2008-59487 A JP 2006-58264 A

      The viewing device shown in Patent Document 1 is automatically controlled by the control device only when the sensor for the viewer detects the rising of the viewer and the sensor for the viewer detects the absence of the viewer. This is a viewing device in which the notification means operates. However, since the sensor for the viewer uses the chair for the viewer placed on the side part of the bed or the like as the detection area, even if the viewer is present in the room, it is not in the detection area around the chair. The notification means is activated. Therefore, when the observer is in the hospital room but not in the vicinity of the chair, there is a disadvantage that the notification means is activated. In addition, the observation device is supplied with power from an outlet in the building, and is fixed in the side wall of a hospital room or the like because it is built in a single housing, so there is a problem that there are restrictions on the relocation and movement of beds etc. There was a point.

      Further, the wireless infrared sensor system shown in Patent Document 2 mainly focuses on extending the life of a battery that drives the sensor, and does not describe any sensor installation position or attachment means. Therefore, there has been a problem that no consideration is given to a change in the sensor mounting location or a change in the arrangement of the bed or the like. The present invention was made in order to solve the above-mentioned conventional problems, and while making the entire apparatus cordless, the convenience was greatly improved by detachably attaching it to the bed or the vicinity thereof. is there.

The cordless infrared sensor of the present invention uses a reflective infrared sensor and a motion sensor (pyroelectric infrared sensor) in order to detect the viewer. This cordless infrared sensor is provided in the vicinity of the bed or the bed. The reflective infrared sensor detects a viewer who enters the detection area, and the motion sensor is a pyroelectric infrared sensor, and detects the temperature of the viewer who enters the detection area. Pyroelectric infrared sensor detects temperature difference, so it is ideal for detecting a viewer with body temperature, and detects changes in infrared that occur when a viewer with temperature difference from the surroundings moves. This sensor is characterized by a wide detection area. There is no wavelength dependence on the light of the pyroelectric material, and the infrared ray generated by the viewer has a peak at a wavelength of about 10 μm. Therefore, an optical filter (called a window material) that passes only near this wavelength is used for the pyroelectric material. If it is installed on the front, the influence of extra light can be eliminated. The same area is simultaneously detected using a reflective infrared sensor and a pyroelectric infrared sensor, and the pyroelectric infrared sensor is in a state where the reflective infrared sensor detects a viewer within the detection area for a set time or more. When the temperature of the viewer is detected for a set time or longer, the control circuit transmits an operation signal to the transmitter . As a result, the detection accuracy is remarkably improved because it is not operated except for the care recipient.

The time setting switch is a state in which the control circuit generates an operation signal when the reflective infrared sensor detects the viewer within the detection area and the pyroelectric infrared sensor detects the viewer within the detection area. This sets the time to be issued, and can be set to 1, 2, or 3 seconds. For example, when the time setting switch is set to 1 second, the control circuit outputs an operation signal when the reflective infrared sensor and the pyroelectric infrared sensor detect the cared person in the detection area for 1 second or longer. Note that the time setting of the time setting switch is not limited to 1 to 3 seconds, and can naturally be designed to be set to 4 seconds or more. The cordless infrared sensor of the present invention includes a battery that drives each device such as a reflective infrared sensor, a pyroelectric infrared sensor , a control circuit, and a transmitter.

According to the cordless infrared sensor of the present invention, the reflective infrared sensor and the pyroelectric infrared sensor are configured to detect the same area at the same time, and only when the detection area is shielded and a temperature difference occurs is notified. Therefore, the detection accuracy can be improved by eliminating the operations other than the care recipient. In addition, each device such as a reflective infrared sensor, pyroelectric infrared sensor , control circuit, and transmitter is driven by a battery built into the cordless infrared sensor, preventing the power cord from being caught and the power cord from being broken. can do.

      The cordless infrared sensor of the present invention is characterized in that it is detachably attached to the bed or the vicinity thereof by a locking means such as a universal clamp. The mounting position on the bed is the horizontal beam part, vertical beam part (including the leg part) or flat plate part of the pipe constituting the bed, which makes it easy to reach the desired position according to the shape and structure of the bed. Can be attached and removed. Further, since there is no power cord, it is possible to prevent the power cord from being caught and the power cord from being broken.

When the cordless infrared sensor of the present invention is installed in the bed or in the vicinity of the bed, the reflective infrared sensor and the pyroelectric infrared sensor are configured to simultaneously detect the same area, the detection area is shielded, and the temperature difference Therefore, the detection accuracy can be improved by eliminating the operation by a person other than the care recipient. In addition, each device such as a reflective infrared sensor, pyroelectric infrared sensor , control circuit, and transmitter is driven by a battery built into the cordless infrared sensor, preventing the power cord from being caught and the power cord from being broken. can do.

      The cordless infrared sensor of the present invention can be detachably attached to the bed or the vicinity of the bed by a locking means such as a universal clamp. The attachment position to the bed is a horizontal beam portion, a vertical beam portion, a flat plate portion or the like of the pipe constituting the bed, and the attachment position can be easily determined according to the shape and structure of the bed.

Embodiments of the present invention will be described in detail with reference to the drawings. In addition, in each drawing, the same member is displayed with the same code | symbol. FIG. 1 is a block diagram showing an embodiment of the cordless infrared sensor of the present invention. FIG. 2 is a block diagram showing another embodiment of the cordless infrared sensor of the present invention. FIG. 3 is an explanatory diagram showing a usage state of the cordless infrared sensor of the present invention. FIG. 4 is a perspective view showing a state in which the cordless infrared sensor of the present invention is attached to a side plate of a bed, and FIG. 5 is a perspective view showing a state in which the cordless infrared sensor of the present invention is attached to a bed pipe.

In FIG. 1, a cordless infrared sensor 1 is attached to a bed or the vicinity of the bed, and can be attached to an arbitrary place without being connected to a power wiring arranged in a building. 11, pyroelectric infrared sensor 12, time setting switch 13, control circuit 14, transmitter 15, battery 17, and the like. Further, the operation signal TX wirelessly transmitted from the transmitter 15 is received by an existing nurse call system or the like and is notified by a notifier.

The reflective infrared sensor 11 and the pyroelectric infrared sensor 12 are connected to a control circuit 14, and a time setting switch 13 is assembled to the control circuit 14. The time setting switch 13 sets a time for the control circuit 14 to issue the operation signal TX when the reflective infrared sensor 11 and the pyroelectric infrared sensor 12 detect the viewer within the detection area. In the present embodiment, any one of 1, 2, and 3 seconds can be selected and set. When the time setting switch 13 is set to 1 second, when the reflective infrared sensor 11 and the pyroelectric infrared sensor 12 detect the person to be observed in the detection area for 1 second or more, the control circuit 14 outputs the operation signal TX. ing. It should be noted that the time setting of the time setting switch 13 is not limited to 1 to 3 seconds, and can naturally be designed so that it can be set to 4 seconds or more. The control circuit 14 outputs to the transmitter 15 an operation signal TX to which an ID number (identification code for uniquely identifying an object in a group) that can identify the cordless infrared sensor 1 is added.

The transmitter 15 wirelessly transmits an operation signal TX with an ID number added thereto to an alarm (not shown) provided in an existing nurse call system or the like through the antenna 16. In addition, for the notification by the alarm device, a sound such as a speaker or a buzzer, a display device such as a lamp, an LED, or a monitor, or a combination of these is used. The reflective infrared sensor 11, the pyroelectric infrared sensor 12, the time setting switch 13, the control circuit 14, and the transmitter 15 are driven by a battery 17 incorporated in a casing in which these are integrated.

In FIG. 3, a pipe frame bed 21 is installed in a room such as a hospital room or a nursing facility. A person being viewed (not shown) receives nursing care on a mattress 22 laid on the bed 21. The cordless infrared sensor 1 is normally detachably attached to the horizontal beam 23 of the pipe frame on the foot side of the person being viewed by a locking means such as a universal clip 18 provided on the cordless infrared sensor 1. . Although the detection area A of the cordless infrared sensor 1 cannot be seen with the naked eye, for example, the cordless infrared sensor (reflective infrared sensor and pyroelectric infrared sensor ) is the apex, and the vertical area is located approximately 1800 mm away from the horizontal front. It is a range surrounded by a quadrangular pyramid with a base of a rectangle of about 500 mm in length and about 500 mm in width that is emitted at a depression angle of about 30 degrees. The alignment of the detection area A and the detection direction can be set while confirming with the alignment LED 40 incorporated in the cordless infrared sensor 1.

      The cordless infrared sensor 1 is for observing the floor of the person being watched. Specifically, the cordless infrared sensor 1 detects when the person being watched gets up from the bed. Since the detection area A needs to be set to a height at which the upper body of the head and the like is detected when the watched person gets up, the detection area A should be attached to the crosspiece 23 of the pipe frame on the feet side of the watched person. Is desirable. The cordless infrared sensor 1 is not limited to the horizontal beam 23 of the pipe frame of the bed, but the vertical beam 24 and legs 25 of the bed pipe frame, the doorway of the room, and the foot of the futon in the case of a Japanese room. It can be installed in a department. Further, the cordless infrared sensor 1 is not limited to one, and may be attached to, for example, two portions of the crosspiece 23 and the leg 25 of the pipe frame of the bed.

4 to 5, the cordless infrared sensor 1 includes a reflective infrared sensor 11, a pyroelectric infrared sensor 12, a time setting switch, a control circuit, a transmitter, a battery, and the like that are integrally incorporated in a housing 30. In the lower part of the housing 30, locking means such as the free clip 18 is provided via the connection tool 19. The connection tool 19 has an adjustment function, and the housing 30 can be adjusted to an elevation angle of 150 degrees and a left and right angle of 26 degrees around the axis of the connection tool 19, and the detection area A can be adjusted as appropriate. It has become. The universal clip 18 has a structure in which the arm 20a on both sides sandwiches the flat plate 26 and the horizontal rail portion 23 of the pipe by tightening the set screw 20. 4 shows a state of being attached to the upper end portion of the flat plate, and FIG. 5 shows a state of being attached to the horizontal rail portion of the pipe. Is possible. Changes in the structure and shape of the universal clip 18 and changes such as using a suction cup or a self-supporting stand in place of the universal clip 18 can be appropriately changed according to the mounting location and position.

      In FIG. 2, the cordless infrared sensor 1a is attached to the toilet bowl or the vicinity of the toilet bowl, and can be attached to an arbitrary place without being connected to the power wiring arranged in the building. The reflective infrared sensor 11, It consists of a time setting switch 13, a control circuit 14, a transmitter 15, a battery 17, and the like. Further, the transmission signal TX wirelessly transmitted from the transmitter 15 is received by an existing nurse call system or the like and is notified by a notifier.

The reflective infrared sensor 11 is connected to the control circuit 14, and the control circuit 14 is activated when the reflective infrared sensor 11 detects the viewer within the detection area, and the reflective infrared sensor 11 is viewed. When the person is no longer detected in the detection area, the operation signal TX is issued. Time setting switch 13, when the reflection type infrared sensor 11 is no longer detected in the area detecting an object Nursing viewer, the control circuit 14 is used to set the time to issue an actuation signal TX, in the present reference example 1 , 2 or 3 seconds can be selected and set. When the time setting switch 13 is set to 1 second, the control circuit 14 outputs the operation signal TX if the reflective infrared sensor 11 does not detect the person being viewed in the detection area for 1 second or longer. It should be noted that the time setting of the time setting switch 13 is not limited to 1 to 3 seconds, and can naturally be designed so that it can be set to 4 seconds or more. The control circuit 14 outputs to the transmitter 15 an operation signal TX to which an ID number that can identify the cordless infrared sensor 1a is added.

      The transmitter 15 wirelessly transmits an operation signal TX with an ID number added thereto to an alarm (not shown) provided in an existing nurse call system or the like through the antenna 16. In addition, for the notification by the alarm device, a sound such as a speaker or a buzzer, a display device such as a lamp, an LED, a monitor, or a combination thereof is usually used. The reflective infrared sensor 11, the time setting switch 13, the control circuit 14, and the transmitter 15 are driven by a battery 17 incorporated in a casing in which these are integrated.

That is , the cordless infrared sensor 1a is used by being attached to the toilet bowl or in the vicinity of the toilet bowl, and is configured to output an operation signal TX and transmit it to the alarm device when the viewer lifts his / her waist from the toilet seat. . That is, when the patient is seated on the toilet, the reflective infrared sensor 11 detects and activates the viewer who has entered the detection area. Next, when a certain period of time has elapsed since the reflective infrared sensor 11 no longer detects the person being watched within the detection area, it is assumed that the nurse has stood up from the toilet and an operation signal is issued. Yes.

According to the cordless infrared sensor 1a of the present invention, a predetermined time has elapsed since the reflection-type infrared sensor 11 attached to the toilet or in the vicinity of the toilet detects the care recipient and no longer detects the care recipient in the detection area. Then, it is assumed that the patient has stood up from the toilet, and an operation signal is issued and wirelessly transmitted to the alarm device. Thereby, since it can be known immediately that the nurse has stood up from the toilet seat, it is possible to prevent the nurse from falling over. Further, by driving each device such as the reflective infrared sensor 11 , the control circuit 14, and the transmitter 15 with the battery 17 incorporated in the cordless infrared sensor 1a , it is possible to prevent the power cord from being caught or the power cord from being broken. be able to.

Cordless infrared sensor of the present invention is mainly used for sewing hospitalized patients requiring nursing in hospitals and facilities, and to lifting the futon which the nurses were laid on the bed or floor, to leave from the toilet However, the present invention is not limited to this, and can be widely used as a viewing device in homes and public facilities.

It is a block diagram which shows embodiment of the cordless infrared sensor of this invention. It is a block diagram which shows the reference example of the cordless infrared sensor of this invention. It is explanatory drawing which shows the use condition of the cordless infrared sensor of this invention. It is a perspective view which shows the state which attached the cordless infrared sensor of this invention to the side plate of the bed. It is a perspective view which shows the state which attached the cordless infrared sensor of this invention to the pipe of the bed.

1, 1a Cordless infrared sensor 11 Reflective infrared sensor 12 Pyroelectric infrared sensor (motion sensor)
13 Time setting switch 14 Control circuit 15 Transmitter 16 Antenna 17 Battery 18 Universal clip (locking means)
19 connecting bracket 20 set screw 20a arm 21 bed 22 mattress 23 horizontal beam portion 24 vertical beam portion 25 leg portion 26 flat plate 30 housing 40 LED for alignment
A Detection area TX operation signal

Claims (2)

In a cordless infrared sensor that detects a person being viewed by an infrared sensor and wirelessly notifies the alarm that the person being viewed has been detected,
Set the detection area to a height that detects the upper body of the head when the watched person gets up from the bed,
A reflective infrared sensor for detecting a person entering the detection area;
A pyroelectric infrared sensor that detects the temperature of the viewer entering the detection area;
A time setting switch for setting the detection time of the reflective infrared sensor and the pyroelectric infrared sensor ;
When the reflective infrared sensor detects the viewer within the detection area for a set time or longer , and when the pyroelectric infrared sensor detects the viewer for the set time or longer, an operation signal is transmitted to the transmitter. A control circuit to
A transmitter for wirelessly transmitting an operation signal transmitted from the control circuit to a notification device;
A battery for driving the devices,
The same area is detected at the same time using the reflective infrared sensor and pyroelectric infrared sensor ,
When the reflective infrared sensor detects the viewer within the detection area for a set time or longer , and when the pyroelectric infrared sensor detects the temperature of the viewer for the set time or longer, the control circuit generates an operation signal. Is transmitted to a transmitter. A cordless infrared sensor. The cordless infrared sensor is detachably attached by a locking means in the vicinity of the bed,
The locking means includes a connection tool having an adjustment function capable of adjusting the cordless infrared sensor around an axis of the connection tool in an elevation angle and a left and right direction;
The cordless infrared sensor according to claim 1, wherein the cordless infrared sensor is configured by a free clip having a structure in which a flat plate or a pipe is sandwiched by being connected to the connection tool.

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