JP2014104108A - Bed leaving detection device and method for using the bed leaving detection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bed leaving detection device capable of reliably detecting the fact that a patient has left a bed, etc.SOLUTION: A bed leaving detection device 1 includes a panel-type pressure sensor 2, a setting switch 3, and a control circuit 4 to control whether or not to generate a bed leaving warning signal S on the basis of a contact signal output from the panel-type pressure sensor 2 and a setting content of the setting switch 3. A detection surface 27 of the panel-type pressure sensor 2 is divided into a plurality of split detection surfaces 28 that generate contact signals independently of each other. The setting switch 3 sets each of the split detection surfaces 28 to an area where notification is required and an area where notification is not required. The control circuit 4 generates the bed leaving warning signal S when the contact signal from the split detection surface 28 set as the area where notification is required by the setting switch 3 is switched to a predetermined state.

Description

  The present invention relates to a bed leaving detection apparatus using a panel type pressure sensor. More specifically, the present invention can accurately detect the leaving of a monitoring target person such as a patient without detecting a monitoring person such as a nurse by using a panel type pressure sensor laid on the floor surface of the bed or the like. The present invention relates to a bed leaving detection apparatus and a method of using the same. In addition, the present invention relates to a bed leaving detection apparatus that can detect a state where a person to be monitored gets up and a state where the person to be monitored gets off using a panel type pressure sensor laid on the bed, and a method of using the same.

  In hospitals, care facilities, etc., for safety management of patients and care recipients, it is necessary for supervisors such as nurses and caregivers to grasp the behavior of monitored subjects such as patients. For this purpose, a mat sensor made up of a panel type pressure sensor is installed on the floor such as the side of the bed or the entrance / exit of the room. When the person to be monitored leaves the floor and steps on the mat sensor, the mat sensor is turned on, and an alarm is issued to a nurse station or the like via a line such as a nurse call system or a dedicated wireless line. As a result, it is possible to prevent dangers such as an injured person being injured. Patent Document 1 proposes a nurse call system that detects that a patient has stepped out of a bed using a bed leaving sensor placed next to the bed.

  Here, in the mat sensor laid on the side of the bed, the entrance of the room, etc., there is a case where the timing for notifying the bed is late. For example, in a hospital room away from a nurse station or the like, there is a possibility that the patient will leave the room before the nurse goes to the hospital room after an alarm indicating that he / she has left the bed. Therefore, a panel type pressure sensor laid on the bed is used as the bed sensor. Patent Document 2 proposes a wrinkle detection system having a configuration in which a bed leaving sensor that detects that a person on the bed has left the bed is installed on the bed.

  In addition, as a panel type pressure sensor, a contact type membrane sensor having a configuration in which an insulating sheet is sandwiched and conductive sheets are laminated, a capacitance type sensor having a configuration in which an insulating sheet is sandwiched and opposing electrodes are opposed, and the like are known. ing.

JP 2011-156099 A JP 2010-273939 A

  The bed leaving detection apparatus using a conventional panel type pressure sensor has the following problems to be solved.

  First, when used as a mat sensor, it is impossible to determine which of the monitoring subject such as a patient and the monitoring person such as a nurse has stepped on the mat sensor. For this reason, misinformation may occur frequently when nurses, caregivers, etc. step on the mat sensor. Moreover, in order to prevent false alarms from occurring, it is necessary to always take care not to step on the mat sensor by a nurse or the like, which may hinder the original work. Furthermore, when a visitor enters the room, for example, an operation such as disabling the mat sensor is required.

  Next, when used as a bed sensor, the bed sensor cannot discriminate between a state in which a person to be monitored such as a patient gets up from the bed and a state in which the person to get off the bed. For example, when the bed sensor is placed under the shoulder of the patient or the like, the state where the patient or the like has risen can be detected, and when the bed sensor is placed under the buttocks or the like of the patient or the like, the state where the patient or the like has descended from the bed can be detected. However, it is impossible to determine the state where the patient or the like has risen and the state where the patient has got off the bed without changing the position of the bed sensor. In addition, when changing the position of the bed sensor, if the mat sensor is placed at a position where the rising state can be detected, it cannot be detected that the user has got off the bed, and if the mat sensor is placed at a position where it can be detected that the user has got off the bed, The rising state cannot be detected.

  An object of the present invention is to propose a bed leaving detection device that can accurately detect that a person to be monitored gets out of a bed using a panel-type pressure sensor.

  Another object of the present invention is to propose a bed leaving detection device capable of discriminating between a state where a person to be monitored gets up from a bed and a state where the person to be monitored gets off the bed using a panel type pressure sensor.

  In order to solve the above-mentioned problem, the bed detection device of the present invention is a panel type pressure sensor having a detection surface in which contacts that are switched from off to on when pressure is applied are arranged in a plane direction with a predetermined interval and pattern. And a setting switch, and a control circuit for controlling whether or not to generate a bed leaving alarm signal based on the contact signal output from the panel type pressure sensor and the setting content by the setting switch. The detection surface of the panel pressure sensor is partitioned into a plurality of divided detection surfaces that generate the contact signals independently of each other. The setting switch sets each of the division detection surfaces to a notification required region and a notification unnecessary region. The control circuit performs control to generate the bed leaving alarm signal when the contact signal from the division detection surface set in the notification required area by the setting switch is switched to a predetermined state.

  The detection surface of the panel pressure sensor has a plurality of divided detection surfaces. Each division detection surface is set to either a notification required region or a notification unnecessary region by a setting switch. The control circuit regards the contact signal from the divided detection surface set in the notification required area as valid, and controls the generation of the bed warning signal according to the state of the contact signal.

  For example, when using a panel type pressure sensor as a mat sensor, the mat detection sensor is placed on the side of the bed, and the divided detection surface at the position on the bed stepped on by a monitoring target person such as a patient getting off the bed is set as a notification required area Set, and set other areas as notification unnecessary areas. Thereby, it is possible to greatly reduce the probability that a supervisor such as a nurse will accidentally step on the notification-required area, and a bed leaving alarm signal can be generated when the patient gets out of the bed with a high probability.

  In addition, when a panel type pressure sensor is used as a bed sensor and the person to be monitored gets up from the bed when the monitor detection signal is to be generated, the setting switch is used to set the portion of the scapula from the shoulder of the person to be monitored. The division detection surface located below is set as a notification required area, and the others are set as notification unnecessary areas. Further, when all of the contact signals output from each of the notification required areas are switched from the on state to the off state by the control circuit, the bed leaving detection signal is generated.

  Further, when it is desired to generate a bed leaving detection signal when the person to be monitored leaves the bed, all of the plurality of divided detection surfaces are set as notification required areas by the setting switch. When all the contact signals output from each of the notification-required areas are switched from the on state to the off state by the control circuit, the bed detection signal is generated.

  In this way, by switching the setting with the setting switch, it is possible to selectively detect the state where the patient or the like has risen from the bed and the state where the patient or the like has fallen from the bed.

  Of course, both states can be detected. In this case, for example, the division detection surface located under the shoulder portion of the patient or the like is set as the first notification required region, and all the division detection surfaces are set as the second notification necessity region. The control circuit determines that the patient or the like has risen from the bed when all of the contact signals output from the division detection surface set in the first notification required area are switched from on to off. In addition, when the contact signal from the division detection surface set in the second notification required area is switched from ON to OFF, that is, when the contact signals from all the division detection surfaces are switched from ON to OFF, the patient or the like Judge that he got out of bed.

  Here, the panel-type pressure sensor suitable for use as a mat sensor includes a sheet on which a circuit pattern including a plurality of the contacts is printed with conductive ink, and an insulating sheet in which a portion corresponding to each contact is an opening. And a conductive sheet laminated on the surface on which the circuit pattern of the sheet is printed with the insulating sheet interposed therebetween. In this case, the circuit pattern is partitioned into a plurality of divided circuit patterns corresponding to each of the divided detection surfaces, and the contact signal is output from each of the divided circuit patterns.

  Further, a panel type pressure sensor suitable for use as a bed sensor has a plurality of divided conductive sheets that are electrically separated so as to correspond to each of the divided detection surfaces, and a portion corresponding to each contact point. An insulating sheet serving as an opening, and a conductive sheet laminated with the insulating sheet sandwiched between the plurality of divided conductive sheets. In this case, the contact signal is output from each of the divided conductive sheets.

  When used as a bed sensor, the divided conductive sheet and the conductive sheet are preferably conductive cloth. The bed sensor provided with the conductive cloth is flexible as a whole, and even when it is laid under the bed sheet, the patient does not feel uncomfortable. In addition, uncomfortable rubbing noise or the like does not occur when a patient or the like moves. Furthermore, the durability is sufficient.

  In order to prevent the bed warning signal from being repeatedly generated unnecessarily, the control circuit, after generating the bed warning signal, until the contact signal in the on state is switched to the off state, It is desirable to perform control that does not generate the bed alarm signal.

It is a schematic block diagram which shows the bed leaving detection apparatus which concerns on Embodiment 1 to which this invention is applied. It is explanatory drawing which shows the detection surface (circuit pattern) of the bed leaving detection apparatus of FIG. It is explanatory drawing which shows the usage example of the bed leaving detection apparatus of FIG. It is a schematic flowchart which shows operation | movement of the bed leaving detection apparatus of FIG. It is a schematic block diagram which shows the bed leaving detection apparatus which concerns on Embodiment 2 to which this invention is applied. It is explanatory drawing which shows the detection surface of the bed leaving detection apparatus of FIG. It is explanatory drawing which shows the usage example of the bed leaving detection apparatus of FIG. It is a schematic flowchart which shows operation | movement of the bed leaving detection apparatus of FIG.

  Hereinafter, embodiments of a bed leaving detection apparatus to which the present invention is applied will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a schematic configuration diagram showing a bed leaving detection apparatus when a panel type pressure sensor is used as a mat sensor. In the figure, the main part of the panel type pressure sensor is shown in an exploded state. FIG. 2 is an explanatory view showing a circuit pattern printed on the surface of the non-conductive sheet of the panel type pressure sensor 2.

  The bed leaving detection apparatus 1 includes a panel type pressure sensor 2 used as a mat sensor, a setting switch 3, and a control circuit 4. The panel-type pressure sensor 2 includes a detection surface in which a large number of contacts that switch from off to on when pressure is applied are arranged in a plane direction with a predetermined interval and pattern, and the basic configuration is generally known. Is.

  The panel-type pressure sensor 2 is, for example, a rectangular one, a non-conductive sheet 22 on which a circuit pattern 21 including a plurality of contacts is printed with conductive ink, and an insulating portion in which a portion corresponding to each contact is a circular opening 23a. The sheet 23 and the surface of the non-conductive sheet 22 on which the circuit pattern 21 is printed are provided with the conductive sheet 24 laminated with the insulating sheet 23 interposed therebetween. The laminated body is sealed from both sides by a resin-made surface protective sheet 25 and a resin-made back surface protective sheet 26.

  In the non-conductive sheet 22, a rectangular area that is slightly smaller than the non-conductive sheet 22 is a detection surface 27 as indicated by a one-dot chain line in FIG. 2. The detection surface 27 is defined by a circuit pattern 21 including a large number of contacts printed on the sheet back surface 22a with conductive ink.

  Here, the detection surface 27 is divided into a plurality of vertical and horizontal, and is a plurality of rectangular detection surfaces 28 (m, n) of the same size (m and n are positive integers, one of which is 2 or an integer greater than or equal to 2). In the illustrated example, twelve divided detection surfaces 28 (1, 1) to 28 (3, 4) are formed (in the following description, these divided detection surfaces may be referred to as divided detection surfaces 28). ). The circuit pattern 21 is divided into a plurality of divided circuit patterns 21 (m, n) corresponding to the respective divided detection surfaces 28.

  Each divided circuit pattern 21 (m, n) has the same configuration, a wiring group 21 a extending from each of a plurality of contacts, a terminal portion 21 b to which the wiring group 21 a is connected, and the terminal portion 21 b toward the control circuit 4. And a wiring portion 21c drawn out. Each contact point is opposed to the conductive sheet 24 on the back surface side through a circular opening 23a of the insulating sheet 23 at a narrow interval. When a portion corresponding to the detection surface 27 is stepped on the surface protection sheet 25, the contact of the divided detection surface 28 including the stepped position is electrically contacted with the conductive sheet 24 on the back side, and the contact is turned on. Become. The contact signal supplied from the terminal portion 21b of the split detection surface 28 including the stepped position to the control circuit 4 is switched from OFF to ON. The control circuit 4 can determine which division detection surface 28 is stepped on from the state of the contact signal.

  Here, the setting switch 3 is used to set each division detection surface 28 to either “notification area” (notification required area) or “not notification area” (notification unnecessary area). When the contact signal from the division detection surface 28 set in the “notification area” is switched from the off state to the on state, the control circuit 4 generates the bed leaving alarm signal S. The bed leaving alarm signal S drives an alarm device installed in a nurse station or the like via a wired or wireless line. Alternatively, a mobile terminal possessed by a supervisor such as a nurse in charge is driven to generate an alarm.

  FIG. 3 is an explanatory diagram showing an example of use of the bed leaving detection device 1. When the bed detection device 1 detects that the patient P has stepped out of the bed 101, the bed getting out warning signal S is transmitted. In this case, the panel type pressure sensor 2 of the bed leaving detection apparatus 1 is installed on the floor surface next to the bed 101.

  The division detection surface 28 of the panel pressure sensor 2 is set by the setting switch 3 as follows, for example. Three division detection surfaces 28 (3, 2), 28 (3, 3), and 28 (3, 4) on the side close to the bed 101 are set as “notification areas” (first division detection surfaces), and the bed The remaining division detection surfaces 28 (1, 1) to 28 (3, 1) away from 101 are set as “non-notification area” (second division detection surface).

  FIG. 4 is a schematic flowchart showing the operation of the bed detection apparatus 1 performed by the control circuit 4. The control circuit 4 monitors the state of the contact signal of each divided detection surface 28 at a constant sampling period (step ST1). When the contact signal switched to the ON state is detected, it is determined whether or not the division detection surface 28 is an “informing area” (steps ST2 and ST3).

  When the patient P gets off the bed 101 and steps on the detection surface 27 of the panel type pressure sensor 2, the contact of the divided detection surface 28 of the stepped portion is turned on, and the contact signal is changed from off to on. The “notification area” is set so as to include an area where the foot of the patient who gets off the bed 101 steps. When it is detected that the contact signal from the division detection surface 28 set in the “notification area” is turned on, the control circuit 4 generates a bed leaving warning signal S (steps ST3 and ST5).

  The division detection surfaces 28 (1, 1) to 28 (3, 1) positioned on the normal flow line of a nurse or the like are set as “regions not to be notified”. Therefore, even if a nurse or the like steps on the panel pressure sensor 2, the bed warning signal S is not output in most cases. Therefore, by appropriately setting the “informing area” and “not informing area” according to the actual state, it is detected that the patient P has got out of the bed 101 with a high probability that there is no practical problem. Thus, the bed warning signal S can be output.

  Here, it is assumed that the patient P gets out of the bed 101, for example, the contact signal from the division detection surface 28 (3, 3) is switched from OFF to ON, and the bed warning signal S is output. In this case, there is a case where the patient P subsequently steps on an adjacent divided detection surface, for example, the divided detection surface 28 (3, 4) with the other foot. In such a case, it is not necessary to output the bed leaving warning signal S repeatedly.

  Therefore, after the patient P steps on one “notification area” and the bed warning signal S is output, the bed warning signal S is not generated until the stepping state of the “notification area” is released. Like that. That is, until the “notification area” that was turned on last time is turned off, the bed warning signal S may not be generated even if another “notification area” is turned on.

  Further, when a nurse or the like cares for a patient, there is a possibility of stepping on a “region not to be notified” and a “region to be notified”. In such a case, it is necessary to prevent the bed leaving warning signal S from being erroneously generated. For this purpose, when the “not-reported area” is turned on, once all the areas (both “notified area” and “not-reported area”) are not turned off, the “notified area” is turned on. However, it suffices if the bed warning signal S is not generated.

  Assuming both of these cases, in this example, when the “region not to be notified” is turned on, once all the regions (both “the region to be notified” and “the region not to be notified”) are not turned off, Even when the “informing area” is turned on, the bed warning signal S is not generated (step ST4).

  In addition, this example is a case where the panel type pressure sensor 2 is installed beside the bed. It is also possible to install the panel type pressure sensor 2 in a place other than this. Even in such a case, the “notification area” and the “not-notification area” may be appropriately set by the setting switch 3 in consideration of the patient flow line, the work flow line of the nurse, and the like. Since the setting can be changed by the setting switch 3, the setting of each division detection surface can be easily switched so that the setting is most suitable in each place.

(Embodiment 2)
FIG. 5 is a schematic configuration diagram showing a bed leaving detection apparatus when a panel type pressure sensor is used as a bed sensor. In the figure, the main part of the panel type pressure sensor is shown in an exploded state. FIG. 6 is an explanatory view showing a detection surface of the panel type pressure sensor.

  The bed leaving detection device 6 includes a panel-type pressure sensor 7 used as a bed sensor, a setting switch 8, and a control circuit 9. The panel-type pressure sensor 7 includes a detection surface in which a large number of contacts that are switched from off to on when pressure is applied are arranged in a plane direction with a predetermined interval and pattern.

  The panel-type pressure sensor 7 is, for example, rectangular, and a plurality of divided conductive sheets 72 (1) to 72 (5) arranged in a planar shape, and a portion corresponding to each contact is a circular opening 73 a. Insulating sheet 73 and a plurality of divided conductive sheets 72 are provided with second conductive sheet 74 laminated with insulating sheet 73 interposed therebetween. The laminated body of this structure is sealed from both sides by the resin surface protective sheet 75 and the resin back surface protective sheet 76.

  The divided conductive sheets 72 (1) to 72 (5) (hereinafter, these may be referred to as the divided conductive sheets 72) are formed, for example, by cutting a single rectangular conductive sheet. The divided conductive sheets 72 are arranged in a state of being electrically separated from each other. In the illustrated example, four divided conductive sheets 72 (1) to 72 (4) having an elongated rectangular shape and one wide divided conductive sheet 72 (5) are provided. Of course, the number and shape of the divided conductive sheets are not limited to this example. For example, as in the case of the first embodiment shown in FIG.

  The divided conductive sheet 72 is formed from a conductive cloth, and the conductive sheet 74 on the back side is also formed from a conductive cloth. Each contact point is constituted by each circular opening 73a of the insulating sheet 73 and the facing portions of the divided conductive sheet 72 and the conductive sheet 74 that are sandwiched and opposed to each other.

  A terminal portion 72a is disposed in each of the divided conductive sheets 72 (1) to 72 (5). Contact signals are output from the divided conductive sheets 72 (1) to 72 (5) to the control circuit 9 through the wiring portions 72 b drawn from the terminal portions 72 a. The contours of the divided conductive sheets 72 (1) to 72 (5) define the detection surface 77, and the surface of each divided conductive sheet is divided into the respective divided detection surfaces 78 (1) to 78 (5) (hereinafter, these May be referred to as a split detection surface 78).

  In the panel type pressure sensor 7, when pressure (load) is applied to a portion corresponding to the detection surface 77 from above the surface protection sheet 75, the contact of the divided detection surface 78 including the portion is in an ON state. become. The contact signal supplied to the control circuit 4 from the terminal portion 72a of the division detection surface 78 is turned on. Conversely, when the pressure is released, the contact of the split detection surface 78 is turned off, and the contact signal is turned off. From the state of the contact signal, the control circuit 9 can determine which divided detection surface 78 is under pressure, or conversely, which divided detection surface 78 is released from the pressure.

  Here, the setting switch 8 is used to set each division detection surface 78 to any one of “an area to be notified when separated” (notification required area) and “an area not to be notified even when separated” (notification unnecessary area). . As will be described below, when the state of the contact signal from the split detection surface 78 set in the “region to be notified when separated” is switched, the control circuit 9 performs the first bed warning signal S1, the first bed warning signal S1, 2 A bed leaving alarm signal S2 is generated. The bed leaving alarm signal S (S1, S2) drives an alarm device installed in a nurse station or the like via a wired or wireless line. Alternatively, a mobile terminal possessed by a supervisor such as a nurse in charge is driven to generate an alarm.

  FIG. 7 is an explanatory view showing a usage example of the bed leaving detection device 6. The bed leaving detection device 6 transmits a first bed warning signal S1 when detecting that the patient P has risen from the bed 101, and outputs a second bed warning signal S2 when detecting that the patient P has dropped from the bed 101. It is possible to operate in the second mode for transmitting and the third mode for detecting both of these and transmitting the first and second bed leaving alarm signals S1 and S2, respectively. In this case, the panel-type pressure sensor 7 of the bed leaving detection device 6 is used as a bed sensor laid under a bed 101 sheet or the like.

(First mode)
In order to generate the first bed detection signal S1 when the patient P rises from the bed 101, a plurality of division detection surfaces 78 in the panel pressure sensor 7 are set by the setting switch 8 as follows. As shown in FIG. 7, the division detection surface located below the portion from the shoulder to the scapula of the patient P, for example, the division detection surfaces 78 (1) to 78 (3) are set as “regions to be notified when leaving”. To do. The other division detection surfaces 78 (4) and 78 (5) are set to “regions that are not notified even if they are separated”.

  When all of the contact signals output from each of the divided detection surfaces 78 (1) to 78 (3) set in the “region to be notified when separated” are switched from the on state to the off state, the control circuit 9 A bed detection signal S1 is generated. Accordingly, it is possible to reliably detect that the patient P has risen without being affected by load movement such as turning over. Moreover, since each area | region should just be set appropriately according to the patient's P body shape etc., adjustments, such as changing the position of the panel type pressure sensor 7, are unnecessary.

(Second mode)
In order to generate the second bed detection signal S2 when the patient P descends from the bed 101 (at the time when the patient P leaves), all of the plurality of divided detection surfaces 78 of the panel-type pressure sensor 7 are “all separated” by the setting switch 8. Set to “Area to be notified”.

  The control circuit 9 generates the second bed detection signal S2 when the contact signals output from all the division detection surfaces 78 are switched from the on state to the off state. Accordingly, it is possible to reliably detect that the patient P has fallen from the bed 101 without being affected by the load movement associated with turning over, temporary rising, or the like.

(Third mode)
In the case where both the state where the patient P gets up from the bed 101 and the state where the patient P gets off the bed 101 are detected and the first and second bed leaving warning signals S1 and S2 are generated at each time point, for example, Set as follows. In order to detect the rising, the division detection surfaces 78 (1) to 78 (3) are set to “first area to be notified when separated” (first notification required area). Further, all the division detection surfaces 78 are set to “second area to be notified when separated” (second notification required area).

  FIG. 8 is a schematic flowchart showing a detection operation in the third mode of the bed detection apparatus 1 performed by the control circuit 9. The control circuit 9 monitors the state of the contact signal of each division detection surface 78 at a constant sampling period (step ST11).

  When the patient P gets up from the bed 101, the pressure (load) of the divided detection surfaces 78 (1) to 78 (3) located under the shoulder periphery of the patient P in the panel pressure sensor 7 is released. Thereby, the contact signal from these division | segmentation detection surfaces 78 (1) -78 (3) switches from the ON state to the OFF state.

  The control circuit 9 gets up when all the contact signals of the divided detection surfaces 78 (1) to 78 (3) set in the “first region to be notified when separated” are switched from on to off (step ST12). The first bed warning signal S1 for informing this is generated (step ST14). Thereby, the nurse or the like can know in advance that the patient P is about to leave the bed 101.

  Next, when the patient P gets up from the bed 101 and descends from the bed 101, the pressure applied to all the divided detection surfaces 78 is released, and the contact signals thereof change from on to off. Therefore, when the contact signal of all the division detection surfaces 78 set to the division detection surface set in the “second region to be notified when separated”, in this example, is switched from the ON state to the OFF state, the control circuit 9 (Step ST13), it is determined that the patient P has got out of the bed 101, and a second bed warning signal S2 is generated (Step ST15).

  Here, in the case of an infant or the like, the position of the division detection surface 78 set as the “first region to be notified when separated” may be appropriately set according to the body shape such as height. Further, it is not necessary to set all the division detection surfaces 78 as the “second region to be notified when separated”, and only the division detection surface under the body of an infant or the like may be set as the region.

  Further, as in the case of the first embodiment, once the bed warning signals S1 and S2 are generated, the divided detection planes that are switched off so that the bed warning signals S1 and S2 are not repeatedly generated. It is desirable not to generate a signal until the contact signal is turned back on again.

DESCRIPTION OF SYMBOLS 1 Bed detection apparatus 2 Panel type pressure sensor 3 Setting switch 4 Control circuit 6 Bed detection sensor 7 Panel type pressure sensor 8 Setting switch 9 Control circuit 21 Circuit pattern 22 Nonelectroconductive sheet 23 Insulating sheet 24 Conductive sheet 25 Surface protection sheet 26 Back surface protection sheet 27 Detection surface 28 Split detection surface 71 Conductive sheet 72 Split conductive sheet 73 Insulation sheet 74 Conductive sheet 75 Front surface protection sheet 76 Back surface protection sheet 77 Detection surface 78 Division detection surface S Exit alarm signal S1 First exit alarm Signal S2 Second bed warning signal

Claims (10)

A panel-type pressure sensor having a detection surface in which contacts that switch from off to on when pressure is applied are arranged in a plane direction with a predetermined interval and pattern;
A setting switch;
A control circuit for controlling whether or not to generate a bed leaving alarm signal based on the contact signal output from the panel type pressure sensor and the setting content by the setting switch;
Have
The detection surface of the panel pressure sensor is partitioned into a plurality of divided detection surfaces that generate the contact signals independently of each other,
The setting switch is for setting each of the division detection surfaces to a notification required region and a notification unnecessary region,
The control circuit, when the contact signal from the division detection surface set in the notification required area by the setting switch is switched to a predetermined state, generates the bed alarm signal. . The panel type pressure sensor
A sheet on which a circuit pattern including a plurality of the contacts is printed with conductive ink;
An insulating sheet having an opening corresponding to each contact;
With respect to the surface on which the circuit pattern of the sheet is printed, the conductive sheet laminated with the insulating sheet interposed therebetween,
With
The circuit pattern is partitioned into a plurality of divided circuit patterns corresponding to each of the division detection surfaces,
The bed leaving detection apparatus according to claim 1, wherein the contact signal is output from each of the divided circuit patterns. The panel-type pressure sensor is a mat sensor laid on the floor where the bed is installed,
The control circuit generates the bed leaving alarm signal when the contact signal output from the division detection surface set in the notification required area by the setting switch is switched from an off state to an on state. The bed detection apparatus described.   The control circuit, after generating the bed leaving alarm signal, until all of the contact signals output from each of the division detection surfaces set in the notification required area and the notification unnecessary area are switched off. The bed leaving detection apparatus according to claim 3, wherein control is performed so as not to generate the bed leaving alarm signal. A method of using the bed leaving detection device according to any one of claims 1 to 4,
The panel type pressure sensor is installed on the floor next to the bed,
Dividing the plurality of divided detection surfaces into a first divided detection surface closer to the bed and a second divided detection surface separated from the bed;
A method of using a bed leaving detection device, wherein the first divided detection surface is set as the notification-needed region, and the second divided detection surface is set as the notification-unnecessary region. The panel type pressure sensor
A plurality of divided conductive sheets that are electrically separated to correspond to each of the divided detection surfaces; and
An insulating sheet having an opening corresponding to each contact;
With respect to a plurality of the divided conductive sheets, the insulating sheets are sandwiched and stacked conductive sheets;
With
The bed leaving detection apparatus according to claim 1, wherein the contact signal is output from each of the divided conductive sheets.   The bed leaving detection apparatus according to claim 6, wherein the divided conductive sheet and the conductive sheet are conductive cloths. The panel type pressure sensor is a bed sensor laid on a bed,
The control circuit, when the contact signal output from the division detection surface set in the notification required area by the setting switch is switched from an on state to an off state, generates the bed leaving alarm signal. The bed leaving detection device according to 6 or 7.   9. The bed leaving detection device according to claim 8, wherein after the bed leaving alarm signal is generated, the control circuit performs control so as not to generate the bed leaving alarm signal until the setting signal in the off state is switched to the on state. A method of using the bed leaving detection device according to any one of claims 6 to 9,
When the first getting-off detection signal is generated as the getting-off detection signal when the person to be monitored gets up from the bed, the monitoring target is selected from among the plurality of divided detection surfaces of the panel pressure sensor by the setting switch. The division detection surface where the portion of the scapula hits from the shoulder of the person is set as the notification required region, the other is set as the notification unnecessary region, and is output from each of the notification required regions by the control circuit. When all the contact signals are switched from the on state to the off state, the first bed detection signal is generated,
When the second getting-off detection signal is generated as the getting-off detection signal when the person to be monitored leaves the bed, the setting switch sets all of the plurality of divided detection surfaces to the notification required area. , The second bed detection signal is generated when all of the contact signals output from each of the notification required areas are switched from an on state to an off state by the control circuit. How to use the device.