JP2016212739A - Watching system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a watching system which can detect and report occurrence of predetermined action of a person such as falling action, and does not require installation work.SOLUTION: A watching system 10 includes: slave machines 100a to 100d which are disposed at positions for a person A requiring nursing care to move around, detects sound generated from the positions to determine whether the person falls from a detection result on the basis of a predetermined criterion, and transmits a determination result to the outside when detecting that the person falls; and a master machine 200 outputs a predetermine alarm on the basis of the determination result, when receiving the determination result from the slave machines.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a monitoring system that detects, for example, that a care recipient has fallen, for example, in a home where a care recipient is present or a care facility such as a nursing home and notifies a person who watches the care recipient.

  Conventionally, a care recipient such as an elderly person carries a terminal with a built-in triaxial acceleration sensor, and the care recipient falls over based on a comparison with a normal reference value of a detection signal by the triaxial acceleration sensor. An apparatus having a function of determining whether or not to report is known (for example, see Patent Document 1).

  However, in the case of the above device, it is necessary for the care recipient to carry the terminal, and the care recipient feels troublesome to carry the terminal and refuses to carry or may forget to carry it. There is.

  Therefore, in order to solve this problem, by installing a pressure distribution detection device in which a number of pressure sensors are arranged on a two-dimensional plane on the entire floor of the room or hallway used by the care recipient, An apparatus for detecting the occurrence of a fall is known (for example, see Patent Document 2).

JP 2013-311 A JP 2013-134544 A

  However, the conventional pressure distribution detection device in which a large number of pressure sensors are arranged on a two-dimensional plane has a problem in that a large-scale construction for laying the device on the entire floor surface is required, which is troublesome.

  In view of the above-described conventional problems, an object of the present invention is to provide a monitoring system that can detect and report the occurrence of a predetermined operation such as a human overturning operation and does not require installation work.

1st this invention is arrange | positioned in the place where the person to watch over moves, detects the sound which generate | occur | produces from the said place, and the person performed predetermined | prescribed operation | movement from the said detection result based on the predetermined | prescribed determination standard If it is determined whether or not the predetermined operation has been performed, a determination device that transmits the determination result to the outside;
And a management device that outputs a predetermined alarm based on the determination result when the determination result is received from the determination device.

Further, according to a second aspect of the present invention, the determination device is disposed in a plurality of different places,
Each of the determination devices arranged in the plurality of different locations has unique identification information for identifying each of the determination devices, and transmits the identification information to the outside together with the determination result.
When the management device receives the determination result and the identification information, the management device determines which of the plurality of determination devices is the determination result transmitted based on the received unique identification information. The monitoring system according to the first aspect of the present invention is characterized in that the predetermined alarm is output in an identifiable manner.

  The third aspect of the present invention is the watching system according to the first or second aspect of the present invention, wherein the management device is a portable device.

Further, in the fourth aspect of the present invention, the predetermined operation is an operation when the person falls,
The predetermined determination criterion is a criterion for determining whether or not the sound has a sound pressure level exceeding a predetermined threshold and has a frequency between 30 Hz and 70 Hz. It is the monitoring system of any one of 1st-3rd this invention.

In the fifth aspect of the present invention, the predetermined operation is an operation when the person opens and closes the door,
The determination device determines whether or not the door has been opened and closed based on the detection result, and when determining that the door has been opened and closed, transmits the determination result to the outside. -A monitoring system according to any one of the third to the present invention.

  The sixth aspect of the present invention is the monitoring of any one of the first to fifth aspects of the present invention, wherein a plurality of the predetermined determination criteria are provided and can be selected. System.

  The seventh aspect of the present invention is the monitoring system according to any one of the first to sixth aspects of the present invention, wherein the determination device detects vibrations of the place itself in addition to the sound. .

  ADVANTAGE OF THE INVENTION According to this invention, while being able to detect and alert | report the generation | occurrence | production of predetermined | prescribed operation | movement, such as a person's fall operation | movement, for example, it can provide the watching system which does not require installation construction.

It is a figure explaining the case where the watching system of one embodiment of the present invention is applied in a general house, and is a schematic plan view of the 1st floor part of a house (A): Schematic block diagram showing the configuration of the first slave unit of the present embodiment, (b): Schematic block diagram showing the configuration of the master unit of the present embodiment (A): The figure which showed typically the output signal of each part of a 1st subunit | mobile_unit when the audio | voice signal of the sound which generate | occur | produces with a microphone was detected, (b): The audio | voice signal of a human fall sound is a microphone. The figure which showed typically the output signal of each part of the 1st cordless handset at the time of being detected by

  Hereinafter, an embodiment of the watching system of the present invention will be described with reference to the drawings.

(Embodiment 1)
First, an overview of the monitoring system 10 according to the present embodiment will be described with reference to FIG.

  FIG. 1 is a diagram for explaining a case where the watching system 10 of the present embodiment is applied to a general house 1 and is a schematic plan view of a first floor portion of the house.

  The monitoring system 10 according to the present embodiment is arranged in various places where it is determined by detection sound that a care recipient A as a person to be watched over falls or opens the front door and goes outside. The first child device 100a, the second child device 100b, the third child device 100c, and the fourth child device 100d, and the parent device 200 carried by the watcher B who watches the care recipient A.

  The four slave units 100a to 100d have identification information unique to each slave unit in advance, and are configured to transmit the determination result to the master unit 200 together with the unique identification information.

  When the distance between the slave unit and the master unit 200 is within a predetermined range (for example, within about 100 m), the master unit 200 is configured to receive a transmission signal from the slave unit.

  In the monitoring system 10 of the present embodiment, as shown in FIG. 1, the first slave unit 100a is placed in the middle of the stairs 1a, and the second slave unit 100b is placed on the floor surface of the dressing room 1b of the bathroom. The third handset 100c is placed on the floor of the toilet 1c, and the fourth handset 100d is fixed to the movable side of the front door (sliding door type) 1d.

  That is, the first child device 100a to the third child device 100c are arranged in a place where the care recipient A is highly likely to fall, and play a role for detecting a person's fall. Moreover, the 4th subunit | mobile_unit 100d plays the role for detecting opening / closing of the door of an entrance.

  Each of the first slave unit 100a to the fourth slave unit 100d of the present embodiment corresponds to an example of the determination device of the present invention, and the master unit 200 of the present embodiment corresponds to an example of the management device of the present invention. The care recipient A of the present embodiment corresponds to an example of a person to be watched according to the present invention.

  Next, the structure of the 1st subunit | mobile_unit 100a and the main | base station 200 is demonstrated using Fig.2 (a)-FIG.3 (b).

  FIG. 2A is a schematic block diagram showing a configuration of the first slave unit 100a, and FIG. 2B is a schematic block diagram showing a configuration of the master unit 200.

  FIG. 3A is a diagram schematically showing output signals of the respective units of the first handset 100a when a sound signal of a normally generated sound is detected by the microphone 101. FIG. () Is the figure which showed typically the output signal of each part of the 1st subunit | mobile_unit 100a when the audio | voice signal of a human fall sound is detected by the microphone 101. FIG.

  The first child device 100a to the fourth child device 100d have the same configuration except that they each have unique identification information. Therefore, the description of the second child device 100b to the fourth child device 100d is as follows. Omitted.

  As shown in FIG. 2A, the first slave unit 100a includes a microphone 101 that detects sound transmitted by air vibration, an amplifier 102 that amplifies an analog audio signal detected by the microphone 101, and an amplifier 102 that amplifies the analog voice signal. A low-pass filter 103 that cuts a frequency component of 100 Hz or more from an analog audio signal (see the analog audio signal 102out1 in FIG. 3A and the analog audio signal 102out2 in FIG. 3B), and an output signal of the low-pass filter 103 (FIG. 3 (a) output signal 103out1 (see output signal 103out2 in FIG. 3 (b)), a signal having a sound pressure level of 65 dB (corresponding to the reference voltage of the comparator) or higher is converted into a pulse signal (digitized) ) And output the comparator 104 and the output signal of the comparator 104 A determination control unit (microcomputer) 105 that determines whether or not a person has fallen by detecting the presence or absence of a predetermined pulse signal from the output signal 104out1 in FIG. 3A and the output signal 104out2 in FIG. When the determination control unit 105 determines that the person has fallen, information indicating that the person has fallen or information indicating that the opening / closing of a door, which will be described later, has been detected, and the unique characteristics of the first slave unit 100a are provided. A wireless device 106 that transmits the identification information to the outside in response to a transmission command from the determination control unit 105 is provided.

  The wireless device 106 includes, for example, a wireless communication circuit (not shown) compliant with the ZigBee (registered trademark) wireless standard, and can wirelessly communicate with the parent device 200 compliant with the ZigBee (registered trademark) wireless standard. It is configured.

  Further, the first slave unit 100a is configured to be able to incorporate a button battery (not shown) for power supply.

  Here, the predetermined pulse signal is a signal having a pulse width of about 7 msec to 17 msec, which includes a component of 30 Hz to 70 Hz that is peculiar to a sound generated when a person falls (person's falling sound).

  Further, in the present embodiment, paying attention to the fact that the sound pressure level of the sound generated when a person falls is changed according to the weight of the person, in the amplifier 102 of the first child device 100a to the fourth child device 100d. A plurality of types of amplification factors are stored in advance in a memory (not shown) inside the slave unit so that switching can be performed according to the weight of the care recipient A. Then, in order to be able to more accurately determine the occurrence of the fall of the care recipient A, an amplification rate switching switch that can select any one of a plurality of amplification factors when installing the slave unit ( (Not shown) is provided in each slave unit. Specifically, the gain switching switch is configured to switch in a direction of increasing the gain as the weight is lighter.

  Further, in this embodiment, instead of determining whether a person has fallen or not, a determination target switching switch (not shown) is provided in each slave unit so that it can be determined whether a door is opened or closed. ing.

  The characteristic frequency component included in the sound generated when the door is opened and closed (door opening and closing sound) is 5 Hz to 20 Hz, and the specific sound pressure level is 70 dB or more, which is generated when a person falls. Distinguishable from sound.

  The opening / closing sound of the door depends on the sound pressure level of the sound generated by opening / closing the door, depending on the type of the door, such as whether the door is an open door type or a sliding door type, or is made of metal or wood. The specific frequency changes.

  Therefore, paying attention to this point, (1) regarding the change of the sound pressure level, the amplification factor in the amplifier 102 of the first slave unit 100a to the fourth slave unit 100d, or the reference voltage of the comparator 104 is plural types (for example, The sound pressure level corresponding to the reference voltage of the comparator 104 used for the hinged door type is 80 dB or more, and the sound pressure level corresponding to the reference voltage of the comparator 104 used for the sliding door type is 70 dB or more), and (2) the frequency Regarding the change, a plurality of threshold values of frequency components to be cut by the low-pass filter 103 (for example, the threshold value of the cut frequency component used for the sliding door type is 10 Hz or more, and the threshold value of the cut frequency component used for the sliding door type is 20 Hz or more) ) And the threshold control of the frequency component to be cut by the low-pass filter 103 A combination of a plurality of pulse widths of the predetermined pulse signal at 105 (for example, the threshold value of the pulse width used for the swing door type is 50 msec to 100 msec, and the threshold of the pulse width used for the sliding door type is 25 msec to 50 msec) A plurality of types of door opening / closing determination criteria are stored in advance in a memory (not shown) inside the slave unit.

  Each slave unit is provided with a door open / close judgment criterion selection switch (not shown) that can select any one of a plurality of door open / close judgment criteria so that the presence / absence of door opening / closing can be determined more accurately. It has been. As a method for selecting the door opening / closing judgment criteria, after attaching to the actual door, a door opening / closing test is tried for each judgment criteria, and the judgment criteria for which the opening / closing is judged most accurately can be selected.

  In the case of determining whether or not a person has fallen in the present embodiment, the threshold value of the cut frequency component in the low-pass filter 103 is 100 Hz or higher, the sound pressure level corresponding to the reference voltage in the comparator 104 is 65 dB or higher, and the determination control unit 105. Various values in the range of about 7 msec to 17 msec of the pulse width in FIG. 1 correspond to an example of the predetermined determination criterion of the present invention.

  Further, in the case of determining whether the door is opened or closed according to the present embodiment, the threshold of the cut frequency component in the low-pass filter 103 is 10 Hz or higher (or 20 Hz or higher), and the sound pressure level corresponding to the reference voltage in the comparator 104 is 80 dB or higher ( Or 70 dB or more) and various values of the pulse width range 50 msec to 100 msec (or 25 msec to 50 msec) in the determination control unit 105 correspond to an example of a predetermined determination criterion of the present invention.

  Further, according to the present embodiment, the amplification factor switching switch, the determination target switching switch, and the door opening / closing determination criterion selection switch are provided with a plurality of predetermined criteria of the present invention and are configured to be selectable. An example.

  Next, as shown in FIG. 2B, the base unit 200 includes (1) a wireless device 201 having a wireless communication circuit (not shown) compliant with the wireless standard of ZigBee (registered trademark), and (2 ) Indicates that the fall of a person included in the transmission signal received by the wireless device 201 from the first slave device 100a, the second slave device 100b, the third slave device 100c, or the fourth slave device 100d is detected. Analyzes information or information indicating that the opening / closing of the door has been detected, and identification information specific to the slave unit, determines from which slave unit the signal is sent, and transmits An analysis control unit that determines whether the information included in the signal is information indicating that the person has fallen or whether the information indicates that the door has been opened or closed, and outputs a predetermined control signal (Microcomputer) 202 and (3) in accordance with a command from the analysis control unit 202 To lights, a first 1LED lamp 203a, the 2LED lamp 203b, and the 3LED lamp 203c, and a 4LED lamp 203d, and a warning buzzer 204 to emit a warning sound in accordance with a command from the (4) analysis control unit 202. For example, when the first handset 100a detects a person's falling sound and transmits it to the base 200, the analysis control unit 202 determines that the signal is the signal from the first handset 100a based on the identification information. It is determined that the information indicates that a fall has been detected, the first LED lamp 203a corresponding to the first slave unit 100a is turned on, and the alarm buzzer 204 is sounded.

  The parent device 200 is provided with a watch on / off switch (not shown). When the watch on / off switch is set to “OFF”, operations related to watching (LED lamp lighting, warning buzzer) are stopped.

  In addition, the base unit 200 is configured to be able to incorporate a button battery (not shown) for power supply, and has a small rectangular parallelepiped shape that can be hung from the neck.

  In the present embodiment, a so-called star-type network configuration is established in which communication is performed between the four slave devices 100a to 100d with the single master device 200 as the center.

  In the present embodiment, the operation when the person falls and the operation when the person opens and closes the door are examples of the predetermined operation of the present invention.

  Next, the operation of the watching system 10 according to the present embodiment and the operation of each unit will be mainly described with reference to FIGS.

  First, the watcher B or the seller of the watch system 10 follows the instructions of the watcher B, and the first handset 100a, the second handset 100b, and the third handset 100c are respectively connected to the stairs 1a and the dressing room. While arrange | positioning on the floor surface of 1b and the toilet 1c, the 4th subunit | mobile_unit 100d is fixed to the movable side of the door (sliding door type) 1d of an entrance with an adhesive or an adhesive tape.

  Here, setting of various switches (determination target switching switch, amplification factor switching switch, door open / close determination criterion selection switch (not shown)) provided in the slave unit will be described.

  In the present embodiment, the first child device 100a to the third child device 100c are arranged for the purpose of detecting a fall sound of a person and watching the fall of the care recipient A. In accordance with the instruction of the watcher B, the seller of the watch system 10 sets the switch for judging object switching of the first handset 100a, the second handset 100b, and the third handset 100c, respectively, whether or not a person has fallen. Set to the judgment side.

  Moreover, since the 4th subunit | mobile_unit 100d detects the opening-and-closing sound of the door 1d, and arrange | positions in order to watch whether the care recipient A has gone out, the watcher B or the said monitoring system 10 In accordance with the instruction of the watchman B, the dealer sets the determination target switching switch of the fourth slave unit 100d to the side for determining whether the door is opened or closed.

  Next, in the present embodiment, the care recipient A has a light weight of about 40 kg, so that the watcher B or the seller of the watch system 10 follows the instructions of the watcher B and the first handset 100a The gain changeover switches of the second slave unit 100b and the third slave unit 100c are switched in the direction of increasing the gain, respectively.

  Further, in the present embodiment, after the fourth slave unit 100d is fixed to the door 1d, the door opening / closing determination criterion selection switch is sequentially switched, and the door 1d opening / closing test is tried for each criterion, so that the door can be opened and closed most accurately. Is set in the door open / close determination criterion selection switch.

  This completes the setting of the various switches.

  On the outer wall surface of the master device 200 where the four LED lamps are arranged, a space for sticking a seal is provided in advance at a position corresponding to each LED lamp. The watcher B or the seller of the watch system 10 attaches a seal describing the installation location of the corresponding slave unit to the space.

  Thereby, the correspondence between the LED lamps 203a to 203d provided in the parent device 200 and the installation location of the child device becomes clear.

  The watcher B starts the watch by putting the watch 200 on the neck, setting the watch-on switch to “ON”.

  During watching, for example, if the care recipient A falls in the toilet 1c, the microphone 101 of the third handset 100c arranged in the toilet 1c detects a person's falling sound and sends it to the amplifier 102. The output signal 102out2 shown in FIG. 3B is sent to the low-pass filter 103, the output signal 103out2 is sent from the low-pass filter 103 to the comparator 104, and the output signal 104out2 is sent from the comparator 104 to the determination control unit 105. Then, the determination control unit 105 determines that the output signal 104out2 has a pulse width of about 7 msec to 17 msec peculiar to a person falling sound, thereby indicating information indicating that the person has fallen. The wireless device 106 transmits the information together with the identification information of the third child device 100c.

  Master device 200 receives a signal from the slave device by wireless device 201 and sends the signal to analysis control unit 202. The analysis control unit 202 analyzes the identification information included in the received signal and determines that it is the third slave unit 100c, thereby sending a signal to the third LED lamp 203c corresponding to the third slave unit 100c. At the same time, the warning buzzer 204 is sent a signal for generating a warning sound.

  As a result, the watcher B who is in another place notices the warning sound and looks at the parent device 200, so the third LED lamp 203c is lit. Recognizing that caregiver A has fallen, he can rush to the toilet.

  Note that the sound generated when the care recipient A opens and closes the door of the toilet 1c does not include a 30 Hz to 70 Hz component peculiar to a person's falling sound. A pulse signal having a pulse width of about 7 msec to 17 msec is not included. Accordingly, the determination control unit 105 determines that the signal output from the comparator 104 does not mean that a person has fallen, and outputs nothing to the radio device 106.

  Therefore, if the care recipient A just opens and closes the door of the toilet 1c, even if the third handset 100c detects the sound, the third handset 100c transmits no signal.

  Therefore, the parent device 200 carried by the watcher B does not emit a warning sound and does not light any LED lamp.

  Next, during watching, for example, when the care recipient A opens the door 1d of the front door and goes out, when the microphone 101 of the fourth slave unit 100d fixed to the door 1d detects the opening / closing sound of the door, An output signal is sent from the comparator 104 to the determination control unit 105 via the amplifier 102, the low-pass filter 103, and the comparator 104. Then, the determination control unit 105 indicates that the door has been opened and closed by determining that the output signal has a pulse width corresponding to the above-described specific frequency component included in the door opening and closing sound. The information is transmitted from the wireless device 106 together with the identification information of the fourth slave device 100d.

  Master device 200 receives a signal from the slave device by wireless device 201 and sends the signal to analysis control unit 202. The analysis control unit 202 analyzes the identification information included in the received signal and determines that it is the fourth slave unit 100d, thereby sending a signal to the fourth LED lamp 203d corresponding to the fourth slave unit 100d. At the same time, the warning buzzer 204 is sent a signal for generating a warning sound.

  As a result, the watcher B who is in another location notices the warning sound and looks at the main device 200, so the fourth LED lamp 203d is lit. Recognizing that caregiver A is going out, he can rush to the entrance.

  As described above, according to the monitoring system 10 of the present embodiment, even if the watcher B is in another place, it is possible to immediately recognize the fall or going out of the care recipient A, so that the burden of care can be reduced and the care required Person can be watched reliably.

  In addition, installation work is not required, and the location of the handset can be easily changed, so the degree of freedom in use is high.

  In addition, according to the present embodiment, the slave radio device 106 is normally kept in a sleep state, is returned when an instruction is issued from the determination control unit 105, and sleeps again after data is transmitted. Since it returns to the state, the power consumption can be kept low, and a single button battery can be used for a long time (about 5 years).

  In the above embodiment, the case where the slave unit configured to capture the vibration of air with the microphone 101 has been described. However, the present invention is not limited to this. For example, in addition to the microphone 101, a piezoelectric vibration sensor (not shown) is provided. The structure provided in the bottom face of the subunit | mobile_unit may be sufficient.

  According to this configuration, for example, the vibration of the floor on which the slave unit is arranged can be detected by the piezoelectric vibration sensor, so that the care recipient A can be watched more reliably. That is, for example, when a handset is placed in a room where a TV is placed, there is a scene where a character falls on the floor in a program being broadcast on the TV, and the falling sound is When detected by the microphone 101, the detection signal by the microphone 101 includes a frequency peculiar to a person's falling sound, but it does not mean that the person actually fell in the room where the child machine was placed. Piezoelectric vibration sensors do not detect floor vibrations. Accordingly, the determination control unit 105 determines that the radio 106 is detected only when both the determination result of the detection signal by the microphone and the determination result of the detection signal by the piezoelectric vibration sensor are detected at the same time. In addition, by adopting a configuration for transmitting information indicating that, for example, it is possible to more reliably watch the care recipient A because it is not erroneously detected that a person has fallen in a television scene. It is possible to reduce the burden on the watcher B due to erroneous detection.

  In the above embodiment, the case where the watching system of the present invention is applied to a general household has been described. However, the present invention is not limited to this, and can be similarly applied to nursing homes where nursing homes or care recipients are present. The same effect as described above is exhibited.

  In the above embodiment, the slave unit and the base unit radio (see reference numeral 106 in FIG. 2A and reference numeral 201 in FIG. 2B) comply with the ZigBee (registered trademark) wireless standard. Although the case of the configuration has been described, the configuration is not limited to this, for example, a configuration conforming to the Wi-Fi wireless standard may be used. In short, in a nursing home such as a general home or a nursing home, Any configuration may be used as long as wireless communication can be performed between the parent devices. Moreover, the structure which can carry out radio | wireless communication to a main | base station at arbitrary timings from a subunit | mobile_unit is more preferable.

  In addition, by configuring the wireless device 106 of the slave device in accordance with the Wi-Fi wireless standard, the master device is a dedicated device constructed to implement the watching system of the present invention on a smartphone or a tablet terminal. You can use it by installing the app.

  Moreover, although the said embodiment demonstrated the case where the number of subunit | mobile_units was four, it may not be restricted to this but may be more than four, and may be few. In that case, the number of LED lamps provided in the parent device may correspond to the number of child devices, or may be provided more than the number of child devices.

  Further, in the above embodiment, a description is given of a configuration in which the LED lamps of base unit 200 are uniformly lit regardless of whether a person's falling noise is detected or a door opening / closing sound is detected. However, the present invention is not limited to this. For example, when the occurrence of a human falling sound is detected, the LED lamp is turned on (or flashes). When the occurrence of a door opening / closing sound is detected, the LED lamp is flashed (or turned on). Thus, the watcher B may be able to immediately discriminate the difference between the two by the difference in lighting or blinking of the LED lamp.

  Moreover, in the said embodiment, the subunit | mobile_unit is equipped with the switch for determination object switching, and has both the function which determines the fall sound of a person, and the function which determines the opening / closing sound of a door, and any one is the said switch However, the present invention is not limited to this. For example, the first slave unit 100a to the third slave unit 100c are dedicated slave units that determine the fall sound of a person, and the fourth slave unit 100d. May be configured as a dedicated handset for determining the opening / closing sound of the door. When realizing this configuration, for example, an exclusive application program is installed in advance on a dedicated handset for determining the falling sound of a person, and a dedicated handset for determining the door opening / closing sound is used in advance. The application program may be installed.

  Moreover, in the said embodiment, the subunit | mobile_unit is equipped with the switch for amplification factor switching, and the structure which can determine more exactly generation | occurrence | production of fall of the care recipient A by changing the said switch according to the weight of the care recipient A However, the present invention is not limited to this. For example, a slave unit in which the amplification factor of the amplifier 102 is fixed to one without including the amplification factor switching switch may be configured. It is good also as a structure which prepares three types of subunit | mobile_units beforehand for medium people and light people.

  Moreover, in the said embodiment, the subunit | mobile_unit is equipped with the switch for amplification factor switching, and the structure which can determine more exactly generation | occurrence | production of fall of the care recipient A by changing the said switch according to the weight of the care recipient A However, the present invention is not limited to this. For example, a comparator reference voltage switching switch that can change the reference voltage of the comparator 104 of the slave unit is provided, and the comparator reference voltage switching switch is switched according to the weight of the care recipient A. Moreover, the structure which can determine more appropriately generation | occurrence | production of fall of the care recipient A may be sufficient.

  In the above embodiment, the slave unit is provided with a door open / close judgment criterion selection switch, and an optimum judgment result is obtained by performing a door open / close test according to the type of the door or after actually attaching to the door. However, the present invention is not limited to this. For example, the door opening / closing determination criterion is not provided, and one door opening / closing determination criterion is provided. It is also possible to construct a slave unit that is fixed to the door, or to prepare two types of slave units in advance, such as for a hinged door and for a sliding door.

  Moreover, in the said embodiment, the subunit | mobile_unit is equipped with the switch for amplification factor switching, and the structure which can determine more exactly generation | occurrence | production of fall of the care recipient A by changing the said switch according to the weight of the care recipient A However, the present invention is not limited to this. For example, the switch may be switched depending on whether the care recipient is male or female, not by the weight of the care recipient.

  Further, in the above-described embodiment, the slave unit includes a switch for determination target switching, and the slave unit has both a function of determining a person's falling sound and a function of determining a door opening / closing sound. However, the present invention is not limited to this. For example, in place of the determination target switching switch, a function for determining a person's falling sound and a function for determining a door opening / closing sound are provided. It may be configured to include a determination target setting switch capable of selectively setting only one of the functions to the slave unit having both of the functions and a setting enabling both of the functions to function. . In the case of this configuration, for example, referring to the example shown in FIG. 1, the determination target setting switch of the fourth slave unit 100d fixed to the door 1d of the entrance is set to work both functions, so that care is required. In addition to being able to detect when the person A goes out by opening the door 1d of the front door, when the person A falls down at the front door, the fall can be detected, and the care recipient A can be watched more closely. Further, in this case, when the fourth LED lamp 203d of the parent device 200 corresponding to the fourth slave device 100d detects the occurrence of a person's falling noise, the LED lamp is turned on to detect the occurrence of a door opening / closing sound. In such a case, the LED lamp may be blinked so that the watcher B can immediately discriminate the difference between the two depending on whether the LED lamp is lit or blinking, and the type of warning sound (for example, continuous sound and intermittent sound) It is good also as a structure which can discriminate | determine the difference of both immediately by making different.

  In the above embodiment, the microphone 101 has been described with respect to the configuration in which the air vibration is converted into an electric signal and output to the amplifier 102. However, the present invention is not limited to this. For example, the microphone itself converts the air vibration into an electric signal. Further, it may have a function of amplifying, filtering, and converting to a digital signal, and may output to the determination control unit 105.

  In the embodiment described above, the parent device 200 is configured to be carried by the watcher B, but is not limited thereto, and may be configured to be placed on a table or to be hung on a wall, for example.

  In the above embodiment, as a method of installing the slave unit, a method of placing it in the middle of the staircase 1a, a method of placing it on the floor of the room, and a method of fixing it to the movable side of the door 1d of the entrance have been described. In short, as long as it is a place where a person's falling noise or door opening / closing sound can be detected, it is only necessary to place it in an appropriate place, and there is no need to fix it. For example, the handset 100b for detecting the falling sound of a person in the dressing room 1b may be placed on the shelf of the bathroom vanity, or for detecting the opening / closing sound of the door 1d of the front door. You may place the subunit | mobile_unit 100d on the clog box (illustration omitted) arrange | positioned at the entrance.

  In the above embodiment, as an example of the predetermined operation of the present invention, an operation when a person falls and an operation when a person opens and closes a door are taken as examples. However, the present invention is not limited to this. For example, in the slave unit, the determination result is obtained by detecting the sound or vibration generated when the person falls from the stairs in the same manner as described above. Can also be transmitted to the parent machine, and the operation when a person falls off the stairs is an example of the predetermined operation of the present invention.

  According to the watching system of the present invention, for example, it is possible to detect and report the occurrence of a predetermined operation such as a person's overturning operation, and to exhibit the effect that installation work is unnecessary. For example, a general home or a nursing home It is useful as a monitoring system applied to nursing care facilities.

DESCRIPTION OF SYMBOLS 1 House 1a Stairs 1b Dressing room 1c Toilet 1d Door 10 Watch system 100a 1st handset 100b 2nd handset 100c 3rd handset 100d 4th handset 200 Parent machine A Caregiver B Watcher

Claims (7)

It is arranged in a place where the person to be watched moves, detects a sound generated from the place, and based on a predetermined determination criterion, determines whether a person has performed a predetermined operation based on the detection result, If it is determined that a predetermined operation has been performed, a determination device that transmits the determination result to the outside;
And a management device that outputs a predetermined alarm based on the determination result when the determination result is received from the determination device. The determination device is arranged in a plurality of different places,
Each of the determination devices arranged in the plurality of different locations has unique identification information for identifying each of the determination devices, and transmits the identification information to the outside together with the determination result.
When the management device receives the determination result and the identification information, the management device determines which of the plurality of determination devices is the determination result transmitted based on the received unique identification information. The monitoring system according to claim 1, wherein the predetermined alarm is output in an identifiable manner.   The monitoring system according to claim 1, wherein the management device is a portable device. The predetermined operation is an operation when the person falls,
The predetermined criterion is a criterion for determining whether the sound has a sound pressure level exceeding a predetermined threshold and has a frequency between 30 Hz and 70 Hz. The watching system as described in any one of 1-3. The predetermined operation is an operation when the person opens and closes the door,
The determination device determines whether or not the door has been opened and closed from the detection result, and transmits the determination result to the outside when it is determined that the door has been opened and closed. The watching system as described in any one of -3.   The monitoring system according to any one of claims 1 to 5, wherein a plurality of the predetermined determination criteria are provided and are selectable.   The monitoring system according to claim 1, wherein the determination device detects vibration of the place itself in addition to the sound.

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