JP2007011714A - Safety detector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safety detector capable of accurately determining abnormality with easy system construction by determining the presence of an inhabitant in a room and detecting motion while distinguishing a small animal from the inhabitant. <P>SOLUTION: A contact output device comprises a transmitter which processes signal output from a sensor 12 installed in the living room to detect the action of at least the inhabitant, and has a transmitting section 14 for transmitting a count value; a holder 8 mounted to an article carried with the inhabitant and including a transmitter transmitting radio wave in a predetermined cycle; and a receiver which receives signals from the transmitter and radio wave transmitted from the holder, and has an action determining section for determining the abnormality of the object person from the count value, a radio wave receiving determining section for determining the absence of the inhabitant from the presence/absence of signals from the transmitter and radio wave transmitted from the holder, and a contact output section for outputting a contact signal based on the determined result of two determining sections. A longitudinal face with a sensor face of a casing of the transmitter is provided with inclination for making a detection range of the sensor more than level. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a safety detection device that detects a resident in a home or a situation in the home with a sensor, detects an abnormality, and outputs an alarm.

Conventionally, when an elderly person in the home is in an emergency due to a seizure or a fall due to illness and needs help, the telephone number of a predetermined call center has been set in advance so that it can be difficult for the person to call for help. There has been proposed an emergency call system and its equipment that can be registered and communicated with the outside of the house with a simple operation. For example, a wristwatch or pendant that can be carried by an elderly person is equipped with a wireless transmission function, and when a button is pressed, a wireless signal is transmitted to an emergency call device connected to a public telephone line. Is automatically connected to a call center registered in advance as a trigger, and is called back from the call center. These emergency call devices are already in widespread use throughout the country and are installed in many elderly homes.
Furthermore, in recent years, a system has been proposed in which an action pattern of an elderly person or the like is monitored to detect and notify an abnormal situation at an early stage. In other words, the presence or absence of remote control operation of electrical appliances such as air conditioners and TVs that are considered to be used by elderly people on a daily basis is detected, and the usage status is ascertained using a safety confirmation terminal, and used once within 24 hours. If it is not done, what is transferred to the host computer via a telephone line is disclosed. (For example, Patent Document 1)

In addition, a system has been proposed in which a motion of a resident is detected by a human detection sensor including a pyroelectric sensor, and when a motion is not seen for a certain period of time, it is determined as abnormal and a notification is given. (For example, Patent Document 2)

In order to distinguish between humans and small animals, it has been proposed to set the sensitivity of the pyroelectric sensor in consideration of the calorific value of the small animals and to make the installation position higher than that of the small animals. (For example, Patent Document 3)
JP 2000-293774 A JP 2003-348264 A JP-A-11-86168

However, in such a system that detects a user's behavior pattern and movement with a sensor, when the user goes out, it is determined that the user has an abnormality and the sensor does not respond, and the call center There was a problem that a false alarm (false alarm) was reported. As a means to solve this, electric locks are provided at the entrances and entrances of the entrance, etc., and a system that links with the emergency call device and a sensor that detects human beings are provided to judge whether to go out, or a switch such as an outing switch is used for the user. Something to be operated has been proposed, but it is necessary to install a new sensor. Furthermore, since the notification device is usually installed near the place where the telephone is placed because it uses a public telephone line, There has been a problem that it is costly to connect with nearby sensors. In addition, there is a problem that it is not possible to make an accurate judgment when a user goes out from a different entrance such as a self-explanatory door, not only the entrance.

Furthermore, infrared sensors called pyroelectric sensors that detect changes in the temperature difference between the body temperature and the surroundings, and radio wave sensors that use radio wave Doppler effects are mainly used as sensors that detect people. However, it was difficult to distinguish between humans and pets such as dogs and cats. For example, even when the resident is fainted and falls down, there is a risk that the resident will make a false determination that there is no abnormality because the small animal is moving. The sensitivity setting used for distinguishing from small animals is very difficult considering the amount of heat generated by animals and sensor variations. On the other hand, even if it is installed at a high position, the detection range of the sensor is about 4 to 5 m. Therefore, unless the detection angle of the sensor is set to a very acute angle, it is difficult to detect only residents except small animals. There was a problem that the resident's movement could not be sufficiently detected by the amount of the change.

The present invention has been made in the background of such circumstances, and its purpose is to sense the characteristics of movements output from the daily lives of residents in the home by eliminating disturbances of small animals such as pets as much as possible. In addition, the present invention provides a system for judging an abnormality by judging the presence or absence of a user.

A sensor installed in a home that detects at least a resident's behavior within a predetermined detection range, a sensor signal processing unit that processes a signal output from the sensor, and a transmission that transmits a count value from the sensor signal processing unit A transmitter having a portion,
A holder with a built-in transmitter that is mounted on an article carried by the resident and emits radio waves at a predetermined cycle;
A receiver for receiving the signal from the transmitter and the radio wave emitted by the holder, a behavior determination unit for judging the abnormality of the subject from the count value of the sensor signal processing unit, the signal from the transmitter and the radio wave emitted by the holder Safety receiver comprising: a radio wave reception determination unit that determines the absence of a resident from the presence or absence of an alarm; and an abnormality determination unit that determines a resident's abnormality based on the determination results of the behavior determination unit and the radio wave reception determination unit A detection device,
At least a long surface having a sensor surface of the transmitter casing is provided with an inclination for making the detection range of the sensor equal to or higher than horizontal.

The sensor may be a pyroelectric sensor.

The receiver may include a contact output unit that outputs a contact signal based on a determination result of the abnormality determination unit.

A sensor installed in a home that detects at least a resident's behavior within a predetermined detection range, a sensor signal processing unit that processes a signal output from the sensor, and a transmission that transmits a count value from the sensor signal processing unit A transmitter having a portion,
A holder with a built-in transmitter that is mounted on an article carried by the resident and emits radio waves at a predetermined cycle;
A receiver for receiving the signal from the transmitter and the radio wave emitted by the holder, a behavior determination unit for judging the abnormality of the subject from the count value of the sensor signal processing unit, the signal from the transmitter and the radio wave emitted by the holder Safety receiver comprising: a radio wave reception determination unit that determines the absence of a resident from the presence or absence of an alarm; and an abnormality determination unit that determines a resident's abnormality based on the determination results of the behavior determination unit and the radio wave reception determination unit A method of installing a detection device,
Installed based on the height of the resident and the detection state of the small animal when installing the transmitter equipped with an LED that is connected to the sensor signal processing unit and is lit when the resident's behavior is detected by the sensor The place was decided.

A sensor that is installed in a home and detects at least a resident's behavior within a predetermined detection range; a sensor signal processing unit that processes a signal output from the sensor; and a transmission unit that transmits a count value from the sensor signal processing unit; A transmitter having a transmitter, a holder that is mounted on an article carried by a resident and emits radio waves at a predetermined cycle, a receiver that receives signals from the transmitter and radio waves emitted by the holder, and sensor signal processing A behavior determination unit that determines the abnormality of the subject from the count value of the unit, a radio wave reception determination unit that determines the absence of a resident from the signal of the transmitter and the presence or absence of radio waves emitted by the holder, a behavior determination unit and radio wave reception A safety detection device comprising a receiver having an abnormality determination unit that determines an abnormality of a resident based on a determination result of the determination unit, at least in front of a longitudinal surface on which a sensor surface of a transmitter housing is located By providing an inclination to make the detection range of the sensor more than horizontal, it can be realized easily and cheaply compared to conventional go-out judgment, and pets without the need for special jigs and advanced sensor sensitivity settings It is possible to easily avoid erroneous detection of a sensor such as a small animal, and it is possible to easily confirm at the time of installation whether there is any erroneous detection. As a result, accurate data can be transmitted to the call center. Moreover, since the contact input of the emergency call device conventionally used by the resident can be used as it is, it is not necessary to provide a new notification means, and inexpensive safety detection is possible. In addition, since the battery is mounted using a wide inclined portion of the transmitter housing, the entire transmitter can be reduced in size by the inclination.

Embodiments to which the present invention can be applied will be described below with reference to the drawings. FIG. 1 shows the configuration of a contact output device for implementing the present invention and the connection with peripheral devices. A transmitter 1, a receiver 2, and an emergency call device 3 are installed in a home such as an elderly person. The transmitter 1 is equipped with a sensor that can detect the movement of the human body without contact, such as an infrared sensor or an ultrasonic sensor, and is fixed to a wall or a pillar. The receiver 2 is installed in a range where a radio signal from the transmitter 1 can be received. Note that the transmitter 1 and the receiver 1 are considered to be separated from each other because they may be installed at different locations, but may be wired. The receiver 2 and the emergency call device 3 are connected by a cable 4 that transmits contact points. For this reason, it is desirable to install in the vicinity of the emergency call device 3. The emergency call device 3 can use a wireless pendant or the like that has been conventionally installed in a house, and is connected to a telephone public line 5 and a general telephone 6. In addition, the emergency call device 3 is provided with a plurality of contact input terminals capable of inputting contact points by wire, such as a normal fire alarm. In addition, a transmitter key holder 8 is attached to the entrance key 7 that is normally used by residents. The holder 8 does not need to be worn on the key 7 if the resident always carries it when going out such as a bag.

FIG. 2 is a diagram illustrating an internal configuration of the transmitter 1. The transmitter 1 includes a battery 10, a power supply unit 11, a sensor 12, a sensor signal processing unit 13, a transmission unit 14, and a timer 15. Since the transmitter 1 is not necessarily installed near the power outlet, driving by the battery 10 is desirable. When the transmitter 1 is connected to the battery, the transmitter 1 supplies the operation power stabilized by the power supply unit 11 and the measurement of the signal of the sensor 12 is started. The sensor 12 is a sensor that can detect that a person has moved, and an infrared sensor, a pyroelectric sensor, an ultrasonic sensor, and the like are conceivable. A pyroelectric sensor that detects the movement of the difference is suitable. The pyroelectric sensor can adjust a predetermined detection range with a lens, and has a detection range of 20 degrees to 90 degrees as a normal angle.

FIG. 3 is a view for explaining the detection range of the pyroelectric sensor and the structure inside the casing of the transmitter 1 according to the present invention. In the casing of the transmitter 1, the surface of the longitudinal sensor 12 is inclined obliquely. The inclination angle θ2 is close to the angle θ1 so that the detection range of the sensor 12 is horizontal, where the detection range of the sensor 12 is the angle θ1. Since the sensor 12 transmits power and signals with a plurality of pins, it is desirable that the circuit board to which the pins are connected be parallel to the sensor surface in consideration of maintenance of strength and ease of assembly. As the method, only the sensor 12 as shown in (a) or a circuit board 16 of a simple sensor signal processing unit 13 that processes the signal of the sensor 12 is fixed, and a circuit other than the battery 10 as shown in (b). There is a method of fixing the substrate 18 on which all are mounted. The sensor signal processing unit 13 converts the analog signal of the pyroelectric element into a binary digital signal by a comparator element or the like, and when the movement of the human body is detected, sets the digital signal to “H”, and the “H”. Judging from the time and number of times that the person is moving, the counter inside is counted up. Therefore, in the case of (a), since there is a concern about malfunction due to noise when the analog signal of the pyroelectric element is connected by the electric signal line, it is desirable to mount a circuit up to the point where it is converted into a digital signal. At present, there is a module in which the pyroelectric element and the digital signal conversion part are combined into one module. In this case, the method (b) can be recommended. In order to reduce the manufacturing cost, it is preferable to use one circuit board 18 as shown in (b) rather than dividing into two circuit boards 16 and 17 as shown in (a). On the other hand, the surface to be installed on the wall or pillar is made vertical so that it can be installed easily. For the wall installation, a predetermined hole is opened in the housing and it can be fixed by hooking it on a nail or wood screw. In addition, since a space is created on the lower surface of the casing by providing the inclination, mounting the battery 10 there, the casing that previously required a width corresponding to the battery 10 as a whole has a narrow upper part. Thus, it is possible to reduce the size.

Here, the installation method of the transmitter 1 is demonstrated using FIG. The transmitter 1 is fixed to a wall or a pillar. At this time, the height H to be installed is determined according to the height of the resident and the size of the small animal. For example, if it is a resident who is 160 cm tall, it is only necessary to be able to detect the movement when standing and acting, so H is installed at a position of about 120 cm. Thereby, the daily movement of the resident can be detected, while the movement of small animals such as dogs and cats can be avoided. Also, it is recommended to adjust the height so that pet movement is not actually detected during installation work. At this time, if the LED is mounted on the surface of the transmitter 1 and connected to the sensor signal processing unit 13 so as to light up when the sensor 12 detects movement, the installer can adjust the height so that it does not react to pets. It becomes easy to judge visually.

For example, it may be lit when the digital signal of the sensor signal processing unit 13 is “H”. Conventional sensors that monitor the resident's behavior installed on the ceiling and walls and set the entire room as the detection range, so the movement of small animals was also detected. By moving, there was a possibility that the resident might make a false judgment that there was no abnormality. In the present invention, the erroneous determination as described above can be avoided by not including the moving range of the small animal in the detection range. Conventionally, there is a method in which a jig is sandwiched between the lower part of the transmitter 1 and the sensor surface is intentionally tilted upward. However, the installation is unstable and a dedicated jig is required. In the present invention, since the above-mentioned problem is taken into consideration from the time of manufacture, stable installation on a wall or a pillar is easily possible, and a dedicated jig is not required. In addition, when the resident is not keeping a pet or the like, the height H may be set to several tens of centimeters. In that case, it is possible to sufficiently detect movement while sitting.

The sensor signal processing unit 13 is connected to the sensor 12 and processes a signal output from the sensor. The processing method will be described with reference to FIG. The time interval between D1 and D2 is, for example, 24 hours. If the resident is carrying out daily life such as eating, bathing, and housework after getting up and going to bed like D1, the sensor 12 detects the resident's movement and counts up. Here, when the resident is out of the office as in the period of ΔT1, the sensor signal cannot be detected, so the count up of the counter in the sensor signal processing unit 13 is stopped. Thereafter, when the resident returns home and a motion is detected, the count-up is resumed, and the count-up is stopped when the predetermined threshold value SH is reached. The transmitter 1 measures the time with the timer 15, and when the predetermined time T01 is reached, the transmitter 1 transmits the counted value to clear the counter value. The predetermined time T01 is a predetermined time. T01 is preferably in the morning when the resident is considered to wake up in order to make a confirmation call to the resident when, for example, the call center as a contact is found to be abnormal.

On the other hand, like D2, there is a case where the resident's movement disappears at time T2 and does not reach the threshold value. This may be the case when the resident has been absent for a long time or has fallen and cannot move. At this time, the sensor 12 continues sensing for detecting the movement of the person, and the transmitter 1 transmits the count value at that time when the predetermined time T02 is reached.

The receiver 2 receives the count value from the transmitter 1. The internal configuration of the receiver 2 is shown in FIG. The data transmitted from the transmitter 1 is received by the receiving unit 22, and the count value is extracted and transmitted to the behavior determining unit 23. The behavior judging unit 23 judges the resident's abnormality by comparing the count values with a preset threshold SH.

For example, in FIG. 3, the count value transmitted from the transmitter 1 at time T01 is abnormal in the action determination unit 23 because the sensor 12 detects the movement of the human body from time T01 and the count value is equal to or greater than the threshold value SH. Judge that there is no. On the other hand, since the count value transmitted at time T02 is significantly lower than the threshold value SH, the behavior determination unit 23 determines that there is no user movement.

However, in a conventional system that detects a resident's behavior pattern and movement with a sensor, it is not easy to determine whether the resident has gone out between time T2 and T02 or whether the resident has fallen and cannot move. Conventionally, sensors that use high-sensitivity sensors to infer from the amount of human movement, and those that use multiple sensors to determine whether or not the resident's movement has exited the entrance have been proposed. It is difficult to judge quantitatively because resident behavior is individual. Due to these circumstances, when it was determined that there was no movement despite being out, it was sometimes mistakenly recognized and reported to the call center.

Furthermore, if a new sensor is installed, dedicated software using sensor wiring and complicated algorithms is required, which greatly increases costs, and it is not possible to make more accurate abnormality determination at low cost. It was. Therefore, in the present invention, a holder for transmitting a radio wave is provided so that it can be determined cheaply and reliably, and a small animal and a person can be distinguished by a sensor installation method.

FIG. 7 is a view showing the internal configuration of the holder 8. The holder 8 is operated by a power supply unit 81 using a small battery such as a coin type. When the timer 82 reaches a preset time period, the transmitter 83 transmits radio waves. The time period to be set is preferably associated with the transmission time of the transmitter 1. That is, in order to find a resident's abnormality at an early stage, the transmission interval of the transmitter 1 is set as short as possible and the time interval of radio wave transmission of the holder is set shorter. On the other hand, in order to extend the battery life of the transmitter 1 and the holder 8 as much as possible, the transmission time interval between the transmitter 1 and the holder 8 is set to 24 hours, etc., and the timer 15 and the timer 82 are set so as to shift the transmission times. It is possible to set. In this case, by delaying the transmission time of the holder 8 from the transmitter 1, it is possible to determine whether or not there is an abnormality when the resident is in the room. By mounting a transmission function for transmitting radio waves of the same frequency as the transmitter 1 in the holder 8, the receiver 2 can share the same reception circuit. Further, the radio wave transmission output of the holder 8 is preferably strong enough to be received by the receiver 2 throughout the home.

The holder 8 is preferably small so that the occupant can easily carry it. Therefore, it is preferable that the battery used for the power supply unit 81 be small. The holder 8 can be fitted with a key of the entrance used by the resident, or can be put in a bag used by the resident when going out. That is, the holder 8 needs to be in a state where the occupant is taken out together with the goods to be carried when the resident goes out.

The radio wave transmitted from the holder 8 is received by the receiving unit 22 of the receiver 2. The reception unit 22 selects transmission to the behavior determination unit 23 or the radio wave reception determination unit 30 based on the received radio wave transmission frame. As a method for selecting a transmission frame, it is conceivable that each frame is provided with a command capable of distinguishing whether the transmitter 1 or the holder 8 is used. In addition, it is preferable that a unique ID number is provided for each transmitter 1 so that it can correspond to a plurality of transmitters 1. The receiving unit 22 extracts the transmission frame to the end, confirms whether or not the transmission frame is normally received by an error correction code (CRC), and transmits the reception information.

Here, the determination of whether or not the resident is abnormal by the behavior determination unit 23 and the radio wave reception determination unit 30 is performed as shown in FIG. When the radio wave reception determining unit 30 does not receive a radio wave, the resident is determined to be out regardless of the determination result of the behavior determining unit 23. This means that if the resident is away from home for a long time, such as hospitalization or long-term outing, the resident himself holds the key to the home and the bag for going out, and the holder is not in the home. This is because the call center can be assumed to be difficult. This is to prevent the resident from moving, i.e., judging that there is no abnormality because the sensor signal disappears when the user is absent. Of course, since there is a possibility that the battery 80 is exhausted and cannot emit radio waves, it is desirable to transmit the data indicating that the battery is exhausted in advance to the receiver 2 before exhausting. Thus, conventionally, when there is a false alarm, a measure such as destroying and confirming a locked entrance is taken, but in the present invention, when going out for a long period of time, it is usually locked with a key with a holder 8 and locked. Such misinformation can be reduced by using the general practice of carrying a bag or carrying a bag with a holder 8.

On the other hand, when the radio wave reception determination unit 30 confirms reception of radio waves, if the count value transmitted from the transmitter 1 in the behavior determination unit 23 is less than the threshold value SH, it is abnormal such as a resident falling down. Judge that there is. The action determination unit 23 informs that, and the contact output unit 25 outputs the contact, which is input to the existing emergency call device 3. When the contact point is input, the emergency call device 3 automatically dials a preset telephone number of the call center and notifies the call center of the user's abnormality. In the call center, it is possible to determine whether or not the person is at home and cannot move according to the state of the call with the resident. In addition, depending on the situation, call an ambulance, contact the family, go to see the situation. And so on. Even if the sensor 12 is reported as a false alarm due to a malfunction of the sensor 12, the resident is in the room due to the signal from the holder 8, so the call center can be called for, so repairs can be made to a specialist. This makes it possible to respond to device abnormalities. Even if the action determination unit 23 determines that the data is less than the threshold value SH, if the radio wave reception determination unit 30 does not confirm reception of radio waves, the contact output is not output because it has been out for a long time.

The actual determination method and notification timing will be described with reference to FIG. (A) of FIG. 9 is a figure which shows transition of the count value of a sensor, and the measurement interval Ta shall be 24 hours, for example. The sensor count value of the transmitter 1 is reset at TS0, and then the count value increases due to the movement of the user. When the threshold value SH is reached, the count is stopped and the value is maintained. The result is transmitted from the transmitter 1 to the receiver 2 at time TS 1 and transmitted to the behavior determination unit 23. Thereafter, a radio wave is transmitted from the holder 8 at time TH1 and transmitted to the radio wave reception determination unit 30. At this time, since it corresponds to (3) in FIG. 8, the receiver 2 is determined to be normal. On the other hand, when the resident falls down and cannot detect the movement at time TS2, the transmitter 1 transmits the value counted so far at time TS3. When the receiver 8 receives the radio wave from the holder 8 at time TH3, the receiver 2 determines that it corresponds to (1) in FIG. 8 and outputs a contact, and a call center is notified via the emergency call device 3. Here, if the radio wave from the holder 8 is not received at time TS3, it is determined that the user has gone out as shown in FIG.

In this way, the receiver 2 collects the data of the transmitter 1 first and makes a determination at the time when the radio wave of the holder 8 is received, so that whether or not the user is abnormal when the user is in the room. This makes it possible to avoid false alarms when going out as in the past, and to notify the call center only when the user is in the room. It becomes possible. Note that a commanded radio wave may be output from the receiver 2 to transmit data to the transmitter 1 and the holder 8. In this case, the receiver 2 needs a transmission function, and the transmitter 1 and the holder 8 need a reception function, so the life of each battery is shortened. It is also possible to shorten the time for judging the resident's abnormality by shortening the transmission interval between the transmitter 1 and the holder 8 to several hours or several tens of minutes.

It is a schematic block diagram of the safety detection apparatus concerning embodiment of this invention. It is an internal block diagram of the transmitter concerning embodiment of this invention. 1 illustrates the inside of a casing of a transmitter according to an embodiment of the present invention. 1 illustrates a transmitter installation method according to an embodiment of the present invention. FIG. 3 shows signal processing of a sensor according to an embodiment of the present invention. FIG. It is an internal block diagram of the receiver concerning embodiment of this invention. It is an internal block diagram of the holder concerning embodiment of this invention. It is the figure which showed the resident's abnormality judgment process concerning embodiment of this invention It is the figure which showed the transmission timing of the transmitter concerning the embodiment of this invention, and a holder.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Transmitter 2 Receiver 3 Emergency call apparatus 4 Cable 5 Public telephone line 6 Telephone 7 Key 8 Holder 10 Battery 11 Power supply part 12 Sensor 13 Sensor signal processing part 14 Transmission part 15 Timer 16, 17, 18 Circuit board 21 Power supply part 22 Reception unit 23 Action determination unit 24 Radio wave reception determination unit 25 Contact output unit 80 Battery 81 Power supply unit 82 Timer 83 Transmission unit

Claims (4)

A sensor installed in a home that detects at least a resident's behavior within a predetermined detection range, a sensor signal processing unit that processes a signal output from the sensor, and a transmission that transmits a count value from the sensor signal processing unit A transmitter having a portion,
A holder with a built-in transmitter that is mounted on an article carried by the resident and emits radio waves at a predetermined cycle;
A receiver for receiving the signal from the transmitter and the radio wave emitted by the holder, a behavior determination unit for judging the abnormality of the subject from the count value of the sensor signal processing unit, the signal from the transmitter and the radio wave emitted by the holder Safety receiver comprising: a radio wave reception determination unit that determines the absence of a resident from the presence or absence of an alarm; and an abnormality determination unit that determines a resident's abnormality based on the determination results of the behavior determination unit and the radio wave reception determination unit A detection device,
A safety detecting device, wherein at least a longitudinal surface having a sensor surface of a casing of the transmitter is provided with an inclination for making a detection range of the sensor more than horizontal. The safety detection device according to claim 1, wherein the sensor is a pyroelectric sensor. The safety detection device according to claim 1, wherein the receiver includes a contact output unit that outputs a contact signal based on a determination result of the abnormality determination unit. A sensor installed in a home that detects at least a resident's behavior within a predetermined detection range, a sensor signal processing unit that processes a signal output from the sensor, and a transmission that transmits a count value from the sensor signal processing unit A transmitter having a portion,
A holder with a built-in transmitter that is mounted on an article carried by the resident and emits radio waves at a predetermined cycle;
A receiver for receiving the signal from the transmitter and the radio wave emitted by the holder, a behavior determination unit for judging the abnormality of the subject from the count value of the sensor signal processing unit, the signal from the transmitter and the radio wave emitted by the holder Safety receiver comprising: a radio wave reception determination unit that determines the absence of a resident from the presence or absence of an alarm; and an abnormality determination unit that determines a resident's abnormality based on the determination results of the behavior determination unit and the radio wave reception determination unit A method of installing a detection device,
Installed based on the height of the resident and the detection state of the small animal when installing the transmitter equipped with an LED that is connected to the sensor signal processing unit and is lit when the resident's behavior is detected by the sensor A method of installing a safety detection device characterized by determining a location.