JP2003256952A - Poriomaniac monitoring device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To notify a fact that an oscillator is released by a poriomaniac by a receiver to be installed on the watcher's side when the oscillator is released by the poriomaniac and to save power by interrupting supply of operating power to a high frequency transmitting circuit of the oscillator. <P>SOLUTION: When the oscillator 51 is released by the poriomaniac, non- portable high frequency radio waves in which a non-portable signal from a signal generation circuit 61 by control of a control circuit 62 that detects a sensor signal from a human body sensor 60 of a oscillator becomes a modulation signal are transmitted (intermittently transmitted) from a high frequency transmitting circuit 63, the fact that the oscillator is released is notified by the receiver 52 by which the non-portable high frequency radio waves are received. In addition, the control circuit that detects the sensor signal from the human body sensor of the oscillator interrupts the supply of operating power to the high frequency transmitting circuit by controlling a power supply circuit 64 after outputting the non-portable signal from the signal generation circuit (for the prescribed number of times). <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wandering person monitoring device, and more particularly, to transmitting a high frequency radio wave from a transmitter carried by the wandering person and receiving the high frequency radio wave to determine whether or not the wandering person is within a predetermined area. The present invention relates to a wandering person monitoring device capable of monitoring whether or not a person is wandering.

[0002]

2. Description of the Related Art Conventionally, whether or not a wandering person is in a predetermined area in a house (dwelling unit), a nursing facility, etc., that is, it is monitored whether it is in the predetermined area or not.
As a wandering person monitoring device for informing the observer side of the absence of a wandering person, a wandering person monitoring device having a configuration shown in the block diagram of FIG. 3 has been proposed.

In the wandering person monitoring apparatus shown in the same figure, a radio wave carried by a wandering person and having no interference with electromagnetic waves such as external noise (hereinafter referred to as high frequency radio wave) is transmitted.
The transmitter 101 for intermittent transmission includes a signal generation circuit 110,
A high frequency transmission circuit 111 and a power supply circuit (hereinafter referred to as a transmitter power supply circuit) 112 are provided.

Further, the receiver 102 installed on the supervisor side.
The high frequency receiving circuit 120, the control circuit 121, the notification unit 122, and the power supply circuit (hereinafter referred to as the receiver power supply circuit) 1
23 are provided.

In the conventional wandering person monitoring apparatus thus constructed, the signal generator circuit 110 and the high frequency generator circuit 111 of the transmitter 101 shown in the block diagram of FIG. 3 are supplied with power from the transmitter power supply circuit 112. Is always supplied as operating power. Further, the high-frequency receiving circuit 120 and the control circuit 121 of the receiver 102 are also constantly supplied with power from the receiver power supply circuit 123 as operating power.

In the block diagram of FIG. 3, the transmitter 101
The signal generation circuit 110 is composed of, for example, a digital signal to which a code is added as a modulation signal for making the radio wave intermittently transmitted from the high frequency generation circuit 111 into a high frequency radio wave without interference with electromagnetic waves such as external noise. Generates low frequency signals. In addition, the high frequency transmission circuit 111 of the transmitter 101
Transmits intermittently the high frequency electric wave which modulated the low frequency signal from the signal generation circuit 110 as a modulation signal (frequency modulation).

Here, when the wandering person is present in the predetermined area, the high frequency radio wave intermittently transmitted from the high frequency transmitting circuit 111 of the transmitter 101 shown in the block diagram of FIG. The high frequency receiving circuit 120 is normally received by the receiving circuit 120.
The reception confirmation signal is output to. Further, in the receiver 102, the control circuit 121, which has detected the reception confirmation signal from the high frequency receiving circuit 120, determines that the wandering person is present in the predetermined area, and maintains the monitoring state of the wandering person monitoring device. To control.

On the other hand, when the wandering person is not present in the predetermined area, the high frequency radio wave intermittently transmitted from the high frequency transmitting circuit 111 of the transmitter 101 shown in the block diagram of FIG. The reception confirmation signal is not output from the high frequency reception circuit 120 to the control circuit 121 because the high frequency reception circuit 120 cannot receive the signal or cannot normally receive the signal. Further, in the receiver 102, the control circuit 1 which cannot detect the reception confirmation signal from the high frequency receiving circuit 120 for a predetermined time or longer.
21 judges that the wandering person is absent in the predetermined area,
A control signal for notifying that effect is output by the notification unit 122. The notification unit 122 of the receiver 102 that has detected this control signal notifies the observer that the wandering person is not within the predetermined area through means such as sounding a voice, displaying an image, and lighting a light. .

[0009]

However, in the wandering person monitoring apparatus of the conventional example, when the wandering person releases the transmitter 101 and does not exist in the predetermined area, the transmitter 10
Since 1 is in the predetermined area, the control circuit 121 of the receiver 102 erroneously determines that the wandering person is in the predetermined area, and notifies the surveillance person that the wandering person is not in the predetermined area. There was a difficulty that I could not do.

In addition, in the conventional wandering person monitoring device,
When the wandering person releases the transmitter 101 and is absent in the predetermined area, it is unnecessary to supply operating power from the transmitter power supply circuit 112 of the transmitter 101 to the high-frequency transmitter circuit 111, resulting in unnecessary power consumption. There was a difficulty.

The present invention has been made to solve the above-mentioned difficulties, and when the wandering person releases the transmitter, the fact is notified by the receiver installed on the observer side. An object of the present invention is to provide a wandering person monitoring device that can save power by cutting off the supply of operating power to the high-frequency transmitting circuit of the transmitter.

[0012]

In order to achieve the above-mentioned object, the wandering person monitoring apparatus according to the present invention comprises a transmitter carried by the wandering person and transmitting high frequency radio waves, and a wandering person receiving the high frequency radio waves in a predetermined area. It consists of a receiver that determines whether or not you are inside, and the transmitter has a human body detection sensor that outputs a sensor signal when it detects that the wandering person has let go of the transmitter. The signal generation circuit for outputting the non-portable signal generated by the sensor and the area monitoring signal indicating that the wandering person is in the predetermined area, and the non-portable signal is output when the sensor signal is output. Is not output, a high-frequency radio wave is emitted by a control circuit for controlling the signal generation circuit so as to output the area monitoring signal and one of the area monitoring signal and the non-portable signal from the signal generation circuit. It is characterized in by further comprising a high frequency oscillator circuit to transmit.

According to such a wandering person monitoring apparatus, when the wandering person monitoring apparatus is in the wandering person monitoring state, when the wandering person carries the transmitter, the signal generating circuit controlled by the control circuit of the transmitter. A high frequency radio wave for area monitoring in which the area monitoring signal from is a modulation signal is transmitted (intermittent transmission) from the high frequency transmitting circuit. In the receiver installed on the side of the observer, whether the wandering person carrying the transmitter is within the predetermined area based on the difference in whether the high frequency radio wave for area monitoring can be received by the high frequency receiving circuit. Whether or not, that is, the control circuit determines whether or not the vehicle exists in the predetermined area or is absent, and when it is absent, the absence notification is performed by the notification unit.

When the transmitter is released by a wandering person, the non-portable signal from the signal generating circuit under the control of the control circuit which detects the sensor signal from the human body detection sensor of the transmitter becomes a modulation signal. High frequency radio waves are transmitted from the high frequency transmission circuit (intermittent transmission). In the receiver installed on the observer side, the control circuit determines that the transmitter has been released by the wandering person by receiving the high-frequency radio wave for non-portable use by the high-frequency receiving circuit, and the non-portable body to that effect. The notification is performed by the notification unit.

Further, the wandering person monitoring apparatus according to the present invention includes a transmitter that is carried by the wandering person and transmits high frequency radio waves, and a receiver that receives the high frequency radio waves and determines whether or not the wandering person is within a predetermined area. The transmitter includes a human body detection sensor for detecting that the wanderer has let go of the transmitter and outputting a sensor signal, a non-portable signal generated according to the sensor signal, and the wanderer. A signal generating circuit for outputting an area monitoring signal indicating that the user is in an area, and a high frequency transmission for generating and transmitting a high frequency radio wave by any one of the area monitoring signal and the non-portable signal from the signal generating circuit. Circuit, a power supply circuit for supplying power to the high-frequency transmission circuit, and a non-portable signal when the sensor signal is output, and an area monitoring signal when the sensor signal is not output. The control circuit for controlling the signal generation circuit as described above, and for outputting the power cutoff signal to the power supply circuit after the non-portable signal is output from the signal generation circuit to cut off the power supply to the high frequency transmission circuit. It is characterized by having.

According to such a wandering person monitoring device, when the wandering person monitoring device is in the wandering monitoring state, if the wandering person carries the transmitter, the signal generating circuit controlled by the control circuit of the transmitter. A high frequency radio wave for area monitoring in which the area monitoring signal from is a modulation signal is transmitted (intermittent transmission) from the high frequency transmitting circuit. In the receiver installed on the side of the observer, whether the wandering person carrying the transmitter is within the predetermined area based on the difference in whether the high frequency radio wave for area monitoring can be received by the high frequency receiving circuit. Whether or not, that is, the control circuit determines whether or not the vehicle exists in the predetermined area or is absent, and when it is absent, the absence notification is performed by the notification unit.

When the transmitter is released by the wandering person, the non-portable signal from the signal generating circuit under the control of the control circuit which detects the sensor signal from the human body detection sensor of the transmitter becomes a modulation signal. High frequency radio waves are transmitted from the high frequency transmission circuit (intermittent transmission). In the receiver installed on the observer side, the control circuit determines that the transmitter has been released by the wandering person by receiving the high-frequency radio wave for non-portable use by the high-frequency receiving circuit, and the non-portable body to that effect. The notification is performed by the notification unit.

Further, the control circuit which has detected the sensor signal from the human body detection sensor of the transmitter outputs the non-portable signal from the signal generating circuit a predetermined number of times and then controls the power supply circuit to send the signal to the high frequency transmitting circuit. By cutting off the supply of the operating power supply, the transmission (intermittent transmission) of the non-portable high frequency radio wave from the high frequency transmission circuit is stopped after the output of the non-portable signal from the signal generation circuit is completed.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the wandering person monitoring apparatus according to the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a specific configuration of the wandering person monitoring apparatus according to the first embodiment of the present invention. A radio wave carried by a wandering person and free from interference with electromagnetic waves such as external noise ( (Hereinafter, referred to as high-frequency radio wave). Here, the transmitter 1 that intermittently transmits, and the high-frequency radio wave that is installed on the observer side and that is intermittently transmitted from the transmitter 1 are received, and the wandering person is a house (dwelling unit). And a receiver 2 that determines whether or not the user is in a predetermined area in a nursing home or the like, that is, whether the user is in the predetermined area or not.

The transmitter 1 shown in FIG. 1 has a human body detection sensor 10 for outputting a sensor signal by detecting that a wandering person has let go of the transmitter, and a sensor signal from the human body detection sensor 10. From the human body detection sensor 10 and the signal generation circuit 11 for outputting the non-portable signal generated by the above and the area monitoring signal indicating that the wandering person is in the predetermined area, that is, the presence of the wandering person in the predetermined area. The signal generating circuit 11 outputs the non-portable signal when the sensor signal is output, and outputs the area monitoring signal distinguished from the non-portable signal when the sensor signal is not output.
A control circuit (hereinafter, referred to as a transmitter control circuit) 12 for controlling the control signal, and any one signal of the area monitoring signal and the non-portable signal from the signal generating circuit 11 becomes a modulation signal, so that interference such as external noise may occur. A high-frequency transmission circuit 13 for generating and intermittently transmitting high-frequency radio waves (high-frequency radio waves for monitoring and high-frequency radio waves for non-portion to be described later) having different phases, amplitudes, and the like, a human body detection sensor 10, a signal generation circuit 11, and a transmitter. A power supply circuit (hereinafter referred to as a transmitter power supply circuit) 14 for supplying operating power to the control circuit 12 and the high frequency transmission circuit 13 is provided.

The receiver 2 shown in FIG.
The high-frequency receiving circuit 20 for receiving the monitoring high-frequency radio wave and the non-portable high-frequency radio wave, which are intermittently transmitted from the high-frequency transmitting circuit 13, and the high-frequency radio wave (the monitoring high-frequency radio wave, the non-portable high-frequency radio wave) are received. Further, a control circuit (hereinafter, referred to as a receiver control circuit) 21 for detecting a signal from the high frequency receiving circuit 20 (hereinafter, referred to as a reception confirmation signal during monitoring and a reception confirmation signal during non-carrying), and a reception during monitoring Based on the control of the receiver control circuit 21 that the confirmation signal cannot be detected for a certain time or longer, notifying that the wandering person is not in the predetermined area, and controlling the receiver control circuit 21 that has detected the reception confirmation signal during non-carrying Based on the notification, the notification unit 22 for notifying that the transmitter 1 has been released by the wandering person.
And a power supply circuit (hereinafter, referred to as a receiver power supply circuit) 23 for supplying operating power to the high frequency reception circuit 20 and the receiver control circuit 21, respectively.

A specific operation of the wandering person monitoring apparatus according to the first embodiment of the present invention thus constructed will be described below.

The wandering person carrying the transmitter 1 shown in the block diagram of FIG. 1 monitors whether or not the wandering person is present or absent in a predetermined area such as a house (housing unit) or a nursing home. At the time of person monitoring, the human body detection sensor 10 of the transmitter 1,
The signal generator circuit 11, the transmitter control circuit 12, and the high frequency generator circuit 13 are constantly supplied with power from the transmitter power supply circuit 14 as operating power supplies. Also, regarding the high frequency receiving circuit 20 and the receiver control circuit 21 of the receiver 2,
The power from the receiver power supply circuit 23 is constantly supplied as the operating power.

First, during the above-mentioned wandering person monitoring, the transmitter control circuit 12 of the transmitter 1 shown in the block diagram of FIG. 1 carried by the wandering person generates an area monitoring signal described later from the signal generating circuit 11. An area monitoring control signal for outputting is output. The signal generation circuit 11 of the transmitter 1 that detects the area monitoring control signal modulates the radio wave intermittently transmitted from the high frequency transmission circuit 13 into a high frequency radio wave for monitoring without interference with electromagnetic waves such as external noise. As an example, an area monitoring signal, which is composed of a digital signal added with a code, for determining whether or not a wandering person is in a predetermined area is output. In addition, the high frequency transmission circuit 13 of the transmitter 1
Transmits intermittently high-frequency radio waves for monitoring, which are modulated (frequency-modulated) by using the area monitoring signal from the signal generation circuit 11 as a modulation signal.

Here, the transmitter 1 shown in the block diagram of FIG.
When a wandering person carrying a mobile phone is present in a predetermined area, the high frequency radio wave for monitoring, which is intermittently transmitted from the high frequency transmission circuit 13 of the transmitter 1, is received by the high frequency reception circuit 20 of the receiver 2. This high-frequency receiving circuit 20 is normally received.
Outputs a reception confirmation signal during monitoring to the receiver control circuit 21. Further, in the receiver 2, the receiver control circuit 21 which has detected the reception confirmation signal during monitoring from the high frequency reception circuit 20.
Determines that the wandering person carrying the transmitter 1 is present in the predetermined area, and controls the wandering person monitoring device to maintain the monitoring state.

On the other hand, when the loitering person carrying the transmitter 1 shown in the block diagram of FIG. 1 is not present in the predetermined area, the high frequency transmitter circuit 13 of the transmitter 1 transmits intermittently for monitoring. High-frequency radio waves are received by the high-frequency receiving circuit 2
No reception is possible at 0, or normal reception is not possible, and the reception confirmation signal during monitoring is not output from the high frequency reception circuit 20 to the receiver control circuit 21. Further, in the receiver 2, the receiver control circuit 21 which cannot detect the reception confirmation signal at the time of monitoring from the high frequency receiving circuit 20 for a predetermined time or longer is that the wandering person carrying the transmitter 1 is absent in the predetermined area. The notification unit 22 makes a determination and outputs an absent notification control signal to notify that effect. The notification unit 22 of the receiver 2 that has detected the absence notification control signal causes the wandering person carrying the transmitter 1 to move within a predetermined area through means such as sounding a sound, displaying an image, and lighting a light. Notifying the observer of the absence (hereinafter referred to as absence notification).

It should be noted that while the wandering person carrying the transmitter 1 shown in the block diagram of FIG. 1 is not present in the predetermined area in the predetermined area, the wandering person is in the predetermined area while the notification section 22 of the receiver 2 is informing. Returning to the inside, the high frequency radio wave for monitoring, which is intermittently transmitted from the high frequency transmission circuit 13 of the transmitter 1, is normally received by the high frequency reception circuit 20 of the receiver 2. Further, in the receiver 2, the receiver control circuit 21 that detects the surveillance reception confirmation signal from the high frequency reception circuit 20 and determines that the wandering person carrying the transmitter 1 is present in the predetermined area is An operation stop control signal is output to the unit 22 to stop the absence notification, and the wandering person monitoring device is controlled to be in a monitoring state.

Next, during the above-mentioned wandering person monitoring, FIG.
When the wandering person releases the transmitter 1 shown in the block diagram 1, the human body detection sensor 10 of the transmitter 1 operates and outputs a sensor signal to the transmitter control circuit 12. When the transmitter control circuit 12 of the transmitter 1 detects the sensor signal from the human body detection sensor 10, the transmitter control circuit 12 outputs a non-portable control signal for generating a non-portable signal different from the above area monitoring signal from the signal generation circuit 11. To do. The signal generation circuit 11 of the transmitter 1 that has detected this non-portable control signal causes the radio wave intermittently transmitted from the high frequency transmission circuit 13 to be in phase with the above-mentioned high frequency radio wave for monitoring without interference with electromagnetic waves such as external noise. , A non-portable signal for determining that the transmitter 1 has been released by a wandering person, for example, as a modulation signal for generating a non-portable high-frequency radio wave having different amplitudes, etc. To do. In addition, the high frequency transmission circuit 13 of the transmitter 1
Performs intermittent transmission of a non-portable high frequency radio wave which is obtained by modulating (frequency modulating) the non-portable signal from the signal generating circuit 11 as a modulation signal.

In the block diagram of FIG. 1, the high frequency receiving circuit 20 of the receiver 2 which receives the non-portable high frequency radio wave intermittently transmitted from the high frequency transmitting circuit 13 of the transmitter 1 is non-portable to the receiver control circuit 21. When receiving a confirmation signal.
Further, in the receiver 2, the receiver control circuit 21 that has detected the non-portable reception confirmation signal from the high frequency receiving circuit 20 is
It is determined that the transmitter 1 has been released by the wandering person, and the notification unit 22 outputs a non-portable notification control signal to notify that effect. The notifying unit 22 of the receiver 2 that has detected the non-portable notification control signal indicates that the transmitter 1 has been activated via a means such as sounding a sound, displaying an image, lighting a light, etc. Informs the observer that it has been released by the wandering person (hereinafter referred to as non-mobile notification).
To do.

It should be noted that while the alarm unit 22 of the receiver 2 is informing the user that the transmitter 1 shown in the block diagram of FIG. 1 has been released by the wanderer, the transmitter 1 is again carried by the wanderer. Then, the output of the sensor signal from the human body detection sensor 10 of the transmitter 1 to the transmitter control circuit 12 is stopped, and the area monitoring signal from the signal generation circuit 11 under the control of the transmitter control circuit 12 caused by this is stopped. When the output is restarted, the intermittent transmission of the monitoring high frequency radio wave from the high frequency transmitting circuit 13 is also restarted, and the monitoring reception confirmation signal from the high frequency receiving circuit 20 of the receiver 2 receiving the monitoring high frequency radio wave is detected. Then, the receiver control circuit 21 outputs an operation stop control signal to the notification unit 22 to stop the non-portable notification, and controls the wandering person monitoring device to be in the monitoring state.

Next, the effect of the wandering person monitoring apparatus according to the first embodiment of the present invention, that is, when the wandering person releases the transmitter, the receiver notifies the effect (non-mobile notification). The wandering person monitoring device according to the second aspect of the present invention, which has the effect of enabling power saving by cutting off the power supply to the high-frequency transmitting circuit of the transmitter.
The wandering person monitoring apparatus according to the embodiment will be described below with reference to the drawings.

FIG. 2 is a block diagram showing a concrete configuration of the wandering person monitoring apparatus according to the second embodiment of the present invention. A radio wave carried by a wandering person and free from interference with electromagnetic waves such as external noise ( Hereinafter, a transmitter 51 for transmitting high frequency radio waves, here, a transmitter 51 for intermittent transmission, and a transmitter 5 installed on the observer side.
Whether or not the wandering person is in a predetermined area in the house (housing unit), nursing facility, etc., that is, in the presence or absence of the predetermined area, by receiving the high frequency radio wave intermittently transmitted from 1 It is composed of a receiver 52 for judging whether there is any.

The transmitter 51 shown in the figure has a human body detection sensor 60 for detecting that the wandering person has let go of the transmitter and outputs a sensor signal, and a sensor signal from the human body detection sensor 60. From a human body detection sensor 60 and a signal generation circuit 61 for outputting a non-portable signal generated by the above and an area monitoring signal indicating that the wandering person is in a predetermined area, that is, the presence of the wandering person in the predetermined area. The signal generating circuit 6 outputs the non-portable signal when the sensor signal is output, and outputs the area monitoring signal distinguished from the non-portable signal when the sensor signal is not output.
1 and the non-portable signal from the signal generation circuit 61 is output a predetermined number of times, and then the power supply circuit 6 to be described later.
4, a control circuit (hereinafter referred to as a transmitter control circuit) 62 that outputs a power cutoff signal for cutting off the supply of operating power from the high frequency transmission circuit 63, an area monitoring signal from the signal generation circuit 61, and a non-portable signal. Any one of the signals becomes a modulated signal, and high-frequency radio waves (high-frequency radio waves for monitoring and non-portable high-frequency waves described later) with different phases, amplitudes, etc. that are free from interference such as external noise are generated for intermittent transmission. When the power cutoff signal from the high frequency transmitter circuit 63 and the transmitter control circuit 62 is not input, operating power is supplied to the human body detection sensor 60, the signal generation circuit 61, the transmitter control circuit 62, and the high frequency transmitter circuit 63, respectively. On the other hand, when a power cutoff signal is input from the transmitter control circuit 62, a power supply for cutting off the supply of operating power to the high frequency transmission circuit 63. Road (hereinafter referred to as transmitter power circuit.) 64 and are provided.

Further, the receiver 52 shown in the figure includes a high frequency receiving circuit 70 for receiving a monitoring high frequency radio wave and a non-portable high frequency radio wave which are intermittently transmitted from the high frequency transmitting circuit 63 of the transmitter 51. , A high-frequency radio wave (a high-frequency radio wave for monitoring, a high-frequency radio wave for non-portable) that is received from the high-frequency receiving circuit 70 (hereinafter referred to as a reception confirmation signal during monitoring and a reception confirmation signal during non-portion). Based on the control of a control circuit (hereinafter referred to as a receiver control circuit) 71 and a receiver control circuit 71 in which a reception confirmation signal during monitoring cannot be detected for a certain time or longer, the fact that the wandering person is absent in a predetermined area is notified. At the same time, a notification unit 72 for notifying that the transmitter 51 has been released by the wandering person based on the control of the receiver control circuit 71 that has detected the reception confirmation signal when not in a mobile state, and a high frequency Shin circuit 70, a power supply circuit for supplying respective operating power to the receiver control circuit 71 (hereinafter,
It is called a receiver power circuit. ) 73 and are provided.

A specific operation of the wandering person monitoring apparatus according to the second embodiment of the present invention thus constructed will be described below.

The wandering person carrying the transmitter 51 shown in the block diagram of FIG. 2 monitors whether or not the wandering person is present or absent in a predetermined area such as a house (housing unit) or a nursing care facility. The human body detection sensor 6 of the transmitter 51 at the time of person monitoring
0, the signal generation circuit 61, the oscillator control circuit 62, and the high frequency generation circuit 63 are constantly supplied with power from an oscillator power supply circuit 64 as operating power. Further, also to the high frequency receiving circuit 70 and the receiver control circuit 71 of the receiver 52, the power from the receiver power supply circuit 73 is constantly supplied as the operating power supply.

It should be noted that, during the above-mentioned wandering person monitoring, FIG.
The operation when the wandering person carrying the transmitter 51 shown in the block diagram of FIG. 3 is present in a predetermined area, that is, a high frequency radio wave for monitoring is intermittently transmitted from the high frequency transmission circuit 63 of the transmitter 51, and this monitoring is performed. The operation of maintaining the monitoring state of the wandering person monitoring device by the control of the receiver control circuit 71 which has detected the reception confirmation signal during monitoring from the high frequency receiving circuit 70 of the receiver 52 which has received the high frequency radio wave for normal use. The operation when the wandering person carrying the transmitter 51 is absent in the predetermined area, that is, the high frequency radio wave for monitoring, which is intermittently transmitted from the high frequency transmitting circuit 63 of the transmitter 51, is received by the receiver 52.
The high frequency receiving circuit 70 cannot receive the signal, or cannot normally receive the high frequency receiving circuit 70, and cannot detect the reception confirmation signal at the time of monitoring from the high frequency receiving circuit 70. For operation,
Since the operation is the same as that of the wandering person monitoring apparatus according to the first embodiment of the present invention, the description thereof will be omitted.

First, during the above-mentioned wandering person monitoring, FIG.
When the wandering person releases the transmitter 51 shown in the block diagram 1), the human body detection sensor 60 of the transmitter 51 operates and outputs a sensor signal to the transmitter control circuit 62. When detecting the sensor signal from the human body detection sensor 60, the transmitter control circuit 62 of the transmitter 51 outputs a non-portable control signal for generating a non-portable signal different from the above area monitoring signal from the signal generation circuit 61. To do. The signal generation circuit 61 of the transmitter 51 that has detected the non-portable control signal is
As a modulation signal for making the radio wave intermittently transmitted from No. 3 a non-portable high frequency radio wave which has no interference with an electromagnetic wave such as external noise and has a phase, amplitude, etc. different from that of the above-mentioned high frequency radio wave for monitoring, And outputs a non-portable signal for judging that the transmitter 51 has been released by a wandering person. Further, the high frequency transmission circuit 63 of the transmitter 51 intermittently transmits the non-portable high frequency radio wave which is obtained by modulating (frequency modulation) the non-portable signal from the signal generating circuit 61 as a modulation signal.

In the block diagram of FIG. 2, the high frequency receiving circuit 70 of the receiver 52 which receives the non-portable high frequency radio wave intermittently transmitted from the high frequency transmitting circuit 63 of the transmitter 51.
Outputs a reception confirmation signal in the non-carrying state to the receiver control circuit 71. In the receiver 52, the high frequency receiving circuit 70
The receiver control circuit 71 that has detected the non-carrying reception confirmation signal from the device determines that the transmitter 51 has been released by the wandering person, and informs the notification unit 72 of that fact by the non-carrying notification. Output a control signal. The notification unit 72 of the receiver 52 that has detected the non-portable notification control signal detects that the transmitter 51 has a function such as sounding a voice, displaying an image, lighting a light, etc., which is different from the pattern for the absence notification described above. Notifying the observer that it has been released by the wandering person (hereinafter referred to as non-carrying notification).

Further, in the block diagram of FIG. 2, when the transmitter control circuit 62 of the transmitter 51 detects the sensor signal from the human body detection sensor 60, the non-portable signal from the signal generation circuit 61 is transmitted a predetermined number of times. For example, after outputting 5 times,
That is, after outputting the non-portable control signal to the high frequency transmission circuit 63 a predetermined number of times as described above, the power supply cutoff signal is output to the transmitter power supply circuit 64. Transmitter power circuit 6 of transmitter 51
When detecting a power cutoff signal from the transmitter control circuit 62, 4 cuts off the supply of operating power to the high frequency transmission circuit 63, and modulates (frequency modulates) the non-portable signal from the signal generation circuit 61 as a modulation signal. By stopping the intermittent transmission of the non-portable high frequency radio wave from the high frequency transmission circuit 63,
Power saving of the transmitter can be achieved.

The transmitter 51 shown in the block diagram of FIG.
When the transmitter 51 is carried by the wandering person again while the notifying unit 72 of the receiver 52 informs that the person has been released by the wandering person, the human body detection sensor 60 of the transmitter 51 transmits the transmitter 51. The output of the sensor signal to the control circuit 62 is stopped, and as a result, the output of the power cutoff signal from the transmitter control circuit 62 to the transmitter power supply circuit 64 is stopped. When the supply of operating power to the circuit 63 is started, the transmitter control circuit 6
By restarting the output of the area monitoring signal from the signal generating circuit 61 under the control of No. 2, the intermittent transmission of the monitoring high frequency radio wave from the high frequency transmitting circuit 63 is also restarted, and the receiver 52 receiving this monitoring high frequency radio wave. High frequency receiver circuit 7
The receiver control circuit 71 that has detected the monitoring reception confirmation signal from 0 outputs an operation stop control signal to the notification unit 72 to stop the non-portable notification, and controls the wandering person monitoring device to be in the monitoring state. .

[0043]

As is apparent from the above description, according to the wandering person monitoring apparatus of the present invention, when the wandering person releases the transmitter, the receiver installed on the side of the observing person notifies that fact. Not only can it be informed, but by cutting off the supply of operating power to the high-frequency transmission circuit of the transmitter, wasteful power consumption can be suppressed and power saving can be achieved.

[Brief description of drawings]

FIG. 1 is a block diagram showing a specific configuration of a wandering person monitoring apparatus according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a specific configuration of a wandering person monitoring apparatus according to a second embodiment of the present invention.

FIG. 3 is a block diagram showing a specific configuration of a conventional wandering person monitoring device.

[Explanation of symbols]

1, 51 ... Transmitter 2, 52 ... Receiver 10, 60 ... Human sensor 11, 61 ... Signal generation circuit 12, 62 ... Control circuit 13, 63 ... High-frequency oscillator circuit 64 ... Power supply circuit

Continued front page    F-term (reference) 5C086 AA22 BA30 CA06 CB27 DA04                       DA08 DA14 EA04 EA17                 5C087 BB20 BB72 DD03 DD49 EE08                       EE10 FF01 FF02 FF04 FF13                       FF16 GG69                 5H180 AA21 BB04 CC23                 5K048 AA09 AA16 BA41 CA01 CA04                       DB01 DC01 FB03 HA04 HA33

Claims (2)

[Claims] 1. A transmitter (1) which is carried by a wandering person and transmits high frequency radio waves, and a receiver (2) which receives the high frequency radio waves and judges whether the wandering person is in a predetermined area or not. The transmitter includes a human body detection sensor (10) for detecting that the wandering person has let go of the transmitter and outputting a sensor signal, and a non-portable device generated according to the sensor signal. A signal generation circuit (11) for outputting a signal and an area monitoring signal indicating that the wandering person is in a predetermined area.
And a control circuit (12) for controlling the signal generating circuit so as to output the non-portable signal when the sensor signal is output and output the area monitoring signal when the sensor signal is not output. ), And a high-frequency transmission circuit (13) for generating and transmitting the high-frequency radio wave by any one of the area monitoring signal and the non-portable signal from the signal generating circuit. Person monitoring device. 2. A transmitter (51) which is carried by a wandering person and transmits high frequency radio waves, and a receiver (52) which receives said high frequency radio waves and judges whether said wandering person is within a predetermined area. The transmitter includes a human body detection sensor (60) for detecting that the wandering person has let go of the transmitter, and outputting a sensor signal, and a non-portable device generated according to the sensor signal. A signal generation circuit (61) for outputting a signal and an area monitoring signal indicating that the wandering person is in a predetermined area.
And a high-frequency transmission circuit (63) for generating and transmitting the high-frequency radio wave by one of the area monitoring signal and the non-portable signal from the signal generation circuit, and supplying power to the high-frequency transmission circuit. Power supply circuit for (64)
And controlling the signal generating circuit so as to output the non-portable signal when the sensor signal is being output and output the area monitoring signal when the sensor signal is not being output. And a control circuit (62) for outputting a power cutoff signal to the power supply circuit to cut off the supply of power to the high frequency transmission circuit after the non-portable signal is output from the power supply circuit. Wanderer monitoring device.