JP2624455B2 - Portable alarm - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable alarm device capable of preventing valuables such as wallets, wallets, cards, and important documents from being stolen or left behind, and capable of effectively dealing with them.

[0002]

2. Description of the Related Art When a purse, a wallet, a card case, or the like is worn by a pickpocket or the like, it is often noticed that a long time has passed since then. In many cases, there is no way to do anything to find something. Also, in the case of a misplaced wallet or the like, even if you remember the place where you left it behind, when you return to that place after a certain period of time, the purse etc. has already been stolen and often lost as a result . In order to prevent such theft, misplacement, etc., it consists of a set of transmitter and receiver. The receiver is carried by the person, and the transmitter is put in a bag or the like containing valuables. When the bag is separated from the owner's body by a certain distance or more, a device that detects a decrease in the reception level of the received radio wave and issues an alarm with a receiver or a transmitter to prevent theft or the like has been considered (actually). No. 2-126292).

[0003]

According to the above-described conventional apparatus, even if an alarm sounds while a pickpocket or the like is stealing the bag and running away, the pickpocket or the like remains in the bag. If a person finds an alarm device, the person himself / herself can stop the alarm by turning off the power switch or alarm switch of the device, so it is not as effective as an anti-theft device and lacks certainty There was a disadvantage.

[0004] When an alarm in the bag is sounded due to misplacement of the bag or the like, to stop the alarm, return to the place where the bag was misplaced, open the bag and find the alarm device. When it is necessary to turn off the power switch of the alarm device, etc., if the alarm device cannot be taken out quickly, it takes a long time to stop the alarm, during which a large alarm will continue for a long time, causing trouble for the surroundings There was a disadvantage.

SUMMARY OF THE INVENTION In view of the above problems, the present invention comprises a master unit and a slave unit, and stops the alarm operation of the slave unit, turns on / off the power supply, and the like only by a radio signal from the master unit side, so that the slave unit alone It is an object of the present invention to provide a more effective portable alarm device by making it impossible to stop the alarm operation, turn on / off the power supply, and the like of the child device.

[0006] In addition, the alarm operation of the slave unit can be stopped by a radio signal from the master unit. Even if the alarm of the slave unit sounds due to misplacement or the like, the operation of the slave unit can be promptly performed by the operation of the master unit. It is an object to provide a portable alarm device capable of stopping an alarm.

It is another object of the present invention to provide a portable alarm device capable of performing a more effective alarm operation by configuring so that an alarm operation is performed not only on the child device but also on the master device side.

Further, all operations such as turning on / off the power of the master unit and the slave unit and stopping the alarms of the master unit and the slave unit can be performed by the operation of the master unit alone, so that the portable alarm device is easy to use. The purpose is to provide.

It is another object of the present invention to provide a portable alarm device capable of appropriately setting a distance between a master unit and a slave unit at which an alarm operation is started, by enabling an output level of a search radio wave to be adjustable.

It is another object of the present invention to provide a portable alarm device which can be easily inserted into a wallet or the like by changing the shape of a master unit and a slave unit into a card type and which is extremely portable and convenient.

[0011]

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention firstly comprises a master unit having a search radio wave transmitting function and a slave unit having a search radio wave reception function. A first operation state for supplying power to each unit to set the parent device to an operation state and setting the power supply of the child device to an on state, and a second operation state for turning off the power supply of the child device. Operating means which can adopt the following; an exploratory radio wave transmitting means for transmitting an exploratory radio wave to the slave at a predetermined first output level in the first operating state of the operating means; Power on / off command transmitting means for transmitting a power on signal to the slave unit in the operation state and transmitting a power off signal in the second operation state;
The slave unit supplies power to each unit based on the reception of the power-on signal from the master unit, sets the slave unit to an operation state, and sets each unit of the slave unit based on the reception of the power-off signal. Power on / off command receiving means for stopping power supply to the
In the above-mentioned operation state, the exploration radio wave receiving means for receiving the exploration radio wave, determining the reception level of the radio wave, and transmitting an alarm start signal when the level becomes equal to or less than a predetermined value, based on the input of the alarm start signal Alarm generating means for generating an alarm with an alarm means, wherein the alarm generating means of the slave unit stops the alarm operation only by the power supply stop operation by the power on / off command receiving means. A portable alarm device, secondly, the slave unit is
An alarm transmission unit configured to transmit an alarm signal having a second output level higher than the first output level to the base unit based on the input of the alarm start signal, wherein the base unit receives the alarm signal; The portable alarm device according to the first aspect, further comprising: an alarm generating unit that issues an alarm using an alarm unit based on the above. a third operation state to set the power-off state the power supply is stopped, in the third operating state of the second, wherein a is for stopping the alarm operation of the master unit Fourthly, the above-mentioned first, second or third aspect is characterized in that the above-mentioned base unit comprises an output adjusting means capable of adjusting an output level of the above-mentioned exploration radio wave.
Fifth, the portable alarm device according to any one of the first, second, third, and fourth features, wherein the master device and the slave device are formed in a portable card type. And a device.

[0012]

According to the first aspect of the present invention, the parent device is put in a pocket or the like and worn on the body, and the child device is put in a wallet or the like and put in a pocket or bag. Thereafter, when the operation means of the master unit is set to the first operation state, power is supplied to each unit of the master unit, the master unit is set to the operation state, and the power on / off command transmitting means transmits the power on signal to the child unit. Make a call to the machine. In this case, since the slave is within the radio wave range of the master, the power on / off command receiving means of the slave receives the power-on signal,
Based on the reception, power is supplied to each unit to set the slave unit to an operation state. Further, the search radio wave transmitting means of the master unit transmits a search radio wave to the slave unit at a predetermined output level. At this time, since the slave unit is at a position close to the master unit, the search radio wave is received and demodulated by the search radio wave receiving means of the slave unit, and its reception level is determined. At this time, as described above, since the slave unit is located sufficiently close to the master unit, the reception level becomes equal to or higher than the predetermined value, and the alarm operation is not performed.

In such a state, for example, if the wallet or the like containing the child device is picked up, the child device in the wallet separates from the parent device by the escape of the pickpocket. Since the search radio wave of the master unit is set to the first output level that reaches only within a certain distance, if the slave unit is separated from the master unit by the certain distance or more, the search radio wave reception means of the slave unit The reception level of the above-mentioned exploration radio wave decreases, and the same level falls below a predetermined value. Then, the receiving means detects this and sends an alarm start signal to the alarm generating means. The alarm generating means issues an alarm based on the input of the alarm start signal. Thereby, an alarm sound is generated from the child device in the wallet, and an alarm can be issued to the pickpocket person, the surrounding people, and the like. At this time, the pickpocket cannot stop the alarm of the slave unit.

After the wallet is recovered, the alarm can be stopped by setting the operation means of the master unit to the second operation state. Then, the power on / off command transmitting means of the parent device transmits a power off signal to the child device. Upon receiving the power-off signal, the power-on / off-command receiving means of the slave unit stops the power supply to each part of the slave unit based on the reception of the power-off signal, so that the power supply to the alarm generating means is also stopped, and the alarm is stopped. I do.

According to the second invention, when the alarm start signal from the exploration radio wave receiving means is input to the alarm transmitting means of the slave unit,
The alarm transmission means transmits an alarm signal at a second output level to the master unit. Since the second output level is higher than the first output level, the alarm signal is received by the master unit even when the master unit is separated from the slave unit by the certain distance or more, and the alarm of the master unit is received. When the generation means receives the alarm signal, the alarm generation means issues an alarm using the alarm means.
Therefore, the alarm sound can be generated by the slave unit and the alarm sound can be generated substantially simultaneously by the master unit.

According to the third aspect, when the operating means of the master unit is set to the third operating state, the power supply to each unit of the master unit is stopped, and the power supply to the alarm generating means is also stopped. The alarm sound of the master unit can be stopped.

According to the fourth aspect, by adjusting the output level of the output adjusting means, the first output level of the exploration radio wave can be adjusted. The separation distance of the aircraft can be set arbitrarily.

According to the fifth aspect, since both the master unit and the slave unit are formed in a portable card type, it is extremely portable and can be easily stored in a breast pocket, a purse or the like. .

[0019]

FIG. 1 is a block diagram of a portable alarm device of the present invention, and an embodiment of the present invention will be described in detail with reference to FIG. Reference numeral 1 denotes a master unit having an exploration radio wave transmitting function. Usually, the owner 2 (see FIG. 2) uses his / her own clothes pockets 2a and 2b.
Alternatively, it is placed in 2c, 2d or the like, and transmits a search radio wave to the slave unit 13 to perform a transmission operation. This parent machine 1
Is formed in a card shape having a length of 30 mm, a width of 60 mm and a thickness of 2 to 3 mm as shown in FIG. 5 (a), so that it is easy to carry and easily stored in a jacket pocket or the like. . In the parent machine 1, reference numeral 4 denotes an operation switch section (operation means), which is configured to be able to switch positions P1 to P3 by operating a slide switch 4a. 11a is a speaker.

In the master unit 1, reference numeral 3 denotes a power source, and 4 denotes the operation switch unit. As described above, three of P1, P2 and P3 are used.
It has three positions (first to third operation states). The position P1 is a power-on position for turning on the power of each circuit of the base unit 1 and transmitting a power-on signal to the slave unit 13 to set the power of the slave unit 13 to the on state. A power-off signal is sent to the slave unit 13 to turn off only the power of the slave unit 13 and to stop the alarm sound of the slave unit 13, and a slave unit power-off position P3 turns off the power of the master unit 1 and the master unit 1 The switch unit 4 can switch between these three positions by the slide switch 4a. The switch 4a is not limited to a slide switch, and may be constituted by a dial switch 4a '(see FIG. 5B), a push switch 4a "(see FIG. 5C), and the like. In (c), 4b is a position display window of the operation switch unit 4a ″.

Reference numeral 5 denotes a search radio wave transmission circuit (search radio wave transmission means), which converts a search radio wave obtained by modulating a carrier of the first carrier frequency set by the frequency setting circuit 6 with a specific signal to the slave unit 1.
3 The frequency setting circuit 6
Is set in advance, and for example, a frequency band such as ultrashort wave, short wave, or medium wave is used.

Reference numeral 7 denotes an output adjustment circuit (output adjustment means) which can adjust the output level of the exploration radio wave transmitted from the transmission circuit 5 and adjusts the output level to thereby reach the radio wave. Can be set. For example, by adjusting the output level and adjusting the reach distance to about 0.5
m, the pocket 2a as shown in FIG.
The radio wave reaches a range of a sphere C1 having a diameter of about 1 m around the parent device 1 in the center. Therefore, if the slave unit 13 is within the range of the ball C1, the radio wave transmitted from the master unit 1 will reach the slave unit 13. The reach distance can be appropriately set by adjusting the output level of the search radio wave by the output adjustment circuit 7.
When set to 7 m and 1.2 m, a sphere C2 having a diameter of about 1.4 m and a sphere C3 having a diameter of about 2.4 m as shown in FIGS.
Range. Of course, any distance other than the above can be set, and the output level may be set to a certain value in the circuit 7 in advance, or an adjustment switch or the like may be provided in The output level of the circuit 7 may be arbitrarily adjustable in several stages. In the case of this embodiment, it is assumed that the reach of the search radio wave is set to about 0.7 m (the range of the sphere C2) in advance.

Reference numeral 8 denotes a slave unit power ON / OFF command transmission circuit (power ON / OFF command transmission means). When the operation switch unit 4 is set to the position P1, the power supply 3 is supplied via the switch unit 4. In addition, a power-on signal is transmitted to the slave unit 13 at the second carrier frequency set by the frequency setting circuit 9 based on a signal from the switch unit 4. The second carrier frequency is set to a frequency different from the first carrier frequency, and the transmission output of the second carrier frequency is higher than the output level (reach distance 0.7 m) of the search radio wave set by the output adjustment circuit 7. And the power is set to a high output such that the power-on signal sufficiently reaches the slave unit even when the slave unit 13 is out of the range of the maximum reach (0.7 m) of the search radio wave. . When the operation switch section 4 is set to the position P2, the transmission circuit 8 changes the power-off signal based on the signal from the switch section 4 to the second carrier frequency and the high frequency similar to the power-on signal. The signal is transmitted to the slave unit 13 at the output level. Therefore, even if the slave unit 13 is located at a distance more than the maximum reach of the search radio wave from the master unit 1, the master unit 1
The power of the slave unit 13 can be turned off by the power off signal.

Reference numeral 10 denotes an alarm receiving circuit, which receives a warning signal of a third carrier frequency different from the first and second carrier frequencies as a radio wave from the slave unit 13 based on the reception of the warning signal. The alarm drive signal is sent to the alarm circuit 11. In this embodiment, the alarm receiving circuit 10 and the alarm circuit 11 constitute an alarm generating means.

Numeral 12 is a frequency setting circuit for setting the receiving frequency of the alarm receiving circuit 10. The frequency setting circuit 12 is configured to receive the alarm signal transmitted from the slave unit 13 so that the alarm receiving circuit 10 can receive the alarm signal. The tuning frequency of the circuit 10 is set to the third carrier frequency. The alarm circuit 11 emits an alarm sound from the speaker (alarm means) 11a based on the input of the alarm drive signal, and notifies the holder 2 that the slave unit 13 has been separated from the holder 2 for a predetermined time. is there. The warning sound is generated by generating an alarm sound such as a loud electronic sound or a siren sound from a thin speaker 11a (see FIG. 5A) provided in the base unit 1. May be used to vibrate the master unit 1 or to notify the holder 2 of the fact by flashing light, a combination of sound and flashing light, or the like.
Note that the alarm sound is generated when the operation switch section 4 is set to the position P.
Even if the power supply 2 is turned on, the power supply 3 is supplied to the alarm circuit 11 and the like, so that the sound is kept on. By setting the operation switch section 4 to the position P3, the power can be turned off based on the power off of the base unit 1. Further, a thin piezoelectric speaker, a buzzer, an alarm generator, or the like may be used as the speaker 11a.

Next, the configuration of the slave unit 13 having the search radio wave receiving function will be described. Slave unit 13 is 30 m long as shown in FIG.
It has a card shape similar to that of the master unit 1 having a size of 50 m, a width of 50 mm, and a width of 2 mm to 3 mm, and has a size that can be easily stored in a wallet or the like. 20a is a speaker for emitting an alarm sound. Note that no switch or the like is provided outside the slave unit 13, and the power of the slave unit 13 is turned on / off and the alarm sound is stopped only by the radio wave from the master unit 1.

In the slave unit 13, reference numeral 14 denotes a power on / off circuit. When a power on signal is input from a power on / off command receiving circuit 23, which will be described later, the power source 15 is turned on so that the slave unit 13 is in an operating state. 13 to each circuit. When a power-off signal is input from the receiving circuit 23, the supply of power to each circuit is stopped in order to stop the operation of the slave unit 13. The power supply 15 is supplied to the power supply on / off command receiving circuit 23 even when the power supply to the respective circuits of the slave unit 13 is stopped by the operation of the power supply on / off circuit 14. The power on / off command receiving circuit 23 is configured to always be in a state of waiting for input of a power on / off signal from the master unit 1.

Reference numeral 16 denotes a search radio wave receiving circuit, which receives a search radio wave transmitted from the master unit 1 at the first carrier frequency and sends the reception level to a level determination circuit 17.

Numeral 18 denotes a frequency setting circuit for setting the reception frequency of the exploration radio wave receiving circuit.
6 is to set the tuning frequency of the receiving circuit 16 to the first carrier frequency so that the probe 6 can receive the search radio wave of the first carrier frequency. The level determination circuit 17 detects the reception level of the search radio wave input from the search radio wave reception circuit 16 and sends an alarm start signal to the signal output circuit 19 when the level falls below a predetermined level. . When the reception level is equal to or higher than the predetermined level, the alarm start signal is not output. In this embodiment, the search radio wave receiving circuit 16 and the level determining circuit 17
Constitutes the exploration radio wave receiving means.

Reference numeral 19 denotes the signal output circuit, which sends out an alarm drive signal to the alarm circuit 20 based on the input of the alarm start signal from the level judgment circuit 17 and sends an alarm send signal to the alarm sending circuit 21. Things.

Reference numeral 20 denotes the alarm circuit, which drives the speaker 20a based on the input of the alarm drive signal to emit an alarm sound, and the base unit 1 is a fixed distance from the slave unit 13 (0.7 m in this embodiment). ) It informs that it has been separated.
The warning sound is generated by emitting a loud electronic sound, a siren sound or the like from a thin speaker (warning means) 20a provided in the slave unit 13. May be configured to be performed in combination. The speaker 20a is connected to the speaker 11
Similar to a, a thin piezoelectric speaker, a buzzer, an alarm generator and the like are used. In this embodiment, the signal output circuit 19
The alarm circuit 20 constitutes an alarm generating means.

Reference numeral 21 denotes the alarm transmission circuit, which transmits an alarm signal to the base unit 1 at the third carrier frequency set by the frequency setting circuit 22 based on the input of the alarm transmission signal from the signal output circuit 19. It is sent to. The frequency setting circuit 22 sets the carrier frequency of the alarm signal to a third carrier frequency different from the first or second carrier frequency. Note that the output level of the alarm signal is set higher than the exploration radio wave. For example, in the case of the present embodiment, even when the slave unit 13 is separated from the master unit 1 by 0.7 m or more, the alarm signal is transmitted to the master unit 1. The output level is set to a sufficiently high output level (for example, a reach distance of 100 m). In this embodiment, the signal output circuit 19 and the alarm transmission circuit 21 constitute an alarm transmission unit.

Reference numeral 23 denotes the power on / off command receiving circuit.
When a power-on signal of the second carrier frequency is received from the sub-unit power-on / off command transmission circuit 8 of the main unit 1, the power-on signal is detected and sent to the power-on / off circuit 14 and the sub-unit 13 is detected. Are set to the operating state. When a power-off signal is received from the power-on / off command transmission circuit 8, the power-off signal is detected and the power-on / off circuit 14 is detected.
A power-off signal is sent to the slave unit to stop the operation of each circuit of the slave unit. The slave unit 1 is controlled by the power on / off circuit 14.
When the power supply to each circuit is stopped, the alarm circuit 2
Since the power supply to 0 is also stopped, when an alarm is sounding on the speaker 20a, the alarm is stopped. Reference numeral 24 denotes a frequency setting circuit for setting the tuning frequency of the power ON / OFF command receiving circuit 23 to the second carrier frequency. In this embodiment, the power on / off command receiving circuit 23 is used.
The power on / off circuit 14 constitutes a power on / off command receiving means.

The present invention is constructed as described above, and its operation will be described below. First, the slave unit 13 is put in a purse, for example, and the holder 2 puts the purse in a pocket (for example, the pocket 2b). Next, the operation switch unit 4 of the master unit 1 is set to the position P1, the power of the master unit 1 and the slave unit 13 is turned on, and the master unit 1 is put in the pocket 2a (see FIG. 2). .

When the switch section 4 is set to the position P1, the power supply 3 is supplied to the search radio wave transmitting circuit 5, the alarm receiving circuit 10, the alarm circuit 11, and other circuits of the master unit 1 and the master unit 1 operates. State. Further, a power-on signal is transmitted from the switch unit 4 to the slave unit power-on / off command transmission circuit 8. Then, a power-on signal is sent from the transmission circuit 8 at the second carrier frequency set by the frequency setting circuit 9 to the slave unit 13.
It is sent to. Then, the power ON signal is received and demodulated by the power ON / OFF command receiving circuit 23 in the operation standby state of the slave unit 13, and the power ON / OFF circuit 14
A power-on signal is sent out. The power on / off circuit 14
Supplies the power supply 15 to the exploration radio wave receiving circuit 16, the level determination circuit 17, the alarm circuit 20, the alarm transmission circuit 21 and other circuits of the slave unit 13 based on the input of the signal,
Is set to the operating state.

The exploration radio wave transmitting circuit 5 of the base unit 1 has the first carrier frequency set by the frequency setting circuit 6 based on the supply of the power supply 3 and the predetermined carrier frequency set by the output adjusting circuit 7. Outputting a search signal including a specific signal at the output level to the slave unit 1
Send to 3 Note that, as described above, the reach of the search radio wave is set to 0.7 m. At this time, FIG.
Since the holder 2 puts the purse in the pocket 2b as shown in FIG. 4, the slave unit 13 is within a radio wave range of 0.7 m from the master unit 1, and the exploration radio wave is transmitted to the child in the pocket 2b. The signal level is easily received and demodulated by the search radio wave receiving circuit 16 of the device 13, and the level determination circuit 17 determines the reception level of the search radio wave received. In this case, as described above,
Is within the reach of the exploration radio, the level determination circuit 1
7, it is detected that the reception level is equal to or higher than the predetermined level, no alarm start signal is sent from the determination circuit 17, and the reception state of the search radio wave in the search radio wave reception circuit 16 is maintained.

In this state, for example, when a pickpocket or the like escapes by pursuing the wallet of the holder 2 and is separated from the master unit 1 by 0.7 m or more, the search by the search radio wave reception circuit 16 of the slave unit 13 is performed. The reception level of the radio wave decreases or the circuit 16 cannot receive the search radio wave. At this time, the level determination circuit 17 detects that the reception level has become equal to or lower than the predetermined level, and outputs an alarm start signal to the signal output circuit 19 based on the detection.

The signal output circuit 19 transmits an alarm drive signal to the alarm circuit 20 based on the input of the alarm start signal, and also transmits an alarm transmission signal to the alarm transmission circuit 21. Then, the alarm circuit 20 emits a loud alarm sound from the speaker 20a based on the input of the alarm drive signal. As a result, it is possible to warn the person running away with the wallet and warn the surrounding people,
Also, the alarm sound can notify the surroundings of the location of the pickpocket person. In addition, as described above, since there are no switches such as a power switch on the surface of the slave unit 13 at all, even if the picking person finds the slave unit 13 in the wallet, the alarm sound cannot be stopped. . Therefore, the above-mentioned alarm sound continues to sound, and it is possible to continuously issue an alarm to the pickpocket person and surrounding persons.

On the other hand, the alarm transmission circuit 21 transmits an alarm signal to the base unit 1 at the third carrier frequency set by the frequency setting circuit 22 based on the input of the alarm transmission signal. The output level of the alarm signal is set to a high output so that the main unit 1 can reach the main unit 1 even if it is far away from the sub unit 13 (for example, 100 m). The signal is received and demodulated by the alarm receiving circuit 10 of the base unit 1.

The alarm receiving circuit 10 of the base unit 1 sends an alarm drive signal to the alarm circuit 11 based on the detection of the alarm signal, and the alarm circuit 11 drives the speaker 11a to emit an alarm sound. Therefore, an alarm is issued from the slave unit 13 and the master unit 1 substantially simultaneously. As a result, the owner 2
Can notice that his wallet is more than 0.7m away from him, in this case a pickpocket.

Since a loud alarm sounds from the slave unit 13 in the wallet of the pickpocket, the location of the pickpocket can be easily grasped by the sound. In addition, since the pickpocket person cannot stop the alarm sound of the slave unit 13 as described above and keeps sounding the alarm sound, it attracts the attention of the surroundings, and is notified by the two owners or the surrounding people. The pickpocket can be easily captured by police or the like. In addition, the holder 2 can easily retrieve his wallet.

After the owner 2 has recovered his or her wallet, when the alarm sound of the slave unit 13 is to be stopped, the owner 2 may operate the operation switch unit 4 of the master unit 1 to set it to the position P2. Then, a signal indicating that the power is turned off is sent to the slave unit power on / off command transmission circuit 8 of the master unit 1, and the transmission circuit 8 transmits a power off signal at the second carrier frequency based on the input of the signal. The call is transmitted to the slave unit 13. In this case, the slave 1
3 is very close to the base unit 1, the power off signal is easily received and demodulated by the power on / off instruction receiving circuit 23 of the slave unit 13, and the circuit 23 sends a power off signal to the power on / off circuit 14. . The power on / off circuit 14 stops power supply to the exploration radio wave receiving circuit 16, the level determination circuit 17, the signal output circuit 19, the alarm circuit 20, and the alarm transmission circuit 21 based on the input of the power off signal. Therefore, the power supply to the alarm circuit 20 is stopped, and based on this, the alarm sound emitted from the speaker 20a is stopped, whereby the alarm sound of the slave unit 13 can be stopped. At this time, the power supply ON / OFF command receiving circuit 23 still supplies the power supply 15
Is supplied, and the slave unit 13 enters a standby state for inputting the power-on signal from the master unit 1.

Further, in order to stop the alarm sound of the main unit 1, the operation switch unit 4 of the main unit 1 may be operated to set the position to the position P3. Then, the supply of power from the power supply 3 to each circuit of the master unit 1 is stopped by the operation of the switch unit 4.
Therefore, the power supply to the alarm circuit 11 is also stopped, and the alarm sound from the speaker 11a is stopped.

FIG. 7 shows another example of the external appearance of the master unit and the slave unit. As shown in FIG. 7, the master unit 1 'and the slave unit 13' may be formed in a medal shape. The parent machine and the child machine may be formed in various shapes such as a one-piece type or a button type (cuff button type). Note that in FIG.
a 'and 20a' are thin speakers, 4c is a slide switch of an operation switch unit, and the diameter of the main unit 1 'is about 32 m.
m, the diameter of the slave unit 13 'is about 28 mm.

As described above, in the present invention, the power supply switch, the alarm stop switch and the like are not provided at all in the slave unit 13 and the alarm is stopped only by the radio signal from the master unit 1. Even if you find a slave unit 13 that gives an alarm in a worn wallet, you cannot stop the alarm, and the pick-up will abandon your wallet and flee, and will also give an alarm to nearby people. Because it is possible to continue, an extremely effective alarm device can be provided.

Further, since the alarm operation of the slave unit 13 can be stopped by a radio signal from the master unit 1, even if the alarm of the slave unit 13 in the wallet sounds due to the misplacement of the wallet or the like, the master unit can be stopped. The alarm of the slave unit 13 can be stopped promptly by the operation on the first side, and the alarm continues to sound for a long time due to misplacement, so that the misplaced item can be quickly collected without disturbing the surroundings. It is very effective in preventing misplacement.

Further, since the alarm operation is performed almost simultaneously not only on the slave unit 13 but also on the master unit 1 side, the alarm generation distance is set long, the surrounding noise is large, and the alarm of the slave unit 13 is performed. Is difficult to hear, it is possible to reliably know theft, misplacement, and the like from the alarm sound of the main unit 1, and to provide a more effective alarm device.

Further, the master unit 1 and the slave unit 1 are operated only by the three-position switching operation of the operation switch unit 4 on the master unit 1 side.
Since all operations such as turning on / off of the power supply 3 and stopping the alarm of the master unit 1 and the slave unit 13 can be performed, all operations can be performed by one-touch switching of the operation switch unit 4 on the master unit side. Thus, it is possible to provide an extremely convenient portable alarm device.

Further, by setting the output level of the exploration radio wave to be adjustable, the distance between the master unit 1 and the slave unit 13 at which the alarm operation is started can be appropriately set, so that it can be set according to various situations. To set the optimum alarm start distance.

Further, since the shape of the master unit 1 and the slave unit 13 is formed into a card type which is easy to carry, it can be easily inserted into a wallet or the like, and is extremely portable and convenient.

In the above embodiment, the case where the parent device 1 is put in a pocket or the like and the child device 13 is put in a wallet or the like has been described.
In a purse or the like, and the child device 13 is put in a driver's license, a business card holder, a passport, etc., and the same effect can be obtained even if the driver's license etc. is dropped. Etc. may be stored. Master device 1 side (wallet, etc.)
When the slave unit 13 (license or the like) is worn even when the base unit 1 is dropped, the master unit 1
Also, since the alarm is sounded by the slave unit 13, the same effect as in the above embodiment can be obtained. As still another example, if the slave unit 13 is attached to a painting or the like displayed at an exhibition or the like and the master unit 1 is worn by a watcher, the above-described painting or the like is stolen. An alarm can be issued by the same operation as that of the embodiment, and it can be effectively applied as an anti-theft device for paintings, jewelry and the like. Although radio waves are used in the above embodiment, similar effects can be obtained by using ultrasonic waves, infrared rays, or the like instead of exploration radio waves.

[0052]

As described above, according to the present invention, the alarm of the slave unit is stopped only by the radio signal from the master unit. However, the alarm cannot be stopped, and the alarm can be continued to be issued to the surrounding people thereafter, so that an extremely effective alarm operation can be performed.

When the alarm of the child device in the wallet sounds due to the misplacement of the wallet or the like, the alarm of the child device can be immediately stopped by the operation of the parent device, and the misplaced item can be collected. For example, the alarm does not sound for a long time and does not bother others.

Further, since the alarm operation is performed not only on the slave unit but also on the master unit side, even when the alarm of the slave unit is difficult to hear, the alarm sound of the master unit surely prevents theft, It is possible to know the misplacement, etc., and to perform a reliable alarm operation.

Further, since the respective operations such as turning on / off the power supply of the master unit and the slave unit and stopping the alarm of the master unit and the slave unit can be performed only by the switching operation of the operation means on the master unit side, it is extremely possible. A portable alarm device with good usability can be provided.

Further, by setting the output level of the exploration radio wave to be adjustable, the distance between the master unit and the slave unit at which the alarm operation is started can be appropriately set, and the optimum value can be set according to various situations. Alarm start distance can be set.

Further, since the shape of the master unit and the slave unit is formed in a card type which is easy to carry, it can be easily inserted into a wallet or the like, and it is extremely convenient to carry.

[Brief description of the drawings]

FIG. 1 is an electrical block diagram of a portable alarm device according to the present invention.

FIG. 2 is a front view of a holder showing a radio wave reach distance in a state where the portable alarm device of the present invention is carried.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a side view of FIG. 2;

5A is a perspective view of a master unit, FIG. 5B is a partially cutaway perspective view of the master unit showing another example of an operation switch unit, and FIG. 5C is another example of the operation switch unit. FIG. 3 is a partially cutaway perspective view of the parent machine.

FIG. 6 is a perspective view of the slave unit.

FIG. 7A is a perspective view showing another example of the master unit, and FIG. 7B is a perspective view showing an example of the slave unit.

[Explanation of symbols]

 Reference Signs List 1 master unit 4 operation switch unit 5 search radio wave transmission circuit 7 output adjustment circuit 8 slave unit power ON / OFF command transmission circuit 10 alarm receiving unit 11 alarm circuit 11a speaker 13 slave unit 16 search radio wave reception circuit 20 alarm circuit 21 alarm generation unit 20a Speaker 23 Power ON / OFF command receiving circuit

Claims (5)

(57) [Claims] 1. A master unit having an exploration radio wave transmitting function and a slave unit having an exploration radio wave reception function. The master unit supplies power to each unit to set the same master unit to an operation state and to operate the slave unit. Operating means capable of taking a first operation state for setting the power supply to an on state and a second operation state for turning off the power supply of the slave unit; and a predetermined operation state in the first operation state of the operation means. Exploration radio wave transmitting means for transmitting a search radio wave to the slave at the first output level, and transmitting a power-on signal to the slave in the first operation state of the operation means and the second operation state And a power-on / off command transmitting means for transmitting a power-off signal at the sub-unit. The sub-unit supplies power to each unit based on the reception of the power-on signal from the master unit, and controls the sub-unit. Set to the operating state and Power on / off command receiving means for stopping power supply to each part of the slave unit based on the reception of the signal, receiving the search radio wave in the above operation state, determining the reception level of the radio wave, and determining that the level is a predetermined value Exploration radio wave receiving means for transmitting an alarm start signal when the following conditions are satisfied, and alarm generating means for issuing an alarm with the alarm means based on the input of the alarm start signal, A portable alarm device, wherein the generating means stops the alarm operation only by the power supply stop operation by the power on / off command receiving means. 2. The alarm device according to claim 1, wherein the slave unit includes an alarm transmission unit that transmits an alarm signal having a second output level higher than the first output level to the master unit based on the input of the alarm start signal. 2. The portable alarm device according to claim 1, wherein the master unit includes an alarm generating unit that issues an alarm using an alarm unit based on the reception of the alarm signal. 3. An operation means of the master unit has a third operation state in which power supply to each unit of the master unit is stopped and a power-off state is set. 3. The portable alarm device according to claim 2, wherein the alarm operation is stopped. 4. The portable alarm device according to claim 1, wherein the master unit includes an output adjusting unit capable of adjusting an output level of the search radio wave. 5. The portable alarm device according to claim 1, wherein the parent device and the child device are formed in a portable card type.