JP2000207651A - Burglar preventing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a burglar preventing device which suppresses the consump tion of a battery as much as possible even in the case of arrangement of an electronic apparatus in the vicinity. SOLUTION: Recognizing that a signal analysis part 36 has decided that a signal is not a preliminarily set signal, a CPU 31 discriminates whether the time counted by a timer 35 for alarm has reached a prescribed time or not after clearing the counted time of an operation timer 33 and performing again the operation for time re-counting. Discriminating that the time counted by the timer 35 for alarm has reached the prescribed time, the CPU 31 makes an output part 37 operate a buzzer and discriminates whether a signal has been given again to an input part 32 or not after emitting a second alarm tone of battery consumption.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-theft device that detects the state of attachment to an object to be stolen and issues an alarm.

[0002]

2. Description of the Related Art FIGS. 8 and 9 are explanatory views for explaining a use state of a self-sounding anti-theft tag. FIG. 8 shows a case where a mounting tool to an object is a wire, and FIG. And the case where the attachment to the object is a pin.

[0003] As shown in FIG. 8, a wire 94 connects two insertion portions, each of which is formed by covering a conductive pin-shaped member with an insulating material except for its tip, by a connecting portion having a flexible conductor covered with an insulating material. An annular groove is provided on the peripheral surface near the tip of both insertion portions. Two insertion holes into which the insertion portions of the wires 94 are inserted are formed on one end surface of the strip-shaped tag body, and the insides of both insertion holes are engaged with the above-described grooves to lock the insertion portions. A locking mechanism is provided. Then, the wire 94 is inserted through a button hole of the outerwear and shirt or a tag or the like provided at the collar of the clothing (the buttonhole of the outerwear in FIG. 8), and a mounting portion of the object T, and the insertion portion of the wire 94 is inserted into the tag. The anti-theft tag 91 is attached to the object T by inserting it into the insertion hole of the main body until the groove and the lock mechanism engage.

As shown in FIG. 9, the pin 95 has a needle-shaped leg suspended from the center of the lower surface of a disk-shaped head, and an annular surface is formed on the peripheral surface near the tip of the leg. A groove is provided. An insertion hole into which the leg of the pin 95 is inserted is provided near one end of the surface of the tag body, and a lock mechanism for engaging the groove and locking the leg is provided inside the insertion hole. . Then, the leg of the pin 95 is connected to the stitch of the knit product, the button hole of the shirt, etc. (the stitch of the knit product in FIG. 9),
Then, the anti-theft tag 92 is attached to the object T by inserting the leg of the pin 95 into the insertion hole of the tag body until the groove engages with the lock mechanism.

The tag body shown in FIGS. 8 and 9 includes an antenna for receiving a signal transmitted from a transmitter, a buzzer, a battery, and the like. The transmitter uses an anti-theft tag 91,
A signal having a strength receivable by the 92 is transmitted into a predetermined area, and a transmitter is provided at a gate installed at an entrance, so that an object to which the anti-theft tags 91 and 92 are attached is provided. When T approaches the gate and the tag body receives a signal transmitted from the transmitter, the tag body activates a buzzer and emits an alarm sound to prevent the object T from being stolen.

The wire 94 and the pin 95 function as normally closed contacts. When the wire 94 or the pin 95 is pulled out of the tag body in order to remove the anti-theft tags 91 and 92 from the object T, When the tag is disconnected, the tag body detects it and activates the buzzer to emit an alarm sound.

[0007]

By the way, in addition to the transmitter provided at the gate, an electronic device for transmitting a radio signal, such as a portable telephone and a portable personal computer, may be carried near the antitheft device. Therefore, when the anti-theft device receives any radio signal, it determines whether or not the signal is transmitted from the above-mentioned transmitter, and if so, activates a buzzer and emits an alarm sound. ,
If not, the buzzer will not be activated.

When the electronic device is arranged near such a conventional anti-theft device, the anti-theft device performs the above-described determination operation every time a radio signal is transmitted from the electronic device. However, since the user cannot detect that the anti-theft device is operating, the anti-theft device has a problem in that the battery is consumed by repeating the determination operation and finally stops operating.

The present invention has been made in view of the above circumstances, and an object of the present invention is to minimize battery consumption even when an electronic device is arranged in the vicinity. An object of the present invention is to provide a possible anti-theft device.

[0010]

According to a first aspect of the present invention, there is provided an anti-theft apparatus comprising: a receiver for receiving a signal; a detector for detecting a state of attachment to an object to be prevented from being stolen; and an alarm for outputting an alarm. An output unit, a signal analysis unit that analyzes a signal received by the receiver to determine whether the signal is a predetermined signal, and a detection result of the detector and a determination result of the signal analysis unit based on the detection result. An anti-theft device comprising: an alarm output control unit that controls an output operation of the alarm output unit; a reception determination unit that determines, at a predetermined cycle, whether the receiver has received a signal; and (1) when the reception determining means determines that a signal has been received, a means for determining whether or not the first timing means is clocking; and Let the means start timing And a timing determining means for determining whether or not the time counted by the first timing means has reached a predetermined time each time the signal analyzing means determines that the signal is not a predetermined signal, and wherein the alarm output control means comprises: When the timing determination means determines that the predetermined time has been reached, the alarm output device is activated.

The reception judging means judges at a predetermined period whether or not the receiver has received a signal. When judging that the signal has been received, the first time judging means judges whether or not the first timer is counting. When it is determined that the first clock is not clocking, the first clock is started. The signal analyzing means analyzes the signal received by the receiver to determine whether or not the signal is a predetermined signal, and when it is determined that the signal is the predetermined signal, the alarm output control means outputs an alarm to the alarm output device. Let it.

On the other hand, if the signal analyzing means determines that the signal is not the predetermined signal, the timing determining means determines whether the time counted by the first timing means has reached a predetermined time,
If it is determined that the predetermined time has been reached, the alarm output control means causes the alarm output device to output an alarm. With this, the user can detect that the anti-theft device is operating by a radio signal transmitted from an electronic device other than the transmitter, so that the user performs a measure to stop the operation of the anti-theft device, Consumption can be suppressed as much as possible.

[0013] In the anti-theft device according to the second invention, in the first invention, when the reception judging unit judges that a signal has been received, the signal analyzing unit and the alarm output control unit are consumed from a standby state with low power consumption. Means for shifting to an operation state with a large amount of power, second time-measuring means for measuring time since the transition to the operation state, and means for determining whether or not the time-measurement time of the second time-measuring means has reached a predetermined time Means for shifting the signal analysis means and the alarm output control means from the operating state to the standby state when it is determined that the predetermined time has been reached; and each time the signal analysis means determines that the signal is not the predetermined signal, Means for initializing the time measured by the time measuring means.

The signal analysis means and the alarm output control means are in a standby state with low power consumption, and when the reception judgment means judges that the signal has been received, the signal analysis means and the alarm output control means are changed from the standby state. Move to operating state.
The second timer measures the time from the transition to the operating state, and when the measured time reaches a predetermined time, causes the signal analyzer and the alarm output controller to transition from the operating state to the standby state. During this time, each time the above-mentioned signal analysis means determines that the signal is not a predetermined signal, the time measurement time of the second time measurement means is initialized.

Thus, the consumption of the battery can be further suppressed, and the output of an alarm performed when a signal determined to be not a predetermined signal by the signal analyzing means is received for a predetermined time is secured. When a signal transmitted from a moving electronic device is received, the signal analysis unit and the alarm output control unit enter an operating state. However, when the electronic device leaves, the signal analysis unit and the alarm output control unit enter a standby state. The transition to the state prevents an alarm from being output accidentally.

Further, even if the time measured by the first time measuring means reaches a predetermined time and an alarm is output from the alarm output device, the signal transmission is stopped or the signal transmission source is If it is far, the signal analysis means and the alarm output control means shift to a standby state, and the output of the alarm stops. Thereby, the consumption of the battery can be suppressed as much as possible, and the mischief by the transmitter can be prevented.

According to a third aspect of the present invention, in the first or second aspect of the invention, the alarm output control means is provided when the detector detects removal from the object or when the signal analyzing means detects a predetermined signal. When it is determined that is, the first alarm is output to the alarm output device, and when the timing determination means determines that the predetermined time has been reached, the second alarm is output to the alarm output device. There is a feature.

A first alarm notifies that the object has been stolen, and a second alarm different from the first alarm provides
Notify battery exhaustion. This allows the user to
It is possible to distinguish between the consumption of the battery and the occurrence of theft, and it is possible to quickly perform the corresponding treatment.

[0019]

Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is an external perspective view showing an example of the anti-theft device according to the present invention, and FIG. 2 is an exploded perspective view of the anti-theft device shown in FIG. The strip-shaped outer box 1 is formed by ultrasonically joining a pair of the front box member 2 and the rear box member 3 together. Front box member 2
And a printed wiring board 11 in the rear side box member 3;
The button switch 20 and the button battery 5 are stored,
The button battery 5 is fitted inside a circular cover member 4 containing a buzzer.

On the front of the substrate 11, a resonance device 12 for receiving a signal of a predetermined frequency, and generation of an alarm sound by a buzzer based on a signal received by the resonance device 12 and an opening / closing signal given from the button switch 20 And a microcomputer 30 for controlling the operation. Further, the substrate 11 is provided with four contacts 14, 14, 14, 14 and the like connected to the button switch 20.

The button switch 20 has a column-shaped sensor button 22 protrudingly provided at the center of the front of a rectangular case 21 so as to be able to move in and out, and a slide button 23 is provided at a position spaced from the sensor button 22. The outer box 1 is provided so as to be slidable in the longitudinal direction. On the back surface of the case 21, a pair of electrodes related to the slide button 23 and a pair of electrodes related to the sensor button 22 are provided with the respective contacts 14, 14, 14, 14 provided on the substrate 11 described above.
It is provided so as to abut against.

In the vicinity of the upper end of the front box member 2, a circular first hole through which the sensor button 22 of the button switch 20 passes is provided.
2a, and a rectangular second for operating the slide button 23
A hole 2b is formed, and the periphery of the second hole 2b is tapered such that the thickness of the front side box member 2 becomes thinner toward the second hole 2b. In addition, a circular third hole 2c in which the cover member 4 described above is fitted is opened substantially at the center of the front box member 2, and an alarm sound is emitted near the lower end of the front box member 2. A window 2d is provided.

As shown in FIG. 1, the sensor button 22 of the button switch 20 is dimensioned to penetrate the first hole 2a of the front box member 2 and protrude from the front box member 2 by an appropriate length. , The slide button 23 is a second hole of the front side box member 2.
2b so as not to protrude from the front side box member 2. This prevents a gap from being formed between the front box member 2 and the object when the anti-theft device is attached to the object to be stolen.

FIGS. 6 and 7 are explanatory views for explaining the use state of the anti-theft device shown in FIG. Anti-theft device 10
The sensor button is pressed by contacting the front surface of the object T such as a box and a case with the front surface thereof.
22 is pushed into the outer box 1 to close the circuit, and in this state, it is attached to the object T with an attaching material such as a synthetic resin wrap or an adhesive tape. In addition, a transmitter for transmitting a signal having a strength that can be received by the anti-theft device 10 into a predetermined area is provided at a gate installed at the entrance.

In such an anti-theft device 10, when the anti-theft device 10 is removed from the object T by removing the mounting member, the sensor button 22 protrudes to open the circuit. Upon detection, the buzzer is activated to emit a first alarm sound to prevent the object T from being stolen.

On the other hand, when the object T to which the anti-theft device 10 is attached approaches the gate and the anti-theft device 10 receives a signal transmitted from the transmitter, the built-in microcomputer activates the buzzer to activate the second buzzer. (1) A warning sound is emitted to prevent the object T from being stolen. In addition, the antitheft device 10 receives radio signals intermittently or continuously transmitted at appropriate intervals from electronic devices other than the transmitter, and when the time count reaches a predetermined time, the built-in microcomputer activates a buzzer. Is activated to emit a second alarm sound to notify the user that the apparatus is operating.

FIG. 3 is a functional block diagram of the microcomputer 30 shown in FIG. 2, and FIGS. 4 and 5 are flowcharts for explaining the operation of the microcomputer 30 when receiving a signal. CPU of microcomputer 30
31 is in a standby state in which current consumption is small until a signal is supplied from the above-described resonance device 12 (see FIG. 2) to the input unit 32 (step S1), and when a signal is supplied to the input unit 32, An operation timer that shifts to an operation state in which current consumption is large (step S2) and measures the operation time of the CPU 31
33 is operated (step S3).

The CPU 31 determines whether or not a signal is supplied to the input unit 32 again (step S4). If the signal is supplied, a flag is set to set a flag when an alarm timer 35 described later is operating. With reference to the setting unit 34, it is determined whether or not a flag is set there (step S10).
If the CPU 31 determines that the flag is not set in the flag setting unit 34, it activates the alarm timer 35 (step S11), sets the flag in the flag setting unit 34 (step S12), and then sets the signal analyzing unit 36. To analyze the signal given to the input section 32 (step S1).
3).

In step S10, the CPU 31 sets the flag
If it is determined that the flag is set at 34, step S11
Step S12 is skipped, and step S12 described above is skipped.
Perform 13 actions. The CPU 31 converts the signal given to the input unit 32 by the signal analysis unit 36 into a preset signal,
That is, it is determined whether or not it is determined that the signal is transmitted from the transmitter provided in the gate (step S14). If it is determined that the signal is a preset signal, the output unit is determined.
37, the buzzer is operated to generate a first alarm sound for theft prevention (step S20).

On the other hand, if the CPU 31 determines in step S14 that the signal is not a preset signal, it performs a restart operation for clearing the time counted by the operation timer 33 and then counting the time again (step S30). Then, it is determined whether or not the time measured by the alarm timer 35 has reached a predetermined time (step S31). When determining that the time measured by the alarm timer 35 has reached the predetermined time, the CPU 31 activates the output unit 37 to activate the buzzer, and generates a second alarm sound indicating battery exhaustion (step S32). Then, the process returns to step S4. Also, CP
If U31 determines that the time measured by the alarm timer 35 has not reached the predetermined time, step S32
Is skipped and the process returns to step S4 to determine whether or not a signal has been supplied to the input unit 32 again.

When the user issues the second alarm sound,
After performing a reset operation for shifting the anti-theft device to the standby state, it is determined that electronic devices other than the transmitter provided at the gate are present near the anti-theft device, and the arrangement of the anti-theft device or the corresponding electronic device is determined. change. Thereby, battery consumption of the anti-theft device can be suppressed as much as possible.

If the CPU 31 determines in step S4 that no signal has been supplied to the input unit 32 again, the operation timer
It is determined whether or not the measured time of 33 has reached a predetermined time (step S40). If the CPU 31 determines that the time measured by the operation timer 33 has not reached the predetermined time, the process returns to step S4.

At step S40, the CPU 31 sets an operation timer
When it is determined that the clock time of the timer 33 has reached the predetermined time, the clock time of the operation timer 33, the clock time of the alarm timer 35, and the flag setting unit 34 are cleared (step S4).
1) Even if the second alarm sound is output, the operation of the operation timer 33, the alarm timer 35, the flag setting unit 34, the signal analysis unit 36, and the output unit 37 is stopped to enter the standby state. The process proceeds (step S42).

If a mischief occurs using a transmitter that transmits a signal different from the signal transmitted by the transmitter provided at the gate, the microcomputer 30 causes the buzzer to generate the second alarm sound as described above. It is necessary to stop the signal transmission by the container and stop the mischief. At this time, as described above, when the time counted by the operation timer 33 reaches a predetermined time, the microcomputer 30 stops outputting the second alarm sound and shifts to a standby state, so that the user does not perform a reset operation. In addition, battery consumption can be suppressed as much as possible.

In the above-described embodiment, the case where the detector for detecting the state of attachment to the object is a button switch has been described. However, the present invention is not limited to this, and a wire or a pin may be used. Needless to say, it may be attached to the object to detect the state of the wire or the pin.

[0036]

As described above in detail, in the anti-theft device according to the first aspect of the invention, the user can confirm that the anti-theft device is operating by a radio signal transmitted from an electronic device other than the transmitter. Therefore, it is possible to take measures to stop the operation of the anti-theft device and to suppress the consumption of the battery as much as possible.

In the anti-theft device according to the second invention,
The consumption of the battery can be further suppressed, and the output of an alarm that is performed when a signal analyzed by the signal analysis unit as a non-predetermined signal is received for a predetermined time is secured. Also, it is possible to prevent an alarm from being output accidentally. Further, it is possible to suppress the consumption of the battery as much as possible and prevent mischief by the transmitter.

In the antitheft device according to the third invention,
The present invention has an excellent effect that the user can discriminate between the consumption of the battery and the occurrence of the theft, and can quickly perform the corresponding treatment.

[Brief description of the drawings]

FIG. 1 is an external perspective view showing an example of an anti-theft device according to the present invention.

FIG. 2 is an exploded perspective view of the anti-theft device shown in FIG.

FIG. 3 is a functional block diagram of the microcomputer shown in FIG.

FIG. 4 is a flowchart illustrating an operation of the microcomputer when receiving a signal.

FIG. 5 is a flowchart illustrating an operation of the microcomputer when receiving a signal.

FIG. 6 is an explanatory diagram illustrating a use state of the anti-theft device shown in FIG. 1;

FIG. 7 is an explanatory diagram illustrating a use state of the anti-theft device shown in FIG. 1;

FIG. 8 is an explanatory diagram illustrating a use state of a self-sounding anti-theft tag.

FIG. 9 is an explanatory diagram illustrating a use state of a self-sounding anti-theft tag.

[Explanation of symbols]

 Reference Signs List 1 outer box 5 button battery 10 anti-theft device 11 substrate 20 button switch 30 microcomputer 31 CPU 33 operation timer 34 flag setting unit 35 alarm timer 36 signal analysis unit

Claims (3)

[Claims] 1. A receiver for receiving a signal, a detector for detecting a state of attachment to an object to be prevented from being stolen, an alarm output for outputting an alarm, and analyzing a signal received by the receiver. Signal analysis means for determining whether the signal is a predetermined signal, and alarm output control for controlling an output operation of the alarm output device based on a detection result of the detector and a determination result of the signal analysis means. Means for determining whether or not the receiver has received a signal in a predetermined cycle, first time measuring means for measuring time, and the reception determining means has received a signal. Means for judging whether or not the first time measuring means is measuring time;
When it is determined that the time is not measured, the time measured by the first time measuring means reaches a predetermined time every time the means for starting the first time measuring means and the signal analyzing means determines that the signal is not a predetermined signal. Timer output determining means for determining whether or not the alarm output device is activated when the timer output determining means determines that the predetermined time has been reached. Characteristic anti-theft device. 2. A means for causing the signal analysis means and the alarm output control means to transition from a standby state with low power consumption to an operation state with high power consumption when the reception determination means determines that a signal has been received, A second timing means for measuring the time since the transition to, and a means for determining whether or not the time measured by the second timing means has reached a predetermined time, and when it is determined that the predetermined time has been reached, Means for shifting the signal analysis means and the alarm output control means from the operating state to the standby state;
2. The anti-theft device according to claim 1, further comprising: means for initializing a time measured by the second time measuring means each time the signal analyzing means determines that the signal is not a predetermined signal. 3. The alarm output control means outputs a first alarm to the alarm output device when the detector detects removal from the object or when the signal analysis means determines that the signal is a predetermined signal. The anti-theft device according to claim 1, wherein the alarm output device outputs a second alarm when the timer unit determines that the predetermined time has elapsed.