JP3476768B2 - Anti-theft device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention detects an approaching person to an object managed underwater and gives a warning to the approaching object in order to prevent damage or theft of the object managed underwater. At the same time, it relates to an anti-theft device capable of notifying the surroundings of the occurrence of an abnormality and notifying a remote manager.

[0002]

2. Description of the Related Art Conventionally, as a method for preventing theft of an object managed in water, for example, patrol by a human or monitoring with a camera installed, which is performed in a seafood farm. The suspicious ship or person approaching an object under water is discriminated by means such as the above, and a sound is emitted. Further, a device that automatically emits an alarm sound when an suspicious person is detected by using an infrared sensor has been put into practical use.

[0003]

The above-described conventional antitheft method has the following problems. First of all, how to manually monitor a suspicious ship or a suspicious person. It must be monitored by humans at all times, which is troublesome. Secondly, in the method using the infrared sensor, there is a possibility that a suspicious ship or a suspicious person may not be detected or misidentified due to vibration of waves such as a buoy holding the infrared sensor.

In this case, in particular, the alarm at the time of erroneous recognition is not preferable because it not only causes annoyance to the surroundings but also results in a loss of reliability of the device. The present invention is
It was made in order to solve such a conventional problem, that the suspicious ship or a suspicious person is automatically detected and an alarm is sounded and an abnormal state occurs in the administrator, not by manual monitoring. It is intended to provide a device that can notify the

[0005] Further, unlike a conventional automatic alarm generator, a ship or a person approaching an object under water is swiftly and reliably determined without affecting the surroundings, and automatically. The purpose of the present invention is to provide a device that can alert the person approaching the controlled object to the fact that he / she is being monitored and sensed.

[0006]

According to the invention, the aforesaid problems are solved by the means defined in the claims .

[0007]

The invention according to claim 1 compares an underwater microphone that detects sound in water with a threshold value of the sound detected by the underwater microphone, and generates a warning signal when it is larger than the threshold value. Which outputs the warning signal output by the control section to the underwater as a sound, and a cable connecting the object and the float managed in the water.
Le a, a disconnection sensor which detects a disconnect of the cable, when the cutting of the cable is detected by the warning signal is output and the disconnection sensor from the control unit, air in the warning signals the control unit outputs Bei and a speaker to be output to the
An antitheft device characterized by obtaining.

[0009] The second aspect of the present invention is the anti-theft device according to claim 1, accommodates a water microphone underwater speaker in the water within the apparatus, the inside in the aqueous system, for hanging on the float or該浮Ko It is configured such that the speaker is engaged with a portion immersed in water and the speaker is engaged with a portion of the float that appears on the water surface.

[0010]

[0011]

According to the invention of claim 3 , an underwater microphone for detecting sound in water and a level of the sound detected by the underwater microphone are compared with a threshold value, and when it is larger than the threshold value, a warning signal is generated. Which outputs the warning signal output by the control section to the underwater as a sound, and a cable connecting the object and the float managed in the water.
And Le, a disconnection sensor which detects a disconnect of the cable, if the warning signal from the controller is output, or when the disconnection sensor detects the disconnection of the cable, to notify the administrator by wireless communication Device for communication, and the control unit
A warning signal is output from the
When a disconnection of Buru is detected, an anti-theft device characterized by and a speaker for outputting a warning signal the control unit outputs into an empty.

According to a fourth aspect of the present invention, in the antitheft device according to the third aspect, the underwater microphone and the underwater speaker are housed in an underwater device, and the underwater device is hung on a float or the float. It is structured such that the speaker and the communication device are engaged with the portion of the float that is submerged in water, and the speaker and the communication device are engaged with the portion of the float that appears on the water surface.

The invention of claim 5 relates to claim 2 or claim
The anti-theft device as described in Item 4 , wherein an object managed in water and a float are connected by a cable.

[0015]

According to a sixth aspect of the present invention, in the antitheft device according to the fourth aspect, the radio wave transmitted from the communication device includes information that can identify the float or an object managed underwater. Is.

The invention of claim 7 relates to claim 1 to claim 6.
In the anti-theft device according to any one of 1 above, the sound detected by the underwater microphone is analyzed for frequency, level, and phase, and the result is compared with stored past data to identify the sound source. It is configured by providing a means for performing.

The anti-theft device of the present invention has the above-mentioned structure and has means for automatically issuing a warning from the water by sensing the sound generated by a ship or a person approaching a managed object in the water. By having this means, it is possible for a person to go underwater or above water without requiring human labor such as observing underwater management objects by ship or constantly monitoring with a telescope. A warning can be issued to an oncoming person.

At this time, the underwater speaker efficiently transmits sound in water, but the transmission of sound is greatly attenuated in the air. Therefore, a warning sound reaches the ship near the site,
The warning sound does not reach up to the land away from the scene. Therefore, it is possible to prevent theft by issuing a warning sound without disturbing the surrounding land by noise. On the other hand, when it is used in an environment where it is not necessary to worry about disturbing noise on the surrounding land, a warning sound can be emitted using a speaker that emits sound in the air.

In the anti-theft device of the present invention, in addition to the above means, a wire break sensor for detecting a wire break between an object managed in water and an object that holds the object under control, and a speaker for emitting a sound in the air are provided. , A warning can be issued when a disconnection occurs between a managed object underwater and an object that holds it under control. By having this means, it is possible to issue an alarm to the surroundings without requiring human labor.

In addition, the antitheft device of the present invention is provided with a communication device in addition to the above-mentioned means, so that when a wire breakage occurs between an object managed in water and an object holding it in place. Means can be provided to automatically notify the caretaker of the object. By having this means, it is possible to promptly notify the person who manages the underwater managed matter, without requiring human labor.

Further, in the antitheft device of the present invention, in addition to the above-mentioned means, by providing a device for performing frequency analysis, volume level analysis and phase analysis by analyzing the sound generated by the approaching person detected by the underwater microphone, It has means for distinguishing and identifying an approaching individual. By this means, by collating each analysis data with the data of the past approaching individual, the approaching individual can be quickly and surely identified or specified.

Among the anti-theft devices of the present invention, those having no float are used by being attached to existing buoys, underwater structures and the like. The structure having a float can be used not only by connecting it to an object managed in water with a cable, but also by connecting the float to a pile driven into the bottom of the water or by fixing it with an anchor or the like.

[0024]

1 is a view showing an example of an embodiment of the present invention, which is an anti-theft device used in a fish farm, which has a float and is placed on the water of the float. An example is shown in which a speaker and a notification device are attached to the surface on which the float appears and the float and the underwater management object (seafood culture equipment) are connected by a cable.

This anti-theft device is a seafood culture instrument 1-
1, a float 1-2, a cable 1-3 connecting the seafood aquaculture equipment 1-1 and the float 1-2, a device (in-water device) 1-4 incorporating an underwater microphone and an underwater speaker, a disconnection sensor and a communication device. It is composed of a built-in device (reporting device) 1-5, a float 1-2, a cable 1-6 connecting a device 1-4 containing an underwater microphone and an underwater speaker, and a speaker 1-7.

FIG. 2 shows an example of the configuration of the underwater device (device having a built-in underwater microphone and underwater speaker) 1-4 in FIG. The underwater device 1-4 uses the input signal from the underwater microphone 2-1, the underwater speaker 2-2, and the underwater microphone 2-1 to determine whether or not to issue a warning, and outputs a control signal to the underwater speaker. It is composed of a judgment / control device 2-3 for outputting.

FIG. 3 shows an example of the configuration of the reporting device (device incorporating a disconnection sensor and a communication device) 1-5 in FIG.
The reporting device 1-5 includes a disconnection sensor 3-1 that detects that the cable 1-3 has been disconnected, a communication device 3-2 that automatically reports to the manager of the aquaculture equipment 1-1, and a disconnection sensor 3 −
The control device 3-3 outputs a control signal to the speaker 1-7 and the communication device 3-2 based on the signal input from 1.

Next, the operation of the apparatus shown in FIG. 1 will be described. Flow charts of the operation are shown in FIGS. The letters in parentheses in the following description correspond to the letters shown in FIGS. 4 and 5. In FIG. 4, when the antitheft device of FIG. 1 is operating, the seafood culture instrument 1-which is an antitheft object 1
1, an underwater device 1-4 having a built-in underwater microphone and an underwater speaker, which is present in the immediate vicinity of 1, operates underwater microphone 2
-Determining and controlling device by incorporating underwater sound from -1 2-3
In the above, the warning transmission is judged.

When a suspicious person approaches the seafood culture equipment 1-1, the sound generated from the boat used for the approach or the sound generated when the approaching person operates in water is judged through the underwater microphone 2-1. -Sent to the control device 2-3 (A). Consider the determination at the volume level as a means for determining the warning of the approach of a suspicious person and issuing a warning.

Generally, as the target is approached, the volume level of the generated sound as described above increases. When a certain volume level is reached, the determination / control device 2-3 sends a control signal to the underwater speaker, and a warning signal is transmitted from the underwater speaker to the approaching person from the water (B,
C). The warning signal may be a method such as a specific warning sound or a synthetic voice. Warning or alarm signals are not limited to audible frequencies, and include all signals propagating in air and water including ultrasonic waves.

The approaching person ignores the warning from the underwater speaker, approaches the target seafood culture equipment 1-1 and attempts to steal, and the cable 1 connecting the seafood culture equipment 1-1 and the float 1-2. Consider the case of cutting -3. At this time, the disconnection sensor 3-1 detects disconnection of the cable 1-3 (D) and outputs a signal to the control device 3-3. The control device 3-3 receives the signal from the disconnection sensor 3-1, and the speaker 1-7
A control signal is sent to, and an alarm is issued from the speaker 1-7 to the surroundings (E).

At the same time, a control signal is sent to the communication device 3-2 to notify the manager via the communication device. If a certain period of time has passed since the warning was sent from the underwater speaker,
A stop signal is sent from the control device 2-3 to the underwater speaker (F). In this way, it is possible to prevent the theft or expansion of the seafood culture equipment.

FIG. 4 shows a case where an alarm is issued from a speaker in the air when a cable break is detected, but even if a cable break is not detected, a suspicious person can approach the suspicious person. If detected, a warning may be issued from a speaker in the air.

Similarly, when the disconnection of the cable is detected, it is shown that the manager is notified, but even if the disconnection of the cable is not detected, the approach of the suspicious person is detected. In that case, the administrator may be notified. At this time, the warning may be issued from the underwater speaker, or the warning from the underwater speaker may be suppressed. The administrator is notified by wireless communication using a communication device.

Further, when there is no detection of an approaching person by the underwater microphone and the disconnection of the cable is detected by the disconnection sensor, it is judged as an accidental disconnection and only the manager is notified as shown in FIG. (G, H). In the above-described operation, the determination of the sound volume level was considered as the determination means of the determination / control device 2-3, but determination by frequency analysis or phase analysis may be considered.

By using the frequency analysis to extract the features such as engine sound and screw sound emitted from the ship, it is possible to identify the approaching person and identify the approaching person's ship. Further, by detecting the arrival direction of the approaching individual by phase analysis, the approaching individual can be similarly identified. Further, by storing the above analysis result as data and using it for the analysis, it is possible to quickly determine the approaching person.

For example, by comparing the analysis result with past data, it is possible to quickly identify a regular approaching individual. FIG. 6 shows an example of a configuration for realizing such a function. An in-water device 1-4 having a built-in underwater microphone and an underwater speaker is provided with an analysis device for performing frequency analysis and phase analysis and a database, and a mechanism for storing the analysis result in the analysis device in the database is provided.

That is, the underwater device is replaced by the underwater microphone 6-
1, an underwater speaker 6-2, a determination / control circuit 6-3, an analysis device 6-4, and a database 6-5. Then, the underwater sound obtained via the underwater microphone is constantly analyzed using a database, and the analysis result is sent to the determination / control circuit. At the same time, the analysis results are sent to the database and the analysis results are accumulated. The determination / control circuit determines whether or not to issue a warning based on these analysis results.

The circuit composed of such a judgment / control circuit, an analysis device, and a database may be realized as an independent unit without being incorporated in the underwater device.
For example, it goes without saying that it may be incorporated in the notification device 1-5 or the speaker unit 1-7 in FIG.

Further, in the configuration of FIG. 1, the underwater device is drawn so as to be suspended in the water by the cable, but the invention is not limited to this. For example, the underside of the float 1-2 may be directly attached to the underwater surface. You may attach it. Also, an example is shown in which one seafood aquaculture device 1-1 is connected to the float 1-2 by the cable 1-3, but a plurality of seafood aquaculture devices are connected to one float 1-2. It may be configured to monitor.

In addition, the seafood culture equipment 1-1 is attached to the float 1-
2 without floating cable 1-3, float 1
It is also possible to adopt a configuration in which -2 is fixed to the vicinity of the seafood culture instrument 1-1 by an anchor. Even in this case, the in-water device can detect the intrusion and the trend of the suspicious person. Since it is not connected by a cable, it is not possible to detect the disconnection, but by utilizing the reflection of the emitted electromagnetic waves by the fish-culture equipment, or in some cases, by attaching a transmitter to the fish-culture equipment, the fish It may also be possible to detect that aquaculture equipment has been stolen.

[0042]

As described above, by using the antitheft device of the present invention, damage such as theft of a managed object underwater can be prevented without requiring human labor. Further, it is possible to automatically issue a warning to a suspicious approaching person without causing any trouble to the surroundings. Furthermore, even if a managed object in water is about to be taken away, an alarm can be issued and a manager in a remote place can be notified, so that it is possible to prevent the spread of theft damage. .

Further, in the present invention, an abnormality is detected by detecting a person or a ship approaching an underwater managed object by a sound emitted from them or by disconnecting a cable connecting the underwater managed object. Therefore, there is an advantage that even when the visibility is poor at night or in thick fog and the visual observation by the camera or the telescope is impossible, the reliable observation can be performed and the theft can be prevented.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of an embodiment of the present invention.

FIG. 2 is a block diagram showing an example of the configuration of an underwater device.

FIG. 3 is a block diagram showing an example of the configuration of a notification device.

FIG. 4 is a flowchart showing the operation of the example of the embodiment of the present invention.

FIG. 5 is a flowchart showing the operation of the example of the embodiment of the present invention.

FIG. 6 is a block diagram showing another example of the configuration of the submersible device.

[Explanation of symbols]

1-1 Seafood culture equipment 1-2 float 1-3 Cable connecting seafood culture equipment and float 1-4 Underwater device 1-5, reporting device 1-6 Cable that connects the float to underwater equipment 1-7 speaker 2-1, 6-1 Underwater microphone 2-2, 6-2 Underwater speaker 2-3 Judgment / control device 3-1 Disconnection sensor 3-2 Communication device 3-3, 6-3 Control device 6-4 Analyzer 6-5 Database

Continuation of front page (56) Reference JP-A-8-235454 (JP, A) JP-A-10-197295 (JP, A) JP-A-2000-155881 (JP, A) JP-A-2000-30156 (JP, A) ) Actual development Sho 58-88871 (JP, U) Special table 2000-514656 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G08B 1/00-31/00

Claims (7)

(57) [Claims] 1. An underwater microphone that detects sound underwater, and a level of the sound detected by the underwater microphone is compared with a threshold value,
When it is larger than a threshold value, a control unit that generates and outputs a warning signal, an underwater speaker that outputs the warning signal output by the control unit to the water as sound, an object and a float managed underwater. Cable to connect
When disconnection sensor and, and the disconnection sensor is output warning signal from the control unit for detecting a disconnection of the cable
Anti-theft device, characterized in that when the cutting of the cable is detected, obtain Preparations and a speaker for outputting a warning signal the control unit outputs into an empty by. 2. An underwater microphone and an underwater speaker are housed in an underwater device, and the underwater device is hung on a float or attached to a portion of the float submerged in water, and the speaker is attached to the float. Attached to the part that appears on the water surface of
The antitheft device described in 1 . 3. An underwater microphone that detects sound underwater, and a level of the sound detected by the underwater microphone is compared with a threshold value,
When it is larger than the threshold value, and a control unit for generating and outputting a warning signal, a warning signal that the control unit outputs, underwater speaker for outputting in water as sound, the object and float managed in water Cable to connect
And a disconnection sensor that detects disconnection of the cable, and when a warning signal is output from the control unit, or
When the disconnection sensor detects disconnection of the cable, a communication device for notifying an administrator by wireless communication, and a warning signal from the control unit and the disconnection sensor
Anti-theft device, characterized in that when the cutting of the cable is detected, obtain Preparations and a speaker for outputting a warning signal the control unit outputs into an empty by. 4. An underwater microphone and an underwater speaker are housed in an underwater device, and the underwater device is hung on a float or attached to a portion of the float that is submerged in water. The speaker and the communication device. The anti-theft device according to claim 3 , wherein a part of the float is exposed on the surface of the water. 5. The antitheft device according to claim 2 , wherein an object managed in water and the float are connected by a cable. 6. The antitheft device according to claim 4 , wherein the radio wave transmitted from the communication device includes information capable of identifying the float or an object managed in the water. 7. A means for identifying a sound source by analyzing the frequency, level, and phase of the sound detected by the underwater microphone and comparing the result with the stored past data. The antitheft device according to any one of claims 1 to 6 .