JP2009249118A - Trash box control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable anti-terrorism measures for a trash box by utilizing a sensor network although it has been difficult to introduce anti-terrorism trash boxes at low costs and arrange them at any place in a conventional art. <P>SOLUTION: To avoid a trash box from being used for terrorism by inserting a hazardous material in a trash box, which is located in public facilities and which the general public can contact, in advance, a slot is sealed with a tape and the like by a controller, and brought into a unusable condition. This trash box control system comprises a sensor part, a storage part, a calculation part, an abnormality notifying part, and a control part. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to a trash can installed in a station, for example, and monitors a dumping of dangerous goods while an administrator is in a use-not-permitted state such as closing a trash can lid.

Since the Spanish train terrorism that occurred in March 2004, some of the trash bins in the station have been completely removed from some stations from the viewpoint of anti-terrorism measures such as strengthening warning against suspicious items. Considering the convenience of passengers, the minimum number of installations is required.

Relocation of the removed trash can is left up to the railway companies. Some of the trash cans are replaced with transparent boxes that can be seen from the outside, and dangerous goods explode in the trash cans. However, there are movements such as replacing it with a strong box that prevents explosives from splashing outside.

On the other hand, with increasing security awareness, monitoring means using a monitoring camera are attracting attention. For example, there is a means for capturing an image only when the target moves within the capturing screen, and the use and efficiency of the recording medium is improved (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 2003-34869

As mentioned above, the trash can has been made transparent for the purpose of preventing terrorism from being used for terrorism. However, if the trash can is made transparent, it identifies dangerous goods thrown into other trash. Difficult to do. In addition, the installation of a trash can where the contents can be seen is problematic on the landscape.

In addition, as described above, with regard to replacement with a strong trash can that can withstand the explosion of dangerous goods, for example, a trash can of 1 million yen has been commercialized. It is unrealistic to do.

In addition, as described above, there are situations in which surveillance cameras are difficult to function due to privacy problems and the characteristics of the location of a trash can that is easily installed in the shadow of a pillar.

As described above, according to the conventional technology, it is difficult to introduce a trash can with anti-terrorism at a low price or arrange it at any place.

In order to solve the above problems, the present invention provides:
In order to prevent the use of terrorism by inserting dangerous goods in trash cans that can be contacted by an unspecified number of people in public facilities, the entrance is sealed with tape etc. by the administrator and used For trash bins that are disabled,
A sensor unit that is installed at the bottom of the trash can lid and detects objects in the trash can at regular intervals,
A storage unit for accumulating detection results of the sensors;
A calculation unit that calculates a difference between a past detection result and a current detection result stored in the storage unit;
An abnormality notifying unit that determines that the foreign substance has been illegally dumped in the trash when the calculation unit identifies the difference, and notifies by radio,
A management unit that collectively manages information from the abnormality notification unit;
A trash can management system consisting of

In the present invention, the sensor unit may be a vibration sensor that can obtain information even in a dark place, and is a vibration sensor that actively generates vibration in a trash can to measure a vibration wave. A trash box management system is characterized by being a vibration sensor that measures vibration waves in a trash box using generated vibrations.

According to another aspect of the present invention, the trash can includes a relay unit that relays wireless communication so that a plurality of housings constitute an autonomous distributed network.

According to the present invention, an administrator puts in a tape or the like by a manager in order to prevent the use of terrorism by inserting dangerous goods into a trash can that can be contacted by an unspecified number of people. With regard to a trash bin that has been sealed and cannot be used, when someone forcibly releases the input port seal and inserts a dangerous object, the sensor detects that the situation inside the trash bin has changed. The administrator can be notified by the autonomous decentralized wireless network between the trash bins.

A preferred embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a configuration diagram of a trash can management system according to the present invention. The sensor unit 101 that monitors the state in the trash box A at certain intervals with respect to a certain trash box A outputs the detection result to the storage unit 103 and the calculation unit 105. The storage unit 103 holds past detection results and outputs the previous detection results to the calculation unit 105.

The sensor unit 101 is not only used to project the image of the trash box A as image information, such as an ultrasonic sensor or an infrared sensor. For example, the sensor unit 101 vibrates the trash box A at regular intervals and detects the vibration wave. Various means such as a means for detecting the falling speed of the object when the object to be moved crosses the front of the sensor can be considered. In this embodiment, the detection means using the ultrasonic sensor will be described.

As described above, the latest sensor image P detected by the sensor unit 101 and the sensor image Q one hour before transmitted by the storage unit 103 are input to the calculation unit 105.

The calculation unit 105 compares P and Q and transmits the result to the abnormality notification unit 107. If there is no difference in the comparison result, the abnormality notification unit 107 stops the processing. However, if a difference is recognized as a result of the comparison, the abnormality notification unit 107 transmits the identification ID information of the trash bin A to the wireless network 111. Send a notification signal with.

In general, the trash can is often installed in the shadow of a pillar, and the signal may not be transmitted due to the propagation characteristics of the radio signal, so that it is not suitable for a radio network centering on a base station. Therefore, an autonomous distributed wireless network (wireless ad hoc network) form in which information is transmitted to a trash box that exists further ahead through the communication device of the nearest trash box is suitable.

Therefore, information transmitted from the trash box A is transmitted to the trash box that exists further ahead, for example, via the relay unit 113 of the trash box B. Similarly, the repeater of the trash box A may relay the abnormal signal generated by the trash box B.

A management unit 109 that manages a plurality of trash bins accesses the wireless network 111 and, when a trash bin that has issued an abnormal signal is found, identifies the trash bin by the added identification ID.

FIG. 2 shows an example of the mounting position of the sensor. In the example, the ultrasonic sensor 205 is attached under the lid part 201 to obtain an entire view in the trash box 203. Note that the ultrasonic sensor 205 may include the storage unit 103, the calculation unit 105, the abnormality notification unit 107, and the relay unit 113 in the casing, or may be a separate casing.

FIG. 3 is an example of a sensor image when a foreign object is illegally dumped into a sealed trash can. A sensor image 301 before the foreign object is discarded and a sensor image 303 after the foreign object 305 is discarded.

The arithmetic unit 105 compares the image 301 and the image 303 and, when determining that there is a difference, notifies the management unit via the wireless network.

As described above, according to the present invention, regarding the installation of the sensor unit 101, the storage unit 103, the calculation unit 105, the abnormality notification unit 107, and the relay unit 113, each of them may be housed in a single casing. The case where only the part 101 is installed in the trash box and the other parts are installed outside the trash box is also included.

Further, as described above, the present invention is not limited to the case where an ultrasonic sensor is used as the sensor unit 101, but may be a sensor that uses other photographing means such as an infrared sensor. Further, there are various sensor means such as vibrating the trash box at a constant interval and measuring the vibration wave, and the present invention does not specify the means.

FIG. 4 relates to a case where a vibration sensor is used as an example. In the figure, as an example, a vibration sensor 405 is installed below the trash can lid 401 to detect a vibration wave 407 propagating through the trash cans 401 and 403.

The vibration source may be installed adjacent to the vibration sensor 405, or may utilize vibration that is naturally generated by the environment around the trash can. When this method is used, when a foreign object is illegally dumped in a sealed trash box, a warning signal can be generated by utilizing the difference between the case where the trash box is empty and the vibration wave 407.

Configuration diagram according to the present invention Example of embodiment An example of foreign object detection Example of embodiment using vibration wave sensor

Explanation of symbols

101 ... sensor unit, 103 ... storage unit, 105 ... calculation unit,
107: Abnormality notification unit, 109 ... Management unit, 111 ... Wireless network,
113 ... Relay part,
201, 401 ... trash can lid, 203, 403 ... trash can body,
205, 405 ... sensor part,
301 ... Detection results accumulated in the storage unit,
303 ... Latest detection result,
305 ... Foreign matter inserted in the trash,
407: Vibration wave.

Claims (3)

In order to prevent the use of terrorism by inserting dangerous goods in trash cans that can be contacted by an unspecified number of people in public facilities, the entrance is sealed with tape etc. by the administrator and used For trash bins that are disabled,
A sensor unit that is installed at the bottom of the trash can lid and detects objects in the trash can at regular intervals,
A storage unit for accumulating detection results of the sensors;
A calculation unit that calculates a difference between a past detection result and a current detection result stored in the storage unit;
An abnormality notifying unit that determines that the foreign substance has been illegally dumped in the trash when the calculation unit identifies the difference, and notifies by radio,
A management unit that collectively manages information from the abnormality notification unit;
A trash can management system. The sensor unit is a vibration sensor that can obtain information even in a dark place, and is a vibration sensor that actively generates vibration in a trash can to measure a vibration wave, or the vibration generated around the trash can. The trash can management system according to claim 1, wherein the trash can management system is a vibration sensor that measures vibration waves in the trash can. The trash can management system according to claim 1, wherein the trash can includes a relay unit that relays wireless communication so that a plurality of casings constitute an autonomous distributed network.