JP7319019B2 - detection system - Google Patents

Description

The present invention relates to sensing systems.

Patent Literature 1 discloses a technique related to an abnormality detection device for an opening/closing structure constructed using a wireless tag. The anomaly detection device in this prior art includes a detection device equipped with a function of transmitting and receiving radio waves, and a response signal to the detection device based on a radio signal transmitted from the detection device attached to an opening/closing structure such as a window or door. It consists of wireless tags. Also, the wireless tag has a switch that detects the open/close state of the open/close structure and enables or disables the signal transmission function. A detection device detects the presence or absence of a response signal from the wireless tag and outputs a detection signal.

JP 2005-115409 A

The technique disclosed in Patent Document 1 requires a wireless tag to have a switch that detects the open/closed state of the opening/closing structure and enables or disables the signal transmission function, resulting in a complicated system.

In view of the above facts, the present invention provides a detection system that can easily detect a state in which wireless communication between a wireless tag and a communication device is blocked or inhibited, and a state in which wireless communication is possible. The purpose is to

A first aspect includes an opening/closing member that opens and closes an opening provided in a structure, a wireless tag provided on one side of the opening surface of the opening, and a wireless tag provided on the other side of the opening surface of the opening, a communication device that performs wireless communication with the wireless tag, and when the opening is closed by the opening/closing member, wireless communication between the wireless tag and the communication device is interrupted by the opening/closing member and the opening/closing member. In the detection system, wireless communication between the wireless tag and the communication device is enabled through the opening when the structure is blocked and the opening is opened by the opening/closing member.

In the detection system of the first aspect, when the opening of the structure is closed by the opening/closing member, wireless communication between the wireless tag and the communication device is blocked by the opening/closing member and the structure, so the wireless tag is not detected. . Further, when the opening is opened by the opening/closing member, wireless communication between the wireless tag and the communication device becomes possible through the opening, and the wireless tag is detected. In other words, it is possible to easily detect a state in which wireless communication between the wireless tag and the communication device is interrupted and a state in which wireless communication is possible without separately providing a switch or the like to the wireless tag. Therefore, the opening/closing state of the opening by the opening/closing member can be easily detected by the wireless tag and the communication device.

A second aspect is the detection system of the first aspect, wherein the opening is a ventilation opening provided in an outer wall of a building, and the opening/closing member is a ventilation door provided in the ventilation opening.

In the detection system of the second aspect, when the ventilation opening is closed by the ventilation door, wireless communication between the wireless tag and the communication device is blocked by the outer wall, and the wireless tag is not detected. When the ventilation opening is opened by the ventilation door, wireless communication between the wireless tag and the communication device becomes possible through the ventilation opening, and the wireless tag is detected. In this way, the open/closed state of the ventilation opening by the ventilation door can be easily detected by the wireless tag and the communication device.

In a third aspect, the opening is an outlet provided in a container for storing luggage, the opening/closing member is an opening/closing door provided in the outlet, and the wireless tag is attached to the container. The detection system according to the first aspect, provided in the package stored in the container, and wherein the communication device is provided outside the storage body.

In the detection system of the third mode, when a package is stored in the storage body and the outlet is closed by the opening/closing door, wireless communication between the wireless tag and the communication device is blocked by the opening/closing member and the storage body. The installed wireless tag is not detected. Further, when the outlet is opened by the opening/closing door, wireless communication between the wireless tag and the communication device becomes possible through the outlet, and the wireless tag attached to the package is detected. In this way, the wireless tag and communication device can easily detect that the package is ready to be taken out from the take-out port.

A fourth aspect comprises an article to be stored in a storage section, a wireless tag provided in the storage section, and a communication device provided outside the storage section for performing wireless communication with the wireless tag. In a state where the package is stored in the storage portion, the package obstructs wireless communication between the communication device and the wireless tag, and in a state where the package is not stored in the storage portion, the A detection system that enables wireless communication between a communication device and the wireless tag.

In the detection system of the fourth aspect, when a package is stored in the storage unit, wireless communication between the wireless tag and the communication device is blocked by the package. Moreover, when no baggage is stored in the storage unit, wireless communication between the wireless tag and the communication device becomes possible. In other words, it is possible to easily detect a state in which wireless communication between the wireless tag and the communication device is blocked and a state in which wireless communication is possible without separately providing a switch or the like to the wireless tag. Therefore, it is possible to easily detect by the wireless tag and the communication device whether or not the package is stored in the storage unit.

According to the present invention, it is possible to easily detect a state in which wireless communication between a wireless tag and a communication device is blocked or impeded, and a state in which wireless communication is possible.

FIG. 2 is a block diagram of the detection system of the first embodiment, and a horizontal sectional view schematically showing a state in which the ventilation door is open and the ventilation port is open. FIG. 2 is a block diagram of the detection system of the first embodiment and a horizontal sectional view schematically showing a state in which the ventilation door is closed and the ventilation port is closed; 1 is a block diagram of a wireless tag, a communication device and a control device; FIG. FIG. 10 is a block diagram of a detection system according to a second embodiment, and a vertical cross-sectional view along the X direction schematically showing a locker in which baggage is stored; It is the side view seen from the Y direction which shows typically the block diagram of the detection system of 3rd embodiment, and the rack in which the goods were accommodated.

<First Embodiment>
A detection system according to a first embodiment of the present invention will be described. Note that the two orthogonal horizontal directions are the X direction and the Y direction, and the vertical direction orthogonal to the X direction and the Y direction is the Z direction. 1 and 2, the normal direction of the drawing is the Z direction.

[composition]
First, the configuration of the detection system of this embodiment will be described.

As shown in FIGS. 1, 2, and 3, the detection system 100 includes a wireless tag 10 and a communication device 20 that wirelessly communicates with the wireless tag 10. FIG. The communication device 20 is electrically connected to the control device 30 .

In this embodiment, the communication device 20 outputs a UHF band radio wave DA and receives a response radio wave DB (see FIG. 3) output from the wireless tag 10 . again. The wireless tag 10 of this embodiment is an electromotive type RFID tag that is activated by receiving a radio wave DA output from the communication device 20 and outputs a response radio wave DB (see FIG. 3). The wireless tag 10 of this embodiment has a function of measuring temperature.

It should be noted that the dashed fan-shaped line DA in FIGS. 1 and 2 is illustrated with an image of the radio wave DA. 3 indicates the radio wave DA output from the communication device 20, and the arrow DB indicates the response radio wave DB output from the wireless tag 10. In FIG.

As shown in FIGS. 1 and 2, the outer wall 112 of the building 110 is provided with ventilation openings 120 . A ventilation door 130 is provided in the ventilation port 120 . The ventilation door 130 is made of metal and opens inward. Reference numeral 114 denotes the inside of the building 110, that is, the interior, and reference numeral 115 denotes the exterior of the building 110, that is, the exterior. The above-described wireless tag 10 is arranged on the outdoor 115 side of the ventilation door 130 in the ventilation port 120, and the communication device 20 is installed on the indoor 114 side.

As shown in FIG. 2, when the ventilation door 130 is closed and the ventilation port 120 is closed, the radio wave DA output from the communication device 20 is blocked by the metal ventilation door 130 and the outer wall 112, and the wireless tag 10 , the communication device 20 does not detect the wireless tag 10 .

As shown in FIG. 1, when the ventilation door 130 is opened and the ventilation opening 120 is opened, the radio wave DA output from the communication device 20 reaches the wireless tag 10 through the ventilation opening 120. Therefore, the communication device 20 The wireless tag 10 is detected.

1 and 2, only one communication device 20 and one wireless tag 10 are shown. However, in reality, a wireless tag 10 is installed in each of the plurality of ventilation openings 120, and the plurality of wireless tags 10 are configured to perform wireless communication with one or a plurality of communication devices 20 ( See Figure 3).

In this embodiment, the control device 30 blocks the wireless communication between the wireless tag 10 and the communication device 20, and when the wireless tag 10 is not detected, the ventilation door 130 is closed and the ventilation port 120 is closed. I judge. Further, when wireless communication is possible between the wireless tag 10 and the communication device 20 and the wireless tag 10 is detected, the control device 30 determines that the ventilation door 130 is open and the ventilation port 120 is open. to decide.

Further, the wireless tag 10 of this embodiment has a function of measuring temperature as described above. Therefore, when the ventilation door 130 is opened to open the ventilation port 120 and ventilation is performed, the temperature of the air passing through the ventilation port 120 is measured and the measurement result is transmitted to the communication device 20 . Then, the communication device 20 transmits the received air temperature information to the control device 30 .

[Action and effect]
Next, the operation and effects of this embodiment will be described.

As described above, if the communication device 20 does not detect the wireless tag 10 , the control device 30 determines that the ventilation door 130 is closed and the ventilation port 120 is closed, and the communication device 20 detects the wireless tag 10 . When detected, it is determined that the ventilation door 130 is opened and the ventilation port 120 is in an open state.

Thus, the open/close state of the ventilation opening 120 by the ventilation door 130 can be easily detected by the wireless tag 10 and the communication device 20 .

Also, the wireless tag 10 can be used to measure the temperature of the air to be ventilated through the ventilation opening 120, and the communication device 20 can receive the temperature information.

Here, an example of control by the control device 30 using wireless communication between the wireless tag 10 and the communication device 20 will be described.

When the control device 30 determines that the ventilation door 130 is open even though it should be closed, for example, when the ventilation door 130 is open after 5:00 in the evening, a notification device (not shown) , informs that the ventilation door 130 is open and prompts the user to close the ventilation door 130. - 特許庁

When a rainfall sensor (not shown) installed outside the building 110, that is, outside the building 115 detects rainfall, the control device 30 notifies an alarm device (not shown) to close the ventilation door 130.

Also, when the ventilation opening 120 is open for ventilation, the control device 30 collects the temperature information of the air passing through the ventilation opening 120 measured by the wireless tag 10 and uses it for air conditioning control of the room 114 of the building 110. .

<Second embodiment>
A detection system according to a second embodiment of the present invention will be described. The same members as those in the first embodiment are denoted by the same reference numerals, and overlapping descriptions are omitted or simplified. The two orthogonal horizontal directions are the X direction and the Y direction, and the vertical direction orthogonal to the X direction and the Y direction is the Z direction. In FIG. 4, the normal direction of the drawing is the Y direction.

[composition]
First, the configuration of the detection system of this embodiment will be described.

As shown in FIG. 4 , the detection system 200 includes a wireless tag 10 and a communication device 20 that wirelessly communicates with the wireless tag 10 . The communication device 20 is electrically connected to the control device 30 .

A metal locker 210 as an example of a storage body has a plurality of storage chambers 220 for storing luggage 250 . A front surface of each storage room 220 is provided with an outlet 222 for loading and unloading the luggage 250 . Each outlet 222 is provided with a metal opening/closing door 230 as an example of an opening/closing member. Each storage chamber 220 is surrounded by a wall surface portion 224 made of metal except for the outlet 222 .

The wireless tag 10 is attached to each package 250 and the communication device 20 is installed outside the locker 210 .

In FIG. 4, the storage chamber 220 of the locker 210 is illustrated in three stages, upper and lower, and the opening/closing door 230 of the storage chamber 220 in the middle stage is shown in an open state. In addition, it is an example that the storage chambers 220 of the lockers 210 are arranged in three stages, and the storage chambers 220 are not limited to this.

Then, in a state in which the package 250 is stored in the storage chamber 220 of the locker 210, the opening/closing door 230 is closed, and the take-out port 222 is closed (in FIG. 4, the upper and lower storage chambers 220), the The radio wave DA is blocked by the metal opening/closing door 230 and the wall surface 224 of the storage room 220 and does not reach the wireless tag 10 attached to the package 250 . Therefore, the communication device 20 does not detect the wireless tag 10 attached to the luggage 250 stored in the storage room 220 .

In addition, in a state where the opening/closing door 230 is opened and the outlet 222 is opened (in FIG. 4, the middle storage room 220), the radio wave DA output from the communication device 20 passes through the outlet 222 and is attached to the package 250. It reaches the wireless tag 10 that has been sent. Therefore, the communication device 20 detects the wireless tag 10 attached to the luggage 250 stored in the storage room 220 .

Note that even when the opening/closing door 230 is opened and the outlet 222 is opened (in FIG. 4, the storage room 220 in the middle stage), if the luggage 250 is not stored in the storage room 220, the communication device 20 does not store the wireless tag. 10 is not detected.

In this embodiment, when the communication device 20 detects the wireless tag 10 , the control device 30 determines that the package 250 stored in the storage chamber 220 in which the wireless tag 10 is detected can be removed from the outlet 222 .

Further, the control device 30 detects the number of packages 250 that can be taken out by detecting the number of wireless tags 10 detected.

[Action and effect]
Next, the operation and effects of this embodiment will be described.

As described above, when the communication device 20 detects the wireless tag 10 , the control device 30 determines that the package 250 stored in the storage chamber 220 can be taken out from the take-out port 222 .

The wireless tag 10 and the communication device 20 can easily detect that the baggage 250 stored in the storage chamber 220 of the locker 210 is ready to be taken out from the outlet 222 in this way.

Also, by detecting the number of detected wireless tags 10, the number of packages 250 that can be taken out can be easily detected.

Here, an example of control by the control device 30 using wireless communication between the wireless tag 10 and the communication device 20 will be described.

If the control device 30 determines that the load 250 stored in the storage room 220 can be taken out from the takeout port 222 even though the door 230 is locked, the door 230 is broken. Assume that there is a risk of theft. Then, an alarm is issued by an alarm device (not shown). Therefore, even if an attempt is made to destroy the opening/closing door 230 and take away the package 250, the radio tag 10 attached to the package 250 can be detected to quickly and easily find it.

Further, by detecting the number of packages 250 stored in the storage room 220, it is possible to easily detect whether or not there are packages 250 that have been taken away. Furthermore, by tracking the wireless tag 10 after the package 250 has been taken away, there is a possibility that the package 250 can be found early.

<Third Embodiment>
A detection system according to a third embodiment of the present invention will be described. The same members as those in the first embodiment and the second embodiment are denoted by the same reference numerals, and overlapping descriptions are omitted or simplified. The two orthogonal horizontal directions are the X direction and the Y direction, and the vertical direction orthogonal to the X direction and the Y direction is the Z direction. In FIG. 5, the normal direction of the drawing is the Y direction.

[composition]
First, the configuration of the detection system of this embodiment will be described.

As shown in FIG. 5 , the detection system 300 includes a wireless tag 10 and a communication device 20 that wirelessly communicates with the wireless tag 10 . The communication device 20 is electrically connected to the control device 30 .

A metal rack 310 as an example of a storage section has a plurality of shelves 320 for storing packages 350 . The package 350 of this embodiment has an exterior portion made of a metal material. Note that the package 350 whose exterior is made of a metal material is, for example, a container made of metal or a box coated with thin aluminum.

The wireless tag 10 is provided behind the shelf 320 of the rack 310 . The communication device 20 is installed outside the rack 310 .

In FIG. 5, the shelves 320 of the rack 310 are shown in three stages, upper and lower, and the middle shelf 320 shows a state in which no load 350 is stored. It should be noted that the rack 310 having three shelves 320 above and below is an example, and is not limited to this.

Here, when the wireless tag 10 is in contact with a metal surface, the radio wave DA output from the communication device 20 has an electric field component of 0 or substantially 0 at the wireless tag 10, which hinders wireless communication. Also, when the wireless tag 10 is close to the metal surface by about 10 mm or less, the radio wave DA output from the communication device 20 is reflected by the metal surface, and the reflected wave is the response radio wave DB output from the wireless tag 10. (see FIG. 3) is jammed and canceled, and radio communication is disturbed. When the wireless tag 10 is in contact with or close to a metal surface in this manner, wireless communication is impeded.

When the package 350 is stored on the shelf 320 of the rack 310, the wireless tag 10 comes into contact with or comes close to the package 350, which is made of a metallic material. 350 is inhibited.

Therefore, when packages 350 are stored on the shelves 320 of the rack 310 (upper and lower shelves 320 in FIG. 5), wireless communication is blocked by the packages 350 with metal material exteriors, and the communication device 20 does not operate on the shelves. The wireless tag 10 provided behind 320 is not detected.

In addition, in a state where the luggage 350 is not stored on the shelf 320 (the middle shelf 320 in FIG. 5), the radio wave DA output from the communication device 20 reaches the wireless tag 10 provided at the back of the shelf 320, and the communication is performed. Device 20 detects wireless tag 10 .

In this embodiment, when the communication device 20 detects the wireless tag 10, the control device 30 determines that the shelf 320 on which the wireless tag 10 is detected does not store the package 350. FIG.

[Action and effect]
Next, the operation and effects of this embodiment will be described.

As described above, when the communication device 20 detects the wireless tag 10 , the control device 30 determines that the shelf 320 on which the wireless tag 10 is detected does not store the package 350 .

Thus, whether or not the package 350 is stored on the shelf 320 can be easily detected by the wireless tag 10 and the communication device 20 .

Here, an example of control by the control device 30 using wireless communication between the wireless tag 10 and the communication device 20 will be described.

The control device 30 uses the information of the shelf 320 where the wireless tag 10 is detected and the package 350 is not stored as data for inventory management. Then, when the stock of the package 350 becomes low, the order is automatically placed. Alternatively, a notifying device (not shown) notifies that the shelf 320 in which the packages 350 are not stored should be replenished with the packages 350 .

<Others>
It should be noted that the present invention is not limited to the above embodiments.

For example, in the first embodiment, the opening/closing of the ventilation door 130 provided at the ventilation opening 120 of the outer wall 112 of the building 110 is detected by the wireless tag 10 and the communication device 20, but the present invention is not limited to this. For example, it can be applied to detection of opening/closing of opening/closing members other than the ventilation door 130, such as entrance doors, windows, and interior doors. In addition to the hinged door system, it can also be applied to a slide-type opening/closing member. Also, the present invention can be applied to an opening/closing member that opens and closes not only in the horizontal direction but also in the vertical direction.

Also, for example, in the first embodiment, the wireless tag 10 has the function of measuring temperature, but the present invention is not limited to this. The wireless tag 10 may not have a function to measure temperature, and may measure other than temperature such as humidity, illuminance, air pressure, vibration, impact, motion, gas (CO ₂ , CO, VOC, etc.), strain, It may have a function to measure human feeling, proximity and distance, etc.

In addition, not only in the first embodiment, but also in the second and third embodiments, the wireless tag 10 has temperature, humidity, illuminance, air pressure, vibration, shock, movement, gas (CO ₂ , CO, VOC, etc.) , distortion, human presence, proximity, distance, and the like.

In short, the wireless tag 10 may have a sensor function for monitoring, detecting, and measuring the state of the object.

Further, in the above embodiment, the communication device 20 outputs the UHF band radio wave DA, but the present invention is not limited to this. The frequency band of the radio wave DA output by the communication device 20 is not limited.

In the above embodiment, the wireless tag 10 is an electromotive RFID tag that is activated by receiving the radio wave DA output from the communication device 20 and outputs a response radio wave DB, in other words, it is a passive wireless tag. However, it is not limited to this. For example, it may be an active wireless tag that is supplied with electricity by a built-in battery or the like.

Furthermore, various aspects can be implemented without departing from the gist of the present invention. A plurality of embodiments, modifications, and the like can be appropriately combined and implemented.

10 wireless tag 20 communication device 30 control device 100 detection system 110 building (an example of a structure)
112 Outer wall (an example of a structure)
120 Ventilation opening (an example of an opening)
130 ventilation door (an example of opening and closing member)
200 detection system 210 locker (an example of a structure and a container)
220 storage room (an example of a structure and a storage body)
222 outlet (an example of an opening)
230 opening/closing door (an example of an opening/closing member)
250 Baggage 300 Detection System 310 Rack (an example of a storage section)
320 shelf (an example of a storage part)
350 Luggage

Claims (5)

A ventilation door that opens and closes the indoor side of the ventilation opening provided on the outer wall of the building ,
a wireless tag provided in the ventilation opening ;
a communication device that is provided in a room of the building and performs wireless communication with the wireless tag;
a control device electrically connected to the communication device;
with
The control device is
When wireless communication between the wireless tag and the communication device is blocked by the ventilation door and the outer wall and the wireless tag is not detected, it is determined that the ventilation door is closed and the ventilation port is closed . ,
When wireless communication between the wireless tag and the communication device is enabled through the ventilation opening and the wireless tag is detected, the ventilation door is opened and the ventilation opening is determined to be in an open state.
detection system. When the control device determines that the ventilation door is open even though it should be closed, it notifies that the ventilation door is open.
The sensing system of claim 1. The control device notifies that the ventilation door is open when the ventilation door is open at a set time.
3. The sensing system of claim 2. When the rainfall sensor installed outside the building detects rainfall, the control device notifies the ventilation door to close.
The detection system according to any one of claims 1 to 3. The wireless tag has a function of measuring temperature,
When the ventilation door is opened and the ventilation opening is open, the wireless tag transmits a measurement result of measuring the temperature of the air passing through the ventilation opening to the communication device,
The communication device transmits the received measurement result to the control device,
The control device uses the measurement results to control air conditioning in the building.
The detection system according to any one of claims 1 to 4.