1. Technical Field
The present invention relates to an intrusion detecting system that detects the presence or absence of an intrusion object such as a person and an intrusion position with the use of a leakage coaxial transmission path.
2. Background Art
In the intrusion detecting device using the leakage coaxial transmission path, with the use of a transmitter leakage coaxial cable and a receiver leakage coaxial cable, a signal is transmitted from the transmitter cable, and the presence or absence of the intrusion object and the intrusion position are determined according to a change in the signal received by the receiver cable.
In a related-art wide-area intrusion detecting system using the leakage coaxial transmission path, the transmitter cable and the receiver cable are placed on or in the ground in parallel to each other in use (for example, refer to JP-A-2009-252020 (
In the related-art wide-area intrusion detecting system using the leakage coaxial transmission path, the transmitter leakage coaxial cable and the receiver leakage coaxial cable must be placed on or in the ground in parallel to each other. Also, in order to realize a monitor distance of a given specification, there is a need to ensure that an interval between those cables is at least 80 cm or larger. When the interval is 80 cm or smaller, although the installation area is reduced, a portion where the receive level is too high occurs. This leads to such an adverse effect that an output of transmit radio waves must decrease, and a maximum value of the monitor distance in a longitudinal direction of the cables is shortened. Also, in order to avoid the disturbance of radio waves such as the reflection or scatter of radio waves due to the surrounding environment, which is caused by a factor other than an intruder and induces false detection, there is a need to ensure a space of about 50 cm to several m in length outside those cables. Accordingly, in order for the intrusion monitoring device using the leakage coaxial transmission path to provide a normal detection performance, a space area (an area in which there is nothing such as a structure and a passing vehicle on a site) which is 2 m or longer, or 5 in or longer depending on the environment, in a transverse direction, is required as a space in which the leakage coaxial transmission path is placed. As a result, when the leakage coaxial transmission path is placed on an outer periphery of the existing site, there is a case in which a sufficient installation area cannot be ensured, and the leakage coaxial transmission path cannot be introduced. This is a problem to be preferably improved.
The present invention has been made to solve the above problem, and aims at reducing a space required to place the leakage coaxial transmission path so as to suppress false detection, and enlarging a range where the intrusion monitoring system is available.
According to the present invention, there is provided an intrusion detecting system in which a transmitter leakage transmission path that transmits a detection signal for detecting an intrusion and a receiver leakage transmission path that receives the detection signal leaked from the transmitter leakage transmission path are installed apart from each other within an intrusion monitor area, and an intrusion detecting device detects presence or absence of an intrusion object in the intrusion monitor area on the basis of a change in the detection signal received by the receiver leakage transmission path,
wherein at least one of the transmitter leakage transmission path and the receiver leakage transmission path is a surface wave leakage coaxial transmission path.
Also, according to the present invention, there is provided an intrusion detecting system in which a transmitter leakage transmission path that transmits a detection signal for detecting an intrusion and a receiver leakage transmission path that receives the detection signal leaked from the transmitter leakage transmission path are installed apart from each other within an intrusion monitor area, and an intrusion detecting device detects presence or absence of an intrusion object in the intrusion monitor area on the basis of a change in the detection signal received by the receiver leakage transmission path,
wherein at least one of the transmitter leakage transmission path and the receiver leakage transmission path is a surface wave leakage coaxial transmission path,
wherein one of the transmitter leakage transmission path and the receiver leakage transmission path extends at a lower side of a plurality of windows arranged laterally in a building over the plurality of windows,
wherein the other of the transmitter leakage transmission path and the receiver leakage transmission path extends at an upper side of the plurality of windows over the plurality of windows, and
wherein the intrusion detecting device detects from which of the plurality of windows the intrusion object intrudes on the basis of the change in the detection signal, which is received by the receive leakage transmission path.
Also, according to the present invention, there is provided an intrusion detecting system in which a transmitter leakage transmission path that transmits a detection signal for detecting an intrusion and a receiver leakage transmission path that receives the detection signal leaked from the transmitter leakage transmission path are installed apart from each other within an intrusion monitor area, and an intrusion detecting device detects presence or absence of an intrusion object in the intrusion monitor area on the basis of a change in the detection signal received by the receiver leakage transmission path,
wherein at least one of the transmitter leakage transmission path and the receiver leakage transmission path is a surface wave leakage coaxial transmission path,
wherein one of the transmitter leakage transmission path and the receiver leakage transmission path extends at a left side of a plurality of windows arranged longitudinally in a building over the plurality of windows,
wherein the other of the transmitter leakage transmission path and the receiver leakage transmission path extends at a right side of the plurality of windows over the plurality of windows, and
wherein the intrusion detecting device detects from which of the plurality of windows the intrusion object intrudes on the basis of the change in the detection signal, which is received by the receive leakage transmission path.
Also, according to the present invention, there is provided an intrusion detecting system in which a transmitter leakage transmission path that transmits a detection signal for detecting an intrusion and a receiver leakage transmission path that receives the detection signal leaked from the transmitter leakage transmission path are installed apart from each other within an intrusion monitor area, and an intrusion detecting device detects presence or absence of an intrusion object in the intrusion monitor area on the basis of a change in the detection signal received by the receiver leakage transmission path,
wherein one of the transmitter leakage transmission path and the receiver leakage transmission path extends at a left side of a plurality of windows arranged longitudinally in a building over the plurality of windows,
wherein the other of the transmitter leakage transmission path and the receiver leakage transmission path extends at a right side of the plurality of windows over the plurality of windows,
wherein a height of a lower window of the plurality of windows is equivalent to a height of the intrusion object,
wherein both of the transmitter leakage transmission path and the receiver leakage transmission path at both of right and left sides of the lower window are surface wave leakage coaxial transmission paths,
wherein both of the transmitter leakage transmission path and the receiver leakage transmission path at both of right and left sides of a window upper than the lower window are radiation leakage coaxial transmission paths, and
wherein the intrusion detecting device detects from which of the plurality of windows the intrusion object intrudes on the basis of the change in the detection signal, which is received by the receive leakage transmission path.
Also, according to the present invention, there is provided an intrusion detecting system in which a transmitter leakage transmission path that transmits a detection signal for detecting an intrusion and a receiver leakage transmission path that receives the detection signal leaked from the transmitter leakage transmission path are installed apart from each other within an intrusion monitor area, and an intrusion detecting device detects presence or absence of an intrusion object in the intrusion monitor area on the basis of a change in the detection signal received by the receiver leakage transmission path,
wherein both of the transmitter leakage transmission path and the receiver leakage transmission path are surface wave leakage coaxial transmission paths,
wherein one of the transmitter leakage transmission path and the receiver leakage transmission path extends at one side of a passage inlet,
wherein the other of the transmitter leakage transmission path and the receiver leakage transmission path extends at the other side of the passage path with respect to the inlet, and
wherein the intrusion detecting device detects that the intrusion object intrudes from the passage inlet on the basis of the change in the detection signal, which is received by the receiver leakage transmission path.
Also, according to the present invention, there is provided an intrusion detecting system in which a transmitter leakage transmission path that transmits a detection signal for detecting an intrusion and a receiver leakage transmission path that receives the detection signal leaked from the transmitter leakage transmission path are installed apart from each other within an intrusion monitor area, and an intrusion detecting device detects presence or absence of an intrusion object in the intrusion monitor area on the basis of a change in the detection signal received by the receiver leakage transmission path,
wherein one of the transmitter leakage transmission path and the receiver leakage transmission path extends at one side of a passage inlet,
wherein the other of the transmitter leakage transmission path and the receiver leakage transmission path extends at the other side of the passage path with respect to the inlet,
wherein in an area where a height of the leakage transmission paths at both sides of the passage inlet is equal to a height of the intrusion object, both of the leakage transmission paths at both sides thereof are surface wave leakage coaxial transmission paths,
wherein in an area where a height of the leakage transmission paths at both sides of the passage inlet is equivalent to or higher than the height of the intrusion object, both of the leakage transmission paths at both sides are radiation leakage coaxial transmission paths, and
wherein the intrusion detecting device detects that the intrusion object intrudes from the passage inlet on the basis of the change in the detection signal, which is received by the receive leakage transmission path.
Also, according to the present invention, there is provided an intrusion detecting system in which a transmitter leakage transmission path that transmits a detection signal for detecting an intrusion and a receiver leakage transmission path that receives the detection signal leaked from the transmitter leakage transmission path are installed apart from each other within an intrusion monitor area, and an intrusion detecting device detects presence or absence of an intrusion object in the intrusion monitor area on the basis of a change in the detection signal received by the receiver leakage transmission path,
wherein the transmitter leakage transmission path and the receiver leakage transmission path are placed at an intrusion detection region side of a wall close to the wall, and
wherein both of the transmitter leakage transmission path and the receiver leakage transmission path are surface wave leakage coaxial transmission paths.
Also, according to the present invention, there is provided an intrusion detecting system in which a transmitter leakage transmission path that transmits a detection signal for detecting an intrusion and a receiver leakage transmission path that receives the detection signal leaked from the transmitter leakage transmission path are installed apart from each other within an intrusion monitor area, and an intrusion detecting device detects presence or absence of an intrusion object in the intrusion monitor area on the basis of a change in the detection signal received by the receiver leakage transmission path,
wherein each of the transmitter leakage transmission path and the receiver leakage transmission path is configured by coupling a plurality of the leakage coaxial transmission paths,
wherein in the transmitter leakage transmission path and the receiver leakage transmission path each configured by coupling the plurality of the leakage coaxial transmission paths, the leakage transmission paths adjacent to the passage are surface wave leakage coaxial transmission paths, and
wherein the leakage transmission paths other than the leakage transmission paths adjacent to the passage are radiation leakage coaxial transmission paths.
According to the present invention, in the intrusion detecting system in which a transmitter leakage transmission path that transmits a detection signal for detecting an intrusion and a receiver leakage transmission path that receives the detection signal leaked from the transmitter leakage transmission path are installed apart from each other within an intrusion monitor area, and an intrusion detecting device detects presence or absence of an intrusion object in the intrusion monitor area on the basis of a change in the detection signal received by the receiver leakage transmission path, at least one of the transmitter leakage transmission path and the receiver leakage transmission path is a surface wave leakage coaxial transmission path. Therefore, even if a space required for placing the leakage coaxial transmission path is reduced, false detection can be suppressed, and the leakage coaxial transmission path can be placed in an area where the leakage coaxial transmission path could not be placed up to now.
Also, according to the present invention, in the intrusion detecting system in which a transmitter leakage transmission path that transmits a detection signal for detecting an intrusion and a receiver leakage transmission path that receives the detection signal leaked from the transmitter leakage transmission path are installed apart from each other within an intrusion monitor area, and an intrusion detecting device detects presence or absence of an intrusion object in the intrusion monitor area on the basis of a change in the detection signal received by the receiver leakage transmission path, at least one of the transmitter leakage transmission path and the receiver leakage transmission path is a surface wave leakage coaxial transmission path, one of the transmitter leakage transmission path and the receiver leakage transmission path extends at a lower side of a plurality of windows arranged laterally in a building over the plurality of windows, the other of the transmitter leakage transmission path and the receiver leakage transmission path extends at an upper side of the plurality of windows over the plurality of windows, and the intrusion detecting device detects from which of the plurality of windows the intrusion object intrudes on the basis of the change in the detection signal, which is received by the receive leakage transmission path. Therefore, even if a space required for placing the leakage coaxial transmission path is reduced, false detection can he suppressed, and the leakage coaxial transmission path can be placed in an area where the leakage coaxial transmission path could not be placed up to now.
Also, according to the present invention, in the intrusion detecting system in which a transmitter leakage transmission path that transmits a detection signal for detecting an intrusion and a receiver leakage transmission path that receives the detection signal leaked from the transmitter leakage transmission path are installed apart from each other within an intrusion monitor area, and an intrusion detecting device detects presence or absence of an intrusion object in the intrusion monitor area on the basis of a change in the detection signal received by the receiver leakage transmission path, at least one of the transmitter leakage transmission path and the receiver leakage transmission path is a surface wave leakage coaxial transmission path, one of the transmitter leakage transmission path and the receiver leakage transmission path extends at a left side of a plurality of windows arranged longitudinally in a building over the plurality of windows, the other of the transmitter leakage transmission path and the receiver leakage transmission path extends at a right side of the plurality of windows over the plurality of windows, and the intrusion detecting device detects from which of the plurality of windows the intrusion object intrudes on the basis of the change in the detection signal, which is received by the receive leakage transmission path. Therefore, even if a space required for placing the leakage coaxial transmission path is reduced, false detection can be suppressed, and the leakage coaxial transmission path can be placed in an area where the leakage coaxial transmission path could not be placed up to now
Also, according to the present invention, in the intrusion detecting system in which a transmitter leakage transmission path that transmits a detection signal for detecting an intrusion and a receiver leakage transmission path that receives the detection signal leaked from the transmitter leakage transmission path are installed apart from each other within an intrusion monitor area, and an intrusion detecting device detects presence or absence of an intrusion object in the intrusion monitor area on the basis of a change in the detection signal received by the receiver leakage transmission path, one of the transmitter leakage transmission path and the receiver leakage transmission path extends at a left side of a plurality of windows arranged longitudinally in a building over the plurality of windows, the other of the transmitter leakage transmission path and the receiver leakage transmission path extends at a right side of the plurality of windows over the plurality of windows, a height of a lower window of the plurality of windows is equivalent to a height of the intrusion object, both of the transmitter leakage transmission path and the receiver leakage transmission path at both of right and left sides of the lower window are surface wave leakage coaxial transmission paths, both of the transmitter leakage transmission path and the receiver leakage transmission path at both of right and left sides of a window upper than the lower window are radiation leakage coaxial transmission paths, and the intrusion detecting device detects from which of the plurality of windows the intrusion object intrudes on the basis of the change in the detection signal, which is received by the receive leakage transmission path. Therefore, even if a space required for placing the leakage coaxial transmission path is reduced, false detection can be suppressed, and the leakage coaxial transmission path can be placed in an area where the leakage coaxial transmission path could not be placed up to now.
Also, according to the present invention, in the intrusion detecting system in which a transmitter leakage transmission path that transmits a detection signal for detecting an intrusion and a receiver leakage transmission path that receives the detection signal leaked from the transmitter leakage transmission path are installed apart from each other within an intrusion monitor area, and an intrusion detecting device detects presence or absence of an intrusion object in the intrusion monitor area on the basis of a change in the detection signal received by the receiver leakage transmission path, both of the transmitter leakage transmission path and the receiver leakage transmission path are surface wave leakage coaxial transmission paths, one of the transmitter leakage transmission path and the receiver leakage transmission path extends at one side of a passage inlet, the other of the transmitter leakage transmission path and the receiver leakage transmission path extends at the other side of the passage path with respect to the inlet, and the intrusion detecting device detects that the intrusion object intrudes from the passage inlet on the basis of the change in the detection signal, which is received by the receiver leakage transmission path. Therefore, even if a space required for placing the leakage coaxial transmission path is reduced, false detection can be suppressed, and the leakage coaxial transmission path can be placed in an area where the leakage coaxial transmission path could not be placed up to now.
Also, according to the present invention, in the intrusion detecting system in which a transmitter leakage transmission path that transmits a detection signal for detecting an intrusion and a receiver leakage transmission path that receives the detection signal leaked from the transmitter leakage transmission path are installed apart from each other within an intrusion monitor area, and an intrusion detecting device detects presence or absence of an intrusion object in the intrusion monitor area on the basis of a change in the detection signal received by the receiver leakage transmission path, one of the transmitter leakage transmission path and the receiver leakage transmission path extends at one side of a passage inlet, the other of the transmitter leakage transmission path and the receiver leakage transmission path extends at the other side of the passage path with respect to the inlet, in an area where a height of the leakage transmission paths at both sides of the passage inlet is equal to a height of the intrusion object, both of the leakage transmission paths at both sides thereof are surface wave leakage coaxial transmission paths, in an area where a height of the leakage transmission paths at both sides of the passage inlet is equivalent to or higher than the height of the intrusion object, both of the leakage transmission paths at both sides are radiation leakage coaxial transmission paths, and the intrusion detecting device detects that the intrusion object intrudes from the passage inlet on the basis of the change in the detection signal, which is received by the receive leakage transmission path. Therefore, even if a space required for placing the leakage coaxial transmission path is reduced, false detection can be suppressed, and the leakage coaxial transmission path can be placed in an area where the leakage coaxial transmission path could not be placed up to now.
Also, according to the present invention, in the intrusion detecting system in which a transmitter leakage transmission path that transmits a detection signal for detecting an intrusion and a receiver leakage transmission path that receives the detection signal leaked from the transmitter leakage transmission path are installed apart from each other within an intrusion monitor area, and an intrusion detecting device detects presence or absence of an intrusion object in the intrusion monitor area on the basis of a change in the detection signal received by the receiver leakage transmission path, the transmitter leakage transmission path and the receiver leakage transmission path are placed at an intrusion detection region side of a wall close to the wall, and both of the transmitter leakage transmission path and the receiver leakage transmission path are surface wave leakage coaxial transmission paths. Therefore, even if a space required for placing the leakage coaxial transmission path is reduced, false detection can be suppressed, and the leakage coaxial transmission path can be placed in an area where the leakage coaxial transmission path could not be placed up to now.
Also, according to the present invention, in the intrusion detecting system in which a transmitter leakage transmission path that transmits a detection signal for detecting an intrusion and a receiver leakage transmission path that receives the detection signal leaked from the transmitter leakage transmission path are installed apart from each other within an intrusion monitor area, and an intrusion detecting device detects presence or absence of an intrusion object in the intrusion monitor area on the basis of a change in the detection signal received by the receiver leakage transmission path, each of the transmitter leakage transmission path and the receiver leakage transmission path is configured by coupling a plurality of the leakage coaxial transmission paths, in the transmitter leakage transmission path and the receiver leakage transmission path each configured by coupling the plurality of the leakage coaxial transmission paths, the leakage transmission paths adjacent to the passage are surface wave leakage coaxial transmission paths, and the leakage transmission paths other than the leakage transmission paths adjacent to the passage are radiation leakage coaxial transmission paths. Therefore, even if a space required for placing the leakage coaxial transmission path is reduced, false detection can be suppressed, and the leakage coaxial transmission path can be placed in an area where the leakage coaxial transmission path could not be placed up to now.
The foregoing and other object, features, aspects, and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.
Hereinafter, a first embodiment of the present invention will be described with reference to
First, the operational principle according to the first embodiment of the present invention will be described with reference to
The transmitter leakage transmission path 5 and the receiver leakage transmission path 6 are formed of, for example, commercially available leakage coaxial cables. The leakage portions 5TH and 6TH of the transmitter leakage transmission path 5 and the receiver leakage transmission path 6 are penetration slots that penetrate envelops of the cables at intervals of several meters in the commercially available leakage coaxial cables.
Now, an example of a detection concept of the intrusion positions will be exemplified.
The commercially available leakage coaxial cables are used as the transmitter leakage transmission path 5 and the receiver leakage transmission path 6. The transmitter leakage transmission path 5 and the receiver leakage transmission path 6 are placed at intervals of several meters. For example, one transmit pulse is transmitted from the transmitter circuit 12 as illustrated in
Likewise, when one transmit pulse is transmitted from the transmitter circuit 12, the leakage radio wave from a second hole of the transmitter leakage transmission path 5 is received through a second hole of the receiver leakage transmission path 6, and arrives at the intrusion detector 13, which is the receiver circuit, as a receive signal. An arrival time of the leakage radio wave is ΔT2 after the transmit signal is transmitted.
Likewise, the arrival time of the receive signal through a third hole is ΔT3 after the transmit signal is transmitted. The arrival times ΔT1, ΔT2, ΔT3 . . . , that is, the arrival time (also called “delay time”) ΔT is easily obtained through computation if a length of the signal transmission path is found since a propagation velocity of the signal is 300,000 km/sec.
Accordingly, in the intrusion detector 13, if data of the arrival time (delay time) ΔT computed according to a system configuration in advance is saved, it is possible to discriminate which hole (penetration slot) the receive signal has passed through by matching the received real receive signal to the saved data.
Also, when a person intrudes into a region where the leakage radio wave exists, the leakage radio wave is changed, for example, a shape thereof is changed, due to the intruder.
Accordingly, when a change in the signal received by the intrusion detector 13 is detected, it is possible to detect and announce into which position the leakage radio wave intrudes along the transmitter leakage transmission path 5 and the receiver leakage transmission path 6.
Since the signal speed is extremely high, from a relationship with the detecting operation speed of the receiver circuit, in fact, a single pulse is not transmitted about once per several seconds as the transmit signal. If a spectrum diffusion signal called “PN code” as exemplified in
When the PN code is used in the intrusion detecting system exemplified in
In the intrusion detecting system having the transmitter leakage transmission path 5 and the receiver leakage transmission path 6 that is disposed in parallel to the transmitter leakage transmission path 5, and determining that there is an intruder if the radio wave received by the receiver leakage transmission path 6 changes, in the experiment and research by the present inventors, it is found that the leakage transmission paths 5 and 6 are placed in the length of about 1500 to 3000 m, the presence or absence of intrusion of a human in between the leakage transmission paths 5 and 6, and the intrusion position can be detected over a long distance of about 1500 to 3000 m. The intrusion detector 13 is configured by a product form of a sensor card in which an intrusion detecting function is mounted on a substrate into a module. The intrusion detector 13 can address a distance to be detected, for example, 1000 m, 1500 m, and 2000 m by increasing the number of sensor cards.
Referring to
Also, the intrusion detection unit 13 includes a setting unit 17. On the basis of setting, the setting unit 17 stops and starts the functions of the respective reference spectrum diffusion signal generation units 9-1 to 9-150, individually. Also, the setting unit 17 stops and starts the functions of the respective correlation units 10-1 to 10-150, individually. Accordingly, with the setting of the setting unit 17, an intrusion detection precision, and an intrusion detection distance (a detectable distance in a direction of extending the leakage transmission path) can be arbitrarily selectively set.
Also, the intrusion detecting device 16 also called “obstacle detecting device” is roughly made up of the transmitter circuit 12 and the intrusion detector 13.
Subsequently, the operation in
A reference diffusion code of the delay time at measurement distance 10 m (±5 m) intervals of the intruder by the plurality of reference spectrum diffusion signal generation units 9-1 to 9-150 is generated from the reference clock generation unit 1. The reference spectrum diffusion signal diffused and modulated by the reference diffusion code is output. The correlations between the transmission spectrum diffusion signals received by the receiver leakage transmission path 6 and the reference spectrum diffusion signals are taken by 150 correlation means 10-1 to 10-150 corresponding to the reference spectrum diffusion signal generation units 9-1 to 9-150. When the phase matches each other, a correlation signal is output. When the variation of the signal level of the correlation signal to each specific delay time set in the reference spectrum diffusion signal generation units 9-1 to 9-150 is a set value or higher, the detection unit 11 detects that the intruder exists in an area of 10 m (±5 m) intervals within a site such as factories or rails.
In the above first embodiment, with mounting of the 150 reference spectrum diffusion signal generation units 9-1 to 9-150 setting the delay times corresponding to the measurement distance 10 m (±5 m) intervals, and mounting of the 150 correlation units 10-1 to 10-150 corresponding to those generation units, the detection distance can be set to 150 (the number of correlations)×10 m (±5 m) (detection distance) 1500 m while the detection precision ±5 m is maintained by one intrusion detecting device. Thus, the economically excellent wide-range intrusion detecting device 16 can be obtained.
Hereinafter, an example of the intrusion detecting system according to the first embodiment of the present invention illustrated in
In
In
On the contrary, in
Hereinafter, a second embodiment will be described with reference to
The leakage coaxial cable which is a representative case of the leakage transmission path is of two types of the radiation type and the surface wave type. In a standard configuration of the intrusion detecting system using the leakage coaxial transmission path, the leakage coaxial cable of the radiation type is used. In the leakage coaxial cables of the radiation type and the surface wave type, the radio wave radiation characteristics in a short-side direction of the cable are different from each other. The radio wave intensity in the case of using the radiation type is inversely proportional to a distance from the leakage coaxial cable. The radio wave intensity of the surface wave type is exponentially reduced with respect to the distance from the leakage coaxial cable. Accordingly, a detection area in the case of using the leakage coaxial cable of the surface wave type is smaller in all of the detection area height and the detection area width including the detection area width outside the leakage coaxial cable than the detection area height and the detection area width of the radiation leakage coaxial cable. That is, the detection area in the case of using the surface wave leakage coaxial cable is smaller than the detection area in the case of using the radiation leakage coaxial cable.
The invention made in a process of reaching the present invention in
As illustrated in
On the contrary, in the second embodiment of the present invention in
In the second embodiment of the present invention in
Hereinafter, a third embodiment of the present invention will be described with reference to
As illustrated in
Depending on the building, when the transmitter leakage transmission path 51 and the receiver leakage transmission path 61 are disposed outside the building 23 as illustrated in
Hereinafter, a fourth embodiment of the present invention will be described with reference to
As exemplified in
wherein at least one of the transmitter leakage transmission path 51 and the receiver leakage transmission path 61 is a surface wave leakage coaxial transmission path,
wherein one 51 of the transmitter leakage transmission path 51 and the receiver leakage transmission path 61 extends at a left side of a plurality of windows 181, 182, and 183 arranged longitudinally in a building 23 over the plurality of windows 181, 182, and 183,
wherein the other 61 of the transmitter leakage transmission path 51 and the receiver leakage transmission path 61 extends at a right side of the plurality of windows 181, 182, and 183 over the plurality of windows 181, 182, and 183, and
wherein the intrusion detecting device 16 detects from which of the plurality of windows 181, 182, and 183 the intrusion object intrudes on the basis of the change in the detection signal, which is received by the receiver leakage transmission path 61. Both of the transmitter leakage transmission path 51 and the receiver leakage transmission path 61 are disposed outside the building 23, which obtains the same advantages as those described above in
Hereinafter, a fifth embodiment of the present invention will be described with reference to
As illustrated in
Hereinafter, a sixth embodiment of the present invention will be described with reference to
As illustrated in
Also, both of the transmitter leakage transmission path 5, 51 and the receiver leakage transmission path 6, 61 are disposed outside the building 23.
Since the surface wave leakage coaxial transmission path such as the surface wave leakage coaxial cable is more expensive than the radiation leakage coaxial transmission path such as the radiation leakage coaxial cable, when the height of the lower window 181 is equivalent to the height of the intrusion object such as the person 26 as in this embodiment, both of the transmitter leakage transmission path 51 and the receiver leakage transmission path 61 at both of right and left sides of the lower window 181 are the surface wave leakage coaxial transmission paths. Also, both of the transmitter leakage transmission path 5 and the receiver leakage transmission path 6 at both of right and left sides of the windows 182 and 183 upper than the lower window 181 are the radiation leakage coaxial transmission paths. In this case, the intrusion detecting system that does not falsely detect the person walking on the passage 25 can be configured inexpensively.
The cross section of the surface wave leakage coaxial cable is exemplified by
Hereinafter, a seventh embodiment of the present invention will be described with reference to
As illustrated in
Hereinafter, an eighth embodiment of the present invention will be described with reference to
As illustrated in
Also, both of the transmitter leakage transmission path 51 and the receiver leakage transmission path 61 are disposed outside a wall of the passage inlet 28.
In order to detect that the intrusion object intrudes from the passage inlet 28, for example, as exemplified in
Also, as illustrated in
On the contrary, in this embodiment illustrated in
Hereinafter, a ninth embodiment of the present invention will be described with reference to
As illustrated in
Hereinafter, a tenth embodiment of the present invention will be described with reference to
As illustrated in
Also, both of the surface wave leakage coaxial transmission paths 51, 61 and the radiation leakage coaxial transmission paths 5, 6 are arranged outside buildings at both sides of the passage input inlet 28 or outside the walls of the rooms 231 and 232.
Accordingly, this embodiment has the same advantages and also has the effect from the viewpoints of the same costs as those in
Hereinafter, an eleventh embodiment of the present invention will be described with reference to
In the eleventh embodiment, as exemplified by
Hereinafter, a twelfth embodiment of the present invention will be described with reference to
In the twelfth embodiment, as exemplified in
Also, a relative installation positional relationship between the transmitter leakage transmission path 51 and the receiver leakage transmission path 61 are a relationship in which the transmitter leakage transmission path 51 and the receiver leakage transmission path 61 are disposed in parallel to a horizontal direction along the fence 29.
When the relative installation positional relationship between the transmitter leakage transmission path and the receiver leakage transmission path are a relationship in which the transmitter leakage transmission path and the receiver leakage transmission path are disposed in parallel to a horizontal direction along the wall 29, as exemplified in
Accordingly, when the passage 31 is adjacent to the wall 29 at a side opposite to the intrusion detection region of the wall 29, there is a possibility that a person walking at the side of a vehicle 32 on the passage 31 enters the detection area 24, and false detection is conducted. The vehicle 32 may be falsely detected.
On the contrary, in this embodiment illustrated in
When a system is applied in which two cables of the transmitter leakage coaxial cable and the receiver leakage coaxial cable are aligned on the ground in a horizontal direction, which is a related-art standand installation method using the radiation leakage coaxial cables, an interval between the transmission leakage coaxial cable and the receiver leakage coaxial cable needs to be 80 cm or larger. Also, in order to avoid disturbance of the transmit and receive signal waves due to an object other than the intrusion object, it is desirable to make the leakage coaxial cables apart from a fixed peripheral structure by 50 cm or longer, and from a traveling vehicle by 5 m or longer. Therefore, a space 2 m to several m in width is required in the installation of the radiation leakage coaxial cable. In this case, the height of the detection area is about 2 m.
When there is applied the system in which two cables of the transmitter leakage coaxial cable and the receiver leakage coaxial cable are aligned on the ground in a horizontal direction, which is a related-art standard installation method using the surface wave leakage coaxial cables, an interval between the transmitter leakage coaxial cable and the receiver leakage coaxial cable is substantially the same as that in the case of the radiation type. However, because an arrival distance of the radio wave radiated toward outside of those cases is shorter, a space required for installation of the cable is about 1 m to 1.5 m in width. In the case of the surface wave type, because the arrival distance of the radio wave radiated in the vertical direction is also shorter, the height of the detection area is less than half that in the case of the radiation type. Thus, the detection performance for the intrusion object in the height direction is deteriorated. However, since the person walking on the ground is normally to be detected, the deterioration of the detection performance for the intrusion object in the height direction is not substantially remarkably problematic from the viewpoint of intrusion detection.
Hereinafter, a thirteenth embodiment of the present invention will be described with reference to
In the thirteenth embodiment, as exemplified in
When the relative installation positional relationship between the transmitter leakage transmission path and the receiver leakage transmission path is a relationship in which the transmitter leakage transmission path and the receiver leakage transmission path are disposed in parallel perpendicularly along the wall 29, as illustrated in
That is, as contrastively illustrated in
Also, that the detection performance of the intrusion detecting system is not affected by the object at the position apart from the leakage coaxial cable means that an interval from the existing structure can be narrowed as an advantage from the viewpoint of the leakage coaxial cable installation.
Hereinafter, a fourteenth embodiment of the present invention will be described with reference to
In the fourteenth embodiment, as exemplified in
According to this embodiment, the lower coaxial leakage transmission path 61 is prevented from being damaged when the intrusion object goes across the leakage transmission paths. Also, the intruder can be detected even if the intruder digs the ground, and passes through the wall 29 from underneath. Also, because one coaxial leakage transmission path 51 is exposed to the ground surface, a coercive pressure can be suppressed. Further, when the lower leakage transmission path is the radiation leakage coaxial transmission path 6, the detection area in the ground direction can be expanded, and walk-through from a deeper position can be detected.
Hereinafter, a fifteenth embodiment of the present invention will be described with reference to
In the fifteenth embodiment, as illustrated in
wherein each of the transmitter leakage transmission path and the receiver leakage transmission path is configured by coupling a plurality of the leakage coaxial transmission paths 5, 51, 52, 6, 61, and 62 in a longitudinal direction (extending direction) thereof,
wherein in the transmitter leakage transmission path and the receiver leakage transmission path each configured by coupling the plurality of the leakage coaxial transmission paths 5, 51, 52, 6, 61, and 62, the leakage transmission paths 51 and 61 adjacent to the passages 311 and 312 are surface wave leakage coaxial transmission paths, and
wherein the leakage transmission paths other than the leakage transmission paths 51 and 61 adjacent to the passages 311 and 312 are radiation leakage coaxial transmission paths 5, 52, and 62.
According to this embodiment, in the relatively large-scaled intrusion detecting system, in the region adjacent to the passages 311 and 312, the surface wave leakage coaxial transmission path is placed to prevent false detection. In the region not adjacent to the passages 311 and 312, the radiation leakage coaxial transmission path is placed, thereby realizing a system that can prevent false detection with an inexpensive system configuration.
Hereinafter, a sixteenth embodiment of the present invention will be described with reference to
In the sixteenth embodiment, when no passage 312 in
In
Various modifications and alterations of this invention will be apparent to those skilled in the art without departing from the scope and spirit of this invention, and it should be understood that this is not limited to the illustrative embodiments set forth herein.
Number | Date | Country | Kind |
---|---|---|---|
2010-271377 | Dec 2010 | JP | national |