CN106297122B - Security protection wall and detector - Google Patents
Security protection wall and detector Download PDFInfo
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- CN106297122B CN106297122B CN201510363637.1A CN201510363637A CN106297122B CN 106297122 B CN106297122 B CN 106297122B CN 201510363637 A CN201510363637 A CN 201510363637A CN 106297122 B CN106297122 B CN 106297122B
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- 230000004888 barrier function Effects 0.000 claims description 6
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- 230000007123 defense Effects 0.000 description 3
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
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Abstract
The embodiment of the invention discloses a kind of security protection walls, and including the multiple detector groups being arranged in security protection region, the wireless signal transmitting-receiving carried out between the detector in each detector group forms wireless signal radiation area.Multiple wireless signal radiation areas overlap each other, and continuous and seamless microwave array is formed in security protection region.When there is invader to swarm into the security protection region, it will lead to the wireless signal disturbance of the microwave array, the monitoring to security protection region invader realized according to signal disturbance.Pass through testing result of the multiple-input multiple-output acquisition of a large amount of detectors after compound to the wireless signal that the multichannel of same position is relatively independent, i.e., the testing result of multiple detectors is mutually verified, due to being not only the "AND" of upper layer processing result and the simple superposition of "or", but processing and operation are carried out in testing result of the bottom to detector, influence of the disturbing factor to testing result is more effectively filtered out, the accuracy rate of testing result is improved.
Description
Technical Field
The invention relates to the technical field of security protection, in particular to a safety protection wall and a detector.
Background
The security protection system is a protection system for preventing the boundary of a certain area or alarming when the boundary is invaded by foreign matters. Safety protection systems have evolved from the original purely physical precautions (e.g., fences, enclosures) to the current combination of physical, technical, and civil defense security systems.
At present, the common technical protection schemes mainly include: infrared correlation intrusion detection, leakage cable intrusion detection, vibration optical cable intrusion detection and the like. The infrared correlation intrusion detection mainly utilizes invisible light beams (infrared rays) to form a warning line between a transmitter and a receiver, and adopts a shielding alarm mode to form a single-beam or multi-beam netted defense area; the intrusion detection of the vibration optical cable is to alarm by sensing the surrounding tiny vibration and pressure change, and the formed defense area is a nearby area (easy to cross) along the direction of the vibration optical cable.
The protection zone of the existing security system has blind spots, is easy to be crossed, has lower safety, is easy to be influenced by external environment (such as rain and snow weather, animals and plants and the like) to cause false alarm, and has higher requirement on the installation environment.
Disclosure of Invention
The embodiment of the invention provides a safety protection wall and a detector, which are used for solving the problems in the prior art.
In order to solve the technical problem, the embodiment of the invention discloses the following technical scheme:
in a first aspect, the present invention provides a safety protection wall, comprising:
the system comprises a plurality of detector groups arranged in a safety protection area, wherein the detectors in the same detector group receive and transmit wireless signals to form a wireless signal radiation area;
a plurality of wireless signal radiation areas that a plurality of detector groups constitute overlap each other safety protection area forms continuous seamless microwave array, the safety protection wall passes through the microwave array realizes the monitoring of safety protection area invader.
Optionally, the safety protection wall monitors intrusions in a safety protection area through the microwave array, and specifically includes:
and the safety protection wall determines the signal disturbance of the microwave array according to the received signals of the detectors and determines the invader according to the signal disturbance.
Optionally, adjacent probe groups in the plurality of probe groups respectively occupy different wireless channels for wireless signal transceiving.
Optionally, a traffic channel is set in the wireless channel, and is used for transmitting voice, video, short message and/or positioning information.
Optionally, the method further comprises:
the vibration sensor is used for acquiring the vibration amplitude of the safety protection area so that the monitoring background can determine an invader invading the safety protection area by combining the received signals of the detectors and the vibration amplitude;
and/or sonar equipment for assisting in monitoring the invaders in the safety protection area through sonar;
and/or, the infrared equipment is used for detecting the invader in the safety protection area in an auxiliary way through an infrared signal;
the vibration sensor, the sonar equipment and/or the infrared equipment are arranged with each detector in the detector group in a scattered mode or are integrated with the detectors.
Optionally, the plurality of detector groups are correspondingly and dispersedly arranged in the safety protection area, a plurality of wireless signal radiation areas formed by the plurality of detector groups are overlapped with each other, and a continuous seamless microwave array is formed in the safety protection area;
or,
all detectors of the safety protection area are arranged in a cable, the detectors in each group are distributed at intervals, a plurality of wireless signal radiation areas formed by a plurality of detector groups in the cable are mutually overlapped, and a continuous seamless microwave array is formed in the safety protection area;
or,
one of the detectors in each detector group is distributed in a first cable, the other detectors in the detector group are arranged in a second cable, and a plurality of detector groups are overlapped with each other in a plurality of wireless signal radiation areas formed between the first cable and the second cable to form a continuous seamless microwave array in the safety protection area;
or,
each detector group comprises three detectors, the three detectors are respectively arranged in three cables, a plurality of wireless signal radiation areas formed by the detector groups in the three cables are mutually overlapped, and a continuous seamless microwave array is formed in the safety protection area.
Optionally, each of the detector groups includes a transmitting detector for transmitting a wireless signal and at least one receiving detector for receiving a wireless signal, or; each detector in the detector group is a transceiving detector which mutually transceives wireless signals.
In a second aspect, the present invention provides a detector, which has a signal transceiving function and is disposed in a safety protection area;
the detector and other detectors form a detector group, wireless signal receiving and transmitting are carried out to form a wireless signal radiation area, the wireless signal radiation area is overlapped with the wireless signal radiation area formed by other detector groups, and a continuous seamless microwave array is formed in the safety protection area.
Optionally, the detector is used as a transmitting detector for transmitting wireless signals and at least one receiving detector for receiving wireless signals to form a detector group, and the detector group receives and transmits signals to form a wireless signal radiation area, or;
the detector is used as a receiving detector for receiving wireless signals, and forms a detector group with a detector used as a transmitting detector, and the wireless signal radiation area is formed by receiving and transmitting signals.
Optionally, the detector is a transceiver detector for transmitting wireless signals and receiving wireless signals at the same time, and forms a detector group with other detectors, and the detector and other detectors transmit and receive signals to form a wireless signal radiation area.
According to the technical scheme, the safety protection wall provided by the embodiment of the invention comprises a plurality of detector groups arranged in a safety protection area. The wireless signal radiation area is formed by receiving and transmitting wireless signals between the detectors in each detector group. The wireless signal radiation areas are mutually overlapped to form a continuous and seamless microwave array in the safety protection area. When an invader intrudes into the safety protection area, the wireless signal of the microwave array is disturbed, and the invader in the safety protection area is monitored according to the signal disturbance. The detection results obtained by compounding the multiple paths of relatively independent wireless signals at the same position are obtained through a large number of detectors, namely, the detection results of the detectors are verified mutually, and the detection results of the detectors are processed and calculated at the bottom layer instead of simply overlapping the AND and OR of the upper layer processing results, so that the influence of interference factors on the detection results is filtered more effectively, and the accuracy of the detection results is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a schematic view of a safety barrier according to an embodiment of the present invention;
FIG. 2 is a schematic view of another safety barrier according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of another probe set according to another embodiment of the present invention;
FIG. 4 is a schematic view of another safety barrier according to an embodiment of the present invention;
FIG. 5a is a schematic diagram of the pairing of the probe sets in two cables according to an embodiment of the present invention;
FIG. 5b is a schematic diagram of the pairing of probe sets in two cables according to another embodiment of the present invention;
FIG. 5c is a schematic diagram of the pairing of probe sets in two cables according to another embodiment of the present invention;
FIG. 5d is a schematic diagram of the pairing of the probe sets in two cables according to another embodiment of the present invention;
FIG. 5e is a schematic diagram of the pairing of the probe sets in two cables according to another embodiment of the present invention;
fig. 6 is a schematic view of another safety protection wall according to an embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a schematic view of a safety protection wall provided in an embodiment of the present invention is provided, where a protection barrier is needed to be provided, for example, the safety protection wall may be an open area, such as a fence or other position that is easy to turn in or out.
As shown in fig. 1, the safety protection wall includes a plurality of dispersed detector groups disposed in a safety protection area.
The probe in this embodiment is in duplex communication and is capable of transmitting/receiving wireless signals. The detector group comprises a transmitting detector for transmitting wireless signals and at least one receiving detector for receiving the wireless signals, and the wireless signal radiation area is formed by the wireless signals transmitted and received by the at least one receiving detector and the transmitting detector. For example, a detector group includes one transmitting detector and one receiving detector, i.e., the ratio of transmitting detector to receiving detector in the detector group is 1: 1; or, a certain detector group includes one transmitting detector and at least two receiving detectors, that is, the ratio of the transmitting detector to the receiving detector in the detector group is 1: n, wherein n is a positive integer greater than 1. Wherein the ratio of transmitting detectors to receiving detectors within different detector groups may be different.
Or, each detector in the detector group is a transceiver detector, and wireless signals are mutually transmitted and received to form a wireless signal radiation area.
In particular, in this embodiment, it is preferable to use the same probe that only works in a single mode, i.e. the probe is used as a receiving probe for receiving wireless signals or as a transmitting probe for transmitting wireless signals.
It should be noted that the connecting line between the transmitting detector and the receiving detector in fig. 1 is only used to indicate the corresponding relationship between the transmitting detector and the receiving detector, and is not used to indicate the radiation area of the wireless signal between the transmitting detector and the receiving detector.
The wireless signals transmitted by the detectors are distributed in a three-dimensional space around the transmitting detectors, for example, the three-dimensional space can be 360 degrees, and the three-dimensional space can be 180 degrees, 90 degrees or other preset angles of the designated direction.
During the concrete implementation, can confirm the direction that emission detector transmitted wireless signal according to the regional specific scene that needs were set up defences, for example, when preventing that the object from invading safety protection area inside, can make the emission detector of safety protection area perimeter deployment transmit the detection signal towards the safety protection area outside, like this, when the object is close to safety protection wall, safety protection wall can detect the invader fast. When people or objects in the safety protection area are prevented from turning out of the area, the emission detector deployed on the periphery of the safety protection area can emit detection signals towards the inner side of the safety protection area, and therefore when the objects are close to the safety protection wall from the safety protection area, the safety protection wall can quickly detect intruding objects.
The transmitting detector and the receiving detector in each detector group receive and transmit wireless signals, a wireless signal radiation area is formed in space, and a plurality of wireless signal radiation areas formed by a plurality of detector groups are overlapped with each other to form a continuous seamless microwave array.
In the embodiment of the invention, the wireless signal can be a microwave signal, and the microwave is a specific wave band in electromagnetic waves, generally a frequency band with the frequency of 300 MHz-300 GHz. When there is no intrusion, the microwave array is in a relatively stable state. When there is an intrusion behavior, the microwave signal will be reflected and diffracted when encountering obstacles such as people or objects in the space propagation process, so as to change the original propagation path, and disturb the energy distribution of the microwave signal in the space. Specifically, after the invader enters the safety protection area, the wireless signal passes through the invader and then is attenuated quickly, so that the intensity of the microwave signal received by the receiving detector is reduced suddenly. The characteristic of the microwave signal is used to detect whether an object is intruding into the safety protection area. The method comprises the steps that disturbance of detection signal radiation fields of a plurality of adjacent detector groups is caused by any intrusion, and the intrusion position of an intruding object is determined according to the fluctuation condition of the detection signals of the plurality of detector groups and the deployment position of the detectors. Further, according to this joint detection method, the intrusion positions of a plurality of intrusions can be detected simultaneously.
During specific implementation, the receiving detectors in the plurality of detector groups send the receiving signals to the monitoring background, and the monitoring background calculates the blocking absorption coefficient and the reflection coefficient of the object according to the number, the position and the variation amplitude of the sudden change of the signals, so that the volume, the motion state, the motion track and the like of the invading object can be distinguished to determine the invading object invading the microwave array. Thereby the interference of small animals, trees and the like can be filtered; and interference caused by weather change, such as large-area and small-amplitude signal change of rain, snow, wind and the like can be filtered out through dynamic calculation.
The receiving signal is a signal generated by the receiving detector receiving the wireless signal transmitted by the corresponding transmitting detector, and the receiving signal at least comprises the signal strength information of the wireless signal received by the receiving detector. The method for reporting the received signal to the monitoring background may be bus reporting, wireless reporting, etc., which is not limited in the present invention.
In addition, the warning area and the early warning area can be divided according to the position of the safety protection wall in the safety protection area, for example, an object is prevented from entering a certain area, an area far away from the area to be protected in the area where the safety protection cable is deployed can be determined as the early warning area, and an area close to the area to be protected in the area where the safety protection cable is deployed can be determined as the warning area. And the threshold value of the fluctuation of the detection signal of the warning area is larger than the threshold value of the fluctuation of the detection signal of the early warning area. When the invader approaches the early warning area, a warning can be broadcast to prevent the invasion; when the invader is in the warning area, the invader response reaction is directly made.
In the embodiment of the invention, the transmitting detector and the receiving detector can transmit wireless signals by adopting the technologies of time division multiplexing, frequency division multiplexing, code division multiplexing and the like, so that a unique physical resource is physically allocated to each detector group.
Time division multiplexing refers to the fact that different probe groups can utilize the same physical resource in different time periods. The frequency division multiplexing technique is to divide the total bandwidth resource of a transmission channel into a plurality of sub-channels, different probe groups transmit wireless signals by using different sub-channels, and if the number of probe groups is greater than the number of sub-channels, at least two probe groups can be allocated to one sub-channel, wherein the at least two probe groups can time-division multiplex the sub-channels. Code division multiplexing refers to the fact that the radio signals of different probe groups can be distinguished by different codes.
For example, in an application scenario adopting frequency division multiplexing, the whole wireless bandwidth resource used by the probe is divided into a plurality of channels, for example, the wireless bandwidth resource is divided into 100 wireless channels, and each wireless channel is spaced by 1MHz, so as to avoid interference in the same space. And mapping the wireless channel allocation rule with the position of the transceiving node, and repeatedly allocating the wireless bandwidth resource when the distance of the safety protection area exceeds 100 detector intervals, namely, a phenomenon that a plurality of detector groups are allocated with the same wireless channel occurs. Each probe has a unique ID (Identification), and the ID of the probe is used to distinguish a plurality of probe groups on the same wireless channel.
Optionally, in other exemplary embodiments of the present invention, the wireless bandwidth resource may set a traffic channel of some other function to add a function of the security protection system, for example, a communication channel of a communication function may be added, and data such as voice, video, short message and/or positioning information may be transmitted by using the communication channel, so that the security protection system can provide a data service.
In other exemplary embodiments of the present invention, the traffic channels that the wireless bandwidth resources can also set further include a positioning channel having a positioning function. The safety protection wall is deployed in a safety protection area, has an inspection test management mode, distributes a specific identification card for an inspection tester, a detector can monitor the identification card and report the monitored information of the identification card to a monitoring background through a positioning channel, and the monitoring background determines the position of the identification card according to the position of the detector reporting the information of the identification card, so as to determine the position of the inspection tester wearing the identification card.
In addition, the safety protection wall provided by the invention can also be applied to a perimeter security system, namely the safety protection wall is arranged on the perimeter of a perimeter security area.
The safety protection wall provided by the embodiment comprises a plurality of detector groups arranged in a safety protection area, wherein wireless signals are transmitted and received among detectors in each detector group to form a wireless signal radiation area. The wireless signal radiation areas are mutually overlapped to form a continuous and seamless microwave array in the safety protection area. When an invader intrudes into the safety protection area, the wireless signal of the microwave array is disturbed, and the invader in the safety protection area is monitored according to the signal disturbance. The detection results of multiple paths of relatively independent wireless signals at the same position are compounded through multiple-transmission and multiple-reception of a large number of detectors, namely, the detection results of the multiple detectors are verified mutually, and the detection results of the detectors are processed and operated on the bottom layer instead of simply overlapping the AND and OR of the upper layer processing results, so that the influence of interference factors on the detection results is filtered more effectively, and the accuracy of the detection results is improved.
In another embodiment of the invention, a vibration sensor can be deployed in the safety protection area, and the vibration sensor is combined with the safety protection wall provided by the invention to determine an invader invading the safety protection area. The vibration sensor collects vibration amplitude in the safety protection area and transmits the vibration amplitude to the monitoring background, so that the monitoring background is combined with a receiving signal of the receiving detector and the vibration amplitude is determined to invade the invader in the safety protection area. In addition, sonar equipment can be deployed and used for assisting in monitoring the invaders in the safety protection area through sonar and/or; and the infrared equipment is used for detecting the invader in the safety protection area in an auxiliary way through an infrared signal. Specifically, the auxiliary devices may be disposed separately from the detectors, or disposed on the detectors, and sense data on a common channel of the detectors.
Referring to fig. 2, a schematic diagram of another safety protection wall according to an embodiment of the present invention is shown, in which all detectors are integrated in a cable, a plurality of wireless signal radiation areas formed between pairs of transmitting detectors and receiving detectors in the cable overlap with each other, and a continuous seamless microwave array is formed in the safety protection area.
As shown in fig. 2, a plurality of detector groups are uniformly arranged in a cable, and the transmitting detectors and the receiving detectors are distributed at intervals. The transmitting detector and the receiving detector are distributed at intervals according to the proportion of 1: 1. The interval between the emission detector and the receiving detector of the same detector group belongs to the detectors of other detector groups.
As shown in fig. 2, the n-th and (n +3) -th detectors are a detector group, where n is an odd number. If the 1 st and the 4 th detectors are the same detector group, the 4 th detector receives the wireless signal transmitted by the 1 st detector; the 3 rd and the 6 th detectors are the same detector group, and the 6 th detector receives the wireless signal transmitted by the 3 rd detector.
Fig. 2 is merely a specific embodiment, and in other embodiments of the present invention, the ratio of the transmitting detector to the receiving detector may be 1: n, wherein n is a positive integer greater than 1. Moreover, the ratio of transmit detectors to receive detectors within different detector groups may vary.
When the number ratio of the transmitting detector and the receiving detector is 1:1, the manner in which the transmitting detector and the receiving detector form the detector group may be the manner shown in fig. 3, the 1 st detector being the receiving detector, the 2 nd being the transmitting detector, and the 3 rd and 4 th being the receiving detectors. The 2 nd detector and the 1 st and 4 th detectors are a detector group, the 5 th detector and the 3 rd and 7 th detectors are a detector group, and the 8 th detector and the 6 th and 10 th detectors are a detector group.
The safety protection wall provided by the embodiment integrates all detectors in the cable, the cable can be buried underground and hung on the wall (can be hung on the wall horizontally or vertically, and the specific mode is determined according to the position of a safety protection area), and the safety protection wall can be suitable for various complex terrains. The buried cable has strong concealment and is not easy to be discovered or avoided by intruders. Moreover, the detector in the security cable is low-power consumption equipment, the length of a single cable can reach 500 meters, and the coverage area is large.
Referring to fig. 4, another safety protection wall according to an embodiment of the present invention is shown, in which the transmitting detectors are distributed in the transmitting cable and the receiving detectors are distributed in the receiving cable.
As shown in fig. 4, the transmitting detectors are uniformly distributed in the transmitting cable, the receiving detectors are uniformly distributed in the receiving cable, the receiving detectors in the receiving cable can receive the wireless signals transmitted by the corresponding transmitting detectors in the transmitting cable to form wireless signal radiation areas, the wireless signal radiation areas are overlapped with each other, and a continuous seamless microwave array is formed in the safety protection area.
Alternatively, any one of the detectors (transmitting detector or receiving detector or transmitting and receiving detector) in the detector group is disposed in one cable and the other detectors in the detector group are disposed in another cable. The wireless signal radiation areas formed by a plurality of detector groups in the two cables are mutually overlapped to form a continuous seamless microwave array.
It should be noted that the connecting line between the transmitting detector and the receiving detector in the figure is only used to indicate the corresponding relationship between the transmitting detector and the receiving detector, and is not used to indicate the radiation area of the wireless signal between the transmitting detector and the receiving detector.
The mode of the transmitting detector and the receiving detector to form the detector group can refer to five modes shown in fig. 5a to 5 e:
as shown in fig. 5a, in the figure, 1-5 are emission detectors, 1 ' -5 ' are reception detectors, wherein 1, 1 ', 2 ', 3 ', 4 ', 5 and 5 ' respectively form five detector groups, no other detectors are arranged between the emission detectors and the corresponding reception detectors, and a plurality of detector groups are arranged in parallel.
As shown in FIG. 5b, 1-5 are emission detectors, 1 '-5' are reception detectors, wherein 1 and 2 ', 2 and 3', 3 and 4 ', 4 and 5', 5 and 6 'respectively form five detector groups, and the emission detector corresponding to the reception detector 1' is not shown in the figure. The transmitting detector and the receiving detector are separated by one other detector, and a plurality of detector groups are arranged in parallel.
As shown in fig. 5c, 1-5 are emission detectors, 1 ' -7 ' are reception detectors, wherein 1 and 3 ', 2 and 4 ', 3 and 5 ', 4 and 6 ', 5 and 7 ' respectively form five detector groups, and the emission detectors corresponding to the reception detectors 1 ' and 2 ' respectively are not shown in the figure. The transmitting detector and the receiving detector are separated by two other detectors, and a plurality of detector groups are arranged in parallel.
As shown in FIG. 5d, 1-5 are transmitting detectors and 1 ' -7 ' are receiving detectors, wherein 1 and 3 ', 2 and 1 ', 3 and 5 ', 4 and 2 ', 5 and 7 ' respectively form five detector groups. The transmitting detector and the receiving detector are separated by two other detectors, and a plurality of detector groups are arranged in a mutually crossed manner.
As shown in FIG. 5e, 1-6 are transmitting detectors and 1 ' -6 ' are receiving detectors, wherein 1 and 4 ', 2 and 2 ', 3 and 6 ', 4 and 1 ', 6 and 3 ' respectively form five detector groups. The detectors corresponding to 5, 5' respectively are not shown in the figure. The transmitting detector and the receiving detector are separated by 3 other detectors, and a plurality of detector groups are arranged in a mutually crossed manner.
According to the microwave array provided by the embodiment, the transmitting detector is integrated in the transmitting cable, the receiving detector is integrated in the receiving cable, and the cable can be suitable for various complex terrains. Furthermore, two cables can form a larger protection zone than one cable.
Referring to fig. 6, another safety protection wall according to an embodiment of the present invention is shown, in this embodiment, a ratio of the transmitting detector to the receiving detector is 1:2, and a manner in which the transmitting detector and the receiving detector form a detector group may refer to the manner shown in fig. 5a to 5 e. All the transmitting detectors are distributed in one transmitting cable, and all the receiving detectors are respectively and uniformly distributed in two receiving cables.
As shown in fig. 6, the wireless signal transmitted by the transmitting detector in the transmitting cable can be received by the corresponding receiving detector in the two receiving cables, so as to form a wireless signal radiation area, and a plurality of wireless signal radiation areas are overlapped with each other, so as to form a continuous seamless microwave array in the safety protection area.
During specific implementation, the two receiving cables are respectively arranged on two sides of the transmitting cable, the transmitting cable can be hung on a wall, and the two receiving cables are buried underground, so that the processes that an invader is close to the outside of the wall, turns over the wall and turns into the wall are accurately determined.
According to the safety protection wall provided by the embodiment, all the emission detectors are integrated in one emission cable, all the receiving detectors are uniformly distributed in two receiving cables, the cables can be suitable for various complex terrains, and in addition, three cables can obtain a larger protection area.
It should be noted that more than three (for example, four) security cables can be used to form the detection sensing field, so as to form a larger security area.
The invention also provides an embodiment of the detector corresponding to the embodiment of the safety protection wall.
The detector provided by the invention has a signal transceiving function and is arranged in a safety protection area, the detector and other detectors form a detector group, wireless signal transceiving is carried out to form a wireless signal radiation area, the wireless signal radiation area is mutually overlapped with the wireless signal radiation area formed by other detector groups, and a continuous and seamless microwave array is formed in the safety protection area.
Specifically, the detector can be used as a transceiver detector for transmitting wireless signals and receiving wireless signals at the same time, and forms a detector group with other detectors, and the detector and other detectors transmit and receive signals mutually to form a wireless signal radiation area; the detectors within the detector group may also operate in a single mode, either as a transmitting detector or a receiving detector, preferably in this embodiment the detectors operate in a single mode. When the probe is configured as a receiving probe, for receiving a wireless signal transmitted by a transmitting probe. When the probe is configured as a transmitting probe, for transmitting a wireless signal. The wireless signal emitted by the emission detector is distributed in a three-dimensional space around the emission detector, for example, the three-dimensional space can be 360 degrees, and the three-dimensional space can be 180 degrees, 90 degrees or other preset angles of the designated direction. The wireless signal can be a microwave signal, and the microwave is a specific wave band in electromagnetic waves, and generally refers to a frequency band with the frequency of 300 MHz-300 GHz.
And the transmitting detector and the corresponding receiving detector transmit wireless signals by using the allocated wireless channel to obtain a wireless signal radiation area.
The plurality of detector groups can be arranged in the safety protection area, wireless signal transceiving is carried out between the transmitting detector and the receiving detector in each detector group to form a wireless signal radiation area, and the wireless signal radiation areas formed by the plurality of detector groups in the safety protection area are overlapped/crossed with each other to form a continuous seamless microwave array.
The transmitting detector and the receiving detector can transmit wireless signals by adopting the technologies of time division multiplexing, frequency division multiplexing, code division multiplexing and the like, and the purpose of physically allocating a unique physical resource for each detector group is realized. For example, in an application scenario adopting frequency division multiplexing, the whole wireless bandwidth resource used by the probe is divided into a plurality of channels, for example, the wireless bandwidth resource is divided into 100 wireless channels, and each wireless channel is spaced by 1MHz, so as to avoid interference in the same space.
Optionally, the wireless bandwidth resource further includes a traffic channel, including a communication channel and/or a positioning channel.
The communication channel is used for transmitting data to the monitoring background; voice, video, short message and/or positioning information data may be transmitted using the communication channel.
The safety protection wall is deployed in a safety protection area, has an inspection test management mode, distributes a specific identification card for an inspection tester, a detector can monitor the identification card and report the monitored information of the identification card to a monitoring background through a positioning channel, and the monitoring background determines the position of the identification card according to the position of the detector reporting the information of the identification card, so as to determine the position of the inspection tester wearing the identification card.
The probe provided by this embodiment is capable of transmitting/receiving wireless signals for duplex communication, and the wireless signals transmitted by the probe are uniformly distributed in the surrounding three-dimensional space, for example, the three-dimensional space range may be 360 °, and the three-dimensional range of 180 °, 90 ° or other preset angles in the designated direction. The wireless signal radiation area formed by the transmitting detector and the receiving detector for transmitting and receiving wireless signals is also solid and not linear or planar. Moreover, the detectors are low power devices, so that a wireless signal radiation area formed by a plurality of detector groups can form a continuous seamless microwave array. And determining an invader invading the safety protection area according to the signal fluctuation of the microwave array.
The foregoing is directed to embodiments of the present invention, and it is understood that various modifications and improvements can be made by those skilled in the art without departing from the spirit of the invention.
Claims (10)
1. A safety protection wall, comprising:
the system comprises a plurality of detector groups arranged in a safety protection area, wherein the detectors in the same detector group receive and transmit wireless signals to form a wireless signal radiation area, and the detectors are duplex communication equipment and can transmit and/or receive wireless signals; each detector group comprises a transmitting detector for transmitting wireless signals and at least one receiving detector for receiving wireless signals, namely the ratio of the transmitting detector to the receiving detector in the detector group is 1: n, n is greater than or equal to 1;
a plurality of wireless signal radiation areas that a plurality of detector groups constitute overlap each other safety protection area forms continuous seamless microwave array, the safety protection wall passes through microwave array realizes right the monitoring of safety protection area invading thing, the detector setting among a plurality of detector groups is in one or more cables.
2. The safety protection wall according to claim 1, wherein the safety protection wall monitors invaders in a safety protection area through the microwave array, and specifically comprises:
and the safety protection wall determines the signal disturbance of the microwave array according to the received signals of the detectors and determines the invader according to the signal disturbance.
3. The wall of claim 1, wherein adjacent detector groups of the plurality of detector groups respectively occupy different wireless channels for wireless signal transceiving.
4. The safety protection wall according to claim 3, wherein a traffic channel is provided in the wireless channel for transmitting voice, video, short message and/or positioning information.
5. The safety barrier of claim 1, further comprising:
the vibration sensor is used for acquiring the vibration amplitude of the safety protection area so that the monitoring background can determine an invader invading the safety protection area by combining the received signals of the detectors and the vibration amplitude;
and/or sonar equipment for assisting in monitoring the invaders in the safety protection area through sonar;
and/or, the infrared equipment is used for detecting the invader in the safety protection area in an auxiliary way through an infrared signal;
the vibration sensor, the sonar equipment and/or the infrared equipment are arranged with each detector in the detector group in a scattered mode or are integrated with the detectors.
6. The safety barrier of claim 1,
all detectors of the safety protection area are arranged in a cable, the detectors in each group are distributed at intervals, a plurality of wireless signal radiation areas formed by a plurality of detector groups in the cable are mutually overlapped, and a continuous seamless microwave array is formed in the safety protection area;
or,
one of the detectors in each detector group is distributed in a first cable, the other detectors in the detector group are arranged in a second cable, and a plurality of detector groups are overlapped with each other in a plurality of wireless signal radiation areas formed between the first cable and the second cable to form a continuous seamless microwave array in the safety protection area;
or,
each detector group comprises three detectors, the three detectors are respectively arranged in three cables, a plurality of wireless signal radiation areas formed by the detector groups in the three cables are mutually overlapped, and a continuous seamless microwave array is formed in the safety protection area.
7. The safety protection wall according to claim 1, wherein each of the detector groups comprises a transmitting detector for transmitting wireless signals and at least one receiving detector for receiving wireless signals, or; each detector in the detector group is a transceiving detector which mutually transceives wireless signals.
8. A probe, characterized by:
the detector has a signal transceiving function and is arranged in a safety protection area;
the detector and other detectors form a detector group, wireless signal receiving and transmitting are carried out to form a wireless signal radiation area, the wireless signal radiation area is overlapped with the wireless signal radiation area formed by other detector groups, a continuous and seamless microwave array is formed in the safety protection area, and the detectors in the detector group are arranged in one or more cables.
9. The detector according to claim 8, wherein the detector is a transmitting detector for transmitting wireless signals and at least one receiving detector for receiving wireless signals to form a detector group, and the detector performs signal transceiving to form a wireless signal radiation area, or;
the detector is used as a receiving detector for receiving wireless signals, and forms a detector group with a detector used as a transmitting detector, and the wireless signal radiation area is formed by receiving and transmitting signals.
10. The detector of claim 8, wherein the detector is a transceiver detector for transmitting wireless signals and simultaneously receiving wireless signals, and the transceiver detector and other detectors form a detector group for transceiving signals with each other to form a wireless signal radiation area.
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| CN108375799A (en) * | 2018-01-22 | 2018-08-07 | 电子科技大学 | A kind of method and system carrying out aircraft detection using passive passive signal |
| EP3901585A4 (en) * | 2018-12-20 | 2022-08-03 | Schaeffler Technologies AG & Co. KG | Detection system and wind driven generator |
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| CN115038141A (en) * | 2022-05-30 | 2022-09-09 | 广东开放大学（广东理工职业学院） | LoRa ad hoc network method and system of mesh structure |
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