CN205508034U - Location type leaks cable intrusion detection device - Google Patents
Location type leaks cable intrusion detection device Download PDFInfo
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- CN205508034U CN205508034U CN201620302974.XU CN201620302974U CN205508034U CN 205508034 U CN205508034 U CN 205508034U CN 201620302974 U CN201620302974 U CN 201620302974U CN 205508034 U CN205508034 U CN 205508034U
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Abstract
The utility model relates to a burglar alarm product field discloses a location type leaks cable intrusion detection device. The intrusion detection device leaks the cable including the transmission and leaks the cable with receiving, includes still that the M sequence produces module, carrier frequency generator, signal modulator, radio frequency amplifier, low -noise amplifier, signal demodulation ware, a plurality of correlator and a detection module. The high frequency code of M sequence and the measuring of decoding not only can be realized to the intrusion detection device, obtain transmission leakage cable and have detected initial point to the transmission delay who invades the target location to can accurate discernment the invasion position of invasion target, can also be convenient for realize that the segmentation of taking precautions against the section detects, and can adjust each sectionalised detectivity according to particular case, reduce the false alarm rate, avoid appearing the phenomenon of wrong report. Furthermore, location type leaks cable intrusion detection device still has simple structure, the programming is easy and the cheap advantage of accessory, and is with low costs, efficient, be convenient for actual popularization and use.
Description
Technical field
This utility model relates to burglar alarm product scope, in particular it relates to a kind of location type leakage cable intrusion detection device.
Background technology
Leakage cable intrusion detector is a kind of signals leakiness principle utilizing leaky cable and the perimeter alarm product made, produce this product at home existing more than 20 year, it is widely used in prison, the place such as detention house, villa community, literary composition rich unit, border, airport, military key area.The extraordinary leaky cable (i.e. launch leaky cable and receive leaky cable) that existing leakage cable intrusion detector is mainly controlled main frame and two some rice (such as 100m) by leaky cable forms, wherein, launch leaky cable and receive leaky cable for being embedded in the underground taking precautions against area peripheral edge, and two leaky cable keep certain level interval, two leaky cables are under described leaky cable controls the feed effect of main frame, produce stable coupled electromagnetic field, and the original balanced fields of disturbance is just had when there being unauthorized person near leaky cable, and control host detection out by described leaky cable, and then produce alarm signal etc..
But current leakage cable intrusion detector there is a problem in that: (1) have unauthorized person near time accuracy of identification low, one leaky cable controls main frame and the strick precaution section of one whole segment length (usual 100m) can only carry out detection identification, it is impossible to identify the position of intrusion target more accurately；(2) cannot be carried out segmentation detection and the sensitivity adjusting of segmentation detection, false alarm rate is the highest, the phenomenon of false alarm easily occurs；(3) ADC(Analog to Digital at a high speed is generally used in reception leaky cable side
Converter, A-D converter) device gathers data, and this device market price is more expensive so that existing leakage cable intrusion detector cost often remains high.
Utility model content
Problem for aforementioned existing leakage cable intrusion detector, this utility model provides a kind of location type leakage cable intrusion detection device, not only can realize high-frequency coding and the decoding detection of M sequence, obtain launching leaky cable detection starting point to the propagation delay time of intrusion target position, such that it is able to accurately identify the invasion position of intrusion target, the segmentation detection taking precautions against section can also be facilitated implementation, and the detection sensitivity of each segmentation can be regulated as the case may be, reduce false alarm rate, it is to avoid the phenomenon of wrong report occurs.Additionally, the advantage that described location type leakage cable intrusion detection device also has simple in construction, programming is easy and parts price is cheap, low cost, efficiency is high, it is simple to reality is promoted and uses.
The technical solution adopted in the utility model, provide a kind of location type leakage cable intrusion detection device, including launching leaky cable and receiving leaky cable, also include M sequence generation module, carrier generator, signal modulator, radio frequency amplifier, low-noise amplifier, demodulator of PM signal PM, several correlators and a detection module；Described M sequence generation module and described carrier generator are electrically connected described signal modulator, and described signal modulator electrically connects described radio frequency amplifier, and described radio frequency amplifier electrically connects described transmitting leaky cable；Described reception leaky cable electrically connects described low-noise amplifier, described low-noise amplifier and described carrier generator are electrically connected described demodulator of PM signal PM, described demodulator of PM signal PM and described M sequence generation module are electrically connected each described correlator, and each described correlator the most also electrically connects described detection module.
Concrete, described detection module is also electrically connected any one in display module, key-press module and output module or their combination in any.
Concrete, between described correlator and described detection module, it is serially connected with a low pass filter.
Concrete, between described signal modulator and described radio frequency amplifier, it is serially connected with a wave filter.
Concrete, described location type leakage cable intrusion detection device also includes power module.
Concrete, described M sequence generation module uses fpga chip.
Concrete, described detection module uses microcontroller chip.
Concrete, described signal modulator is phase-modulator, and described demodulator of PM signal PM is phase demodulator.
Concrete, the spacing between described transmitting leaky cable and described reception leaky cable is between 1～1.5m.
To sum up, use a kind of location type leakage cable intrusion detection device provided by the utility model, have the advantages that (1) can realize high-frequency coding and the decoding detection of M sequence, obtain launching leaky cable detection starting point to the propagation delay time of intrusion target position, such that it is able to accurately identify the invasion position of intrusion target, precision can accomplish 2m；(2) segmentation that can facilitate implementation strick precaution section detects, and can regulate the detection sensitivity of each segmentation as the case may be, reduces false alarm rate, it is to avoid the phenomenon of wrong report occur；(3) without using ADC device that market price is more expensive to gather data, but the external correlator using market price less expensive be correlated with and is obtained scene intrusion target signal, and manufacturing cost is lower；(4) using microcontroller chip that on-the-spot intrusion target signal is acquired and is detected, easily, efficiency is high in programming；(5) described location type leakage cable intrusion detection device also has simple in construction and easily fabricated advantage, it is simple to actual popularization and use.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structured flowchart of the location type leakage cable intrusion detection device that this utility model provides.
Detailed description of the invention
Hereinafter with reference to accompanying drawing, describe, by way of example, the location type leakage cable intrusion detection device that this utility model provides in detail.At this it should be noted that be adapted to assist in for the explanation of these way of example and understand this utility model, but it is not intended that restriction of the present utility model.
Various technology described herein may be used for but is not limited to burglar alarm product scope, it is also possible to for other similar field.
The terms "and/or", it it is only a kind of incidence relation describing affiliated partner, three kinds of relations can be there are in expression, such as, A and/or B, can represent: individualism A, individualism B, there are tri-kinds of situations of A and B simultaneously, the terms "/and " it is to describe another kind of affiliated partner relation, two kinds of relations can be there are, such as in expression, A/ and B, can represent: individualism A, two kinds of situations of individualism A and B, additionally, character "/" herein, typicallys represent forward-backward correlation to liking a kind of "or" relation.
Embodiment one
Fig. 1 shows that the location type leakage cable intrusion that this utility model provides detects the structured flowchart of device.The described location type leakage cable intrusion detection device that the present embodiment provides, including launching leaky cable and receiving leaky cable, also include M sequence generation module, carrier generator, signal modulator, radio frequency amplifier, low-noise amplifier, demodulator of PM signal PM, several correlators and a detection module；Described M sequence generation module and described carrier generator are electrically connected described signal modulator, and described signal modulator electrically connects described radio frequency amplifier, and described radio frequency amplifier electrically connects described transmitting leaky cable；Described reception leaky cable electrically connects described low-noise amplifier, described low-noise amplifier and described carrier generator are electrically connected described demodulator of PM signal PM, described demodulator of PM signal PM and described M sequence generation module are electrically connected each described correlator, and each described correlator the most also electrically connects described detection module.
As shown in Figure 1, in the mechanism of described location type leakage cable intrusion detection device, it is configured with three correlators: the first correlator, the second correlator and third correlator, each described relevant device is electrically connected described M sequence generation module, described demodulator of PM signal PM and described detection module.Described M sequence generation module can be, but not limited to use FPGA(Field-Programmable Gate
Array, field programmable gate array) chip, for producing pseudorandom M sequence code (i.e. maximum length linear shift register sequence code, it is a kind of pseudo random sequence code, pseudo-noise code or pseudo noise code), and described M sequence code is sent into immediately the input of described signal modulator and the input of each described correlator；Described carrier generator is used for producing carrier signal, and carrier signal is delivered to input and the input of described demodulator of PM signal PM of described signal modulator；Described signal modulator is used for carrying out signal modulation (can be, but not limited to as any one in amplitude-modulating modulation, frequency modulation modulation, phase modulation modulation and hybrid modulation), described M sequence code is carried in described carrier signal, obtains the high-frequency coding signal sent to described radio-frequency power generator；Described radio-frequency power amplifier is for amplifying the power of described high-frequency coding signal, in order to the signal energy that described transmitting leaky cable feed-in is enough, enable to produce stable coupled electromagnetic field between itself and described reception leaky cable.
The induced signal of amplification from described reception leaky cable and the faintest induced signal, and is delivered to described demodulator of PM signal PM for low noise amplification by described low-noise amplifier.Described demodulator of PM signal PM, for being demodulated the induced signal of described amplification according to described carrier signal, obtains the sensing M sequence code sent to relevant device each described；Described correlator, for described sensing M sequence code and original M sequence code are carried out relevant treatment, obtains on-the-spot intrusion target signal；Described detection module can be, but not limited to use microcontroller chip, for receiving the described on-the-spot intrusion target signal of process, determine to solve and launch leaky cable detection starting point to the propagation delay time of intrusion target position, thus can accurately identify the invasion position of intrusion target, its precision can accomplish 2m, it is greatly improved invasive biology precision, the segmentation detection taking precautions against section can also be facilitated implementation simultaneously, and the detection sensitivity of each segmentation can be regulated as the case may be, reduce false alarm rate, it is to avoid the phenomenon of wrong report occurs.In addition, without using ADC device that market price is more expensive to gather data, but the external correlator using market price less expensive is correlated with and is obtained on-the-spot intrusion target signal, manufacturing cost is lower, using microcontroller chip that on-the-spot intrusion target signal is acquired and is detected, easily, efficiency is high in programming simultaneously, the most described location type leakage cable intrusion detection device has simple in construction and easily fabricated advantage, it is simple to actual popularization and use.
Concrete, described detection module is also electrically connected any one in display module, key-press module and output module or their combination in any.As it is shown in figure 1, described display module is used for showing intrusion detection result；Described key-press module is used for providing human-computer interaction function；Described output module is for exporting the signal of such as alarm signal etc, in order to the equipment such as external warning light.As optimize, as it is shown in figure 1, in the present embodiment, described detection module has also been electrically connected display module, key-press module and output module.
Concrete, between described correlator and described detection module, it is serially connected with a low pass filter.As it is shown in figure 1, described low pass filter is used for removing described on-the-spot intrusion target signal medium-high frequency composition, it is ensured that the degree of accuracy of subsequent detection.
Concrete, between described signal modulator and described radio frequency amplifier, it is serially connected with a wave filter.As it is shown in figure 1, described wave filter is for removing the out-of-band frequency composition in described high-frequency coding signal, it is to avoid follow-up invalid amplification out-of-band frequency composition, it is ensured that the power amplification efficiency of described power amplifier height as far as possible, it is to avoid unnecessary energy is lost.
Concrete, described location type leakage cable intrusion detection device also includes power module.As it is shown in figure 1, described power module is for providing electric energy support, for example, fpga chip and microcontroller chip to provide the running voltage of+5V or 3.3V for other electronic module.
Concrete, described signal modulator is phase-modulator, and described demodulator of PM signal PM is phase demodulator.
Concrete, the spacing between described transmitting leaky cable and described reception leaky cable is between 1～1.5m.
To sum up, the location type leakage cable intrusion detection device that the present embodiment is provided, have the advantages that (1) can realize high-frequency coding and the decoding detection of M sequence, obtain launching leaky cable detection starting point to the propagation delay time of intrusion target position, such that it is able to accurately identify the invasion position of intrusion target, precision can accomplish 2m；(2) segmentation that can facilitate implementation strick precaution section detects, and can regulate the detection sensitivity of each segmentation as the case may be, reduces false alarm rate, it is to avoid the phenomenon of wrong report occur；(3) without using ADC device that market price is more expensive to gather data, but the external correlator using market price less expensive be correlated with and is obtained scene intrusion target signal, and manufacturing cost is lower；(4) using microcontroller chip that on-the-spot intrusion target signal is acquired and is detected, easily, efficiency is high in programming；(5) described location type leakage cable intrusion detection device also has simple in construction and easily fabricated advantage, it is simple to actual popularization and use.
As it has been described above, this utility model can preferably be realized.For a person skilled in the art, according to teaching of the present utility model, the location type leakage cable intrusion detection device designing multi-form is not required to performing creative labour.In the case of without departing from principle of the present utility model and spirit, these embodiments are changed, revise, replace, integrate and modification still falls within protection domain of the present utility model.
Claims (9)
1. a location type leakage cable intrusion detection device, including launching leaky cable and receiving leaky cable, it is characterized in that, also include M sequence generation module, carrier generator, signal modulator, radio frequency amplifier, low-noise amplifier, demodulator of PM signal PM, several correlators and a detection module；
Described M sequence generation module and described carrier generator are electrically connected described signal modulator, and described signal modulator electrically connects described radio frequency amplifier, and described radio frequency amplifier electrically connects described transmitting leaky cable；
Described reception leaky cable electrically connects described low-noise amplifier, described low-noise amplifier and described carrier generator are electrically connected described demodulator of PM signal PM, described demodulator of PM signal PM and described M sequence generation module are electrically connected each described correlator, and each described correlator the most also electrically connects described detection module.
2. a kind of location type leakage cable intrusion detection device as claimed in claim 1, it is characterised in that described detection module is also electrically connected any one in display module, key-press module and output module or their combination in any.
3. a kind of location type leakage cable intrusion detection device as claimed in claim 1, it is characterised in that be serially connected with a low pass filter between described correlator and described detection module.
4. a kind of location type leakage cable intrusion detection device as claimed in claim 1, it is characterised in that be serially connected with a wave filter between described signal modulator and described radio frequency amplifier.
5. a kind of location type leakage cable intrusion detection device as claimed in claim 1, it is characterised in that described location type leakage cable intrusion detection device also includes power module.
6. a kind of location type leakage cable intrusion detection device as claimed in claim 1, it is characterised in that described M sequence generation module uses fpga chip.
7. a kind of location type leakage cable intrusion detection device as claimed in claim 1, it is characterised in that described detection module uses microcontroller chip.
8. a kind of location type leakage cable intrusion detection device as claimed in claim 1, it is characterised in that described signal modulator is phase-modulator, and described demodulator of PM signal PM is phase demodulator.
9. a kind of location type leakage cable intrusion detection device as claimed in claim 1, it is characterised in that the spacing between described transmitting leaky cable and described reception leaky cable is between 1～1.5m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620302974.XU CN205508034U (en) | 2016-04-12 | 2016-04-12 | Location type leaks cable intrusion detection device |
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| CN201620302974.XU CN205508034U (en) | 2016-04-12 | 2016-04-12 | Location type leaks cable intrusion detection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107293077A (en) * | 2017-06-02 | 2017-10-24 | 太原理工大学 | Perimeter intrusion detecting device and method based on orthogonal CPPM signals |
| CN108055218A (en) * | 2017-10-18 | 2018-05-18 | 上海微波技术研究所（中国电子科技集团公司第五十研究所） | Leakage cable intrusion detection method based on frequency selectivity encoding multicarrier modulation technique |
| CN109782266A (en) * | 2017-11-10 | 2019-05-21 | 江苏中天科技股份有限公司 | Localization method and device, system, computer installation and readable storage medium storing program for executing |
-
2016
- 2016-04-12 CN CN201620302974.XU patent/CN205508034U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107293077A (en) * | 2017-06-02 | 2017-10-24 | 太原理工大学 | Perimeter intrusion detecting device and method based on orthogonal CPPM signals |
| CN107293077B (en) * | 2017-06-02 | 2019-01-08 | 太原理工大学 | Perimeter intrusion detecting device and method based on orthogonal CPPM signal |
| CN108055218A (en) * | 2017-10-18 | 2018-05-18 | 上海微波技术研究所（中国电子科技集团公司第五十研究所） | Leakage cable intrusion detection method based on frequency selectivity encoding multicarrier modulation technique |
| CN109782266A (en) * | 2017-11-10 | 2019-05-21 | 江苏中天科技股份有限公司 | Localization method and device, system, computer installation and readable storage medium storing program for executing |
| CN109782266B (en) * | 2017-11-10 | 2023-09-26 | 江苏中天科技股份有限公司 | Positioning method, positioning device, positioning system, computer device and readable storage medium |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160824 Termination date: 20170412 |
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| CF01 | Termination of patent right due to non-payment of annual fee |