CN204044957U - A kind ofly can identify the leakage cable intrusion detector that electric pulse disturbs - Google Patents
A kind ofly can identify the leakage cable intrusion detector that electric pulse disturbs Download PDFInfo
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- CN204044957U CN204044957U CN201420527856.XU CN201420527856U CN204044957U CN 204044957 U CN204044957 U CN 204044957U CN 201420527856 U CN201420527856 U CN 201420527856U CN 204044957 U CN204044957 U CN 204044957U
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Abstract
The utility model discloses a kind of leakage cable intrusion detector that electric pulse disturbs that can identify, it comprises transmitter module, receiver module, Doppler's extraction module, amplification module A, detection module, amplification module B and message processing module, transmitter module will transmit and be transmitted into leaky cable A, receiver module receives the leakage signal that leaky cable B transmits, the output of receiver module is connected with the input of doppler modular by signalling channel, Doppler's extraction module carries out the extraction of Doppler signal to leakage signal, amplification module A carries out amplification process to the Doppler signal extracted, and the signal after amplifying is sent to message processing module, the output of receiver module is also connected by the input of interfering channel with detection module, detection module carries out demodulation to leakage signal, amplification module B amplifies the signal after demodulation, and the restituted signal after amplifying is sent to message processing module, message processing module carries out analyzing and processing to Doppler signal and restituted signal.
Description
Technical field
The utility model relates to a kind of leakage cable intrusion detector, particularly relates to a kind of leakage cable intrusion detector that electric pulse disturbs that can identify.
Background technology
Leaky cable is usually again referred to as leakage induction cable, and leaky cable integrates the function such as Signal transmissions, launching and receiving, has the double action of concentric cable and antenna simultaneously, is a kind of telecommunication cable.Leaky cable is mainly used in outdoor perimeter intrusion detecting system, itself is not or does not possess warning function, be responsible for the parts mainly leakage cable intrusion detector judging and report to the police, leakage cable intrusion detector is the signals leakiness principle utilizing leaky cable, the perimeter alarm product made.Be widely used in the places such as turnkey institute, villa community, Wen Bo unit, border, airport, military key area.
Conventional leak cable intrusion detector detects invasion: two leaky cables laid, form an invisible cylindricality electromagnetic field zone of protection in-between, when human body, metallic object move in this radio-frequency (RF) magnetic field region, detect with regard to causing electromagnetic field magnitude and phase perturbation and being detected device, and produce alerting signal, reach warning object.
It is enter radio-frequency (RF) magnetic field according to human body that conventional leak cable intrusion detector detects invasion, amplitude and phase perturbation are caused to magnetic field, reach warning object, but may owing to there is electric pulse interference in installation environment, enter detector and will make the energy jump in working channel, cause wrong report, make troubles to use.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, proposes a kind of leakage cable intrusion detector that electric pulse disturbs that can identify, even if working environment exists impulse disturbances, carries out identification shielding by another road interfering channel paired pulses interference.
The purpose of this utility model is achieved through the following technical solutions: a kind ofly can identify the leakage cable intrusion detector that electric pulse disturbs, it comprises transmitter module, receiver module, Doppler's extraction module, amplification module A and information processing module, it also comprises detection module and amplification module B, described receiver module is connected with Doppler's extraction module and amplification module A successively, form signalling channel, receiver module is connected with detection module and amplification module B successively, forms interference detection passage.
The signal of transmitter module exports and is connected with leaky cable A, transmitter module will transmit and be transmitted into leaky cable A, receiver module receives the leakage signal that leaky cable B transmits, the output of receiver module is connected with the input of doppler modular by signalling channel, Doppler's extraction module carries out the extraction of Doppler signal to leakage signal, amplification module A carries out amplification process to the Doppler signal extracted, and the signal after amplifying is sent to message processing module; The output of receiver module is also connected with the input of detection module by interference detection passage, detection module carries out demodulation to leakage signal, amplification module B carries out amplification process to the signal after demodulation, and the restituted signal after amplifying is sent to message processing module, message processing module carries out treatment and analysis to Doppler signal and restituted signal.
Described Doppler's extraction module comprises frequency mixer, amplifier and phase demodulator, one of one of described frequency mixer input and receiver module exports and is connected, another input of frequency mixer is fed back to export be connected with one of transmitter module, the output of frequency mixer is connected with the input of amplifier, the output of amplifier is connected with the input of phase demodulator, and the output of phase demodulator is connected with the input of amplification module.
Described amplification module is the amplifier of level Four cascade.
Described amplification module is programmable amplifier.
It also comprises local oscillator, and described local oscillator exports to input with one of the frequency mixer of Doppler's extraction module and is connected, and another input of this frequency mixer is connected with the output of receiver module.
It also comprises power splitter, described power splitter is one-to-two power splitter, the input of one-to-two power splitter is connected with the output of local oscillator, an output of one-to-two power splitter is connected with the input of transmitter module, another of one-to-two power splitter exports to input with one of frequency mixer and is connected, and another input of this frequency mixer is connected with the output of receiver module.
It also comprises filtration module, and the input of described filtration module is connected with the output of phase demodulator, and the output of filtration module is connected with the input of amplification module.
It also comprises keyboard and display, described keyboard is connected with the input through keyboard of message processing module, can parameters information by keyboard, display is connected with the display translation of message processing module, display display configuration information, analysis processing result and warning message.
It also comprises power module, and described power module is connected with transmitter module, receiver module and message processing module, for it provides power supply.
It also comprises record storage, and described record storage is connected with message processing module, and the leakage signal of this reception and analysis processing result thereof are sent to record storage and preserve by message processing module, so that host computer extracts historical data.
The beneficial effects of the utility model are: the utility model is a kind of leakage cable intrusion detector that electric pulse disturbs that can identify, interfering channel is added in detector inside, even if detector uses in the environment having electric pulse to disturb, the warning that message processing module also can be distinguished normal invasion or cause due to electric pulse, thus effectively shielding electric pulse interference, reduce the object of rate of false alarm.
Accompanying drawing explanation
Fig. 1 is one of theory diagram of the utility model intrusion detector;
Fig. 2 is one of the utility model Doppler extraction module and annexation theory diagram thereof;
Fig. 3 is the utility model Doppler extraction module and annexation theory diagram two thereof;
Fig. 4 is the utility model Doppler extraction module and annexation theory diagram three thereof;
Fig. 5 is the principle of work block diagram two of the utility model intrusion detector.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail, but protection domain of the present utility model is not limited to the following stated.
As shown in Figure 1, a kind ofly can identify the leakage cable intrusion detector that electric pulse disturbs, it comprises transmitter module, receiver module, Doppler's extraction module, amplification module A and information processing module, it also comprises detection module and amplification module B, described receiver module is connected with Doppler's extraction module and amplification module A successively, form signalling channel, receiver module is connected with detection module and amplification module B successively, forms interference detection passage.
The signal of transmitter module exports and is connected with leaky cable A, transmitter module will transmit and be transmitted into leaky cable A, receiver module receives the leakage signal that leaky cable B transmits, the output of receiver module is connected with the input of doppler modular by signalling channel, Doppler's extraction module carries out the extraction of Doppler signal to leakage signal, amplification module A carries out amplification process to the Doppler signal extracted, and the signal after amplifying is sent to message processing module; The output of receiver module is also connected with the input of detection module by interference detection passage, detection module carries out demodulation to leakage signal, amplification module B carries out amplification process to the signal after demodulation, and the restituted signal after amplifying is sent to message processing module, message processing module carries out treatment and analysis to Doppler signal and restituted signal.
Described amplification module is the amplifier of level Four cascade.
Described amplification module is programmable amplifier.
As shown in Figure 2, described Doppler's extraction module comprises frequency mixer, amplifier and phase demodulator, one of one of described frequency mixer input and receiver module exports and is connected, another input of frequency mixer is fed back to export be connected with one of transmitter module, the output of frequency mixer is connected with the input of amplifier, the output of amplifier is connected with the input of phase demodulator, and the output of phase demodulator is connected with the input of amplification module.
As shown in Figure 3, it also comprises local oscillator, and described local oscillator exports to input with one of the frequency mixer of Doppler's extraction module and is connected, and another input of this frequency mixer is connected with the output of receiver module.
As shown in Figure 4, it also comprises power splitter, described power splitter is one-to-two power splitter, the input of one-to-two power splitter is connected with the output of local oscillator, an output of one-to-two power splitter is connected with the input of transmitter module, another of one-to-two power splitter exports to input with one of frequency mixer and is connected, and another input of this frequency mixer is connected with the output of receiver module.
As shown in Figure 5, it also comprises filtration module, and the input of described filtration module is connected with the output of phase demodulator, and the output of filtration module is connected with the input of amplification module.
Described filtration module is narrow band filter or low-pass filter.
It also comprises record storage, and described record storage is connected with message processing module, and the leakage signal of this reception and analysis processing result thereof are sent to record storage and preserve by message processing module, so that host computer extracts historical data.
It also comprises keyboard and display, described keyboard is connected with the input through keyboard of message processing module, can parameters information by keyboard, display is connected with the display translation of message processing module, display display configuration information, analysis processing result and warning message.
It also comprises power module, and described power module is connected with transmitter module, receiver module and message processing module, for it provides power supply.
The utility model sets up local oscillator and power splitter, stable transmit output and local oscillation signal input is provided, by filtering module for filtering off signal disturbing, and Doppler's extraction module is improved, set up phase demodulator, make intrusion detector when receiving and transmitting, even if the phase place of this signal offsets, the invasion signal wave momentum that improvement Doppler extraction module detects can't fluctuate along with phase fluctuation, thus improves stability and the reliability of intrusion detector sensitivity.
The utility model has alarm logging local storage function, when there being alerting signal to produce, first carrying out this locality and storing, then by switching value or bus output information.
Even if do not install receiving host machine owing to adding alarm logging storer user in detector inside, user also can understand warning message by the record consulted above detector, also can send instruction fetch warning message by host computer afterwards, be user-friendly to.
The utility model is a kind of leakage cable intrusion detector that electric pulse disturbs that can identify, interfering channel is added in detector inside, even if detector uses in the environment having electric pulse to disturb, message processing module also can comparing by interfering channel and information channel, differentiation is normal invasion or the warning caused due to electric pulse, thus effectively shielding electric pulse interference, reduce the object of rate of false alarm.
Claims (10)
1. one kind can identify the leakage cable intrusion detector that electric pulse disturbs, it comprises transmitter module, receiver module, Doppler's extraction module, amplification module A and information processing module, it is characterized in that: it also comprises detection module and amplification module B, described receiver module is connected with Doppler's extraction module and amplification module A successively, form signalling channel, receiver module is connected with detection module and amplification module B successively, forms interference detection passage;
The signal of transmitter module exports and is connected with leaky cable A, transmitter module will transmit and be transmitted into leaky cable A, receiver module receives the leakage signal that leaky cable B transmits, the output of receiver module is connected with the input of doppler modular by signalling channel, Doppler's extraction module carries out the extraction of Doppler signal to leakage signal, amplification module A carries out amplification process to the Doppler signal extracted, and the signal after amplifying is sent to message processing module; The output of receiver module is also connected with the input of detection module by interference detection passage, detection module carries out demodulation to leakage signal, amplification module B carries out amplification process to the signal after demodulation, and the restituted signal after amplifying is sent to message processing module, message processing module carries out treatment and analysis to Doppler signal and restituted signal.
2. a kind of leakage cable intrusion detector that electric pulse disturbs that can identify according to claim 1, it is characterized in that: described Doppler's extraction module comprises frequency mixer, amplifier and phase demodulator, one of one of described frequency mixer input and receiver module exports and is connected, another input of frequency mixer is fed back to export be connected with one of transmitter module, the output of frequency mixer is connected with the input of amplifier, the output of amplifier is connected with the input of phase demodulator, and the output of phase demodulator is connected with the input of amplification module.
3. a kind of leakage cable intrusion detector that electric pulse disturbs that can identify according to claim 1, is characterized in that: described amplification module is the amplifier of level Four cascade.
4. a kind of leakage cable intrusion detector that electric pulse disturbs that can identify according to claim 1, is characterized in that: described amplification module is programmable amplifier.
5. a kind of leakage cable intrusion detector that electric pulse disturbs that can identify according to claim 1, it is characterized in that: it also comprises local oscillator, described local oscillator exports to input with one of the frequency mixer of Doppler's extraction module and is connected, and another input of this frequency mixer is connected with the output of receiver module.
6. a kind of leakage cable intrusion detector that electric pulse disturbs that can identify according to claim 1, it is characterized in that: it also comprises power splitter, described power splitter is one-to-two power splitter, the input of one-to-two power splitter is connected with the output of local oscillator, an output of one-to-two power splitter is connected with the input of transmitter module, another of one-to-two power splitter exports to input with one of frequency mixer and is connected, and another input of this frequency mixer is connected with the output of receiver module.
7. a kind of leakage cable intrusion detector that electric pulse disturbs that can identify according to claim 1, it is characterized in that: it also comprises filtration module, the input of described filtration module is connected with the output of phase demodulator, and the output of filtration module is connected with the input of amplification module.
8. a kind of leakage cable intrusion detector that electric pulse disturbs that can identify according to claim 1, it is characterized in that: it also comprises keyboard and display, described keyboard is connected with the input through keyboard of message processing module, can parameters information by keyboard, display is connected with the display translation of message processing module, display display configuration information, analysis processing result and warning message.
9. a kind of leakage cable intrusion detector that electric pulse disturbs that can identify according to claim 1, it is characterized in that: it also comprises power module, described power module is connected with transmitter module, receiver module and message processing module, for it provides power supply.
10. a kind of leakage cable intrusion detector that electric pulse disturbs that can identify according to claim 1, it is characterized in that: it also comprises record storage, described record storage is connected with message processing module, the leakage signal of this reception and analysis processing result thereof are sent to record storage and preserve by message processing module, so that host computer extracts historical data.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420527856.XU CN204044957U (en) | 2014-09-15 | 2014-09-15 | A kind ofly can identify the leakage cable intrusion detector that electric pulse disturbs |
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| CN201420527856.XU CN204044957U (en) | 2014-09-15 | 2014-09-15 | A kind ofly can identify the leakage cable intrusion detector that electric pulse disturbs |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104700544A (en) * | 2015-03-24 | 2015-06-10 | 北京科技大学 | Method and system for acquiring intrusion information of security prevention Things of Internet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104700544A (en) * | 2015-03-24 | 2015-06-10 | 北京科技大学 | Method and system for acquiring intrusion information of security prevention Things of Internet |
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