A kind of remote monitoring systemTechnical field
The present invention relates to laser monitoring technique fields, and in particular to a kind of remote monitoring system.
Background technology：
Currently, in case investigation, it is often necessary to which police passes through the equipment such as Minisize wireless microphone near suspect livesIt is monitored, this kind of mode has in face of some for the anti-suspect for monitoring experience or equipment, usually can be by audiomonitorIt is exposed, to which the effect of monitoring be not achieved；Meanwhile the mode that existing also a kind of infrared laser is monitored, this kind of method areIt is more hidden, but in the prior art, or there are problems that, current infrared laser audiomonitor it is equal in suspicionPeople could nearby detect, and thus be easier to find police by suspect, to reduce the safety of police.
Such as application No. is CN201621068549.5 to disclose a kind of simple laser prison for Fibre Optical Sensor product testDevice for tone frequencies, including laser, phototransistor, signal processing circuit and voice signal output interface, the laser are sent outOn incident light to reverberation, reflected reflected light is received by phototransistor from reverberation；The phototransistorOutput end is connected with the input terminal of signal processing circuit, and the output end of signal processing circuit and voice signal output interfaceInput terminal is connected.Simple laser monitoring assembling structure of this kind for Fibre Optical Sensor product test is simple, easy to use, at low costIt is honest and clean, but can realize to constitute by the principle of laser monitoring technique and technology well and show, it is suitble to Fibre Optical Sensor product to surveyExamination, science popularization are widely used in factory, laboratory, Fibre Optical Sensor product test mechanism, but this kind of monitoring device is easy by human hairExisting, there are prodigious dangerous and limitations.
Such as application No. is CN201610211292.2 to disclose a kind of the laser monitoring device and system of audiomonitor, includingSemiconductor laser transmitter, laser beam expanding optical system, transmitting laser system, closed box, adopts sound at laser eavesdropping emitterDevice, common infrared eavesdropping emitter, laser detector, noise reduction process system, audio output, voice modulation amplifier,Preamplifier, infrared remote receiver, infrared modulated send system and amplification noise processor.The laser of this kind of audiomonitor is monitoredThe advantageous effect of apparatus and system is：The present apparatus combine advantage of the contact Eavesdropping under the more complex environment of short distance andAdvantage of the laser eavesdropping under remote noncontact condition, according to different condition between two kinds of eavesdropping modes free switching.This dressSynthesis is set using common infrared and laser infrared as transmission medium, to make eavesdropping distance reach 1 kilometer, and adapts to contactWith non-contact two kinds of situations, there is very strong practicability, internal system structure stable connection to be suitble to making for criminal investigation and equipment of solving a caseWith, but this kind of monitoring device and system are easy to be found and shield that there are certain danger.
Invention content
The purpose of the present invention is to provide a kind of remote monitoring systems, caused by the prior art above-mentioned multinomial scarce to solveIt falls into.
A kind of remote monitoring system, including remote control station, data transmission link, mobile platform, laser beam emitting device andLaser receiver, the data transmission link, laser beam emitting device and laser receiver are set on mobile platform；It is describedLaser beam emitting device to the objective emission laser of monitoring for being monitored；The laser receiver connects with data transmission linkThe laser for receiving monitored target reflection is connect, while transferring data to data transmission link；The remote control station withData transmission link is wirelessly connected, for receiving and processing data.
Preferably, the laser beam emitting device is connect by three axis autostabiliazer units with mobile platform solid with laser receiverIt is fixed so that the two devices are not disturbed by mobile platform movement, keep the stabilization of itself, while can be filled from steady by three axisThe orientation angle set its irradiation of adjustment and received.
Preferably, it is equipped with silicon photocell in the laser receiver and is swashed according to reflection for receiving laser, silicon photocellThe facula area of light changes situation and carrys out the corresponding corresponding voltage of output.
Preferably, amplification filter unit is connected on the silicon photocell for putting the voltage that silicon photocell generatesGreatly and remove noise.
Preferably, the remote control station is connected with noise reduction unit for being carried out at noise reduction to the voltage signal receivedReason.
Preferably, the remote control station is equipped with loud speaker and is used for the voltage signal after noise reduction by being broadcast with loud speakerIt releases.
The advantage of the invention is that：This kind of remote monitoring system can remote monitoring target sound of speaking, reduce closelySuccess rate that is generated dangerous and improving monitoring when monitoring target.
Description of the drawings
Fig. 1 is the system block diagram of the present invention.
Fig. 2 is the operating process schematic diagram of the present invention.
Specific implementation mode
To make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, with reference toSpecific implementation mode, the present invention is further explained.
As depicted in figs. 1 and 2, a kind of remote monitoring system, including remote control station, data transmission link, mobile platform,Laser beam emitting device and laser receiver, the data transmission link, laser beam emitting device and laser receiver are set toOn mobile platform；The laser beam emitting device to the objective emission laser of monitoring for being monitored；The laser receiverIt connect the laser for receiving monitored target reflection with data transmission link, while transferring data to data transmission link；The remote control station is wirelessly connected with data transmission link, for receiving and processing data.
It is worth noting that, the laser beam emitting device passes through three axis autostabiliazer units and mobile platform with laser receiverIt is connected and fixed so that the two devices are not disturbed by mobile platform movement, keep the stabilization of itself, while can pass through three axisThe orientation angle that autostabiliazer unit adjusts its irradiation and receives.
In the present embodiment, silicon photocell is equipped in the laser receiver for receiving laser, silicon photocell according toThe facula area of reflection laser changes situation and carrys out the corresponding corresponding voltage of output.
In the present embodiment, the voltage that amplification filter unit is used to generate silicon photocell is connected on the silicon photocellIt is amplified and removes noise.
In the present embodiment, the remote control station is connected with noise reduction unit for being dropped to the voltage signal receivedIt makes an uproar processing.
It is used for the voltage signal after noise reduction in addition, the remote control station is equipped with loud speaker by being played with loud speakerOut.
Based on above-mentioned, this kind of remote monitoring system operation principle is：Remote control station is controlled by data transmission link and is movedMoving platform, which reaches, monitors target proximity region, after pass through three axis autostabiliazer units and adjust Laser emission and reception device irradiation and receiveAngle makes laser irradiation on monitoring the positions such as the glass of target proximity, when monitoring target is spoken, the sound wave meeting for generation of speakingIt bumping against on the objects such as glass, the objects such as glass will produce subtle vibrations, and the hot spot of the laser beam of reflection also shakes therewith,Adjust the angle between the receiving plane and light beam of the silicon photocell in laser receiver so that hot spot is radiated at silicon light when shakingCorresponding change occurs for the facula area on battery, changes so as to cause silicon photocell output voltage, then the variationFor weak voltage signals by amplifying and removing noise, obtained voltage signal is transferred back into remote control by data transmission linkIn standing, after carrying out noise reduction process to the signal in remote control station, played back by loud speaker.
As known by the technical knowledge, the present invention can pass through the embodiment party of other essence without departing from its spirit or essential featureCase is realized.Therefore, embodiment disclosed above, all things considered are all merely illustrative, not the only.InstituteHave within the scope of the present invention or is included in the invention in the change being equal in the scope of the present invention.