CN105157816A - Wireless vibration target classification and recognition device - Google Patents
Wireless vibration target classification and recognition device Download PDFInfo
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- CN105157816A CN105157816A CN201510508396.5A CN201510508396A CN105157816A CN 105157816 A CN105157816 A CN 105157816A CN 201510508396 A CN201510508396 A CN 201510508396A CN 105157816 A CN105157816 A CN 105157816A
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Abstract
The invention relates to a wireless vibration target classification and recognition device and belongs to the wireless sensor technical field. The objective of the invention is to solve the problem of incapability of a vibration sensing device to perform long-term and low-power consumption work under external power supply-free conditions such as an outdoor condition. The wireless vibration target classification and recognition device of the invention includes a shell, an upper cover, a hollow cone body, a vibration sensor, an angle sensor, a vibration sensor bearing component, a circuit board, a power source and an antenna; the shell is cylinder-shaped; an opening at the upper end of the shell is provided with an upper cover; the middle of the lower end surface of the shell is connected with a large opening at the upper end of the hollow cone body; the inner cavity of the shell is communicated with the inner cavity of the hollow cone body; the angle sensor is arranged at the inner wall of the hollow cone body; the arc-shaped head end of the vibration sensor bearing component is fixed to the side wall of the shell; the suspended tail end of the vibration sensor bearing component is provided with the vibration sensor; the circuit board is arranged in the inner cavity of the shell; the circuit board is parallel to the upper cover and is connected with the upper cover through a plurality of connecting columns; the circuit board is provided with the antenna; the transmitting end of the antenna extends out from the shell through a through hole at the center of the upper cover.
Description
Technical field
The present invention relates to a kind of unattended vibration signal recognition device, belong to technical field of wireless.
Background technology
Local limit of the prohibited area and border and neighbouring personnel thereof and movable vehicle are monitored, the major measure taked at present lays multiple sensors to be embedded in for monitoring on area or thoroughfare in advance snugly, detect incessantly round the clock, monitor goal activities around, these sensors adopt wired mode to be connected with disposal system, wiring is complicated, easy introducing interference, disguised poor, be subject to destruction, monitoring range is large by restriction degree, the sensor raw signals of One's name is legion imports system host and processes simultaneously, system burden is large, in addition, also there is alert rate by mistake high, the problems such as overall power is large, ability to work under the complex environment unmanned conditions such as extreme influence field.
People adopt wireless mode to solve the problem, at present in more existing wireless vibration sensor application, general wireless sensor node is mostly directly adopted to carry out secondary development, install vibration transducer additional and realize corresponding function, only can realize General Oscillation input, there is following problem: 1, level of integrated system is low, between each functional module, coupling is poor, thus cause volume comparatively large, disguised poor; 2, detection range is near, and false alarm rate is high; 3, power consumption is large, is generally applied in short-term continuous shaking signal testing, can not meets long-term unmanned job requirement, for meeting practical application request, needs the low-power consumption environment target monitoring technology based on radio communication to conduct a research work.
Summary of the invention
The present invention seeks to can not the work problem of low-power consumption for a long time under field etc. is without externally fed condition in order to solve vibration sensing device, provides a kind of wireless vibration target classification recognition device.Realize monitoring and Classification and Identification the personnel within the scope of certain distance, movable vehicle behavior under unattended operation environment.
Wireless vibration target classification recognition device of the present invention, it comprises housing, upper cover, hollow centrum, vibrating perceptron, angular transducer, vibrating perceptron bearing part, circuit board, power supply and antenna;
Housing is drum-shaped, and the upper end open of housing is provided with upper cover, is connected in the middle part of the lower surface of housing with the large mouth in the upper end of hollow centrum, and the inner space of the inner chamber of housing and hollow centrum; Angular transducer is arranged on the madial wall of hollow centrum;
The arc head end of vibrating perceptron bearing part is fixed on the sidewall of housing, and the unsettled tail end of vibrating perceptron bearing part is provided with vibrating perceptron;
Circuit board is arranged on the inner chamber of housing, and circuit board and upper cover be arranged in parallel, and is connected by several joint pins;
Circuit board is provided with antenna, and the transmitting terminal of antenna extend out to the outside of housing from the through hole of upper cover circle centre position;
Power supply is arranged in the inner chamber of housing.
Advantage of the present invention: apparatus of the present invention adopt integral structure, improve environmental suitability, dismountable plug-in type centrum is furnished with bottom it, when tested localized ground be top layer comparatively loosen soil time, can aggrandizement apparatus investigation depth, being picked up by vibration signal more sensitively, its plug-in type design simultaneously can make device better be fixed on ground.
Wireless vibration target classification recognition device of the present invention can realize under unmanned condition, ground staff, vehicle movement behavior in certain limit are monitored, achieve low power dissipation design, after tested, this device is under maintenance vibration monitoring condition, within its standby current is stabilized in 30 μ A always, can greatly improve its field survivorship time; It adopts wireless integrated structure design to increase its hidden ability to work, can effectively expand laying scope.
This device can not only be applied in limit, the monitoring of coast defence environmental goals, also can be applicable to the multiaspect such as sentry post, border, airport intrusion prevention simultaneously, has application prospect widely.
At present, apply in practice there is not been reported with this device approximation function product, but this series products demand increases year by year, traditional sensor environment monitoring system technology upgrading replacement demand is urgent, the invention of low-consumption wireless Vibration Targets monitoring device compensate for the vacancy of this respect, if form productive capacity, meets domestic demand simultaneously, also can realize export abroad, create good economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is the structural representation of wireless vibration target classification recognition device of the present invention;
Fig. 2 is the structural representation of vibrating perceptron;
Fig. 3 is the structural representation of vibrating perceptron bearing part, and this figure is the vertical view of this part in Fig. 1;
Fig. 4 is the control principle block diagram of wireless vibration target classification recognition device of the present invention.
Embodiment
Embodiment one: present embodiment is described below in conjunction with Fig. 1, wireless vibration target classification recognition device described in present embodiment, it comprises housing 1, upper cover 2, hollow centrum 3, vibrating perceptron 4, angular transducer 5, vibrating perceptron bearing part 6, circuit board 7, power supply 8 and antenna 9;
Housing 1 is drum-shaped, and the upper end open of housing 1 is provided with upper cover 2, is connected in the middle part of the lower surface of housing 1 with the large mouth in upper end of hollow centrum 3, and the inner space of the inner chamber of housing 1 and hollow centrum 3; Angular transducer 5 is arranged on the madial wall of hollow centrum 3;
The arc head end of vibrating perceptron bearing part 6 is fixed on the sidewall of housing 1, and the unsettled tail end of vibrating perceptron bearing part 6 is provided with vibrating perceptron 4;
Circuit board 7 is arranged on the inner chamber of housing 1, and circuit board 1 and upper cover 1 be arranged in parallel, and is connected by several joint pins;
Circuit board 7 is provided with antenna 9, the transmitting terminal of antenna 9 extend out to the outside of housing 1 from the through hole of upper cover 2 circle centre position;
Power supply 8 is arranged in the inner chamber of housing 1.
Power supply 8 adopts battery to realize.Low temperature resistant, the jumbo lithium of concrete employing sub-sulfonium acyl chlorides battery.
Present embodiment device adopts integrated design, vibrating perceptron 4, circuit board 7, antenna 9, power supply 8, housing 1 are monolithically integrated in one, vibrating perceptron 4 is fixedly mounted in structure lower cavity, fixing centrum is devised in structural base, hollow centrum 3 is plug-in type centrum, when tested localized ground is soil, and can aggrandizement apparatus investigation depth, can be more responsive be picked up by vibration signal, can make device better be fixed on ground simultaneously.Due under the usual environment poor in day water Pingdu of plug-in type use, thus plug-in type centrum inside is furnished with angular transducer 5, and angle measurement participates in vibration calculating, can guarantee that device still accurately can identify target in an inclined state.
Embodiment two: present embodiment is described below in conjunction with Fig. 2, present embodiment is described further embodiment one, and vibrating perceptron 4 comprises sensor housing 4-1, insulating barrier 4-2, fairlead 4-3, horizontal magnet steel 4-4, vertical magnet steel 4-5, two groups of horizontal coil 4-6, two groups of vertical coil 4-7, two horizontal spring 4-8 and two uprighting spring 4-9;
Sensor housing 4-1 is divided into upper and lower two parts by insulating barrier 4-2, and the two have a common boundary outside sensor housing 4-1 sidewall on be provided with fairlead 4-3; The first half is horizontal vibration monitoring chamber, and the latter half is vertical vibration monitoring chamber;
Horizontal vibration monitoring is provided with horizontal magnet steel 4-4 in chamber, and described horizontal magnet steel about 4-4 is respectively connected on the sidewall of housing left and right by a horizontal spring 4-8; Horizontal magnet steel 4-4 respectively arranges one group of horizontal coil 4-6 up and down, often organizes horizontal coil 4-6 and fixes by coil carrying part;
Vertical vibration monitoring is provided with vertical magnet steel 4-5 in chamber, and described vertical magnet steel 4-5 is respectively connected on the top and bottom sidewall in vertical vibration monitoring chamber by a uprighting spring 4-9 up and down; The left and right of vertical magnet steel 4-5 respectively arranges one group of vertical coil 4-7, often organizes vertical coil 4-7 and fixes by coil carrying part.
The sensitive element that vibrating perceptron 4 adopts sandwich structure electromagnetic vibration collector to pick up as vibration signal, mainly comprises coil, lower coil (two groups of horizontal coil 4-6) and the middle vibration pick-up structure be made up of silicon-base plane nickel spring (two horizontal spring 4-8) and permanent magnet (horizontal magnet steel 4-4) in horizontal vibration monitoring chamber.Similar in vertical vibration monitoring chamber, just changes vertical direction into, the vibratory output of present embodiment vibrating perceptron 4 energy perception xy both direction.
For horizontal vibration monitoring, mucosal structure is vibrated that its concrete perception is described, when there being extraneous vibration to be applied in substrate at vertical coil in-plane, permanent magnet-spring vibration system can produce forced vibration, cause, between permanent magnet and coil, relative motion occurs, the magnetic flux in coil is caused to change, all can produce induction electromotive force in upper and lower coil, by upper and lower coils connected in series is got up, significantly can increase output performance.
Embodiment three: present embodiment is described below in conjunction with Fig. 3, present embodiment is described further embodiment one, vibrating perceptron bearing part 6 comprises elastic beam 6-1, arc head end 6-2 and mounting hole 6-3, the head end of elastic beam 6-1 is fixedly connected with arc head end 6-2, arc head end 6-2 level screws in the fixed part of housing 1 sidewall, adopts arc latch snap fit to be connected with housing 1 sidewall; Elastic beam 6-1 and the integrated elastic beam structure of arc head end 6-2;
The tail end of elastic beam 6-1 is provided with mounting hole 6-3, and described mounting hole 6-3 is through hole penetrating up and down, and for placing vibrating perceptron 4, the center of circle of this through hole is positioned on the axial line of housing 1.
Vibrating perceptron bearing part 6 described in present embodiment is a kind of integrated elastic girder constructions, adopt arc latch clamping (juncture of horizontal slip ensure that rotatable installation in little space) with housing 1 connected mode, tail end and housing 1 center of circle overlapping positions of its beam are provided with vibrating perceptron 4.When occurred level (or vertical) direction vibration, magnet steel slide block is occurred level (or vertical) motion under the acting in conjunction of elastic beam with spring, and cutting magnetic induction line produces electromotive force, direct voltage output signal.Because vibrating perceptron bearing part 6 is elastic components, when vibration occurs, with vibration deformation, the accuracy of detection of vibrating perceptron 4 is not affected.
Embodiment four: present embodiment is described below in conjunction with Fig. 4, present embodiment is described further embodiment one, integrated pre-judging processor 7-1, communication processor 7-2, low-power consumption programmed switch 7-3, data-carrier store 7-4, wireless communication unit 7-5 and collecting unit on circuit board 7;
Power supply 8 provides continuous working power supply for pre-judging processor 7-1;
Power supply 8 is communication processor 7-2 selectively power by low-power consumption programmed switch 7-3, and on off state is determined by pre-judging processor 7-1;
Power supply 8 is that collecting unit is powered continuously by low-power consumption programmed switch 7-3; Collecting unit involving vibrations signal condition unit 7-6, vibration data converting unit 7-7, angle signal conditioning unit 7-8 and angle-data converting unit 7-9;
The vibration signal output terminal of vibrating perceptron 4 is connected with the input end of vibration signal conditioning unit 7-6, the output terminal of vibration signal conditioning unit 7-6 is connected with the input end of analog signal of vibration data converting unit 7-7, and the digital signal output end of vibration data converting unit 7-7 is connected with the vibration signal input end of pre-judging processor 7-1;
The angle signal output terminal of angular transducer 5 is connected with the input end of angle signal conditioning unit 7-8, the output terminal of angle signal conditioning unit 7-8 is connected with the input end of analog signal of angle-data converting unit 7-9, and the digital signal output end of angle-data converting unit 7-9 is connected with the angle signal input end of pre-judging processor 7-1;
The data of pre-judging processor 7-1 store end and are connected with the first data input/output terminal of data-carrier store 7-4;
The data of communication processor 7-2 store end and are connected with the second data input/output terminal of data-carrier store 7-4;
The data communication end of pre-judging processor 7-1 is connected with the data communication end of communication processor 7-2;
The communication switch instruction of pre-judging processor 7-1 is connected with the command input of low-power consumption programmed switch 7-3; The communication switch instruction output end of low-power consumption programmed switch 7-3 is connected with the communication switch command input of communication processor 7-2, the abnormal data output terminal of communication processor 7-2 is connected with the input end of wireless communication unit 7-5, and abnormal data is sent by antenna 9.
Pre-judging processor 7-1 is low power processor.
Principle of work:
Power supply provides uninterruptable power for pre-judging processor 7-1, and pre-judging processor 7-1 is low power processor, can not significantly electricity consumption.Consumer is divided into two parts by low-power consumption programmed switch 7-3 by pre-judging processor 7-1, for collecting unit is powered continuously, and the communication function relatively taking electricity is prohibited, only have when abnormal data being detected, just control the power supply that low-power consumption programmed switch 7-3 opens supply communication processor 7-2, start communication function, abnormal data is sent to command centre.This has saved electric energy to a great extent.
Ground moving target is as Walking People, driving vehicle etc., and the process of its motion is exactly apply certain excitation to ground.The lower ground vibration signal produced of terrain object excitation depends primarily on geologic condition, the motion state of target and the distance of target.When vibration source is positioned at ground surface, Rayleigh waves is the main waveform of ground vibration detection vibration source, accounts for the overwhelming majority of energy, and it meets measurement device echo signal and requires it is surface signal, and will have the requirement of certain propagation distance.Device adopts electromagnetic vibration perceptron 4 as the sensitive element of vibration signal pickup, and pickup vibration signal is converted into analog quantity.In device pickup particular range, moving target is to the vibrational excitation signal on ground, by signal condition and amplifying circuit process, angle signal is together sent in pre-judging processor 1 simultaneously and carry out processing, analyze, calculate, and store data in data-carrier store 7-4, when anticipation data exception, open communication processor 7-2 again, wirelessly testing result is outwards transmitted, design special vibration signal characteristics extraction and improve target recognition accuracy with classification and identification algorithm, realize the moving target monitoring of unmanned work, low alert rate, high discrimination by mistake.
Device circuit part adopts dual processor architecture design, two processor adopts super low-power consumption microcontroller, specifically divide the work according to Processing tasks difference, need in the device course of work to carry out acquisition and processing to pickoff signals, and operation characteristic is extracted and classification and identification algorithm, also will realize the networking data communication function of power management and complexity, by the design of dual processor framework, improve device work efficiency, meet device work multitasking requirement.Wherein pre-judging processor 7-1 is responsible for plant running process control and data sampling and processing; Communication processor 7-2 is responsible for the operation of wireless communication protocol, completes the functions such as networking, synchronous, data transmit-receive; Exchanges data is carried out by high-speed interface between pre-judging processor 7-1 and communication processor 7-2.
Device adopts unmanned working method, and it is the content of key design not having the lasting ability to work under externally fed condition, requires to have carried out specific design at circuit and software section for low-power consumption.Switched-mode power supply design is adopted at circuit part, the functional modules such as the signals collecting in circuit, conversion, process, storage, communication and duty thereof are divided different interval, when device is operated in different interval, its energy expense has significant change, pre-judging processor 7-1 adopts timing wake-up design, according to mission requirements, controlled the power supply of other each operation intervals by low-power consumption analog switch, cut off the power supply of not operation functional module, reduce device power consumption.
The testing and control flow process of device adopts " streamline " design philosophy, by the running status that flowsheet simulation is different, temporally switching device shifter task run in turn, each running status only opens the power supply of corresponding hardware function, other partial power are turned off, thus realize least in power-consuming.
It is that step puts on ground to personnel when walking about is pulse excitation that device gathers vibration signal concrete manifestation, the excitation that when vehicle, tank are advanced, wheel, crawler belt apply is multifrequency steady stimulation, and the distance time to time change between vibration source and vibrating perceptron, in time domain, obviously do not distinguish between moving vehicle, but between people and the time domain waveform of moving vehicle, have obvious difference.On frequency domain, utilize power spectrum characteristic, be no matter the vibration signal of people or vehicle, respective characteristic of correspondence can be found.By time-domain and frequency-domain two aspects, Analysis and judgments is carried out, realize target discriminator to acquisition signal.The amplitude of signal and the distance between target and vibrating perceptron 4 closely related, therefore threshold value just can not be set as fixed value, and should correspondingly float with signal, rule of thumb be provided with 39.86% to be multiplied with basic threshold value as scale factor, as zero passage characteristic threshold, improve antijamming capability, by calculated zero Numerical Implementation personnel, vehicle classification, the overlapping method of average of weighting is adopted to carry out power spectrumanalysis again, in order to ensure that obtained spectrum is Asymptotic upbiased estimation, the sample segmentation adopting 2:1 window to cover is with average, realize Power estimation variance minimum, power spectrum is equally divided into ten sections, by the variance in the peak value region of every section and average power spectrum signature, put into neural network and carry out target identification.In addition, also add power function regulatory factor in the algorithm, improve e-learning efficiency, and utilize the renewal amount of previous moment to regulate weight and threshold value, greatly improve the speed of convergence of network.
Claims (6)
1. wireless vibration target classification recognition device, it is characterized in that, it comprises housing (1), upper cover (2), hollow centrum (3), vibrating perceptron (4), angular transducer (5), vibrating perceptron bearing part (6), circuit board (7), power supply (8) and antenna (9);
Housing (1) is drum-shaped, the upper end open of housing (1) is provided with upper cover (2), be connected with the large mouth in upper end of hollow centrum (3) in the middle part of the lower surface of housing (1), and the inner space of the inner chamber of housing (1) and hollow centrum (3); Angular transducer (5) is arranged on the madial wall of hollow centrum (3);
The arc head end of vibrating perceptron bearing part (6) is fixed on the sidewall of housing (1), and the unsettled tail end of vibrating perceptron bearing part (6) is provided with vibrating perceptron (4);
Circuit board (7) is arranged on the inner chamber of housing (1), and circuit board 1 and upper cover 1 be arranged in parallel, and is connected by several joint pins;
Circuit board (7) is provided with antenna (9), the transmitting terminal of antenna (9) extend out to the outside of housing (1) from the through hole of upper cover (2) circle centre position;
Power supply (8) is arranged in the inner chamber of housing (1).
2. wireless vibration target classification recognition device according to claim 1, it is characterized in that, vibrating perceptron (4) comprises sensor housing (4-1), insulating barrier (4-2), fairlead (4-3), horizontal magnet steel (4-4), vertical magnet steel (4-5), two groups of horizontal coils (4-6), two groups of vertical coil (4-7), two horizontal springs (4-8) and two uprighting springs (4-9);
Sensor housing (4-1) is divided into upper and lower two parts by insulating barrier (4-2), and the two have a common boundary outside sensor housing (4-1) sidewall on be provided with fairlead (4-3); The first half is horizontal vibration monitoring chamber, and the latter half is vertical vibration monitoring chamber;
Horizontal vibration monitoring is provided with horizontal magnet steel (4-4) in chamber, and described horizontal magnet steel (4-4) left and right is respectively connected on the sidewall of housing left and right by a horizontal spring (4-8); Horizontal magnet steel (4-4) one group of horizontal coil (4-6) is respectively set up and down, often organize horizontal coil (4-6) and fix by coil carrying part;
Vertical vibration monitoring is provided with vertical magnet steel (4-5) in chamber, and described vertical magnet steel (4-5) is respectively connected on the top and bottom sidewall in vertical vibration monitoring chamber by a uprighting spring (4-9) up and down; The left and right of vertical magnet steel (4-5) respectively arranges one group of vertical coil (4-7), often organizes vertical coil (4-7) and fixes by coil carrying part.
3. wireless vibration target classification recognition device according to claim 1, it is characterized in that, vibrating perceptron bearing part (6) comprises elastic beam (6-1), arc head end (6-2) and mounting hole (6-3), the head end of elastic beam (6-1) is fixedly connected with arc head end (6-2), arc head end (6-2) level screws in the fixed part of housing (1) sidewall, adopts arc latch snap fit to be connected with housing (1) sidewall; Elastic beam (6-1) and arc head end (6-2) integrated elastic beam structure;
The tail end of elastic beam (6-1) is provided with mounting hole (6-3), described mounting hole (6-3) is through hole penetrating up and down, and for placing vibrating perceptron (4), the center of circle of this through hole is positioned on the axial line of housing (1).
4. wireless vibration target classification recognition device according to claim 1, is characterized in that, power supply (8) adopts battery to realize.
5. wireless vibration target classification recognition device according to claim 1, it is characterized in that, circuit board (7) upper integrated pre-judging processor (7-1), communication processor (7-2), low-power consumption programmed switch (7-3), data-carrier store (7-4), wireless communication unit (7-5) and collecting unit;
Power supply (8) provides continuous working power supply for pre-judging processor (7-1);
Power supply (8) is communication processor (7-2) selectively power by low-power consumption programmed switch (7-3), and on off state is determined by pre-judging processor (7-1);
Power supply (8) by low-power consumption programmed switch (7-3) for collecting unit is powered continuously; Collecting unit involving vibrations signal condition unit (7-6), vibration data converting unit (7-7), angle signal conditioning unit (7-8) and angle-data converting unit (7-9);
The vibration signal output terminal of vibrating perceptron (4) is connected with the input end of vibration signal conditioning unit (7-6), the output terminal of vibration signal conditioning unit (7-6) is connected with the input end of analog signal of vibration data converting unit (7-7), and the digital signal output end of vibration data converting unit (7-7) is connected with the vibration signal input end of pre-judging processor (7-1);
The angle signal output terminal of angular transducer (5) is connected with the input end of angle signal conditioning unit (7-8), the output terminal of angle signal conditioning unit (7-8) is connected with the input end of analog signal of angle-data converting unit (7-9), and the digital signal output end of angle-data converting unit (7-9) is connected with the angle signal input end of pre-judging processor (7-1);
The data of pre-judging processor (7-1) store end and are connected with the first data input/output terminal of data-carrier store (7-4);
The data of communication processor (7-2) store end and are connected with the second data input/output terminal of data-carrier store (7-4);
The data communication end of pre-judging processor (7-1) is connected with the data communication end of communication processor (7-2);
The communication switch instruction of pre-judging processor (7-1) is connected with the command input of low-power consumption programmed switch (7-3); The communication switch instruction output end of low-power consumption programmed switch (7-3) is connected with the communication switch command input of communication processor (7-2), the abnormal data output terminal of communication processor (7-2) is connected with the input end of wireless communication unit (7-5), and abnormal data is sent by antenna (9).
6. wireless vibration target classification recognition device according to claim 5, it is characterized in that, pre-judging processor (7-1) is low power processor.
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| CN109974838A (en) * | 2019-04-12 | 2019-07-05 | 盐城高玛电子设备有限公司 | A kind of intelligent wireless vibration measurement device of wheel balancer |
| CN112455168A (en) * | 2021-01-27 | 2021-03-09 | 南京泰晟科技实业有限公司 | Signal identification device and method of wireless tire pressure data multi-path antenna |
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| CN105157816B (en) | 2018-08-07 |
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