CN108109306A - A kind of low-power-consumption infrared and image composite sensing detection device - Google Patents
A kind of low-power-consumption infrared and image composite sensing detection device Download PDFInfo
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- CN108109306A CN108109306A CN201711438799.2A CN201711438799A CN108109306A CN 108109306 A CN108109306 A CN 108109306A CN 201711438799 A CN201711438799 A CN 201711438799A CN 108109306 A CN108109306 A CN 108109306A
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- 230000033001 locomotion Effects 0.000 claims abstract description 11
- 230000005616 pyroelectricity Effects 0.000 claims description 11
- 230000003321 amplification Effects 0.000 claims description 9
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 9
- 230000005855 radiation Effects 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
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- 238000005516 engineering process Methods 0.000 description 4
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- 238000010586 diagram Methods 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
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Classifications
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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
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/19—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems
- G08B13/191—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems using pyroelectric sensor means
-
- 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
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
- G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
- G08B13/19602—Image analysis to detect motion of the intruder, e.g. by frame subtraction
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/30—Transforming light or analogous information into electric information
- H04N5/33—Transforming infrared radiation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
- Geophysics And Detection Of Objects (AREA)
- Closed-Circuit Television Systems (AREA)
Abstract
The invention discloses a kind of low-power-consumption infrareds and image composite sensing detection device, it is in earth horizon sensor system for the monitoring to line-like areas such as road, bridges, to the moving object detection by search coverage, and provide target direction of motion, quantity and image information.It is mainly by passive infrared sensor, white light/thermal camera, signal processing module, image capture module, wireless transport module, comprehensive power module and battery composition.When in investigative range without target, device is in low-power consumption operating mode on duty, once there is target in investigative range, each module of device starts work, carries out image capture, and detects the direction of motion and quantity of target, and after forming detection data, rearward transmitting reports.When target disappears in investigative range, device is transferred to low-power consumption operating mode on duty again.The present invention has the characteristics that easy laying, low-power consumption, round-the-clock, target direction of motion automatic identification, automated graphics capture.
Description
Technical field
The present invention relates to a kind of low-power consumption passive infrared sensors for earth horizon sensor system and imaging sensor to combine
Composite sensing detection device.
Background technology
Passive infrared sensor is a kind of passive detection device of passive type, and there is simple in structure, technical performance to stablize, low
Power consumption, convenient for motor-driven laying, good concealment the features such as.It is mainly used as road strategic point invasion prison in ground transaucer system
Depending on being gathered according to the heat radiation energy of target by optical system on infrared energy converter, electricity being received and converted by energy converter
Signal amplifies with processing to detect target.Pair of the intrinsic heat radiation of its detectability and performance between by intrusion target and background
Than degree and its contrast with the influence of fading of propagation path between target and sensor.It is former using CFAR detection during signal processing
Then.
Imaging sensor can directly provide the image information of search coverage, and image information content is enriched, contains much information and directly
It sees.After including imaging sensor in sensing system, it is used cooperatively, is complementary to one another with other non-image type sensors, it can be notable
The accuracy of alarm is improved, the information of acquisition has the characteristics that definite, directly perceived, specifically lively, true and efficient.But image sensing
Device there are volume mass, power consumption is larger the problem of；Its large capacity image procossing, storage and transmission problem for obtaining need to solve.
Infrared sensor and image sensor technologies are combined it is therefore desirable to study, realize a kind of low-power-consumption infrared figure
As composite sensing detection device, to make up the deficiency that each sensor independently uses.
The content of the invention
Technical problem underlying to be solved by this invention is exactly to avoid the shortcoming occurred in above-mentioned background technology, and is carried
For a kind of low-power-consumption infrared for earth horizon sensor system and image composite sensing detection device.
The object of the present invention is achieved like this：
A kind of low-power-consumption infrared and image composite sensing detection device, including：White light/thermal camera, signal processing mould
Block, image capture module, wireless transport module, passive infrared sensor, comprehensive power module and battery；
Passive infrared sensor is used to detect intrusion target by the infra-red radiation of target, the infrared letter that target is sent
Number electric signal is converted to, and two-way is divided to export to signal processing module electric signal；
White light/thermal camera carries out the acquisition of target image, exports analog picture signal for carrying out round-the-clock camera shooting
To image capture module；
Image capture module is used to capture the simulation drawing of white light/infrared camera scan under the control of signal processing module
Picture carries out the compressed encoding based on frame to the analog image captured, compressed image is exported to signal processing module；
When signal processing module is used in investigative range without target, whole device is made to work in low-power consumption pattern on duty；
When receiving the electric signal of passive infrared sensor output, control comprehensive power module is to image capture module and wireless transmission
Module powers on, and controls the analog image of image capture module capture white light/infrared camera scan；It is additionally operable to passive infrared
The two path signal of sensor input carries out A/D conversions respectively, and carries out target detection, target direction of motion judgement and target meter
Number processing, the handling result of electric signal and the compressed image of image capture module are exported to wireless transport module；Work as detection
In the range of target disappear after comprehensive power module is controlled to be powered off to image capture module and wireless transport module, be transferred to device low
Power consumption pattern on duty.
Wireless transport module is used for the handling result of electric signal and image capture module pressure of signal processing module output
Image after contracting is exported by antenna；
Comprehensive power module and battery are used to be powered to modules in device.
Wherein, passive infrared sensor is put including Fresnel lens, double base pyroelectricity sensing circuit, the first ultra-low frequency signal
Big cascade circuit and the second ultra-low frequency signal amplification cascade circuit；Fresnel lens is according to target surface temperature with respect to ambient temperature
The temperature difference to being detected by the target of visual field, by the infrared signal of the target detected export to double base pyroelectricity sense electricity
Road；Infrared signal is converted to electric signal by double base pyroelectricity sensing circuit, and is exported respectively to the first ultra-low frequency signal amplifying stage
Join circuit and the second ultra-low frequency signal amplification cascade circuit；First ultra-low frequency signal amplifies cascade circuit and the second ultra-low frequency signal
Amplification cascade circuit is exported after the electric signal of input is amplified filtering respectively to signal processing module.
The present invention has the following advantages that compared with background technology：
(1) in a manner that passive infrared detection and image detection are combined, the target knot of infrared acquisition can be provided simultaneously
Fruit information and the target image information of image detection capture.The two is confirmed each other, improves the confidence level of target acquistion.
(2) using low power dissipation design, device power consumption under state on duty is extremely low, when detecting target under state on duty
Start other modules such as video camera and Image Acquisition so that device can long-term work under battery powered.
(3) video camera is equipped with light sensor, white light and infrared camera, being capable of round-the-clock work.
Description of the drawings
Fig. 1 is present system composition frame chart；
Fig. 2 is passive infrared sensor composition frame chart；
Fig. 3 is work flow diagram of the present invention.
Specific embodiment
Embodiment of the present invention is described in detail below in conjunction with the accompanying drawings：This embodiment is on the premise of the present invention
Implemented, give detailed implementation process and specific operating process, but protection scope of the present invention is not limited to following realities
Apply example.
Fig. 1 is the block diagram of system of the present invention, is had to ground moving object, as personnel, wheeled vehicle, creeper truck it is remote
Distance measurement ability has automatic decision target direction of motion and destination number, and captures the function of target image.System is by nothing
Source infrared sensor, white light/thermal camera, signal processing module, image capture module, wireless transport module, comprehensive power
Module and battery composition.Device is battery powered, and the portability of projecting device, mobility, quickly lay function at low-power consumption.Its
In：Signal processing module is the core of whole system, to complete low power consumption control and digital signal processing function.
Passive infrared sensor is used to detect intrusion target by the infra-red radiation of target, the infrared letter that target is sent
Number electric signal is converted to, and two-way is divided to export to signal processing module electric signal；
White light/thermal camera carries out the acquisition of target image, exports analog picture signal for carrying out round-the-clock camera shooting
To image capture module；White light/thermal camera of institute's beam of the present invention can carry out round-the-clock camera shooting, including light detectors, in vain
Each one of light video camera head, infrared camera.Light detectors on video camera can automatic sensing bright and dark light information, to select
White light or infrared camera work are enabled, there is round-the-clock ability to work, no matter daytime or night can effectively export simulation
Image.
Image capture module is used to capture the simulation drawing of white light/infrared camera scan under the control of signal processing module
Picture carries out the compressed encoding based on frame to the analog image captured, compressed image is exported to signal processing module；
Signal processing module is responsible for the control of each unit modular power source.Under pattern on duty, signal processing module control synthesis
Power module is only to passive infrared sensor, signal processing module circuit on duty and white light/thermal camera power-up, remaining module
Power supply is turned off, and system operating current is minimum, in low power consumpting state.Under pattern on duty, timing sends system heart-throb information,
Frequency is usually 1 times/day, only controls each module Power-On Self-Test in delivery time and sends out self-detection result by wireless transport module
It is shot out.Just start remaining each module when there is target in investigative range to work on power, target be transferred to automatically again after disappearing it is on duty,
Ensure system low-power consumption operation, can work long hours in the case of battery powered.
It is specific as follows：When signal processing module is used in investigative range without target, whole device is made to work in low-power consumption
Pattern on duty；When receiving the electric signal of passive infrared sensor output, control comprehensive power module is to image capture module
It is powered on wireless transport module, and controls the analog image of image capture module white light/infrared camera scan；It is additionally operable to nothing
The two path signal of source infrared sensor input carries out A/D conversions respectively, and carry out target detection, target direction of motion judgement and
Object count processing, the handling result of electric signal and the compressed image of image capture module are exported to wireless transport module；
After target disappears in investigative range comprehensive power module is controlled to be powered off to image capture module and wireless transport module, make device
It is transferred to low-power consumption pattern on duty.Wherein, algorithm of target detection calculates the infrared signal amplitude of acquisition, when amplitude is more than predetermined threshold
When, then detect an object event.Predetermined detection thresholding is dynamically adjusted according to detector output signal-to-noise ratio, to maintain to examine
The constant false alarm rate of survey.And according to width, interval time and amplitude changing rule during pulse, verify whether to meet target from entrance
To the process for exiting detection viewing field, echo signal is confirmed the validity, inhibits noise/interference and rejects false-alarm.Target direction of motion differentiates
With it is as follows by object count algorithm process.For the direction of motion of target in passive infrared detection viewing field, according to effective target
The positive negative pulse stuffing of signal differentiates the sequencing of triggering and interval.Successive triggering times be target by number.
Wireless transport module is used for the handling result of electric signal and image capture module pressure of signal processing module output
Image after contracting is exported by antenna；
Comprehensive power module of the present invention completes power supply DC/DC conversion, provides the various voltages needed for system, and carries
Voltage supplied output control terminal being powered on and being powered off by signal processing module control each unit, carries out comprehensive power control.
Fig. 2 is the composition frame chart of passive infrared sensor, and passive infrared sensor of the present invention is a kind of to use quilt
Dynamic formula passive infrared sensitive detection parts detect invasion personnel, vehicle and its relative sensors direction of motion and to passing through for designing
The passive detection equipment of the object count of its visual field, mainly by optical system, pyroelectricity energy converter and signal amplification circuit filter
Three parts form.Two discrete visual fields are provided using the simple lens head of double base pyroelectricity energy converter arranged side by side, when target is by regarding
During field, according to the temperature difference of the target surface temperature with respect to ambient temperature, electric signal is converted by infrared double base energy converter, through putting
Greatly, signal processing module is sent in filtering.By the judgment criterion for being used as intrusion detection to the detection of the temperature difference.
Specifically include Fresnel lens, double base pyroelectricity sensing circuit, the first ultra-low frequency signal amplification cascade circuit and the
Two ultra-low frequency signals amplify cascade circuit；Fresnel lens is according to the temperature difference of the target surface temperature with respect to ambient temperature to by regarding
The target of field is detected, and the infrared signal of the target detected is exported to double base pyroelectricity sensing circuit；Double base pyroelectricity
Infrared signal is converted to electric signal by sensing circuit, and is exported respectively and amplified cascade circuit to the first ultra-low frequency signal and the second surpass
Low frequency signal amplifies cascade circuit；First ultra-low frequency signal amplifies cascade circuit and the second ultra-low frequency signal amplification cascade circuit point
It is exported after the electric signal of input is not amplified filtering to signal processing module.
Fig. 3 be device work flow diagram, low-power-consumption infrared image composite sensing detection device workflow of the present invention
Journey is as follows：
1st, passive infrared sensor powers up, and signal processing module works in state on duty, and the infrared signal of acquisition is carried out
Processing judges target appearance is whether there is in investigative range.
Once the 2nd, find there is i.e. each module of target to work on power in investigative range.Infrared signal is handled, to target
The direction of motion and quantity make decisions, while start image capture module and the image of camera acquisition captured, to catching
The image obtained is compressed coding.
3rd, after the completion of this signal processing, powered on to wireless transport module, the result of detection number that infrared signal processing is formed
Launch according to compressed image data via wireless transport module, rearward report；It is closed after being sent completely wireless
Transport module power supply.
4th, whether still there is moving target in detection range, if still having target by going to step 2 again to echo signal
It is handled.If target disappears in investigative range, start 20 seconds timers.
If the 5, there is target appearance in timing in investigative range again, go to step 2 and echo signal handled,
It is carried out at the same time image capture.If occurring again without target in timing, the modular power sources such as video camera and Image Acquisition are closed.
6th, device is transferred to operating mode on duty again, monitors target appearance is whether there is in investigative range.
Claims (2)
1. a kind of low-power-consumption infrared and image composite sensing detection device, including：White light/thermal camera, signal processing module,
Image capture module, wireless transport module, comprehensive power module and battery, it is characterised in that further include passive infrared sensor；
Passive infrared sensor is used to detect intrusion target by the infra-red radiation of target, and the infrared signal that target is sent turns
Electric signal is changed to, and two-way is divided to export to signal processing module electric signal；
White light/thermal camera carries out the acquisition of target image, output analog picture signal to figure for carrying out round-the-clock camera shooting
As acquisition module；
Image capture module is used to capture the analog image of white light/infrared camera scan under the control of signal processing module,
Compressed encoding based on frame is carried out to the analog image captured, compressed image is exported to signal processing module；
When signal processing module is used in investigative range without target, whole device is made to work in low-power consumption pattern on duty；It is connecing
When receiving the electric signal of passive infrared sensor output, control comprehensive power module is to image capture module and wireless transport module
It powers on, and controls the analog image of image capture module capture white light/infrared camera scan；It is additionally operable to sense passive infrared
The two path signal of device input carries out A/D conversions respectively, and carries out at target detection, target direction of motion judgement and object count
Reason, and the handling result of electric signal and the compressed image of image capture module are exported to wireless transport module；It is additionally operable to
After target disappears in investigative range comprehensive power module is controlled to be powered off to image capture module and wireless transport module, turn device
Enter low-power consumption pattern on duty；
Wireless transport module is used for will be after the handling result of the electric signal of signal processing module output and image capture module compression
Image exported by antenna；
Comprehensive power module and battery are used to be powered to modules in device.
2. a kind of low-power-consumption infrared according to claim 1 and image composite sensing detection device, which is characterized in that passive
Infrared sensor includes Fresnel lens, double base pyroelectricity sensing circuit, the first ultra-low frequency signal amplification cascade circuit and second
Ultra-low frequency signal amplifies cascade circuit；Fresnel lens is according to the temperature difference of the target surface temperature with respect to ambient temperature to passing through visual field
Target detected, the infrared signal of the target detected is exported to double base pyroelectricity sensing circuit；Double base pyroelectricity passes
Infrared signal is converted to electric signal by inductive circuit, and is exported respectively ultralow to the first ultra-low frequency signal amplification cascade circuit and second
Frequency amplified signal level joins circuit；First ultra-low frequency signal amplifies cascade circuit and the second ultra-low frequency signal amplification cascade circuit difference
It is exported after the electric signal of input is amplified filtering to signal processing module.
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| CN201711438799.2A CN108109306A (en) | 2017-12-27 | 2017-12-27 | A kind of low-power-consumption infrared and image composite sensing detection device |
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Cited By (4)
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| CN112050952A (en) * | 2020-09-11 | 2020-12-08 | 宁波视睿迪光电有限公司 | Induction device, electronic equipment and induction method |
| CN112067146A (en) * | 2020-07-29 | 2020-12-11 | 深圳海翼智新科技有限公司 | PIR sensor detection method, device and system and computer storage medium |
| CN113706806A (en) * | 2021-08-24 | 2021-11-26 | 中国科学院上海微系统与信息技术研究所 | Passive infrared low-power consumption is from circuit on duty |
| CN116580828A (en) * | 2023-05-16 | 2023-08-11 | 深圳弗瑞奇科技有限公司 | Visual monitoring method for full-automatic induction identification of cat health |
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Application publication date: 20180601 |