CN204154391U - A kind of non-refrigerating infrared focal plane out-put dynamic range self-adaptive regulator - Google Patents
A kind of non-refrigerating infrared focal plane out-put dynamic range self-adaptive regulator Download PDFInfo
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- CN204154391U CN204154391U CN201420578384.0U CN201420578384U CN204154391U CN 204154391 U CN204154391 U CN 204154391U CN 201420578384 U CN201420578384 U CN 201420578384U CN 204154391 U CN204154391 U CN 204154391U
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Abstract
A kind of non-refrigerating infrared focal plane out-put dynamic range self-adaptive regulator, it relates to uncooled ir thermal imaging field, it comprises un-cooled infrared focal plane array, A/D converter, imaging analysis module, precision digital potentiometer, ultra-low noise stabilized voltage supply, un-cooled infrared focal plane array is connected with A/D converter, A/D converter is connected with imaging analysis module, imaging analysis module is connected with precision digital potentiometer, precision digital potentiometer is connected with un-cooled infrared focal plane array, and ultra-low noise stabilized voltage supply is connected with precision digital potentiometer; Described A/D converter adopts high-precision a/d converter.Its whole dynamic range adaptation control circuit structure is simple, is applicable to miniaturization, low power dissipation design; Control flexibly, system can carry out Automatic adjusument for the change of target background in real time, does not need manual intervention.
Description
Technical field:
The utility model relates to uncooled ir thermal imaging field, is specifically related to a kind of non-refrigerating infrared focal plane out-put dynamic range self-adaptive regulator.
Background technology:
The dynamic range of infrared focal plane imaging system has characterized the scope of the detectable infrared radiation size of infrared system, reflects the serviceability of system.The system of wide dynamic range can obtain the information of more related ends, is conducive to the analysis to target and identification.Particularly those are used for detecting the infrared imaging system that infrared signature changes greatly target, have wider dynamic range and seem particularly important.If the dynamic range of infrared focal plane imaging system can be improved, or make system automatically adjust its dynamic range according to different situations, the development of infrared focal plane imaging system and application are widely had very important significance.
The flow process of existing uncooled infrared imaging system is: target outputs to imaging analysis module by lens focus to infrared focus plane, numeral after A/D converter, as shown in Figure 1.
The main method of current raising infrared focal plane imaging system dynamic range comprises incident intensity control method and adjustment method integral time.Method one adopts comparatively heavy optical filter wheel, controls the rotation of optical filter wheel with drive motor; And method two adopts two integrators, the switching that switching mechanism controls two integrators be increased.
These are improved one's methods and have that complex structure, degree of regulation are low, the shortcoming of poor real, require further improvement.
Utility model content:
The purpose of this utility model is to provide a kind of non-refrigerating infrared focal plane out-put dynamic range self-adaptive regulator, and its whole dynamic range adaptation control circuit structure is simple, is applicable to miniaturization, low power dissipation design; Control flexibly, system can carry out Automatic adjusument for the change of target background in real time, does not need manual intervention.
In order to solve the problem existing for background technology, the utility model is by the following technical solutions: it comprises un-cooled infrared focal plane array, A/D converter, imaging analysis module, precision digital potentiometer, ultra-low noise stabilized voltage supply, un-cooled infrared focal plane array is connected with A/D converter, A/D converter is connected with imaging analysis module, imaging analysis module is connected with precision digital potentiometer, precision digital potentiometer is connected with un-cooled infrared focal plane array, and ultra-low noise stabilized voltage supply is connected with precision digital potentiometer; Described A/D converter adopts high-precision a/d converter.
Described ultra-low noise stabilized voltage supply is by electric capacity one-electric capacity three C1-C3, resistance one-resistance five R1-R5, accurate reference power supply REF, error amplifier U1, MOS driver U2, depletion type P channel MOS tube Q forms, and accurate reference power supply REF connects with resistance one R1, the other end of resistance one R1 respectively with the feedback signal terminal of error amplifier U1, one end of electric capacity one C1 connects, the reference signal end of error amplifier U1 respectively with one end of electric capacity two C2, one end of resistance two R2, one end of resistance three R3 connects, the other end of electric capacity two C2 respectively with the D pole of depletion type P channel MOS tube Q, the other end of resistance two R2, one end of electric capacity three C3, one end of resistance five R5 connects, and the power output end for being connected with precision digital potentiometer between electric capacity three C3 with resistance five R5, the other end of electric capacity three C3 is connected with resistance four R4, the output terminal of error amplifier U1 is connected with the input end of MOS driver U2, the output terminal of MOS driver U2 is connected with the G pole of depletion type P channel MOS tube Q, the S pole of depletion type P channel MOS tube Q, the VCC end of MOS driver U2, the VCC end of error amplifier U1 is all connected with power input, the other end of electric capacity one C1, the earth terminal of error amplifier U1, the earth terminal of MOS driver U2, the other end of resistance three R3, the other end of resistance four R4, the equal ground connection of the other end of resistance five R5.
The VCC end of described precision digital potentiometer is connected with the power output end of ultra-low noise stabilized voltage supply, and VH, VW, VL end of precision digital potentiometer is all connected with un-cooled infrared focal plane array, precision digital potentiometer
end ground connection, precision digital potentiometer
end is all connected with imaging analysis module.
Principle of the present utility model is: in existing non-refrigerating infrared focal plane imaging circuit, increase ultra-low noise stabilized voltage supply and digital regulation resistance two chips, the adjusting parameter values of carrying out analyzing, target gray extracts, filter forecasting obtains through follow-up imaging processing part in the output signal of common infrared focus plane is input to high-precision digital regulation resistance, converts the V of required voltage value regulation and control focal plane to
eBASAGE.After obtaining target gray feature, calculate the distribution of target gray in the output signal of focal plane, adopt ultra-low noise amplifier combined high precision digital regulation resistance to realize the adjustment of focal plane bias voltage, achieve target real time imagery dynamic range scene adaptive adjustment technology from hardware.
Described precision digital potentiometer has that signal to noise ratio (S/N ratio) is high, dividing potential drop precision is high, effect of software programmable.
Described ultra-low noise stabilized voltage supply has the effects such as burning voltage, multifunctional comprehensive protection, spike pulse suppression, insulate conduction EMI electromagnetic interference (EMI).
Whole dynamic range Automatic adjusument circuit structure of the present utility model is simple, only need to increase by two chips in common non-refrigerating infrared focal plane imaging circuit can meet the demands, can regulate for the change of target background in real time, not need manual intervention.Effectively can improve the resolution characteristic of focal plane output signal, improve the esolving degree that successive image generates.
Accompanying drawing illustrates:
Fig. 1 is the structure principle chart of existing uncooled infrared imaging system in background technology,
Fig. 2 is structure principle chart of the present utility model,
Fig. 3 is the circuit theory diagrams of ultra-low noise stabilized voltage supply in the utility model,
Fig. 4 is the circuit theory diagrams of precision digital potentiometer in the utility model;
Reference numeral: 1-un-cooled infrared focal plane array, 2-A/D converter, 3-imaging analysis module, 4-precision digital potentiometer, 5-ultra-low noise stabilized voltage supply.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with the drawings and the specific embodiments, the utility model is further elaborated.Should be appreciated that embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
With reference to Fig. 2-Fig. 3, this embodiment is by the following technical solutions: it comprises infrared focal plane array 1, A/D converter 2, imaging analysis module 3, precision digital potentiometer 4, ultra-low noise stabilized voltage supply 5, un-cooled infrared focal plane array 1 is connected with A/D converter 2, A/D converter 2 is connected with imaging analysis module 3, imaging analysis module 3 is connected with precision digital potentiometer 4, precision digital potentiometer 4 is connected with infrared focal plane array 1, and ultra-low noise stabilized voltage supply 5 is connected with precision digital potentiometer 4; Described A/D converter 2 adopts high-precision a/d converter.
Described ultra-low noise stabilized voltage supply is by electric capacity one-electric capacity three C1-C3, resistance one-resistance five R1-R5, accurate reference power supply REF, error amplifier U1, MOS driver U2, depletion type P channel MOS tube Q forms, and accurate reference power supply REF connects with resistance one R1, the other end of resistance one R1 respectively with the feedback signal terminal of error amplifier U1, one end of electric capacity one C1 connects, the reference signal end of error amplifier U1 respectively with one end of electric capacity two C2, one end of resistance two R2, one end of resistance three R3 connects, the other end of electric capacity two C2 respectively with the D pole of depletion type P channel MOS tube Q, the other end of resistance two R2, one end of electric capacity three C3, one end of resistance five R5 connects, and the power output end for being connected with precision digital potentiometer between electric capacity three C3 with resistance five R5, the other end of electric capacity three C3 is connected with resistance four R4, the output terminal of error amplifier U1 is connected with the input end of MOS driver U2, the output terminal of MOS driver U2 is connected with the G pole of depletion type P channel MOS tube Q, the S pole of depletion type P channel MOS tube Q, the VCC end of MOS driver U2, the VCC end of error amplifier U1 is all connected with power input, the other end of electric capacity one C1, the earth terminal of error amplifier U1, the earth terminal of MOS driver U2, the other end of resistance three R3, the other end of resistance four R4, the equal ground connection of the other end of resistance five R5.
In ultra-low noise voltage-stabilized power supply circuit, REF is accurate reference power supply, and it plays the effect providing burning voltage to export, and when supply voltage, environment temperature or loading condition change, minimum on the impact of output voltage; Error amplifier U1 adopts ERRORAMP, is used for fault in enlargement signal, and in controling environment, error signal is amplified by error amplifier U1, to improve sensitivity of control system, improves degree of regulation; MOS driver U2 adopts MOS DRIVER WITH ILIMIT, and the pulse amplifying that control circuit can be exported is to being enough to drive next stage circuit.
Ultra-low noise voltage-stabilized power supply circuit has the effects such as burning voltage, multifunctional comprehensive protection, spike pulse suppression, insulate conduction EMI electromagnetic interference (EMI).
The VCC end of described precision digital potentiometer is connected with the power output end of ultra-low noise stabilized voltage supply, and VH, VW, VL end of precision digital potentiometer is all connected with un-cooled infrared focal plane array, precision digital potentiometer
end ground connection, precision digital potentiometer
end is all connected with imaging analysis module.
In precision digital potentiometer, VH, VL end is respectively high voltage end and low-voltage end, and high-low voltage end is equivalent to two stiff ends of a mechanical potentiometer, and VW is sliding end, is equivalent to the movable terminal of mechanical potentiometer;
end adds counting input end, has shake removal function, and inside is connected to pull-up resistor, and end can be kept at ordinary times to be high level.When
during end input low level, internal counter starts execution and adds counting, and slip output terminal moves up, and the resistance between VL and VW increases, and the resistance between VH and VW reduces;
end subtracts tally control end, the same with input end, and have shake removal function, inside is connected to pull-up resistor, and end can be kept at ordinary times to be high level.When
during end input low level, internal counter starts execution and subtracts counting, and slip output terminal moves down, and the resistance between VL and VW reduces, and the resistance between VH and VW increases;
end automatically stores Enable Pin, and inside has shake removal function equally.
Precision digital potentiometer has that signal to noise ratio (S/N ratio) is high, dividing potential drop precision is high, effect of software programmable.
This embodiment with the addition of ultra-low noise stabilized voltage supply and precision digital potentiometer two chips on the basis that the normal imaging of original infrared focus plane exports.The effect of ultra-low noise stabilized voltage supply provides continual and steady voltage to digital regulation resistance, and precision digital potentiometer exports the V controlling to produce focal plane in imaging analysis module
eBASAGE.Concrete steps are that imaging analysis module is delivered in the output of focal plane, by analysis, target gray extract, filter forecasting process, adjusting parameter values is input to high-precision digital regulation resistance, converts the magnitude of voltage of the focal plane of needs to.
This embodiment increases ultra-low noise stabilized voltage supply and digital regulation resistance two chips in existing IRFPA imaging circuit, adjusting parameter values through subsequent treatment is input to high-precision digital regulation resistance, converts the V that required voltage value regulates focal plane to
eBASAGE.Whole dynamic range adaptation control circuit structure after improvement is simple, is applicable to miniaturization, low power dissipation design, effectively can improve the resolution characteristic of focal plane output signal, improves the esolving degree that successive image generates.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. a non-refrigerating infrared focal plane out-put dynamic range self-adaptive regulator, it is characterized in that it comprises un-cooled infrared focal plane array, A/D converter, imaging analysis module, precision digital potentiometer, ultra-low noise stabilized voltage supply, un-cooled infrared focal plane array is connected with A/D converter, A/D converter is connected with imaging analysis module, imaging analysis module is connected with precision digital potentiometer, precision digital potentiometer is connected with un-cooled infrared focal plane array, and ultra-low noise stabilized voltage supply is connected with precision digital potentiometer; Described A/D converter adopts high-precision a/d converter.
2. a kind of non-refrigerating infrared focal plane out-put dynamic range self-adaptive regulator according to claim 1, it is characterized in that described ultra-low noise stabilized voltage supply is by electric capacity one-electric capacity three (C1-C3), resistance one-resistance five (R1-R5), accurate reference power supply (REF), error amplifier (U1), MOS driver (U2), depletion type P channel MOS tube (Q) forms, accurate reference power supply (REF) is connected with resistance one (R1), the other end of resistance one (R1) respectively with the feedback signal terminal of error amplifier (U1), one end of electric capacity one (C1) connects, the reference signal end of error amplifier (U1) respectively with one end of electric capacity two (C2), one end of resistance two (R2), one end of resistance three (R3) connects, the other end of electric capacity two (C2) respectively with the D pole of depletion type P channel MOS tube (Q), the other end of resistance two (R2), one end of electric capacity three (C3), one end of resistance five (R5) connects, and the power output end for being connected with precision digital potentiometer between electric capacity three (C3) with resistance five (R5), the other end of electric capacity three (C3) is connected with resistance four (R4), the output terminal of error amplifier (U1) is connected with the input end of MOS driver (U2), the output terminal of MOS driver (U2) is connected with the G pole of depletion type P channel MOS tube (Q), the S pole of depletion type P channel MOS tube (Q), the VCC end of MOS driver (U2), the VCC end of error amplifier (U1) is all connected with power input, the other end of electric capacity one (C1), the earth terminal of error amplifier (U1), the earth terminal of MOS driver (U2), the other end of resistance three (R3), the other end of resistance four (R4), the equal ground connection of the other end of resistance five (R5).
3. a kind of non-refrigerating infrared focal plane out-put dynamic range self-adaptive regulator according to claim 1, is characterized in that the VCC end of described precision digital potentiometer is connected with the power output end of ultra-low noise stabilized voltage supply, the V of precision digital potentiometer
h, V
w, V
lend is all connected with infrared focal plane array, precision digital potentiometer
end ground connection, precision digital potentiometer
end is all connected with imaging analysis module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420578384.0U CN204154391U (en) | 2014-10-09 | 2014-10-09 | A kind of non-refrigerating infrared focal plane out-put dynamic range self-adaptive regulator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420578384.0U CN204154391U (en) | 2014-10-09 | 2014-10-09 | A kind of non-refrigerating infrared focal plane out-put dynamic range self-adaptive regulator |
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| CN204154391U true CN204154391U (en) | 2015-02-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11525735B2 (en) | 2016-01-11 | 2022-12-13 | Carrier Corporation | Infrared presence detector system |
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2014
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11525735B2 (en) | 2016-01-11 | 2022-12-13 | Carrier Corporation | Infrared presence detector system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150211 Termination date: 20161009 |