CN207184713U - Integrated infrared optical super-resolution imaging instrument - Google Patents

Integrated infrared optical super-resolution imaging instrument Download PDF

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Publication number
CN207184713U
CN207184713U CN201721261784.9U CN201721261784U CN207184713U CN 207184713 U CN207184713 U CN 207184713U CN 201721261784 U CN201721261784 U CN 201721261784U CN 207184713 U CN207184713 U CN 207184713U
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China
Prior art keywords
circuit
resolution imaging
imaging instrument
infrared
optical super
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Expired - Fee Related
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CN201721261784.9U
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Chinese (zh)
Inventor
谢智峰
赵嘉
张�浩
曾任贤
吕莉
马向进
樊棠怀
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Nanchang Institute of Technology
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Nanchang Institute of Technology
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Abstract

The utility model is related to a kind of integrated infrared optical super-resolution imaging instrument includes：For gathering the Infrared Lens of object infra-red radiation, for receiving the infrared focal plane detector of Infrared Lens collection signal, the output signal of the infrared focal plane detector is inputted to digital signal processing circuit through AD Acquisition Circuit to be converted into digital image data；The digital signal processing circuit is suitable to digital image data by being shown after D/A conversion module by display module；Integrated infrared optical super-resolution imaging instrument of the present utility model has the advantages of system cost is low, low in energy consumption, and integrated level is high, the infrared radiation signal of collection can be quickly converted to digital image data, and can be shown by display module.

Description

Integrated infrared optical super-resolution imaging instrument
Technical field
The utility model belongs to infrared imaging field, and in particular to a kind of integrated infrared optical super-resolution imaging Instrument.
Background technology
With the development of infrared detection technique, people propose higher want to infrared measurement of temperature precision and infrared imaging quality Ask.Due to being limited by infrared focal plane detector reading circuit Miniaturization Design, high-accuracy digital signal is difficult directly to read.
Therefore asked, it is necessary to design the technology that a kind of integrated infrared optical super-resolution imaging instrument is this area urgent need to resolve Topic.
Utility model content
The purpose of this utility model is to provide the integration that a kind of circuit is simple, can quickly read high-accuracy digital signal Infrared optical super-resolution imaging instrument.
In order to solve the above-mentioned technical problem, the utility model provides a kind of integrated infrared optical super-resolution imaging Instrument, including：
For gathering the Infrared Lens of object infra-red radiation, the infrared focus plane for receiving Infrared Lens collection signal is visited Device is surveyed, the output signal of the infrared focal plane detector is inputted to digital signal processing circuit through AD Acquisition Circuit to be converted into Digital image data；
The digital signal processing circuit is suitable to digital image data by being carried out after D/A conversion module by display module Display.
Further, the AD Acquisition Circuit includes：Modulate circuit, the AD conversion chip being connected with the modulate circuit；Wherein
The modulate circuit includes：Second order RC lowpass filter, the operation amplifier being connected with the second order RC lowpass filter Device；
The input end of analog signal of the output end connection AD conversion chip of the operational amplifier.
Further, the operational amplifier uses in-phase proportion computing circuit, and its multiplication factor is not less than 2 times；And
The output end of the in-phase proportion computing circuit connects two high-frequency diodes；Wherein
The anode of first high-frequency diode is connected with the output end of in-phase proportion computing circuit, its negative electrode and power end phase Even；And
The negative electrode of second high-frequency diode is connected with the output end of in-phase proportion computing circuit, its anode and ground connection.
Further, the AD conversion chip includes：The analog signal being connected with the output end of in-phase proportion computing circuit is defeated Enter end, and
Bias reference voltage input, i.e. VREF ends and VINB ends；
The VREF ends and VINB ends are connected with a VINB duty control circuits, to control the input voltage at VINB ends.
Further, the VINB duty control circuits include：Partial pressure conditioned circuit, partial pressure electricity is obtained from the partial pressure conditioned circuit The voltage follower of pressure value.
Further, the control terminal of the digital signal processing circuit connects a sequence circuit；
AD conversion chip is suitable for by the sequence circuit and infrared focal plane detector provides corresponding time sequence signal.
Further, the integrated infrared optical super-resolution imaging instrument also includes：Temperature control circuit；And
Integrated temperature sensor and TEC in the infrared focal plane detector；
The temperature control circuit is suitable to the temperature value of collecting temperature sensor, and adjusts burnt in the infrared focal plane detector Face temperature.
Further, the digital signal processing circuit is also associated with USB communication interface circuits；
It is suitable to send digital image data to PC by the USB communication interface circuits.
The beneficial effects of the utility model are that integrated infrared optical super-resolution imaging instrument of the present utility model has The advantages of cost of uniting is low, low in energy consumption, and integrated level is high, can quickly be converted to digital picture number by the infrared radiation signal of collection According to, and can be shown by display module.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is the theory diagram of integrated infrared optical super-resolution imaging instrument of the present utility model；
Fig. 2 is the circuit theory diagrams of modulate circuit of the present utility model；
Fig. 3 is the circuit theory diagrams of VINB duty control circuits of the present utility model.
Embodiment
The utility model is described in further detail presently in connection with accompanying drawing.These accompanying drawings are simplified schematic diagram, Only illustrate basic structure of the present utility model in a schematic way, therefore it only shows the composition relevant with the utility model.
Embodiment
Fig. 1 is the theory diagram of integrated infrared optical super-resolution imaging instrument of the present utility model；
Fig. 1 is referred to, present embodiments provides a kind of integrated infrared optical super-resolution imaging instrument, including：For adopting Collect the Infrared Lens of object infra-red radiation, it is described infrared for receiving the infrared focal plane detector of Infrared Lens collection signal The output signal of focus planar detector is inputted to digital signal processing circuit through AD Acquisition Circuit to be converted into digital image data； The digital signal processing circuit is suitable to digital image data by being shown after D/A conversion module by display module.
The infrared focal plane detector can use non-refrigerated infrared focal plane probe, its model UL_03_19_ 1, the digital signal processing circuit can be, but not limited to use DSP Processor；The display module can use liquid crystal display Module.
A kind of preferred embodiment as AD Acquisition Circuit.
Fig. 2 is the circuit theory diagrams of modulate circuit of the present utility model；
As shown in Fig. 2 the AD Acquisition Circuit includes：Modulate circuit, the AD conversion chip being connected with the modulate circuit；Its Described in modulate circuit include：Second order RC lowpass filter, the operational amplifier being connected with the second order RC lowpass filter；It is described The input end of analog signal of the output end connection AD conversion chip of operational amplifier.
Further, the operational amplifier uses in-phase proportion computing circuit, and its multiplication factor is not less than 2 times；And institute The output end for stating in-phase proportion computing circuit connects two high-frequency diodes；Wherein the first high-frequency diode D1 anode is the same as with compared with The output end of example computing circuit is connected, and its negative electrode is connected with power end；And second high-frequency diode D2 negative electrode with compared with The output end of example computing circuit is connected, its anode and ground connection.
Master clock frequency is set in the design as 5MHz, the frequency of the analog signal of this infrared focal plane detector output It is identical with master clock frequency, and 5MHz.In order to ensure that infrared focal plane detector analog output signal passes through low pass filter It is undistorted afterwards, filter cutoff frequency is arranged to 5 times i.e. 25MHz of simulation output frequency, therefore resistance in low pass filter R34 and resistance R35 resistance are 2.4, and electric capacity C66 and electric capacity C67 are 1nF.Simulation after LPF is believed The half of original signal voltage swing number is first adjusted to accurate divider resistance, then twice of amplification is carried out with operational amplifier, finally Sampled in input AD conversion chip.Operational amplifier can improve the driving force of signal.Ensure that operational amplifier exports mould Plan signal is undistorted, and the bandwidth of operational amplifier have to be larger than the bandwidth of its input signal.
Operational amplifier uses the inexpensive operational amplifier A D8602 of ADI companies；AD conversion chip is suitable to use AD9240。
The AD conversion chip includes：The input end of analog signal being connected with the output end of in-phase proportion computing circuit, i.e., VINA ends；And bias reference voltage input, i.e. VREF ends and VINB ends；The VREF ends and VINB ends are connected with a VINB Duty control circuit, to control the input voltage at VINB ends.AD9240 can adjust VREF ends and VINB by external reference voltage The value at end adjusts the scope at its simulation input VINA ends.Peripheral circuit on AD9240 specifically may refer to the skill of the chip Art handbook.
Fig. 3 is the circuit theory diagrams of VINB duty control circuits of the present utility model.
The VINB duty control circuits include：Partial pressure conditioned circuit, branch pressure voltage value is obtained from the partial pressure conditioned circuit Voltage follower.
Wherein, the magnitude of voltage at the VREF ends is determined by the power supply module of this integrated infrared optical super-resolution imaging instrument It is fixed；VINB values are controlled by the VINB duty control circuits；The integrated operational amplifier of the voltage follower is suitable to use LMV358。
In figure, VCC_5V REF, VCC_5VA come to power supply module.
The control terminal of the digital signal processing circuit connects a sequence circuit；AD is suitable for by the sequence circuit to turn Change chip and infrared focal plane detector provides corresponding time sequence signal.
The sequence circuit can use the Cyclone IV Series FPGA chips EP4CE30F23C8 of altera corp To realize, there is provided master clock signal, reset signal, integrated signal and configuration signal, AD conversion core needed for detector normal work The control signal of piece.FPGA chips EP4CE30F23C8 can also be used as digital signal processing circuit simultaneously, to improve The degree of integration of whole circuit.
The integrated infrared optical super-resolution imaging instrument also includes：Temperature control circuit；And the infrared focus plane is visited Survey integrated temperature sensor and TEC in device UL_03_19_1；The temperature control circuit is suitable to the temperature of collecting temperature sensor Angle value, and focal plane temperature in the infrared focal plane detector is adjusted, and then the service behaviour of uncooled detector is improved, surely Determine the working condition of each sensitive pixel in infrared focal plane array, become easier to the Nonuniformity Correction of later image, most The temperature resolution of thermal imaging system is improved eventually, fundamentally improves the quality of infrared image.
The temperature control circuit is suitable to temperature control chip ADN8830 and its peripheral circuit using ADI companies.
The digital signal processing circuit is also associated with USB communication interface circuits；Fitted by the USB communication interface circuits Sent in by digital image data to PC.
The USB communication interface circuits can be, but not limited to use USB2.0 or USB3.0.
Using it is above-mentioned according to desirable embodiment of the present utility model as enlightenment, pass through above-mentioned description, related work people Member can carry out various changes and amendments in the range of without departing from this item utility model technological thought completely.This item is real The content being not limited to new technical scope on specification, it is necessary to which its technology is determined according to right Property scope.

Claims (8)

  1. A kind of 1. integrated infrared optical super-resolution imaging instrument, it is characterised in that including：
    For gathering the Infrared Lens of object infra-red radiation, for receiving the infrared focus plane detection of Infrared Lens collection signal Device, the output signal of the infrared focal plane detector are inputted to digital signal processing circuit through AD Acquisition Circuit to be converted into counting Word view data；
    The digital signal processing circuit is suitable to digital image data by being shown after D/A conversion module by display module.
  2. 2. integrated infrared optical super-resolution imaging instrument according to claim 1, it is characterised in that
    The AD Acquisition Circuit includes：Modulate circuit, the AD conversion chip being connected with the modulate circuit；Wherein
    The modulate circuit includes：Second order RC lowpass filter, the operational amplifier being connected with the second order RC lowpass filter；
    The input end of analog signal of the output end connection AD conversion chip of the operational amplifier.
  3. 3. integrated infrared optical super-resolution imaging instrument according to claim 2, it is characterised in that
    The operational amplifier uses in-phase proportion computing circuit, and its multiplication factor is not less than 2 times；And
    The output end of the in-phase proportion computing circuit connects two high-frequency diodes；Wherein
    The anode of first high-frequency diode is connected with the output end of in-phase proportion computing circuit, and its negative electrode is connected with power end；With And
    The negative electrode of second high-frequency diode is connected with the output end of in-phase proportion computing circuit, its anode and ground connection.
  4. 4. integrated infrared optical super-resolution imaging instrument according to claim 3, it is characterised in that
    The AD conversion chip includes：The input end of analog signal being connected with the output end of in-phase proportion computing circuit, and
    Bias reference voltage input, i.e. VREF ends and VINB ends；The VREF ends and VINB ends are connected with VINB values control Circuit, to control the input voltage at VINB ends.
  5. 5. integrated infrared optical super-resolution imaging instrument according to claim 4, it is characterised in that the VINB values control Circuit processed includes：Partial pressure conditioned circuit, the voltage follower of branch pressure voltage value is obtained from the partial pressure conditioned circuit.
  6. 6. integrated infrared optical super-resolution imaging instrument according to claim 5, it is characterised in that
    The control terminal of the digital signal processing circuit connects a sequence circuit；
    AD conversion chip is suitable for by the sequence circuit and infrared focal plane detector provides corresponding time sequence signal.
  7. 7. integrated infrared optical super-resolution imaging instrument according to claim 6, it is characterised in that
    The integrated infrared optical super-resolution imaging instrument also includes：Temperature control circuit；And
    Integrated temperature sensor and TEC in the infrared focal plane detector；
    The temperature control circuit is suitable to the temperature value of collecting temperature sensor, and adjusts focal plane in the infrared focal plane detector Temperature.
  8. 8. integrated infrared optical super-resolution imaging instrument according to claim 1, it is characterised in that
    The digital signal processing circuit is also associated with USB communication interface circuits；
    It is suitable to send digital image data to PC by the USB communication interface circuits.
CN201721261784.9U 2017-09-28 2017-09-28 Integrated infrared optical super-resolution imaging instrument Expired - Fee Related CN207184713U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721261784.9U CN207184713U (en) 2017-09-28 2017-09-28 Integrated infrared optical super-resolution imaging instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721261784.9U CN207184713U (en) 2017-09-28 2017-09-28 Integrated infrared optical super-resolution imaging instrument

Publications (1)

Publication Number Publication Date
CN207184713U true CN207184713U (en) 2018-04-03

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108542387A (en) * 2018-04-23 2018-09-18 佛山科学技术学院 A kind of human body chewing signal detection system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108542387A (en) * 2018-04-23 2018-09-18 佛山科学技术学院 A kind of human body chewing signal detection system

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Granted publication date: 20180403

Termination date: 20190928