CN204439215U - A kind of infrared thermal imaging electronics athermalism system - Google Patents
A kind of infrared thermal imaging electronics athermalism system Download PDFInfo
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- CN204439215U CN204439215U CN201520135764.1U CN201520135764U CN204439215U CN 204439215 U CN204439215 U CN 204439215U CN 201520135764 U CN201520135764 U CN 201520135764U CN 204439215 U CN204439215 U CN 204439215U
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- athermalism
- thermal imaging
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Abstract
The utility model discloses a kind of infrared thermal imaging electronics athermalism system, comprise window, be arranged in order in window and be provided with front lens, rear lens and detector, the inner surface of front lens and rear lens is provided with temperature sensor, temperature sensor is coupled to Spot detection plate, and Spot detection plate is provided with control circuit, and the output terminal of control circuit couples and is provided with micromotor, rear lens is provided with focal length setting mechanism, and focal length setting mechanism is controlled by micromotor.The purpose of this utility model is to provide a kind of infrared thermal imaging electronics athermalism system, be provided with temperature measurement module and focal length setting mechanism, compared by control circuit and detect output error energy size, and control focal length setting mechanism by micromotor, thus regulate the focal length of rear lens, make imaging more clear, avoid the generation of empty burnt phenomenon.
Description
Technical field
The utility model relates to a kind of visible ray varifocal imaging optical system, and more particularly, it relates to a kind of infrared thermal imaging electronics athermalism system.
Background technology
Thermal imaging is by scenery heat radiation invisible to the human eye, being assembled by infrared optical lens is imaged onto on the sensitive area of infrared eye, the electric signal relevant with radiation feature to scenery Temperature Distribution is produced after detector opto-electronic conversion, again by after imaging circuit process, show the scene image of human viewable over the display, maybe the target information of acquisition is used for monitoring, identifies, follow the tracks of and analyze, along with the continuous progress of science and technology, the application of thermal imaging is more and more extensive.
In prior art, the structure of thermal imaging monitoring is window+camera lens+video camera, and what its received is the mid and far infrared signal of 8 ~ 14 micron wave lengths.Window generally all adopts germanite glass to make, and its effect mainly protects imaging lens not by the impact of environment, maintains a kind of thermal equilibrium preferably, protection temperature measurement accuracy.And remote temperature measurement needs the camera lens that employing focal length is large usually, due to the camera lens that focal length is large, bore is just larger, and therefore, the window that needs add is also just larger.Just more weak when camera lens transfers to for remote mid and far infrared energy emission, add self infrared radiation of large area window, considerable influence is produced to the image acquisition of imaging lens.Thermal imaging is that the infrared energy size of being come by camera lens transmission according to area to be monitored carrys out thermometric, and the infrared radiation of camera lens interior lens can cause camera lens internal temperature to raise, and belongs to error energy.
Camera lens generally adopts optical material to make, and the refractive index of optical material changes along with variation of ambient temperature.When error energy raises, cause the minute surface of thermal imaging to expand with heat and contract with cold, empty burnt phenomenon will occur, therefore, the clear and image met the demands cannot be obtained.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of infrared thermal imaging electronics athermalism system, be provided with temperature measurement module and focal length setting mechanism, compared by control circuit and detect output error energy size, and control focal length setting mechanism by micromotor, thus regulate the focal length of rear lens, make imaging more clear, avoid the generation of empty burnt phenomenon.
For achieving the above object, the utility model provides following technical scheme: a kind of infrared thermal imaging electronics athermalism system, comprise window, be arranged in order in window and be provided with front lens, rear lens and detector, the inner surface of front lens and rear lens is provided with temperature sensor, temperature sensor is coupled to Spot detection plate, Spot detection plate is provided with control circuit, the output terminal of control circuit couples and is provided with micromotor, rear lens is provided with focal length setting mechanism, and focal length setting mechanism is controlled by micromotor.
The utility model is set to further: described control circuit comprises,
Amplifying circuit, couples temperature sensor output terminal, is amplified by temperature signal and exports;
Threshold circuit, design temperature scope, exports upper limit threshold and the lower threshold of allowable temperature;
Output circuit, couples amplifying circuit and threshold circuit, and export positive rotaring signal and reverse signal to signal output port, signal output port all couples micromotor.
The utility model is set to further: described focal length setting mechanism comprises turntable and adjustment seat, described turntable is fixedly connected in the rotating shaft of micromotor, adjustment seat is fixed on the two ends of rear lens, the corresponding turntable side of adjustment seat is provided with threaded adjusting groove, turntable is in trapezoidal on cross section, and its tip portion is positioned at threaded adjusting groove.
The utility model is set to further: described threshold circuit comprises,
First threshold circuit, comprises the first resistance and slide rheostat, and this circuit on one side portion inputs the first voltage, the other end ground connection, and the connected node of the first resistance and slide rheostat exports upper limit threshold;
Second Threshold circuit, comprises the second resistance and slide rheostat, and this circuit on one side portion inputs the second voltage, the other end ground connection, the connected node bottoming threshold value of the first resistance and slide rheostat;
The utility model is set to further: described threshold circuit comprises the first temperature sensor, the first amplifying circuit, first temperature sensor is installed on window outboard face for detecting outdoor temperature, the input end of the first amplifying circuit couples the first temperature sensor, and the output terminal of the first amplifying circuit couples the input end of described output circuit.
Contrast prior art, there is following advantage in the utility model: by increasing the size that temperature measurement module detects eyeglass temperature on every arrangement of mirrors sheet, then temperature signal is transferred to control circuit, by the amplification of control circuit, compare, export, calculate the error energy size of radiation, thus according to outputing signal forward and backward and the focal length setting mechanism of control micro electric machine, lens focus is regulated.Thus correction brings deviation by error energy, makes imaging more clear, avoids the generation of empty burnt phenomenon.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the thermal imaging monitoring of prior art;
Fig. 2 is the cut-open view of the thermal imaging monitoring of prior art;
Fig. 3 is the imaging schematic diagram of focal imaging;
Fig. 4 is the schematic diagram of the outer thermal imaging electronics athermalism system of the utility model;
Fig. 5 is the temperature measurement circuit figure of the utility model temperature sensor;
Fig. 6 is the circuit diagram of the utility model threshold circuit embodiment one;
Fig. 7 is the circuit diagram of the utility model output circuit;
Fig. 8 is the circuit diagram of the utility model threshold circuit embodiment two.
Accompanying drawing marks: 1, window; 2, camera lens; 3, front lens; 4, rear lens; 5, detector; 6, adjustment seat; 61, threaded adjusting groove; 7, turntable; 8, amplifying circuit; 9, threshold circuit; 10, output circuit; 11, imaging surface; 12, sensitive chip.
Embodiment
With reference to Fig. 3 to Fig. 8, the utility model infrared thermal imaging electronics athermalism system embodiment is described further.
But the utility model can realize in various different formats, and the utility model should not be construed as and is limited to exemplary embodiment set forth herein.There is provided exemplary embodiment to contribute to more fully understanding the utility model.
Embodiment one
As shown in Figure 4, camera lens 2 expands with heat and contract with cold in the change along with temperature, thus changes the refractive index of camera lens.When camera lens 2 at expanded by heating, refractive index becomes large, and it is concrete that the imaging surface 11 of camera lens departs from sensitive chip 12(, and imaging surface is before sensitive chip), cause lens imaging empty burnt.In like manner, when camera lens 2 is in shrinkage situation, refraction index changing, causes lens imaging empty burnt equally.
Further, more we daily known to, camera lens 2 does not expand with heat and contract with cold, and by the adjustment of focal position, can play the function (amplifier focuses on the principle that the scraps of paper are burnt) of focusing.
In sum, whether thermal imaging is clear depends on temperature and focal length.
As shown in Figure 4, a kind of infrared thermal imaging electronics athermalism system, comprises window 1, is arranged in order and is provided with front lens 3, rear lens 4 and detector 5 in window 1.The inner surface of front lens 3 and rear lens 4 is provided with temperature sensor (adopting AD590), and its particular location is the junction that camera lens 2 is fixed with shell.Temperature sensor is coupled to Spot detection plate, and Spot detection plate is provided with control circuit, and the output terminal of control circuit couples and is provided with micromotor.Rear lens 4 is provided with focal length setting mechanism, and focal length setting mechanism is controlled by micromotor.
Focal length setting mechanism comprises turntable 7 and adjustment seat 6, turntable 7 is fixedly connected in the rotating shaft of micromotor, and adjustment seat 6 is fixed on the two ends of rear lens 4, and adjustment seat 6 corresponding turntable 7 side is provided with threaded adjusting groove 61, turntable 7 is in trapezoidal on cross section, and its tip portion is positioned at threaded adjusting groove 61.
Control circuit comprises:
As shown in Figure 5, amplifying circuit 8, adopt LM741 chip, its output terminal couples temperature sensor output terminal, receives temperature signal and amplifies output;
As shown in Figure 6, threshold circuit 9, threshold circuit 9 comprises first threshold circuit 9, comprises resistance R5 and slide rheostat R8, this circuit on one side portion input voltage V1, the other end ground connection, and the connected node of resistance R5 and slide rheostat R8 exports upper limit threshold; Second Threshold circuit 9, comprises resistance R6 and slide rheostat R9, this circuit on one side portion input voltage V2, the other end ground connection, the connected node bottoming threshold value of the first resistance and slide rheostat;
As shown in Figure 7, output circuit 10, couples the output terminal of amplifying circuit 8 and threshold circuit 9.Output circuit 10 comprises two output branch roads, and each branch road is provided with comparer, all adopts LM741 chip.The input end of comparer IC1 receives temperature signal and upper limit threshold respectively, exports positive rotaring signal by comparing.The input end of comparer IC2 receives temperature signal and lower threshold respectively, by comparing output reverse signal.The rotating of the forward and backward signal control micro electric machine exported by output circuit 10, thus make the focal length of micromotor regulating and controlling rear lens 4, make imaging more clear, avoid the generation of empty burnt phenomenon.
Embodiment two
As shown in Figure 8, compared with enforcement one, only make improvements in threshold circuit 9.Threshold circuit 9 comprises temperature sensor, amplifying circuit 8.But this temperature sensor is installed on window 1 outside surface, for detecting outdoor temperature.The input end of amplifying circuit 8 couples this temperature sensor, receives ambient temperature signal.Be coupled to output circuit 10 by the output terminal of amplifying circuit 8, compared by output circuit 10 to outdoor with indoor temperature, its output signal can control micro electric machine forward and backward equally, thus adjustable lens 2 focal length.
Contrast prior art, there is following advantage in the utility model: by increasing the size that temperature measurement module detects eyeglass temperature on every arrangement of mirrors sheet, then temperature signal is transferred to control circuit, by the amplification of control circuit, compare, export, calculate the error energy size of radiation, thus according to outputing signal forward and backward and the focal length setting mechanism of control micro electric machine, camera lens 2 focal length is regulated.Thus correction brings deviation by error energy, makes imaging more clear, avoids the generation of empty burnt phenomenon.
The above is only preferred implementation of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (5)
1. an infrared thermal imaging electronics athermalism system, comprise window, be arranged in order in described window and be provided with front lens, rear lens and detector, it is characterized in that: the inner surface of described front lens and rear lens is provided with temperature sensor, described temperature sensor is coupled to Spot detection plate, described Spot detection plate is provided with control circuit, the output terminal of described control circuit couples and is provided with micromotor, described rear lens is provided with focal length setting mechanism, and described focal length setting mechanism is controlled by micromotor.
2. infrared thermal imaging electronics athermalism system according to claim 1, is characterized in that: described control circuit comprises,
Amplifying circuit, couples temperature sensor output terminal, is amplified by temperature signal and exports;
Threshold circuit, design temperature scope, exports upper limit threshold and the lower threshold of allowable temperature;
Output circuit, couples amplifying circuit and threshold circuit, and export positive rotaring signal and reverse signal to signal output port, signal output port all couples micromotor.
3. infrared thermal imaging electronics athermalism system according to claim 1, it is characterized in that: described focal length setting mechanism comprises turntable and adjustment seat, described turntable is fixedly connected in the rotating shaft of micromotor, described adjustment seat is fixed on the two ends of rear lens, the corresponding turntable side of adjustment seat is provided with threaded adjusting groove, described turntable is in trapezoidal on cross section, and its tip portion is positioned at threaded adjusting groove.
4. infrared thermal imaging electronics athermalism system according to claim 2, is characterized in that: described threshold circuit comprises,
First threshold circuit, comprises the first resistance and slide rheostat, and this circuit on one side portion inputs the first voltage, the other end ground connection, and the connected node of the first resistance and slide rheostat exports upper limit threshold;
Second Threshold circuit, comprises the second resistance and slide rheostat, and this circuit on one side portion inputs the second voltage, the other end ground connection, the connected node bottoming threshold value of the first resistance and slide rheostat.
5. infrared thermal imaging electronics athermalism system according to claim 2, it is characterized in that: described threshold circuit comprises the first temperature sensor and the first amplifying circuit, described first temperature sensor is installed on described window outboard face for detecting outdoor temperature, the input end of described first amplifying circuit couples the first temperature sensor, and the output terminal of the first amplifying circuit couples the input end of described output circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520135764.1U CN204439215U (en) | 2015-03-10 | 2015-03-10 | A kind of infrared thermal imaging electronics athermalism system |
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| CN201520135764.1U CN204439215U (en) | 2015-03-10 | 2015-03-10 | A kind of infrared thermal imaging electronics athermalism system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109341868A (en) * | 2018-12-03 | 2019-02-15 | 北京遥感设备研究所 | A kind of sensitivity Auto-Test System and method |
| CN109541796A (en) * | 2018-12-26 | 2019-03-29 | 北京旷视科技有限公司 | Antidote, device, system and the optical transmitting set of lens curvature |
| CN112034584A (en) * | 2020-09-04 | 2020-12-04 | 长春长光智欧科技有限公司 | Lens structure capable of realizing accurate in-situ temperature detection and temperature compensation method thereof |
-
2015
- 2015-03-10 CN CN201520135764.1U patent/CN204439215U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109341868A (en) * | 2018-12-03 | 2019-02-15 | 北京遥感设备研究所 | A kind of sensitivity Auto-Test System and method |
| CN109341868B (en) * | 2018-12-03 | 2020-11-13 | 北京遥感设备研究所 | Automatic sensitivity testing system and method |
| CN109541796A (en) * | 2018-12-26 | 2019-03-29 | 北京旷视科技有限公司 | Antidote, device, system and the optical transmitting set of lens curvature |
| CN112034584A (en) * | 2020-09-04 | 2020-12-04 | 长春长光智欧科技有限公司 | Lens structure capable of realizing accurate in-situ temperature detection and temperature compensation method thereof |
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Effective date of registration: 20160520 Address after: 409, room 2, building 448, long river commercial building, 310000 Changjiang Road, Changhe Road, Binjiang District, Zhejiang, Hangzhou Patentee after: Hangzhou success Technology Co., Ltd. Address before: 408, room 2, building 448, long river commercial building, 310000 Changjiang Road, Changhe Road, Binjiang District, Zhejiang, Hangzhou Patentee before: Hangzhou Zhou Yu Science and Technology Ltd. |
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| 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: 20150701 Termination date: 20170310 |