CN2037843U - Infrared heat source detector - Google Patents
Infrared heat source detector Download PDFInfo
- Publication number
- CN2037843U CN2037843U CN 88202995 CN88202995U CN2037843U CN 2037843 U CN2037843 U CN 2037843U CN 88202995 CN88202995 CN 88202995 CN 88202995 U CN88202995 U CN 88202995U CN 2037843 U CN2037843 U CN 2037843U
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- heat source
- source detector
- infrared heat
- mirror
- infrared
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Abstract
The utility model relates to an infrared heat source detector, comprising an optical focusing mirror, an infrared sensor, a signal processing system, and one-dimensional scanning device arranged in the object space of the optical focusing mirror and composed of a motor and a plane mirror. When the infrared heat source detector is used, the user can carry out the other dimension motion through holding the detector in hand, the overheat object can be rapidly found out, and the temperature and the position of the object can be determined. The infrared heat source detector has wide-ranging use on electric force detecting, train hot box detecting, safety detecting, energy conservation, forest fire prevention and fire-fighting. The infrared heat source detector has the features of simple operation, small volume, low cost and high reliability.
Description
The utility model relates to a kind of infrared radiation temperature sensing instrument, especially for the rapid thermal source of seeking, and the heat detector of definite its temperature and position.
Infrared radiation temperature roughly is divided three classes: some thermometric, line thermometric, face thermometric.The point temperature measurer can be to any point thermometric in the space, characteristics be precision height, visual field little, be difficult to seek the thermometric target.The face temperature measurer is thermal imaging system again, and it can show the Temperature Distribution on the plane, space, and can determine the wherein temperature of any point.Be characterized in big, the good visual effect in visual field, but volume is big, technical sophistication, use inconvenience.The line temperature measurer is between between the two, and it can show the Temperature Distribution on certain bar line in the space, and can determine the temperature of any point on this line.The US3972124 american documentation literature has disclosed a kind of temperature measuring device with this class function.This temperature measuring device adopts swing driven by motor level crossing to swing back and forth, realization is to the one-dimensional scanning in space, after the infrared information that receives by detection window is handled through optical system and signal processing apparatus, demonstrate the Temperature Distribution of each point on the sweep trace again by the light emitting diode alignment.Though it is multiple functional, precision is high, be more suitable for experiment or research usefulness, complex structure, power consumption be big, involve great expense, and penetration and promotion is restricted.And it is same because volume causes than difficult greatly for greatly the application of more occasions.
In a large amount of practical matter, and do not require that measuring temperature or displays temperature very accurately distributes and only require and find the heating target apace, and judge whether it is higher than certain temperature value.If being higher than certain temperature value just should in time handle.Aspects such as for example the skill safety check is looked into, generated electricity, the maintenance of transmission of electricity, power transformation, energy-conservation, mechanical electric apparatus equipment, the detection of train hot box all need easy and promptly seek heat generating spot, particularly forest fire protection, need in time to report to the police, after fire extinguishing, need to monitor ember.When the maintenance of plant equipment and power-supply unit or circuit, the failure judgement situation can be brought great convenience to service work by determining heat generating spot exactly.
The purpose of this invention is to provide a kind of be suitable for above-mentioned various uses and be easy to carry, cost is low, the power consumptive province, can be easy and promptly find thermal source and determine the small-sized infrared heat source detector of its temperature and position.
The related infrared heat source detector of the utility model is made up of casing, mechanical scanner, optical focus mirror, infrared sensor, amplifier, comparer, newspaper well device.Mechanical scanner is arranged on object space one side of optical focus mirror, drive a level crossing rotation by a DC micromotor, object space is scanned, the purpose of scanning is to enlarge the visual field, and scanning field of view is to be limited by the detection window of offering on the position corresponding to plane mirror on the casing.The effect of optical focus mirror is that the directional light with incident focuses on the infrared sensor.Infrared sensor is installed in the focal position of optical focus mirror primary optical axis, can change infrared radiation into voltage signal.The temperature of object is high more, and infrared radiation is strong more, and voltage signal is big more.This voltage signal is sent into comparer after amplifier amplifies, when this signal is higher than the fixed voltage that presets in the comparer, promptly produce output signal, triggers the alarm warning of sounding by output signal.
Offering detection window on the position corresponding to plane mirror on the casing of infrared heat source detector, scanning field of view is limited in the certain limit on the one-dimensional space.For example can be limited in less than in the 60 degree angular regions.As shown in Figure 2, grip this instrument, it is rotated perpendicular to the direction of scanning, can make the topped very big space of scanning field of view of this instrument with hand.Therefore, promptly can be easy by alerting signal and promptly determine the thermal source target direction.
The method of determining the orientation is to make a boresight parallel with the visual field direction on casing.Also can in casing, adorn a visible light view finder, in view finder, make a line,, this line be overlapped with actual scan line through actual alignment.
Circuit can be provided with a comparer from actual needs, be used for judging whether the temperature of any point in the scanning field of view surpasses certain predetermined temperature value, and accident amount temperature or displays temperature distributes.Insert by potentiometer with the corresponding scheduled voltage of this predetermined temperature value, and make it corresponding one by one with actual temperature through calibration.This circuit structure is simple, practical, power saving.
Owing to adopted DC micromotor, reached that volume is little, cost is low, the purpose of power consumptive province.The optical focus mirror can constitute with a simple lens or a simple reflector.
This instruments weight is less than 1 kilogram, but with No. 5 battery continuous workings 24 hours, minimum alarm temperature can arrive 60 ℃, temperature measurement accuracy 5%.The cigarette end of lighting can be in tens meters scope, found rapidly, 30 meters overheating fault points can be found rapidly with interior hi-line.
Fig. 1 is the structural representation of infrared heat source detector.
Fig. 2 is an infrared heat source detector operation synoptic diagram.
Fig. 3 is the most preferred embodiment circuit diagram of infrared heat source detector.
Describe concrete structure of the present utility model in detail below in conjunction with accompanying drawing.As shown in Figure 1, plane mirror 2 is directly installed on the axle of direct current generator 1, and minute surface and motor shaft are in angle of 45 degrees.The primary optical axis of optical focus mirror 4 and the coaxial installation of motor shaft.Infrared sensor T is installed on the focal position of primary optical axis of optical focus mirror 4.Detection window 3 is installed on the casing 8 position corresponding to plane mirror.By determining the detection window size, the scanning field of view angle can be limited in the 40 degree angular regions.
Direct current motor 1 is selected recorder motor for use.Infrared sensor T selects HgCdTe device for use.Detection window 3 is selected the magnesium fluoride material for use.Optical focus mirror 4 is selected germanium material for use, diameter 20MM, focal length 40MM.The work synoptic diagram as shown in Figure 2, wherein α is the horizontal field of view angle, β is the vertical field of view angle, total visual field be one vertical rectangular
As shown in Figure 3, infrared sensor T is the resistor-type device, need add certain voltage during work, and R1 is its biasing resistor.C1 is a partiting dc capacitor.Constituted amplifier by T, R2, OP1, enlargement factor is R2/RT, and wherein RT is the resistance value of T.Constituted comparer by OP2R3, when the positive input terminal voltage of OP2 is higher than negative input end voltage, be output as noble potential, otherwise be electronegative potential.Negative input end voltage is adjusted by potentiometer R3, therefore can preset different alarm temperature values.
Constituted alarm by monostable trigger DW and hummer A.When the input end B of DW has a positive pulse, its output terminal Q just produce a broadening positive pulse, the purpose of broadening is for people's ear can be heard, its width is determined by R4, C2.The output terminal Q of monostable trigger DW directly is connected and can sounds with hummer A.
Among Fig. 3+V receives positive supply.
Amplifier and comparer OP1, OP2 can adopt integrated transporting discharging LM358, and DW can adopt integrated circuit DC4528.Hummer A has the commercially available prod.
Claims (2)
1. the infrared heat source detector is made of casing, mechanical scanner, optical focus mirror, infrared sensor and signal processing system.It is characterized in that object space one side that mechanical scanner is installed in the optical focus mirror carries out object space scanning.The axle head of motor is installed a plane mirror, this scanister adopts DC micromotor, infrared sensor is arranged on the focal position of the primary optical axis of optical focus mirror, on a sidewall of casing, offer detection window corresponding to the position of plane mirror, this detection window can be limited in the scanning field of view of mechanical scanner less than 60 in the one-dimensional space spends in the scope of angles, signal processing system has amplifier and comparer, and its output terminal links to each other with alarm.
2. infrared heat source detector according to claim 1, it is characterized in that the DC micromotor that mechanical scanner adopts is the sound-track engraving apparatus motor, this motor and the coaxial installation of optical focus mirror, with the installation angle of plane mirror be 45 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88202995 CN2037843U (en) | 1988-04-16 | 1988-04-16 | Infrared heat source detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88202995 CN2037843U (en) | 1988-04-16 | 1988-04-16 | Infrared heat source detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2037843U true CN2037843U (en) | 1989-05-17 |
Family
ID=4837905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88202995 Pending CN2037843U (en) | 1988-04-16 | 1988-04-16 | Infrared heat source detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2037843U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101557662B (en) * | 2008-04-09 | 2011-12-28 | 株式会社东芝 | induction heating cooker |
| CN112242038A (en) * | 2020-08-24 | 2021-01-19 | 烟台艾睿光电科技有限公司 | Fire situation determination method, device, equipment and computer readable storage medium |
| CN112351757A (en) * | 2018-04-06 | 2021-02-09 | 克拉诺瓦公司 | Device for treating tissue comprising an original optical system for laser deflection and focusing |
-
1988
- 1988-04-16 CN CN 88202995 patent/CN2037843U/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101557662B (en) * | 2008-04-09 | 2011-12-28 | 株式会社东芝 | induction heating cooker |
| CN112351757A (en) * | 2018-04-06 | 2021-02-09 | 克拉诺瓦公司 | Device for treating tissue comprising an original optical system for laser deflection and focusing |
| CN112351757B (en) * | 2018-04-06 | 2023-09-29 | 克拉诺瓦公司 | Apparatus for treating tissue comprising an original optical system for laser deflection and focusing |
| CN112242038A (en) * | 2020-08-24 | 2021-01-19 | 烟台艾睿光电科技有限公司 | Fire situation determination method, device, equipment and computer readable storage medium |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |