CN1190668C - Wide-range reconnaissance device and its reconnaissance range extending method - Google Patents
Wide-range reconnaissance device and its reconnaissance range extending method Download PDFInfo
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- CN1190668C CN1190668C CNB011156341A CN01115634A CN1190668C CN 1190668 C CN1190668 C CN 1190668C CN B011156341 A CNB011156341 A CN B011156341A CN 01115634 A CN01115634 A CN 01115634A CN 1190668 C CN1190668 C CN 1190668C
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Abstract
The present invention relates to a wide range detector and a method for broadening a detection range. The detector is composed of a fixing seat, a spherical body positioned on the fixing seat, a circuit disk pack arranged in the fixing seat, a combination of lenses and a signal deflection plate, wherein the circuit disk pack comprises all elements for detecting input and processing circuits, and an infrared ray detecting element; the combination of lenses is arranged in front of the detecting element and stacks polyhedral arcs; the detecting element is positioned on a focal point of the combination of lenses and is used for receiving and aggregating infrared rays; the signal deflection plate is connected with the detecting element and is provided with symmetrical reflection units; each reflection unit is respectively composed of two reflection plane surfaces. The present invention can cover dead angles on the left and the right sides exceeding 60 DEG of a central shaft.
Description
Technical field
The invention relates to a kind of ultrared sensing device, refer to especially a kind ofly be formed with signal deviation plate, can promote, make it can obtain reconnaissance range more than nearly 120 degree greater than above detecting sensitivity and the angle of 120 degree by the multiaspect curved lenses combination of banking up.Disclose the method that strengthens reconnaissance range simultaneously.
Background technology
Generally speaking, thermoelectric (al) type ultrared sensing device can be used in burglary-resisting system, temperature detector system, lighting control system and various automatic control system effectively.For example be applied to the incident infrared that is sent by human body and carry out its detecting operation by above-mentioned ultrared sensing device, this kind detector can be installed in the surveillance of buildingss such as building, to give the alarm when the people swarms into or to carry out other functions.
Only the angular range of its detecting of this kind ultrared sensing device at present between 110 degree are spent to 120, is spent above reconnaissance range and can't reach 120 greatly, for example is contained in usually on wall or eaves or the ceiling at traditional ultrared sensing device.Dead angle in the detecting is so just arranged, particularly in the wall angle or the end.This dead angle ratio is in the increase of surveillance distance and strengthen.In order to solve this dead angle problem, the prompting of some scheme.The reconnaissance range that No. the 5th, 103,346, the United States Patent (USP) of Zhang Shi (Nally Chang) is the left and right sides side detecting plates that receive the detector front by means of signal greater than 120 degree.Be synoptic diagram as shown in Figure 1 for this case detecting angle, this case can't receive the detector central shaft at signal and rises between 70 degree and 80 degree and respond as seen from the figure, the dead detecting angle in formation A1 zone, and other relevant patents also comprise United States Patent (USP) 3,923, No. 382 (Harding), 4,268, No. 752 (Herwig et al), 4,644, No. 147 (Zublin), 4,703, No. 171 (Kahl et al).
Summary of the invention
Fundamental purpose of the present invention is to overcome above-mentioned traditional dead detecting angle, and a kind of wide scope detector is provided and strengthens the method for reconnaissance range, it can promote greater than above detecting sensitivity and the angle of 120 degree, and reaches the above reflection of 200 degree to eliminate dead detecting angle.
A kind of wide scope ultrared sensing device of the present invention comprises: a holder (10); One is installed on the spherical (20) on this holder (10); One first a turntable group (32) and a second circuit dish group (33) are to be disposed at this spherical (20) inside, become the part of detecting and treatment circuit; It is preceding that one multiaspect curved lenses combination (28) is installed on a detecing element (34); This ultrared sensing element (34) is positioned at the focus of this curved lenses combination (28); And a signal deviation plate (40) is incorporated into this detecing element (34) and is installed on this turntable (32), it is characterized in that;
Described multiaspect curved lenses combination (28) is made up of six focal zones, comprise that two bank up, the first central focus zone (28A) and the second central focus zone (28B), it is by two the first multiaspect lens (28a) and the second multiaspect lens (28b) and bank up in the first central focus zone (28A) and both sides, the second central focus zone (28B) respectively, first side focal zone (28C) and second side focal zone (28D) form this side focal zone (28C, be that each is by the first and second wide-angle side lens (28c 28D), 28d) constitute; And
Described signal deviation plate (40) main by two identical reflector elements (42) with interface limit (44) symmetry division, and formation V-arrangement recess (54), each reflector element (42) is provided with two or more first reflectings surface (50), second reflecting surface (51), the 3rd reflecting surface (52), the 4th reflecting surface (53), this reflecting surface is disperseed out by the axis of centres of detecing element (34), forms with all first reflectings surface (50), second reflecting surface (51), the 3rd reflecting surface (52), the 4th reflecting surface (53) and hands over obtuse-angulate flank shape mutually.
Wherein said first reflecting surface (50) is positioned at contiguous this interface limit (44) and locates; Second reflecting surface (51) is positioned under this first reflecting surface (50); The 3rd reflecting surface (52) is positioned at this first reflecting surface (50) afterwards; The terminal part of this second reflecting surface (51), the 3rd reflecting surface (52) contacts with each other; The 4th reflecting surface (53) is positioned at the 3rd reflecting surface (52) afterwards.
Wherein said two side of banking up first focal zones (28C) are each sides that is disposed at the central focus zone with second focal zone (28D), and first focal zone (28C) of each side or second focal zone (28D) include one first wide-angle lens (28c) or second wide-angle lens (28d), respectively have a suitable single focus (Ec) or (Ed).
The either side that wherein said these first side focal zones (28C) or second focal zone (28D) are contained self-detection element (34) central shaft rises greater than 120 degree or greater than 60 reconnaissance ranges of spending.
Wherein the focusing to far next incident infrared is to be finished by the suitable focus (Ea) of the first multiaspect lens (28a) or the suitable focus (Ec) of the first wide-angle side lens (28c).
Wherein the focusing to contiguous incident infrared is to be finished by the suitable focus (Eb) of the second multiaspect lens (28b) or the suitable focus (Ed) of the second wide-angle side lens (28d).
A kind of method that strengthens ultrared sensing device reconnaissance range of the present invention, it is to combine with the multiaspect combination of lenses of banking up (28), and described multiaspect combination of lenses (28) comprises first wide-angle lens (28c) of central authorities' first focal zones (28A), second focal zone (28B) and four wide-angles that two the first multiaspect lens (28a) that are disposed at central part, the second multiaspect lens (28b) form, side first focal zone (28C), second focal zone (28D) that second wide-angle lens (28d) forms; An and deviation plate (40), also include and be positioned at preceding first reflecting surface (50) of detecing element (34), second reflecting surface (51), the 3rd reflecting surface (52), the 4th reflecting surface (53), it is characterized in that the step that comprises has: two first wide-angle side lens of banking up (28c), the second wide-angle side lens (28d) are set in each side of central first focal zone (28A), second focal zone (28B);
Assemble the far and near incident infrared that rises more than 120 degree from detecing element (34) central shaft and be radiated at deviation plate (40) through the focus of suitable first wide-angle lens (28c), second wide-angle lens (28d); And
Again by with the assistance deviation of this contacted suitable first reflecting surface of deviation plate (40) (50), second reflecting surface (51), the 3rd reflecting surface (52), the 4th reflecting surface (53), and make this incident ray refraction in detecing element (34).
It also comprises a step: the central shaft that four first reflectings surface (50), second reflecting surface (51), the 3rd reflecting surface (52), the 4th reflecting surface (53) self-detection element (34) are set at least scatters to each side of deviation plate (40) with the shape that flank is arranged, and incident ray is reflected in detecing element (34).
It also comprises a step: be provided with two at least and reflect in each side of deviation plate (40), and incident ray is reflected in detecing element (34).
Description of drawings
Below in conjunction with drawings and Examples the present invention is done a detailed description, wherein:
Fig. 1 is the synoptic diagram of traditional detector reconnaissance range;
Fig. 2 is for finishing the skeleton diagram of combination in one embodiment of the invention;
Fig. 3 removes the skeleton diagram of panel for detector in one embodiment of the invention;
Fig. 4 is the constitutional diagram of the embodiment of the invention of Fig. 2;
Fig. 5 A is the front view of multiaspect curved lenses combination of banking up of the present invention;
Fig. 5 B is the rear view of the combination of curved lenses shown in Fig. 5 A;
Fig. 6 is the front view of signal deviation plate of the present invention;
The sectional view of Fig. 7 for being done along the 7-7 line among Fig. 6;
Fig. 8 A is curved lenses combination and the preferable in the present invention configuration schematic diagram of deviation plate, and incident ray passes through Ec among the figure;
Fig. 8 B is the schematic overview of detector of the present invention shown in Fig. 8 A and incident ray;
Fig. 8 C takes aim at the visual angle for incident ray of the present invention shown in Fig. 8 A, the complete list of detecting angle and scope;
Fig. 8 D is the view of taking aim at of an incident ray on the reflecting surface of expression flap;
Fig. 9 A is the front-view schematic diagram of curved lenses combination of the present invention with deviation plate advantageous configurations, and incident ray passes through Ed among the figure;
Fig. 9 B is the schematic overview of the present invention shown in Fig. 9 A and incident ray;
Fig. 9 C takes aim at the visual angle for incident ray shown in Fig. 9 A, the complete list of detecting angle and scope;
Figure 10 represents to play the formed suitable reconnaissance range in plural number detecting angle by the detecing element central shaft;
Figure 11 is the explanation synoptic diagram of reconnaissance range of the present invention.
Embodiment
Please consult Fig. 2, Fig. 3, and shown in Figure 4 simultaneously, ultrared sensing device of the present invention preferred embodiment mainly comprises a holder 10, a spherical 20, and a slew gear 23 that is configured in 20 of holder 10 and sphericals.Holder 10 has a pivot (not shown) in order to inserting a sleeve 11, and sleeve 11 can be turned round at the pivot ambient level.This slew gear 23 can turn round in slew gear 23 vertical plane on every side spherical 20.With these actions, detector can tune to the position that is suitable for signal detection most.
Spherical 20 includes an outer cover 21 and a panel 22, and outer cover 21 holds a support plate 30, the hook that stretches out plural number that replaces at the either side of the periphery of support plate 30.By being the front side that first turntable 32 is fixed in support plate 30, and second circuit dish 33 is fixed in the rear side of support plate 30.
The detecting of detector and treatment circuit assembly are to be installed on first and second turntable 32 and 33.Detecting comprises an existing current pyroelectric infrared detecing element 34 with treatment circuit, and two circuit to adjust devices 24 be to be to be installed on first turntable 32 with two adjustment screws 25 that are disposed at panel 22 bottoms.Adjust screw 25 whenever necessary in order to test or adjust circuit on first turntable 32.One signal deviation plate 40 is before being disposed at detecing element 34.Panel 22 is provided with a window 26, and there is groove 27 on its base.The edge of one curved lenses combination 28 is the vertical edges that are attached at window 26, and detecing element 34 is the focuses that are disposed at combination of lenses 28, and focal length is 31mm.
See also shown in Fig. 5 A, the 5B, the multiaspect of banking up curved lenses combination 28 is made up of 6 the regional 28A of Jiao, 28B, 28C and 28D.Each side of central focus zone has 2 places bank up first central focus zone 28A, second central focus zone 28B and 2 places bank up first side focal zone 28C, second side focal zone 28D.
In order to set up first central focus zone 28A, second central focus zone 28B that banks up at two places, must utilize the multiaspect lens 28a and the 28b of plural number, and have the relevant focus Ea and the Eb of plural number.These first central focus zones 28A, second central focus zone 28B have been contained self-detection element 34 axis of centres either sides and have been played 120 degree or 60 reconnaissance ranges of spending.The central focus zone 28A on top allows next ray far away, and direct the gathering is incident in detecing element 34 through suitable focus Ea is concentrated.Bottom center focal zone 28B allows then that nearby ray is directly assembled through suitable focus Eb to be incident in detecing element 34.
First side focal zone 28C that banks up in two places and second side focal zone 28D are each side that is disposed at first central focus zone 28A, second central focus zone 28B.Each first side focal zone 28C or second side focal zone 28D respectively include a first side lens 28c or the second side lens 28d with wide-angle of suitable single focus Ec or Ed.Being provided with single focus at the side lens of wide-angle is to be characteristic of the present invention, and this is that all be designed to must be through this point because of the incident ray beyond all 120 degree reconnaissance ranges.Be more cleverly, see also Fig. 8 A to C, and Fig. 9 A to C.The first side lens 28c of wide-angle, second side lens 28d provide concentrated infrared energy effectively than large tracts of land.The result will have more high strength through the incident ray of single focus Ec or Ed collection, and therefore the present invention can reach higher optics income.Focus Ec is for far coming incident ray set, and focus Ed then establishes for incident ray nearby.The first focal zone 28C of side or the second focal zone 28D are focused on the incident ray of coming greater than 120 degree scopes in its focus Ec (lens 28c) or Ed (lens 28d) and enter deviation plate 40 and reflect in detecing element 34 again separately.
Please consult Fig. 6 and Fig. 7 simultaneously, one to have the deviation plate 40 that self-detection element 34 central shafts form the flank shape mainly be to belong to two identical reflector elements 42 by an interface limit 44 symmetry division, and two unit intersect an obtuse angle.Reflector element 42 is formed with four reflectings surface 50,51,52,53.Reflecting surface 50 is positioned at 44 places, contiguous interface limit; Reflecting surface 51 is positioned under the reflecting surface 50; Reflecting surface 52 is positioned at after the reflecting surface 50.In addition, reflecting surface 50 and 52 end contact with each other; Reflecting surface 53 then is positioned at after the reflecting surface 52.
All reflectings surface 50 to 53 form obtuse angles mutually, and be formed with V-arrangement recess 54 between two reflector elements, have therefore just had four first reflecting surface 50 to the 4th reflectings surface 53 to be disposed at the left and right sides of reflector element 42.Such arrangement has compensated dead detecting angle, that is surpasses the zone of each 60 degree of detecing element 34 axis of centres left and right directions.By being the reconnaissance range that detector of the present invention is more traditional with broad.Conclusion is that reflector element 42 is used with the multiaspect curved lenses combination 28 of banking up, can get the above reconnaissance range of 120 degree.
Institute is noted that putting forward all angles in this instructions is to utilize software to do optical research and get, and for example the expert engineer adopts.In the actual application, these angles may some trickle correction or differences, have various parameters, for example the integrality on the electronics etc. and deciding.
See also shown in Fig. 8 A to D, for the first path S3, the second path S4, Third Road footpath S5, the 4th path S6 that far comes incident ray surpasses 120 degree reconnaissance ranges, the central detection area of detecing element 34 is e1, can directly be received incident infrared from any angle between S1 and S2 by detecing element 34 whereby.When incident ray from beyond the central detection area e1 time, signal deviation plate 40 is refracted into ray and enters detecing element 34.For example, incident infrared S3 (self-detection element 34 axis of centres play 64 degree) is by the single focus Ec of side lens 28c, and face 51 reflections are reflected.Incident infrared S4 (self-detection element 34 axis of centres rise 76 degree) and by single focus Ec, the face 50 that also is reflected reflects.Incident infrared S5 (self-detection element 34 axis of centres rise 90 degree) and by single focus Ec, face 52 reflections that are reflected, incident infrared S6 (self-detection element 34 axis of centres play 107 degree) and by single focus Ec, the face 53 that then is reflected reflects.As Fig. 9 A, B, C, for the path that contiguous incident ray S3 ', S4 ', S5 ', S6 ' are described surpasses 120 degree reconnaissance ranges.The central detection area of detecing element 34 is e1, can directly be received incident infrared from any angle between S1 ' and S2 ' by detecing element 34 whereby.When contiguous incident ray from beyond the central detection area e1 time, signal deviation plate 40 is refracted into ray and enters detecing element 34.For example, incident infrared S3 ' (self-detection element 34 axis of centres play 64 degree) is by the single focus Ed of side lens 28d, and face 51 reflections are reflected.Incident infrared S4 ' (self-detection element 34 axis of centres rise 76 degree) and by this single focus Ed, by 50 reflections of first reflecting surface.Incident infrared S5 ' (self-detection element 34 axis of centres play 90 degree) is then reflected by the 3rd reflecting surface 52 by this single focus Ed.Incident infrared S6 ' (self-detection element 34 axis of centres rise 107 degree) and by this single focus Ed, then by 53 reflections of the 4th reflecting surface.
As above-mentioned explanation of the present invention, be the shape that is formed with flank by four first reflectings surface 50, second reflecting surface 51, the 3rd reflecting surface 52, the 4th reflecting surface 53 in the both sides of deviation plate 40.Take aim at the angle of visual angle (α) for 53 of arbitrary incident ray and first reflecting surface 50, second reflecting surface 51, the 3rd reflecting surface 52, the 4th reflectings surface.Fig. 8 C and D be depicted as by Ea far come incident ray take aim at visual angle (α).Contiguous incident ray by Eb take aim at visual angle (α) then shown in Fig. 9 C.According to optical principle as shown in figure 10, incident angle (β) is that self-detection element 34 axis of centres play measurement, in like manner is applied to two kinds of incident rays.As shown in figure 11, reconnaissance range of the present invention is through looking into greater than the traditional detector shown in the figure, and Fig. 8 C or Fig. 9 maximum incident angle that C carries (β) are 107 degree, are equivalent to the reconnaissance range of 214 degree.
The method that strengthens reconnaissance range is described in detail in detail in addition.Be that the ultrared sensing device combines with the multiaspect curved lenses combination 28 of banking up, the first side lens 28c, the second side lens 28d that form first central focus zone 28A, second central focus zone 28B and four wide-angles comprising the plural number first multiaspect lens 28a, the second multiaspect lens 28b that are disposed at central portion form first side focal zone 28C, second side focal zone 28D, and a deviation plate 40, comprising plural number first reflecting surface 50, second reflecting surface 51, the 3rd reflecting surface 52, the 4th reflecting surface 53 that is positioned at before the detecing element 34 arranged.The step that comprises in this method has: two the first wide-angle side lens 28c that bank up, the second wide-angle side lens 28d each side in first central focus zone 28A, second central focus zone 28B is set; Assembling the far and near incident infrared that rises more than 120 degree from detecing element 34 central shafts shines in deviation plate 40 through the focus of suitable wide-angle first side lens 28c, second side lens 28d; Help this incident ray of deviation in detecing element 34 by suitable first reflecting surface 50 that contacts with this deviation plate 40, second reflecting surface 51, the 3rd reflecting surface 52, the 4th reflecting surface 53 again.In an embodiment, have at least the central shaft of four folding first reflectings surface 50, second reflecting surface 51, the 3rd reflecting surface 52, the 4th reflecting surface 53 self-detection elements 34 to scatter to each side of deviation plate 40, and incident ray is reflected in detecing element 34 with the shape that flank is arranged.This method that notes can provide at least two reflectings surface in deviation plate 40 each side.
Claims (9)
1. one kind wide scope ultrared sensing device comprises: a holder (10); One is installed on the spherical (20) on this holder (10); One first a turntable group (32) and a second circuit dish group (33) are to be disposed at this spherical (20) inside, become the part of detecting and treatment circuit; It is preceding that one multiaspect curved lenses combination (28) is installed on a detecing element (34); This ultrared sensing element (34) is positioned at the focus of this curved lenses combination (28); And a signal deviation plate (40) is incorporated into this detecing element (34) and is installed on this turntable (32), it is characterized in that;
Described multiaspect curved lenses combination (28) is made up of six focal zones, comprise that two bank up, the first central focus zone (28A) and the second central focus zone (28B), it is by two the first multiaspect lens (28a) and the second multiaspect lens (28b) and bank up in the first central focus zone (28A) and both sides, the second central focus zone (28B) respectively, first side focal zone (28C) and second side focal zone (28D) form this side focal zone (28C, be that each is by the first and second wide-angle side lens (28c 28D), 28d) constitute; And
Described signal deviation plate (40) main by two identical reflector elements (42) with interface limit (44) symmetry division, and formation V-arrangement recess (54), each reflector element (42) is provided with two or more first reflectings surface (50), second reflecting surface (51), the 3rd reflecting surface (52), the 4th reflecting surface (53), this reflecting surface is disperseed out by the axis of centres of detecing element (34), forms with all first reflectings surface (50), second reflecting surface (51), the 3rd reflecting surface (52), the 4th reflecting surface (53) and hands over obtuse-angulate flank shape mutually.
2. wide scope ultrared sensing device according to claim 1 is characterized in that, wherein said first reflecting surface (50) is positioned at contiguous this interface limit (44) and locates; Second reflecting surface (51) is positioned under this first reflecting surface (50); The 3rd reflecting surface (52) is positioned at this first reflecting surface (50) afterwards; The terminal part of this second reflecting surface (51), the 3rd reflecting surface (52) contacts with each other; The 4th reflecting surface (53) is positioned at the 3rd reflecting surface (52) afterwards.
3. wide scope ultrared sensing device according to claim 1, it is characterized in that, wherein said two side of banking up first focal zones (28C) are each sides that is disposed at the central focus zone with second focal zone (28D), and first focal zone (28C) of each side or second focal zone (28D) include one first wide-angle lens (28c) or second wide-angle lens (28d), respectively have a suitable single focus (Ec) or (Ed).
4. wide scope ultrared sensing device according to claim 3, it is characterized in that the either side that wherein said these first side focal zones (28C) or second focal zone (28D) are contained self-detection element (34) central shaft rises greater than 120 degree or greater than 60 reconnaissance ranges of spending.
5. wide scope ultrared sensing device according to claim 3, it is characterized in that wherein the focusing to far next incident infrared is to be finished by the suitable focus (Ea) of the first multiaspect lens (28a) or the suitable focus (Ec) of the first wide-angle side lens (28c).
6. wide scope ultrared sensing device according to claim 3, it is characterized in that wherein the focusing to contiguous incident infrared is to be finished by the suitable focus (Eb) of the second multiaspect lens (28b) or the suitable focus (Ed) of the second wide-angle side lens (28d).
7. method that strengthens ultrared sensing device reconnaissance range, it is to combine with the multiaspect combination of lenses of banking up (28), and described multiaspect combination of lenses (28) comprises first wide-angle lens (28c) of central authorities' first focal zones (28A), second focal zone (28B) and four wide-angles that two the first multiaspect lens (28a) that are disposed at central part, the second multiaspect lens (28b) form, side first focal zone (28C), second focal zone (28D) that second wide-angle lens (28d) forms; An and deviation plate (40), also include and be positioned at preceding first reflecting surface (50) of detecing element (34), second reflecting surface (51), the 3rd reflecting surface (52), the 4th reflecting surface (53), it is characterized in that the step that comprises has: two first wide-angle side lens of banking up (28c), the second wide-angle side lens (28d) are set in each side of central first focal zone (28A), second focal zone (28B);
Assemble the far and near incident infrared that rises more than 120 degree from detecing element (34) central shaft and be radiated at deviation plate (40) through the focus of suitable first wide-angle lens (28c), second wide-angle lens (28d); And
Again by with the assistance deviation of this contacted suitable first reflecting surface of deviation plate (40) (50), second reflecting surface (51), the 3rd reflecting surface (52), the 4th reflecting surface (53), and make this incident ray refraction in detecing element (34).
8. the method for increasing ultrared sensing device reconnaissance range according to claim 7, it is characterized in that, it also comprises a step: the central shaft that four first reflectings surface (50), second reflecting surface (51), the 3rd reflecting surface (52), the 4th reflecting surface (53) self-detection element (34) are set at least scatters to each side of deviation plate (40) with the shape that flank is arranged, and incident ray is reflected in detecing element (34).
9. the method for increasing ultrared sensing device reconnaissance range according to claim 7 is characterized in that, it also comprises a step and is: be provided with two at least and reflect in each side of deviation plate (40), and incident ray is reflected in detecing element (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011156341A CN1190668C (en) | 2001-04-28 | 2001-04-28 | Wide-range reconnaissance device and its reconnaissance range extending method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011156341A CN1190668C (en) | 2001-04-28 | 2001-04-28 | Wide-range reconnaissance device and its reconnaissance range extending method |
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| Publication Number | Publication Date |
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| CN1384374A CN1384374A (en) | 2002-12-11 |
| CN1190668C true CN1190668C (en) | 2005-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB011156341A Expired - Fee Related CN1190668C (en) | 2001-04-28 | 2001-04-28 | Wide-range reconnaissance device and its reconnaissance range extending method |
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| Country | Link |
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| CN (1) | CN1190668C (en) |
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