CN101191837B - Signal detecting device for automatic door control system - Google Patents
Signal detecting device for automatic door control system Download PDFInfo
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- CN101191837B CN101191837B CN2006101459299A CN200610145929A CN101191837B CN 101191837 B CN101191837 B CN 101191837B CN 2006101459299 A CN2006101459299 A CN 2006101459299A CN 200610145929 A CN200610145929 A CN 200610145929A CN 101191837 B CN101191837 B CN 101191837B
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Abstract
The invention relates to a signal detecting device used in a control system of an automatic door, comprising a waveguide body, a coupling element extending into the waveguide body, a filtering element, an antenna connected with the waveguide body, a shorting plate and an oscillator and a mixer which are arranged in the waveguide body, wherein the waveguide body is provided inside with a waveguide cavity which is a cube, the oscillator and the mixer are flexibly arranged on the right side wall and the left side wall of the waveguide body respectively. The front ends of the filtering element and the coupling element are positioned in the waveguide cavity and respectively on the top wall and the bottom wall of the waveguide cavity. The invention adopts a millimeter wave element and makes the structure of the oscillator, the mixer, the coupling element and the filtering element inside the waveguide cavity more compact by changing the structure of the waveguide cavity. With the reduced volume, the depths of the oscillator and the mixer in the waveguide cavity can be adjusted by tube supports in threaded connection, the frequency and power of the oscillator can also be adjusted, and the efficiency and the receiving sensitivity of the mixer are improved.
Description
Technical field
The present invention relates to a kind of signal detecting device that is used for automatic door control system.
Background technology
At present, the signal detecting device that uses in automatic door control system adopts following two kinds of technical schemes mostly: first kind is infrared eye, utilizes infrared signature to obtain target information.No matter whether personnel move, as long as be in the sweep limit of infrared eye, it all can induction targets (human body) information, thereby produce the trigger pip of opening automatically-controlled door.The shortcoming of this technical scheme is that the reaction velocity of infrared acquisition is slower, be applicable to the place that costive personnel come in and go out, and this infrared acquisition is affected by environment bigger, and as temperature, humidity, smog, dust etc., long-term use can produce misoperation or be failure to actuate.In addition, if automatically-controlled door is accepted the trigger pip overlong time, controller can think that obstacle appears in signal input system, and if automatically-controlled door be held open overlong time, also can produce infringement to electric component.Because above-mentioned shortcoming seldom adopts in the present international automatic door control system.
Another is a microwave detector, utilize the microwave reflection characteristic to obtain target information, utilize Doppler's principle to obtain target travel information simultaneously, that is: by the microwave radio signal and the difference frequency signal that the echoed signal mixing mutually of the moving target of reception is produced of emission, obtained the movable information of target (human body).This technical scheme reaction velocity is fast, is applicable to the place that the normal personnel of the speed of travel pass through.Characteristics are that detector work is subjected to the influence of environment on every side such as temperature, air flow, dust, humidity, smog and noise hardly.The anti-Radio frequency interference (RFI) ability of microwave detector is strong, and output power is low, and human body is not constituted harm.And in case near the personnel the door do not find out the door and after the transfixion, detector just no longer the reaction, automatically-controlled door will be closed, the opposite house machine has the certain protection effect.Because this scheme has above-mentioned advantage, and compares smaller volume with infrared eye, cost reduces, and reacts sensitiveer, comparatively generally adopts in existing automatic door control system.
In existing microwave detector, with the microwave detector of chamber mixing because oscillator, frequency mixer are placed in the wave-guide cavity wave, though help reducing volume, yet the corresponding problem of bringing is the frequency inconvenient debugging, complex structure can't reach the requirement of high overload.The patent No. of announcing in the date as Patent Office of the People's Republic of China is: 86100585, and patent name is: in the patent of invention of " microwave block of Doppler radar ", disclose the microwave block of Doppler radar that a kind of mixer tube and oscillating tube are positioned at same wave-guide cavity wave.This assembly adopts adjustable probe rod type frequency mixer, and the degree of depth of inserting in the waveguide can be regulated, thereby can change the efficient of mixing.The shortcoming of this assembly is that the waveguide between interior mixer tube of assembly and the oscillator needs certain length to satisfy not direct-coupled condition, and volume can't reduce; Oscillator is connected across in the waveguide cavity regularly, and its frequency needs other expansion screw tuning, complex structure, inconvenient debugging; And because complex structure, adjustable part is too much, is difficult to satisfy the more requirement of high band frequency range; It is 9.3GHz and 24.125GHz that existing detector adopts the working frequency range of microwave.As further raising wave band, can improve sensitivity and reaction velocity.
Summary of the invention
In order to solve above-mentioned problems of the prior art and deficiency, the invention provides a kind of signal receiving/transmission device that is used for automatic door control system.
Main technical schemes of the present invention is: a kind of signal detecting device that is used for automatic door control system, comprise waveguide body, be positioned at oscillator, the frequency mixer of described waveguide body, stretch into coupling element, filter element in the described waveguide body, and the antenna that is connected with described waveguide body, short board, described waveguide body inside has a wave-guide cavity wave, described wave-guide cavity wave is a cube, and described oscillator, frequency mixer be mobilizable to lay respectively on the right side wall and left side wall of described wave-guide cavity wave; The front end of described filter element, coupling element is positioned at described wave-guide cavity wave, and on the relative roof and diapire that lay respectively at described wave-guide cavity wave.
The present invention also adopts following attached technical scheme: be positioned at described oscillator, frequency mixer on described wave-guide cavity wave left side wall and the right side wall, be positioned on the same axial direction.
Have first threaded hole, second threaded hole that the axis of symmetry position with described wave-guide cavity wave right side wall and left side wall connects on the described waveguide body, described first threaded hole, second threaded hole are threaded mutually with first base and second base respectively, described frequency mixer is fixed in the front end of described first base, and described oscillator is fixed in the front end of described second base.
Described coupling element and described filter element are the standard feedthrough capacitor, on described waveguide body, have first through hole, second through hole that roof and diapire with described waveguide chamber connect, described coupling element places described first through hole, its front end stretches in the described wave-guide cavity wave, described filter element places described second through hole, and its front end stretches in the described wave-guide cavity wave.
Described waveguide body is a cube, connects described short board on the front end face of described waveguide body, connects described signal transmit/receive antenna on relative rear end face.
In described wave-guide cavity wave, be filled with specific inductive capacity a
1Vibration-absorptive material between 1.0～1.2.
Described vibration-absorptive material is a kind of graininess elastoplast foam.
The size of described wave-guide cavity wave left side wall, right side wall and roof, diapire is not more than: 8.00mm * 4.00mm.
Described wave-guide cavity wave left side wall, right side wall and roof, diapire are of a size of: 7.10mm * 3.55mm.
Be positioned at described coupling element, filter element on described wave-guide cavity wave roof and the diapire, be positioned in the radial direction same.
Adopt the beneficial effect that the present invention brought: (1) the present invention is made as cube with the wave-guide cavity wave in the waveguide, and oscillator and frequency mixer be located at respectively on the left and right sidewall of wave-guide cavity wave, and be on the same axial direction, coupling element and filter element are located at respectively on the roof and diapire of wave-guide cavity wave, inner structure is simplified compacter, volume reduces, and weight saving is easy to produce in batches.(2) base by being threaded, scalable oscillator and frequency mixer go deep into the degree of depth in the wave-guide cavity wave, debugging is convenient, not only can change the frequency and the power of oscillator, and can change the deviator and the receiving sensitivity of frequency mixer, under the situation that volume reduces, debugging is convenient, efficient improves, and power consumption reduces.(3) in wave-guide cavity wave, fill special vibration-absorptive material, promptly do not influence electrical property, can bear the above acceleration that impacts of 25000g again.(4) the present invention adopts the millimeter wave band signal, and wave beam is narrower than microwave, has wideer bandwidth, and frequency range can reach 30～300GHz, and sensitivity is higher, and reaction velocity is faster, has round-the-clock characteristic.
Figure of description
Fig. 1 is the Facad structure synoptic diagram of waveguide in the signal detecting device of the present invention;
Fig. 2 is that the A-A of Fig. 1 is to cut-open view;
Fig. 3 is that the B-B of Fig. 1 is to cut-open view;
Fig. 4 is the front section view of signal detecting device of the present invention;
Fig. 5 is the side schematic view of signal detecting device of the present invention;
Fig. 6 millimeter wave fuze tuner of the present invention schematic equivalent circuit;
Embodiment
Below in conjunction with accompanying drawing the present invention is done further detailed description:
As Fig. 1 to a kind of signal detecting device that is used for automatic door control system shown in Figure 5, comprise waveguide body 1, be positioned at oscillator 12, the frequency mixer 13 of waveguide body, stretch into coupling element 14, filter element 15 in the waveguide body, and the antenna 2 that is connected with waveguide body, short board 3, waveguide body 1 inside has a wave-guide cavity wave 11, wave-guide cavity wave 11 is a cube, and oscillator 12, frequency mixer 13 be mobilizable to lay respectively on the right side wall and left side wall of wave-guide cavity wave 11; The front end of filter element 15, coupling element 14 is positioned at wave-guide cavity wave 11, and on the relative roof and diapire that lay respectively at wave-guide cavity wave 11.
The size of wave-guide cavity wave 11 left side walls, right side wall and roof, diapire is not more than: 8.00mm * 4.00mm.In the present embodiment, wave-guide cavity wave 11 left side walls, right side wall and roof, diapire are of a size of: 7.10mm * 3.55mm.As Fig. 2, Fig. 3, shown in Figure 4, have first threaded hole 16, second threaded hole 16 ' that the axis of symmetry position with wave-guide cavity wave 11 right side walls and left side wall connects on the waveguide body 1, first threaded hole 16, second threaded hole 16 ' are threaded mutually with first base 17 and second base 18 respectively, frequency mixer 13 is fixed in the front end of first base 17, and oscillator 12 is fixed in the front end of second base 18.So just feasible oscillator 12, the frequency mixer 13 that is positioned on wave-guide cavity wave 11 left side walls and the right side wall, be positioned on the same axial direction, can regulate oscillator 12 and frequency mixer 13 by the turn base in use and stretch into the degree of depth in the wave-guide cavity wave, realize the adjustable of frequency and power.Coupling element 14 all adopts the standard feedthrough capacitor in the present embodiment with filter element 15, on waveguide body 1, have first through hole 19, second through hole 19 ' that roof and diapire with waveguide chamber 11 connect, coupling element 14 places first through hole 19, its front end stretches in the wave-guide cavity wave 11, filter element 15 places second through hole 19 ', and its front end stretches in the wave-guide cavity wave 11.In order to realize the technical program, require the coupling element 14 and the front end of filter element 15 to stretch in the wave-guide cavity wave, be not strict with as for coupling element 14 and other parts of filter element 15, can integral body stretch into fully in the waveguide body 1, but be exposed at outside the waveguide body 1 outside some yet.In the middle of present embodiment, coupling element 14 stretches in the wave-guide cavity wave 11 with the front end of filter element 15, and the other end is then outer to be exposed at outside the waveguide body 1.
As Fig. 4, shown in Figure 5, in the present embodiment, wave-guide cavity wave 11 be shaped as cube, and do not have specific (special) requirements for the shape of waveguide body 1, for the convenience of processing and manufacturing, the shape of the waveguide body 1 of present embodiment also adopts cube.On the front end face of waveguide body 1, be connected with short board 3, on relative rear end face, connect antenna 2.
As shown in Figure 6, oscillating tube 12 and mixer tube 13 are positioned on wave-guide cavity wave 11 right side walls and the left side wall, and be in same axial direction, vertically at a distance of about λ/2 (λ is an operation wavelength), coupling element 14 is welded to each other with frequency mixer 13, filter element 15 is welded to each other with oscillator 12, one end face short circuit of waveguide body 1, the other end is power output, and the Doppler signal on the feed of oscillating tube 12 and the mixer tube 13 extracts and all undertaken by filter element 15 and the coupling element 14 that is positioned on the wave-guide cavity wave 11 respectively.What the AB end connected among Fig. 6 is the equivalent electrical circuit of body effect tube, and what the CD two ends connected is the equivalent electrical circuit of mixer tube 13.Oscillating tube 12, wave-guide cavity wave 11 and short circuit face etc. constitute a resonant circuit, when satisfying starting condition for oscillation, produce vibration, the power that vibration produces is to external radiation, and wherein sub-fraction is added to the mixer tube 13 of CD end, is equivalent to offer a local oscillator voltage of mixer tube 13.The present invention adopts the millimeter wave band signal, and wave beam is narrower than microwave, has wideer bandwidth, and frequency range can reach 30～300GHz, and sensitivity significantly improves, and reaction velocity is accelerated, and has round-the-clock characteristic.In the present embodiment, frequency of operation is between 32GHz～39GHz.The echoed signal that runs into the target generation that transmits is added to again on the mixer tube 13, and both mixing produce Doppler signals.Owing in wave-guide cavity wave 11, have oscillating tube 12 and mixer tube 13 simultaneously, so oscillation frequency, hunting power and mixing sensitivity all interact, in the debug process of present embodiment, regulate oscillating tube 12 and the position stretched into of mixer tube 13 in wave-guide cavity wave 11, make its emissive power and mixing sensitivity reach optimum condition.In order to strengthen anti-seismic performance, present embodiment also is filled with specific inductive capacity a in wave-guide cavity wave 11
1Vibration-absorptive material 111 between 1.0～1.2, this vibration-absorptive material 111 are a kind of graininess elastoplast foam.
Claims (10)
1. signal detecting device that is used for automatic door control system, comprise waveguide body (1), be positioned at the oscillator (12) of described waveguide body, frequency mixer (13), stretch into the coupling element (14) in the described waveguide body, filter element (15), and the antenna (2) that is connected with described waveguide body, short board (3), described waveguide body (1) inside has a wave-guide cavity wave (11), it is characterized in that: described wave-guide cavity wave (11) is a cube, described oscillator (12), frequency mixer (13) is mobilizable to lay respectively on the right side wall and left side wall of described wave-guide cavity wave (11); The front end of described filter element (15), coupling element (14) is positioned at described wave-guide cavity wave (11), and on the relative roof and diapire that lay respectively at described wave-guide cavity wave (11).
2. signal detecting device according to claim 1 is characterized in that: be positioned at described oscillator (12), frequency mixer (13) on described wave-guide cavity wave (11) left side wall and the right side wall, be positioned on the same axial direction.
3. signal detecting device according to claim 1 and 2, it is characterized in that: have first threaded hole (16), second threaded hole (16 ') that the axis of symmetry position with described wave-guide cavity wave (11) right side wall and left side wall connects on the described waveguide body (1), described first threaded hole (16), second threaded hole (16 ') are threaded mutually with first base (17) and second base (18) respectively, described frequency mixer (13) is fixed in the front end of described first base (17), and described oscillator (12) is fixed in the front end of described second base (18).
4. signal detecting device according to claim 3, it is characterized in that: described coupling element (14) is the standard feedthrough capacitor with described filter element (15), on described waveguide body (1), have first through hole (19), second through hole (19 ') that roof and diapire with described waveguide chamber (11) connect, described coupling element (14) places described first through hole (19), its front end stretches in the described wave-guide cavity wave (11), described filter element (15) places described second through hole (19 '), and its front end stretches in the described wave-guide cavity wave (11).
5. signal detecting device according to claim 3, it is characterized in that: described waveguide body (1) is cube, on the front end face of described waveguide body (1), connect described short board (3), on relative rear end face, connect described signal transmit/receive antenna (2).
6. signal detecting device according to claim 3 is characterized in that: be filled with specific inductive capacity a in described wave-guide cavity wave (11)
1Vibration-absorptive material between 1.0～1.2 (111).
7. signal detecting device according to claim 6 is characterized in that: described vibration-absorptive material (111) is a kind of graininess elastoplast foam.
8. signal detecting device according to claim 3 is characterized in that: the size of described wave-guide cavity wave (11) left side wall, right side wall and roof, diapire is not more than: 8.00mm * 4.00mm.
9. signal detecting device according to claim 9 is characterized in that: described wave-guide cavity wave (11) left side wall, right side wall and roof, diapire are of a size of: 7.10mm * 3.55mm.
10. signal detecting device according to claim 3 is characterized in that: be positioned at described coupling element (14), filter element (15) on described wave-guide cavity wave (11) roof and the diapire, be positioned in the radial direction same.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2006101459299A CN101191837B (en) | 2006-11-23 | 2006-11-23 | Signal detecting device for automatic door control system |
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| CN2006101459299A CN101191837B (en) | 2006-11-23 | 2006-11-23 | Signal detecting device for automatic door control system |
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| CN101191837A CN101191837A (en) | 2008-06-04 |
| CN101191837B true CN101191837B (en) | 2010-04-14 |
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| JP6949851B2 (en) * | 2016-08-29 | 2021-10-13 | ナブテスコ株式会社 | Sensor detection area adjustment system, automatic door sensor, marker and sensor detection area adjustment method |
| CN106501648A (en) * | 2016-11-09 | 2017-03-15 | 苏州纽迈分析仪器股份有限公司 | A kind of improved search coil |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN200992888Y (en) * | 2006-11-23 | 2007-12-19 | 林新达 | Signal detecting device for automatic door control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN200992888Y (en) * | 2006-11-23 | 2007-12-19 | 林新达 | Signal detecting device for automatic door control system |
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Owner name: ZHONGSHAN DINGGU METAL PRODUCTS CO., LTD. Free format text: FORMER OWNER: LIN XINDA Effective date: 20100526 |
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Effective date of registration: 20100526 Address after: 528425 Guangdong city of Zhongshan Province Dongfeng Town East Industrial Park No. 7-2 and spike Patentee after: Zhongshan Dinggu Metal Products Co., Ltd. Address before: 528425 Guangdong city of Zhongshan Province Dongfeng Town East Industrial Park No. 7-2 and spike Patentee before: Lin Xinda |
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Owner name: GUANGDONG DINGGU JICHUANG HOUSEHOLD CO., LTD. Free format text: FORMER NAME: ZHONGSHAN WANGU METALLIC PRODUCTS CO., LTD. |
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Address after: Three road 528425 Guangdong city of Zhongshan province Dong Feng Zhen Dong Fu No. 429 Patentee after: Guangdong Topstrong Gingo Furniture Co., Ltd. Address before: 528425 Guangdong city of Zhongshan Province Dongfeng Town East Industrial Park No. 7-2 and spike Patentee before: Zhongshan Dinggu Metal Products Co., Ltd. |