CN203053849U - Anti-interference scattering low-visibility early-warning detector - Google Patents
Anti-interference scattering low-visibility early-warning detector Download PDFInfo
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- CN203053849U CN203053849U CN 201320070375 CN201320070375U CN203053849U CN 203053849 U CN203053849 U CN 203053849U CN 201320070375 CN201320070375 CN 201320070375 CN 201320070375 U CN201320070375 U CN 201320070375U CN 203053849 U CN203053849 U CN 203053849U
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Abstract
The utility model provides an anti-interference scattering low-visibility early-warning detector, which mainly consists of an infrared transmitting device, an infrared receiving device, a receiving signal conditioning module, a control module, an early warning data output module and a power supply module, wherein both a lens window of the infrared transmitting device and a lens window of the infrared receiving device are respectively provided with temperature control heaters, and an optical filter of the lens is a narrow-band interference optical filter; a temperature sensor and a heating device are arranged in a cavity of a microprocessor of the control module; the transmitting device and the receiving device are arranged at two ends of a crossbeam rod with a bending angle on a support, and the crossbeam forms an angle with the horizontal plane and is inclined to the ground. The anti-interference scattering low-visibility early-warning detector is favorable for resisting the interference factor caused by the external low temperature and inhibiting the measurement error caused by the temperature drifting of elements inside the microprocessor; and moreover, a transmitted beam enters the receiving device at a scattering angle of 35 DEG, and the stability and reliability of the system can be improved; and the signal-to-noise ratio can be improved through the amplification of an effective signal, and the measurement precision of the instrument can be further improved.
Description
Technical field
The utility model relates to ray machine electricity one accurate detector device, particularly is referred to as diffuse transmission type low visibility pre-warning detector, specifically a kind of anti-interference diffuse transmission type low visibility pre-warning detector.
Background technology
The visibility detector that had appeared on the market already be mainly used in observing and predicting atmosphere " visibility " " low visibility ".Particularly observing and predicting of " low visibility " can make people in time take correct counter-measure, effectively reduces the various losses that low visibility weather brings to society.The current visibility detector is forecast by meteorological observation that widely communications and transportation such as highway, navigation, aviation and military affairs, environmental monitoring department use.
Above-mentioned visibility detecting instrument based on wire transmission, because expanded compatibility is poor, and the input that must rely on the capital construction aspect, just can only just can set up use in the place with wire communication networking, therefore there is zonal low visibility early warning blind area unavoidably.At above-mentioned existing problems, the applicant has proposed a kind of diffuse transmission type low visibility pre-warning detector in the recent period, this instrument can carry out wired, wireless connections with on-the-spot early warning actuating equipments such as changeable message signs, road signs easily as the intelligent facility of low visibility early warning system front end; Also can set up long distance wireless with the commander Surveillance center in no wire communication networking zone and be connected, improve early warning and detected coverage and density; Can issue real-time information in the use, be convenient to the inquiry of historical data again.This instrument has good social benefit and wide industrialization prospect.Yet the applicant finds in practice test, and described diffuse transmission type low visibility pre-warning detector remains in weak point at aspect such as anti-interference, and it is in addition perfect to be further improved.
Summary of the invention
The utility model proposes a kind of anti-interference diffuse transmission type low visibility pre-warning detector, purpose is by described partial structurtes of disturbing diffuse transmission type low visibility pre-warning detector are improved, to realize that these facility have better resisting interference, to make low energy see that observing and predicting function is further improved and promote.
Technical solution of the present utility model
The utility model mainly is made up of infrared light emitter and infrared light receiving trap, receiving end signal conditioning module, control module, early warning data outputting module and power module.
The optical system lens window of described infrared light emitter and infrared light receiving trap is provided with Temperature controlled heater.
Be provided with temperature sensor and heating arrangement in the microprocessor cavity of described control module.
The optical filter of the camera lens of described infrared light emitter and infrared light receiving trap optical system is spike interference filter.
Described infrared light emitter and infrared light receiving trap are arranged on the support, and described support reaches the crossbeam that is connected with the column top by column and constitutes; Crossbeam constitutes 35 ° of angles in the symmetry bending of column top, and the crossbeam bar tilts earthward horizontal by 17.5 ° of angles; The be placed in two ends of crossbeam of described emitter and receiving trap.Described crossbeam length overall 1.2m.
Described receiving end signal conditioning module, is made up of preposition electric amplifier, high-order band-pass filters, lock-in amplifier and a back level low-pass filter, designing the size of current that is input to prime amplifier is 5 ~ 500nA; Input signal data sampling effective voltage amplitude range is 0～3V, and the overall enlargement factor of signal conditioning circuit is 5 * 10
6
Every road power supply input of described power module uses inductance fiilter LC to carry out isolation filter, and the filter capacitor of input and output all adopts aluminium electroloysis or the tantalum electric capacity of low ESR.
Adopt light-coupled isolation between the signal wire between described each module.
The beneficial effects of the utility model
The multiple Anti-Jamming Technique that the utility model adopts is conducive to resist emission, the receiving trap optical system comes from the disturbing factor that extraneous low temperature brings; Be conducive to suppress the measuring error that the temperature drift of components and parts in the microprocessor causes, guaranteed that the emission light beam enters receiving trap with 35 ° of scattering angle, has improved stability and the reliability of system works; The amplification of signal condition useful signal has improved signal to noise ratio (S/N ratio), has further promoted the precision of observing and predicting of instrument.
Description of drawings
Accompanying drawing 1 is that the utility model basic composition part connects block diagram;
Accompanying drawing 2 is the connection diagram of the utility model infrared light emitter, infrared light receiving trap, receiving end signal conditioning module, control module component parts;
Accompanying drawing 3 is the rack-mount structural representation of the utility model infrared light emitter and infrared light receiving trap.
Embodiment
As shown in Figure 1,
The utility model is identical with diffuse transmission type low visibility pre-warning detector, constitutes by basic composition parts such as infrared light emitter 1, infrared light receiving trap 2, receiving end signal conditioning module 3, control module 4, early warning data outputting module 5 and power modules 6.
As shown in Figure 2,
The optical system lens window of described infrared light emitter and infrared light receiving trap is provided with Temperature controlled heater.Can make camera lens window eyeglass temperature a little more than environment temperature, influence correct detection with the generation of avoiding frosting, dewfall;
Be provided with temperature sensor and heating arrangement in the described control module microprocessor cavity.Temperature sensor carries out the temperature real-time data acquisition, heating arrangement can open or cut out shape according to variation or the work of environment temperature, in order to reduce temperature change, suppress because the measuring error that the temperature drift of components and parts causes, can further improve stability and the reliability of system works.
As shown in Figure 3,
Described infrared light emitter 1 is arranged on the support 7 with infrared light receiving trap 2, and described support is made of column 71 and crossbeam 72; Crossbeam constitutes 35 ° of angles (not giving expression among the figure) in the symmetry bending of column top, and the crossbeam bar tilts earthward horizontal by 17.5 ° of angles; With the pollution to optical system lens of minimizing sunlight direct projection instrument, the reflection interference of resisting crossbeam and rainwater, and guarantee that the emission light beam enters receiving trap with 35 ° of scattering angle.
In addition, the overall enlargement factor setting of the utility model receiving end signal conditioning module input current size, effective voltage amplitude range, signal conditioning circuit, and the filtering components and parts of power module input and output, and adopt anti-interference behave such as light-coupled isolation, all expressions among the figure between the signal wire between each module.
The utility model has good anti-interference effect after testing, has improved and has observed and predicted precision.
Claims (5)
1. anti-interference diffuse transmission type low visibility pre-warning detector, mainly be made up of infrared light emitter and infrared light receiving trap, receiving end signal conditioning module, control module, early warning data outputting module and power module, it is characterized in that: the optical system lens window of described infrared light emitter and infrared light receiving trap is provided with Temperature controlled heater; Be provided with temperature sensor and heating arrangement in the microprocessor cavity of described control module; The optical filter of the camera lens of described infrared light emitter and infrared light receiving trap optical system is spike interference filter.
2. a kind of anti-interference diffuse transmission type low visibility pre-warning detector according to claim 1, it is characterized in that: described infrared light emitter and infrared light receiving trap are arranged on the support, and described support is made of column and the crossbeam that is connected with the column top; Crossbeam constitutes 35 ° of angles in the symmetry bending of column top, and the crossbeam bar tilts earthward horizontal by 17.5 ° of angles; The be placed in two ends of crossbeam of described emitter and receiving trap.
3. a kind of anti-interference diffuse transmission type low visibility pre-warning detector according to claim 1, it is characterized in that: described receiving end signal conditioning module, is made up of preposition electric amplifier, high-order band-pass filters, lock-in amplifier and a back level low-pass filter, designing the size of current that is input to prime amplifier is 5 ~ 500nA; Input signal data sampling effective voltage amplitude range is 0～3V, and the overall enlargement factor of signal conditioning circuit is 5 * 10
6
4. a kind of anti-interference diffuse transmission type low visibility pre-warning detector according to claim 1, it is characterized in that: every road power supply input of described power module, use inductance fiilter LC to carry out isolation filter, the filter capacitor of input and output all adopts aluminium electroloysis or the tantalum electric capacity of low ESR.
5. a kind of anti-interference diffuse transmission type low visibility pre-warning detector according to claim 1 is characterized in that: adopt light-coupled isolation between the signal wire between described each module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320070375 CN203053849U (en) | 2013-02-07 | 2013-02-07 | Anti-interference scattering low-visibility early-warning detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320070375 CN203053849U (en) | 2013-02-07 | 2013-02-07 | Anti-interference scattering low-visibility early-warning detector |
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| Publication Number | Publication Date |
|---|---|
| CN203053849U true CN203053849U (en) | 2013-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320070375 Expired - Fee Related CN203053849U (en) | 2013-02-07 | 2013-02-07 | Anti-interference scattering low-visibility early-warning detector |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132915A (en) * | 2014-08-08 | 2014-11-05 | 南京格术光电技术有限公司 | Small high-performance scattering-type visibility measuring device and measuring method thereof |
| CN110206597A (en) * | 2019-06-26 | 2019-09-06 | 广东核电合营有限公司 | A kind of steam turbine protection circuit and device |
| CN113064214A (en) * | 2021-04-25 | 2021-07-02 | 无锡市星迪仪器有限公司 | Portable camouflage effect detector and control device thereof |
-
2013
- 2013-02-07 CN CN 201320070375 patent/CN203053849U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132915A (en) * | 2014-08-08 | 2014-11-05 | 南京格术光电技术有限公司 | Small high-performance scattering-type visibility measuring device and measuring method thereof |
| CN110206597A (en) * | 2019-06-26 | 2019-09-06 | 广东核电合营有限公司 | A kind of steam turbine protection circuit and device |
| CN110206597B (en) * | 2019-06-26 | 2022-06-10 | 广东核电合营有限公司 | Steam turbine protection circuit and device |
| CN113064214A (en) * | 2021-04-25 | 2021-07-02 | 无锡市星迪仪器有限公司 | Portable camouflage effect detector and control device thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20140207 |