CN100449331C - Grid shaped highly sensitive detector for rain and snow - Google Patents
Grid shaped highly sensitive detector for rain and snow Download PDFInfo
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- CN100449331C CN100449331C CNB2004100183920A CN200410018392A CN100449331C CN 100449331 C CN100449331 C CN 100449331C CN B2004100183920 A CNB2004100183920 A CN B2004100183920A CN 200410018392 A CN200410018392 A CN 200410018392A CN 100449331 C CN100449331 C CN 100449331C
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- palisade
- rain
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Abstract
The present invention discloses a grid-shaped highly sensitive detector for rain and snow, which is provided with a gold coating or plating grid-shaped film rain sensitive plate which is connected with an anticorrosive combined metal heating plate by stainless steel connecting screws. The bottom of the anticorrosive combined metal heating plate is provided with a groove, and a rubber sealing strip is embedded in the groove. The outer side of the groove at the bottom of the anticorrosive combined metal heating plate is provided with installation screws, and is connected with a stainless steel connection box. The constant temperature of the anticorrosive combined metal heating plate is controlled by a miniature bimetallic on-off temperature controller which is installed at the bottom. Connection terminals are arranged in the stainless steel connection box. A stainless steel shaft sleeve is welded on a bottom plate of the stainless steel connection box. The stainless steel shaft sleeve is connected with a stainless steel supporting rod and a stainless steel base. The present invention has the advantages that 1) the present invention lowest can sense a single raindrop of phi 0.3mm, and can sufficiently meet the demand of environmental monitoring; 2) the present invention has very strong interference rejection to fog, frost and dew; 3) the response time of the present invention is short, and the present invention can respond to a detected raindrop within the time of 0.1 second.
Description
Technical field
The present invention relates to the highly sensitive sleet detecting device of a kind of palisade.Be mainly used in numerous areas such as meteorologic parameter collection, environment protection and monitoring, agricultural production arrangement, traffic management.Special in the environment nuclear radiation monitoring of nuclear power station, owing to the reason of rainfall can cause that the radon value increases sharply, influenced the detection of γ radiation dose rate, so rainfall is very big to the detection influence of γ radiation dose rate.Whether the rising that therefore must accurately know the γ radiation dose rate is owing to the caused variation of rainfall, or caused variation is leaked in the nuclear radiation of nuclear power station.
Background technology
Find out rainfall at present except rain gage, without any detection means, and rain gage can only be in light rain that continues or intermittently moderate rain, use when raining heavyly, its starting point sensitivity is the average rainfall of 0.1mm/min, when need being accumulate to certain value with rainfall, it just can export a pulse signal, its principle of work is to adopt the tipping bucket structure when the raindrop in the tipping bucket are filled it up with, and it exports a pulse signal; For drizzle even drizzle or light rain intermittently, it is perception immediately at all, even and the γ radiation dose rate has slight drizzle also can cause the rapid rising of environment γ radiation dose rate.
Summary of the invention
The purpose of this invention is to provide the highly sensitive sleet detecting device of a kind of palisade.
It has covers gold or gold-plated palisade rain sensitive board, covering gold or gold-plated palisade rain sensitive board is connected with anticorrosion combination metal heater plate by the stainless steel attachment screw, the bottom of anticorrosion combination metal heater plate has groove, groove is embedded with rubber weather strip, the outside at the bottom groove of anticorrosion combination metal heater plate is provided with mounting screw, and be connected with the stainless steel terminal box, the thermostatic control of anticorrosion combination metal heater plate is controlled by the miniature bimetal release type temperature controller that is installed in the bottom, in the stainless steel terminal box connection terminal is installed, be welded with the stainless steel axle sleeve on the stainless steel terminal box base plate, the stainless steel axle sleeve links to each other with the stainless steel support bar and is fastening by screw, stainless steel support bar bottom is welded with stainless steel base, base and floor mounted screw retention.
Advantage of the present invention: 1) single the raindrop of minimum energy perception Φ 0.3mm are enough to satisfy the environmental monitoring requirement; 2) mist, frost, dew there is very strong antijamming capability; 3) response time quick, can in 0.1 second time, react to detected raindrop; 4) can detect drizzle, drizzle or raindrop, and react the rainy intermittence of right＞3 minute; 5) can operation continuously in open-air 24 hours throughout the year.
Description of drawings
Fig. 1 is that golden palisade rain sensitive board structural representation is covered in the present invention;
Fig. 2 is the highly sensitive sleet detector circuit of a palisade schematic diagram;
Fig. 3 is a sense rain signal deteching circuit excitation sources waveform synoptic diagram;
Fig. 4 is a heating board structure structural representation of the present invention;
Fig. 5 is the highly sensitive sleet detector arrangement of a palisade synoptic diagram.
Embodiment
The highly sensitive sleet detecting device of palisade have cover the gold or gold-plated palisade rain sensitive board 8, covering golden or gold-plated palisade rain sensitive board 8 is connected with anticorrosion combination metal heater plate 5 by stainless steel attachment screw 7, the bottom of anticorrosion combination metal heater plate 5 has groove, groove is embedded with rubber weather strip 4, the outside at the bottom groove of anticorrosion combination metal heater plate 5 is provided with mounting screw, and be connected with stainless steel terminal box 2, the thermostatic control of anticorrosion combination metal heater plate is controlled by the miniature bimetal release type temperature controller 9 that is installed in the bottom, connection terminal 3 is installed in the stainless steel terminal box 2, be welded with stainless steel axle sleeve 1 on stainless steel terminal box 2 base plates, stainless steel axle sleeve 1 links to each other with stainless steel support bar 10 and is fastening by screw 12, stainless steel support bar 10 bottoms are welded with stainless steel base 11, base and floor mounted screw retention, and ground connection is good, to prevent thunderbolt.
Cover golden palisade rain sensitive board and be mainly used in the small raindrop of detection, its searching surface as shown in Figure 1, rain sensible plate 8 adopts the printed circuit board of resistant to elevated temperatures aluminium base type, also can adopt the epoxy glass fiber printed circuit board, straight line lines spacing adjacent on the printed circuit board is 0.3～0.5mm, and the straight line line thickness is 2mm～5mm.
The pitch angle of covering gold or gold-plated palisade rain sensitive board 8 is 25-65 °, can accept sleet both to reach, and is convenient to rainwater again and drops immediately, improves the intermittently detection sensitivity of sleet.
Except that straight line lines circuit part, all need armor coated on the circuit board; the vertical element circuit covers gold or gold-plated processing as the raindrop sensing electrode; it scatters and is about Φ 0.6mm when following of single the raindrop of Φ 0.3mm are to circuit board, so the accurate small raindrop of sensing of this spacing.Electrode outlet line between the lines can be drawn respectively by the right and left as seen from the figure, can find out and has or not raindrop by detecting conductivity between two electrodes.
Highly sensitive sleet detecting device only can detect raindrop, snowflake and send signal, and to have very strong antijamming capability to mist, frost, dew, reach this requirement, the solution of well heater is close in employing at rain sensible plate, the temperature of well heater is controlled at 45 ℃-65 ℃, not too low not reaching intermittently raindrop Testing requirement, the too high serviceable life that will shorten rain sensible plate.Miniature bimetal release type temperature controller is adopted in temperature control, be close on the aluminium alloy heating plate and install, be connected in series with the electrical heating wire circuit, the reference mark of temperature controller is 55 ± 5 ℃, therefore the temperature on the aluminium alloy heating plate will maintain about 55 ℃ all the time, mist, frost, dew can't be generated on rain sensible plate, and can make in the short period of time and drain rainwater.
The structure of anticorrosion combination metal heater plate 5 has taken into full account the mal-condition of outdoor environment, corrode consideration from rainproof, anti-salt fog, employing is placed on electrical heating wire in the Φ 8-Φ 12mm stainless-steel tube 6, charge into silica sand in the pipeline space, play insulating effect on the one hand, prevent oxidation of electrical heating wire ingress of air or corrosion on the other hand, pipe end seals and electrical heating wire is drawn by the insulation porcelain bead.The stainless-steel tube (6) that will contain electrical heating wire curves the U type and casts in the flat aluminum alloy 5, and electrical heating wire is drawn by the insulation porcelain bead, has constituted a whole heating plate, and this heating plate outside is carried out whole plastic-blasting and handled erosion with isolated external environment condition.Aluminium alloy is provided with groove outward, and groove is embedded in rubber seal 4 to prevent the intrusion internal circuit of sleet.The testing circuit of sense rain signal is: R1 one end and R2 one end, electric bridge output Vo one end join, R3 one end and R4 one end, the electric bridge output Vo other end, cover gold or gold-plated palisade rain sensitive board (8) one ends join, the R1 other end and the R4 other end, signal excitation source Vi one end, cover the gold or gold-plated palisade rain sensitive board (8) one ends join, the R2 other end and the R3 other end, the signal excitation source Vi other end join.
By detecting by the conducting bridge that R1, R2, R3, R4 formed; One termination signal excitation source Vi of electric bridge, its excitation sources waveform is powered to bridge circuit by the positive and negative driving source that replaces as shown in Figure 3; The effect in the positive and negative alternative excitation of signal source is to prevent that the polarization reaction of sleet water in circuit from keeping detection sensitivity.The frequency of driving source is at 1KHz-30KHz.The electric conductivity value of R1, R2, R3, R4 equates that all therefore, when no sleet fell, it was zero that bridge balance, electric bridge are exported Vo; When raindrop fell on the rain sensible plate, electric bridge output Vo was the square-wave signal of similar excitation sources waveform.Behind signal amplification and rectification circuit, be output as a direct current voltage signal, this voltage signal is detected can distinguish the landing that has or not sleet.
Claims (4)
1. highly sensitive sleet detecting device of palisade, it is characterized in that it have cover the gold or gold-plated palisade rain sensitive board (8), covering gold or gold-plated palisade rain sensitive board (8) is connected with anticorrosion combination metal heater plate (5) by stainless steel attachment screw (7), the bottom of anticorrosion combination metal heater plate (5) has groove, groove is embedded with rubber weather strip (4), the outside at the bottom groove of anticorrosion combination metal heater plate (5) is provided with mounting screw, and be connected with stainless steel terminal box (2), the thermostatic control of anticorrosion combination metal heater plate is controlled by the miniature bimetal release type temperature controller (9) that is installed in anticorrosion combination metal heater plate bottom, connection terminal (3) is installed in the stainless steel terminal box (2), be welded with stainless steel axle sleeve (1) on stainless steel terminal box (2) base plate, stainless steel axle sleeve (1) links to each other with stainless steel support bar (10) and is fastening by screw (12), stainless steel support bar (10) bottom is welded with stainless steel base (11), base and floor mounted screw retention, the testing circuit of sense rain signal is: first electricity leads R1 one end and second electricity is led R2 one end, electric bridge output Vo one end joins, the 3rd electricity leads R3 one end and the 4th electricity is led R4 one end, the electric bridge output Vo other end, covering gold or gold-plated palisade rain sensitive board (8) one ends joins, first electricity leads the R1 other end and the 4th electricity is led the R4 other end, signal excitation source Vi one end, cover the gold or gold-plated palisade rain sensitive board (8) other end and join, second electricity leads the R2 other end and the 3rd electricity is led the R3 other end, the signal excitation source Vi other end joins.
2. the highly sensitive sleet detecting device of a kind of palisade according to claim 1 is characterized in that the said pitch angle of covering gold or gold-plated palisade rain sensitive board (8) is 25～65 °.
3. the highly sensitive sleet detecting device of a kind of palisade according to claim 1, it is characterized in that said printed circuit board or the employing epoxy glass fiber printed circuit board that covers gold or the resistant to elevated temperatures aluminium base type of gold-plated palisade rain sensitive board (8) employing, straight line lines spacing adjacent on the printed circuit board is 0.3～0.5mm, and the straight line line thickness is 2～5mm.
4. the highly sensitive sleet detecting device of a kind of palisade according to claim 1, it is characterized in that said anticorrosion combination metal heater plate (5) employing is placed on electrical heating wire in Φ 8～Φ 12mm stainless-steel tube (6), fill silica sand in the steel pipe, stainless-steel tube (6) curves the U type and casts in the flat aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100183920A CN100449331C (en) | 2004-05-12 | 2004-05-12 | Grid shaped highly sensitive detector for rain and snow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100183920A CN100449331C (en) | 2004-05-12 | 2004-05-12 | Grid shaped highly sensitive detector for rain and snow |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1570672A CN1570672A (en) | 2005-01-26 |
| CN100449331C true CN100449331C (en) | 2009-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100183920A Expired - Fee Related CN100449331C (en) | 2004-05-12 | 2004-05-12 | Grid shaped highly sensitive detector for rain and snow |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175488A (en) * | 2011-02-10 | 2011-09-07 | 重庆电力科学试验研究院 | Automatic collector |
| CN102508322B (en) * | 2011-11-22 | 2013-11-13 | 杭州安保网智能科技有限公司 | Omnibearing rain and snow sensing meter used in nuclear radiation environment safety monitoring system |
| CN106526711B (en) * | 2016-12-27 | 2019-02-12 | 江苏省无线电科学研究所有限公司 | Sleet reveals white monitor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5793243A (en) * | 1980-11-29 | 1982-06-10 | Niigata Denki Kk | Automatic snow detecting device |
| JPH09171084A (en) * | 1995-12-21 | 1997-06-30 | Mitsubishi Cable Ind Ltd | Method and device for weather detection |
| JPH1152065A (en) * | 1997-08-06 | 1999-02-26 | Sanden Corp | Snowfall detector |
| JPH11160455A (en) * | 1997-11-26 | 1999-06-18 | Shigeo Nakajima | Snowfall intensity detector |
| CN2591649Y (en) * | 2002-12-31 | 2003-12-10 | 河北先河科技发展有限公司 | Automatic monitoring instrument for raining |
-
2004
- 2004-05-12 CN CNB2004100183920A patent/CN100449331C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5793243A (en) * | 1980-11-29 | 1982-06-10 | Niigata Denki Kk | Automatic snow detecting device |
| JPH09171084A (en) * | 1995-12-21 | 1997-06-30 | Mitsubishi Cable Ind Ltd | Method and device for weather detection |
| JPH1152065A (en) * | 1997-08-06 | 1999-02-26 | Sanden Corp | Snowfall detector |
| JPH11160455A (en) * | 1997-11-26 | 1999-06-18 | Shigeo Nakajima | Snowfall intensity detector |
| CN2591649Y (en) * | 2002-12-31 | 2003-12-10 | 河北先河科技发展有限公司 | Automatic monitoring instrument for raining |
Non-Patent Citations (2)
| Title |
|---|
| 感雨器. 郭锡钦.气象科技，第6期. 1984 |
| 感雨器. 郭锡钦.气象科技，第6期. 1984 * |
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| Publication number | Publication date |
|---|---|
| CN1570672A (en) | 2005-01-26 |
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