CN202350870U - Water inlet automatic detecting device of outdoor machine cabinet - Google Patents
Water inlet automatic detecting device of outdoor machine cabinet Download PDFInfo
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- CN202350870U CN202350870U CN2011205096869U CN201120509686U CN202350870U CN 202350870 U CN202350870 U CN 202350870U CN 2011205096869 U CN2011205096869 U CN 2011205096869U CN 201120509686 U CN201120509686 U CN 201120509686U CN 202350870 U CN202350870 U CN 202350870U
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- reflection
- reflection limit
- limit
- water inlet
- collimating apparatus
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Abstract
The utility model relates to an automatic detecting device of an outdoor machine cabinet. The automatic detecting device comprises an optical sensing probe, a light source, a photoelectric probing device, an alarming device, a photoelectric converting device and an automatic switching-off device; the optical sensing probe comprises a pentaprism structure, an incident-end optical fiber, an emergent-end optical fiber, a first collimator arranged on the incident-end optical fiber, and a second collimator arranged on the emergent-end optical fiber; an input end of the photoelectric converting device is connected with the second collimator through a coupler; an output end of the photoelectric converting device is connected with the automatic switching-off device; and the automatic switching-off device controls the opening and the closing of a valve arranged on a cabinet machine. By using the automatic detecting device, the sealing problem existing when the outdoor machine cabinet is placed for a long time in a severe environment is solved; whether accumulated water enters the machine cabinet or not can be detected in time and accurately by utilizing the principle that the Fresnel reflection is generated as the refractive indexes of media around the optical sensing probe are different; and the valve is started up to discharge water simultaneously.
Description
Technical field
The utility model relates to a kind of outdoor cabinet automatic detection device, relates in particular to a kind of outdoor cabinet water inlet automatic detection device.
Background technology
Outdoor cabinet is a kind of directly being under the natural climate influence; Process by metal or nonmetallic materials; Do not allow the lack of competence operator to get into the cabinet of operation, the equipment of outdoor physics working environment and security system is provided for radio communication website or cable network site works station.Be adapted at outdoor environment; Rack like highway limit, park, roof, mountain area, level land installation; But mounted base station equipment, power-supply device, accumulator, temperature control device, transmission equipment and other support equipments or be that above equipment is reserved installing space and heat exchange capacity in the rack can normally move the machine that reliable mechanical and environmental protection are provided for internal unit
Because outdoor cabinet is placed in rugged surroundings usually; There is sealing problem in long-time the use; Rainwater can infiltrate in the rack, causes the interior power supply of cabinet, circuit arrangement or fiber optic cable plant etc. to go wrong, and causes supply line's fault or huge numbers of families' internet to interrupt; Can make troubles to daily commercial production or family life, detect in time therefore whether ponding to be arranged in the rack and in time drain be a urgent and significant thing.
Summary of the invention
The technical matters that the utility model solved is: provide a kind of and can in time detect the whether outdoor cabinet water inlet automatic detection device of progradation water of rack.
The technical solution of the utility model:
A kind of outdoor cabinet water inlet automatic detection device comprises optical sensing probe, light source, Electro-Optical Sensor Set and warning device,
Its special character is: said optical sensing probe comprises pentaprism structure, incident end optical fiber, exit end optical fiber, is arranged on first collimating apparatus on the incident end optical fiber and is arranged on second collimating apparatus on the exit end optical fiber,
Said light source inputs to the pentaprism structure through first collimating apparatus, and said pentaprism structure exports Electro-Optical Sensor Set to through second collimating apparatus, and said Electro-Optical Sensor Set is connected with warning device,
Said pentaprism structure comprises the sealing pentagon that the first reflection limit a, the second reflection limit b, the 3rd reflection limit c, the 4th reflection limit d and the 5th reflection limit e surround, and wherein the 5th reflection limit e is a horizontal sides,
Angle between angle theta 4 between angle theta 3 between angle theta 2 between the first reflection limit a and the second reflection limit b, the second reflection limit b and the 3rd reflection limit c, the 3rd reflection limit c and the 4th reflection limit d, the first reflection limit a and the 5th reflection limit e is relation: α 1≤θ 1≤α 2 below the angle theta 5 between θ 1, the 5th reflection limit e and the 4th reflection limit d satisfies; θ 5=θ 1; θ 3=θ 4=θ 2=2 θ 1;
Wherein: α 1 must satisfy incident angle for total reflection takes place in the air:
The refractive index of air: n
0
The refractive index of oil: n
1
The refractive index of prism: n
2
Above-mentioned outdoor cabinet water inlet automatic detection device also comprises photoelectric conversion device and opens a sluice gate device automatically; The input end of said photoelectric conversion device is connected with second collimating apparatus through coupling mechanism; The output terminal of said photoelectric conversion device with open a sluice gate device automatically and be connected, saidly open a sluice gate the valve folding of device control setting on cabinet-type air conditioner automatically.
Above-mentioned pentaprism is adopted structure and is adopted K9 glass,
Then 39.8 °≤θ is 1≤70.44 °,
79.6°≤θ3＝θ4＝θ2≤140.88°，θ5＝θ1。
Above-mentioned pentaprism is adopted structure and is adopted K9 glass, gets θ 1=67.5 °, can calculate 4=135 ° of θ 2=θ 3=θ according to this, 1=67.5 ° of θ 5=θ.
The surface of above-mentioned employing pentaprism structure also is coated with one deck hydrophobic film.
The smooth finish of above-mentioned pentaprism body structure surface is nanoscale or dust level.
A kind of outdoor cabinet water inlet automatic detection device comprises optical sensing probe, light source, Electro-Optical Sensor Set and warning device,
Its special character is: said optical sensing is popped one's head in and is comprised prism structures, is arranged on first collimating apparatus 3 on the prism structures incident end optical fiber and is arranged on second collimating apparatus 5 on the pentaprism structure exit end optical fiber,
Said light source inputs to prism structures through first collimating apparatus, and said prism structures exports Electro-Optical Sensor Set to through second collimating apparatus, and said Electro-Optical Sensor Set is connected with warning device,
Said prism structures comprises the first reflection limit a, the second reflection limit b, the 3rd reflection limit c, and wherein the 3rd reflection limit c is a horizontal sides,
Angle between the first reflection limit a and the 3rd reflection limit c is that the angle between θ 1, the first reflection limit a and the second reflection limit b is that angle between θ 2, the three reflection limit c and the second reflection limit b is θ 3,
Wherein: θ 1 satisfies: α 1≤θ 1≤α 2
Total reflection takes place in air must satisfy incident angle:
In oil, do not satisfy the total reflection condition incident angle:
The refractive index of air: n
0
The refractive index of oil: n
1
The refractive index of prism: n
2
θ3＝θ1；
θ2＝180-2θ1。
Above-mentioned outdoor cabinet water inlet automatic detection device; Its special character is: it also comprises photoelectric conversion device and opens a sluice gate device automatically; The input end of said photoelectric conversion device is connected with second collimating apparatus through coupling mechanism; The output terminal of said photoelectric conversion device with open a sluice gate device automatically and be connected, saidly open a sluice gate the valve folding of device control setting on cabinet-type air conditioner automatically.
Above-mentioned prism is adopted structure and is adopted K9 glass, and then 39.8 °≤θ is 1≤70.44 °, can calculate θ 3=θ 1 according to this,
39.12°≤θ2≤100.4°。
The smooth finish that the surface of above-mentioned employing prism structures also is coated with one deck hydrophobic film or said prism structures surface is nanoscale or dust level.
The advantage that the utility model had:
1, the utility model utilize optical sensing probe surrounding medium refractive index difference and produce the principle of Fresnel reflection, can detect in time, accurately and whether pass in and out in the rack, start the valve draining simultaneously.
2, the utility model pick-up unit has, and passive (safe), but do not receive electromagnetic interference (EMI) long-distance transmissions and monitoring, highly sensitive, simple installation, price is low, volume is little.
3, the utility model through plating hydrophobic film or the high prism of employing surface smoothness, improves the frequency of utilization of prism on prism structure, increases the service life.
Description of drawings
Fig. 1 is the detection principle schematic of the utility model;
Fig. 2 is the detection system synoptic diagram as a result of the utility model;
Fig. 3 is the structural representation of a kind of optical sensing probe of the utility model;
Fig. 4 is a kind of embodiment that pops one's head in of optical sensing among Fig. 3;
Fig. 5 is the structural representation of the another kind of optical sensing probe of the utility model;
Fig. 6 is a kind of embodiment that pops one's head in of optical sensing among Fig. 5.
Wherein Reference numeral is: 1-light source, 2-optical fiber, 3-first collimating apparatus, 4-pentaprism structure, 5-second collimating apparatus; The 7-photodetector, 8-warning device, 9-coupling mechanism, 10-photoelectric conversion device; 11-opens a sluice gate device automatically, 12-optical sensing probe, 13-water, 14-rack.
Embodiment
The utility model is an a kind of novel optical fibers formula outdoor cabinet water inlet automatic detection device, utilize optical sensing probe surrounding medium refractive index difference and produce the principle of Fresnel reflection; The light that light source sends is realized the collimation of light to first collimating apparatus 3 through Optical Fiber Transmission; And directly collimated light is impinged perpendicularly in the prism 4, light in prism through twice total reflection, again by 5 outgoing of second collimating apparatus; Through after the Optical Fiber Transmission; Get into Electro-Optical Sensor Set, drive alarm and signal lamp warning through photoelectric switching circuit, to realize detection to water level.When probe places air, satisfy the Fresnel reflection condition, from second collimating apparatus 5 light output is arranged, system is in holding state; Touch probe and work as the water surface 13 1; Because the refractive index of water is greater than air; Do not satisfy the Fresnel reflection condition; Do not have light output in second collimating apparatus 5, do not have light output in the coupling mechanism 9, coupling mechanism one tunnel output signal is through detector and opto-electronic conversion and warning device realization signal lamp flicker and send alarm sound; And another road of coupling mechanism output signal through opto-electronic conversion village after and the ponding of draining automatically of opening a sluice gate automatically to open the sluices automatically behind the device; Signal output is arranged when water drains after clean in second collimating apparatus 5, at this moment signal lamp stops that flicker, alarm sound stop, the flop gate loop system is in holding state.The advantage of this system is highly sensitive, and the electro-optical system response time is short, and the combination of a plurality of probe can realize the measurement of multiple spot Distributed Liquid Level.During use this device sensing probe 12 placed the least significant end of rack, when water got into rack 14, when the water surface touched probe, system signal lamp flicker and at once reporting to the police had water in the prompting cabinet, and carries out draining immediately.
The utility model sensing probe adopts prism structures, can also adopt pentaprism structure and various prism structure, as long as satisfy the Fresnel reflection condition at different interfaces.
Because this probe will satisfy simultaneously and in oil, Fresnel reflection not take place and Fresnel reflection takes place in air.
With the prism is example:
If:
The refractive index of air: n
0
The refractive index of water: n
1
The refractive index of prism: n
2
Confirming of incident angle is confirming of θ 1:
Will total reflection take place in air must satisfy incident angle:
To in water, not satisfy the total reflection condition incident angle:
Therefore the selection of incident angle should be satisfied α 1≤θ 1≤α 2, because light all above-mentioned total reflection condition will take place at a, b face, can be calculated by above-mentioned total reflection principle and calculate θ 2, θ 3 according to this.
For example: if prism adopts K9 glass
The refractive index of air: n
0=1
The refractive index of water: n
1=1.33
The refractive index of prism: n
2=1.56
Calculating can get:
α1≥39.8°
α2≤58.49°
1≤70.44 ° of 39.8 °≤θ of incident angle gets θ 1=45 °, can calculate θ 2=90 ° according to this, θ 3=45 °.
If prism employing refractive index is 1.5 glass material, calculating can get ranges of incidence angles and be: 1≤62.457 ° of 41.81 °≤θ, get θ 1=45 °, and can calculate θ 2=90 ° according to this, θ 3=45 °.
If prism employing refractive index is 1.9 glass material, calculating can get ranges of incidence angles and be: 1≤44.43 ° of 31.75 °≤θ, get θ 1=40 °, and can calculate θ 2=100 ° according to this, θ 3=40 °.
Glass material is between the 1.5-1.9 by the composition different refractivity, and various glass materials, jewel, PMMA etc. all can be used as the sensing probe of the utility model, and concrete account form is consistent with above-mentioned prism.
With the pentaprism is example:
The refractive index of air: n
0
The refractive index of water: n
1
The refractive index of oil: n
2
The refractive index of prism: n
3
For example: if prism adopts K9 glass
The refractive index of air: n
0=1
The refractive index of water: n
1=1.33
The refractive index of oil: n
2=1.47
The refractive index of prism: n
3=1.56
Calculating can get:
α1≥39.8°
α2≤70.44°
α3≥58.49°
1≤70.44 ° of 58.49 °≤θ of incident angle gets θ 1=67.5 °, can calculate 4=135 ° of θ 2=θ 3=θ according to this, 1=67.5 ° of θ 5=θ.
After considering that optical prism touches water, water stain meeting remains in the long-term sensitivity of using of surface influence sensing head of prism, and the utility model adopts two kinds of solutions.
The surface that is employed in prism is coated with one deck hydrophobic film: adopt the direct projection rate of hydrophobic film rear prism to change; Thereby the structure that causes whole prism changes; Corresponding θ 1, θ 2, θ 3 or θ 4, θ 5 also can change accordingly, but can not cause the variations in refractive index of prism material.
Employing super-smooth surface super-smooth surface is that the surface smoothness of prism will reach nanometer or dust level; Can play the effect suitable like this with hydrophobic film; But can not cause the variations in refractive index of prism material, therefore corresponding θ 1, θ 2, θ 3 or θ 4, θ 5 can not change.
Claims (10)
1. an outdoor cabinet water inlet automatic detection device comprises optical sensing probe (12), light source (1), Electro-Optical Sensor Set (7) and warning device (8),
It is characterized in that: said optical sensing is popped one's head in and is comprised pentaprism structure, incident end optical fiber, exit end optical fiber, is arranged on first collimating apparatus (3) on the incident end optical fiber and is arranged on second collimating apparatus (5) on the exit end optical fiber,
Said light source inputs to the pentaprism structure through first collimating apparatus, and said pentaprism structure exports Electro-Optical Sensor Set to through second collimating apparatus, and said Electro-Optical Sensor Set is connected with warning device,
Said pentaprism structure comprises the sealing pentagon that the first reflection limit (a), the second reflection limit (b), the 3rd reflection limit (c), the 4th reflection limit (d) and the 5th reflection limit (e) surround, and wherein the 5th reflection limit (e) is a horizontal sides,
Angle between angle theta 4, the first reflection limit (a) and the 5th reflection limit (e) between angle theta 3, the 3rd reflection limit (c) and the 4th reflection limit (d) between angle theta 2, the second reflection limit (b) and the 3rd reflection limit (c) between the first reflection limit (a) and the second reflection limit (b) is relation: α 1≤θ 1≤α 2 below the angle theta 5 between θ 1, the 5th reflection limit (e) and the 4th reflection limit (d) satisfies; θ 5=θ 1; θ 3=θ 4=θ 2=2 θ 1;
Wherein: α 1 must satisfy incident angle for total reflection takes place in the air:
α 2 is not for satisfying the total reflection condition incident angle in oil:
The refractive index of air: n
0
The refractive index of oil: n
1
The refractive index of prism: n
2
。
2. outdoor cabinet water inlet automatic detection device according to claim 1; It is characterized in that: it also comprises photoelectric conversion device and opens a sluice gate device automatically; The input end of said photoelectric conversion device is connected with second collimating apparatus through coupling mechanism; The output terminal of said photoelectric conversion device with open a sluice gate device automatically and be connected, saidly open a sluice gate the valve folding of device control setting on cabinet-type air conditioner automatically.
3. outdoor cabinet water inlet automatic detection device according to claim 1 and 2 is characterized in that:
Said pentaprism is adopted structure and is adopted K9 glass,
Then 39.8 °≤θ is 1≤70.44 °,
79.6°≤θ3＝θ4＝θ2≤140.88°，θ5＝θ1。
4. outdoor cabinet water inlet automatic detection device according to claim 3, it is characterized in that: said pentaprism is adopted structure and is adopted K9 glass, gets θ 1=67.5 °, can calculate 4=135 ° of θ 2=θ 3=θ according to this, 1=67.5 ° of θ 5=θ.
5. outdoor cabinet water inlet automatic detection device according to claim 4, it is characterized in that: the surface of said employing pentaprism structure also is coated with one deck hydrophobic film.
6. outdoor cabinet water inlet automatic detection device according to claim 4, it is characterized in that: the smooth finish of said pentaprism body structure surface is nanoscale or dust level.
7. an outdoor cabinet water inlet automatic detection device comprises optical sensing probe (12), light source (1), Electro-Optical Sensor Set (7) and warning device (8),
It is characterized in that: said optical sensing is popped one's head in and is comprised prism structures, is arranged on first collimating apparatus (3) on the prism structures incident end optical fiber and is arranged on second collimating apparatus (5) on the pentaprism structure exit end optical fiber,
Said light source inputs to prism structures through first collimating apparatus, and said prism structures exports Electro-Optical Sensor Set to through second collimating apparatus, and said Electro-Optical Sensor Set is connected with warning device,
Said prism structures comprises the first reflection limit (a), the second reflection limit (b), the 3rd reflection limit (c), and wherein the 3rd reflection limit (c) is a horizontal sides,
Angle between the first reflection limit (a) and the 3rd reflection limit (c) is that the angle between θ 1, the first reflection limit (a) and the second reflection limit (b) is that angle between θ 2, the three reflection limits (c) and the second reflection limit (b) is θ 3,
Wherein: θ 1 satisfies: α 1≤θ 1≤α 2
Total reflection takes place in air must satisfy incident angle:
In oil, do not satisfy the total reflection condition incident angle:
The refractive index of air: n
0
The refractive index of oil: n
1
The refractive index of prism: n
2
θ3＝θ1；
θ2＝180-2θ1。
8. outdoor cabinet water inlet automatic detection device according to claim 6; It is characterized in that: it also comprises photoelectric conversion device and opens a sluice gate device automatically; The input end of said photoelectric conversion device is connected with second collimating apparatus through coupling mechanism; The output terminal of said photoelectric conversion device with open a sluice gate device automatically and be connected, saidly open a sluice gate the valve folding of device control setting on cabinet-type air conditioner automatically.
9. according to claim 6 or 7 described outdoor cabinet water inlet automatic detection devices, it is characterized in that: said prism is adopted structure and is adopted K9 glass, and then 39.8 °≤θ is 1≤70.44 °, can calculate 2≤100.4 ° of 1,39.12 °≤θ of θ 3=θ according to this.
10. outdoor cabinet water inlet automatic detection device according to claim 9 is characterized in that: the smooth finish that the surface of said employing prism structures also is coated with one deck hydrophobic film or said prism structures surface is nanoscale or dust level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205096869U CN202350870U (en) | 2011-12-08 | 2011-12-08 | Water inlet automatic detecting device of outdoor machine cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205096869U CN202350870U (en) | 2011-12-08 | 2011-12-08 | Water inlet automatic detecting device of outdoor machine cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202350870U true CN202350870U (en) | 2012-07-25 |
Family
ID=46539868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205096869U Expired - Lifetime CN202350870U (en) | 2011-12-08 | 2011-12-08 | Water inlet automatic detecting device of outdoor machine cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202350870U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564529A (en) * | 2011-12-08 | 2012-07-11 | 飞秒光电科技(西安)有限公司 | Automatic water inlet detection device of outdoor cabinet |
| CN104296952A (en) * | 2014-09-28 | 2015-01-21 | 许继电气股份有限公司 | Direct-current transmission converter valve tower and water leakage detection system thereof |
| CN104501908A (en) * | 2014-12-19 | 2015-04-08 | 中国计量学院 | Photoelectric sensor detecting liquid level |
| CN105185420A (en) * | 2015-05-26 | 2015-12-23 | 中国科学技术大学 | Automatic detection device and method for cooling water film coverage on nuclear power plant containment surface |
-
2011
- 2011-12-08 CN CN2011205096869U patent/CN202350870U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564529A (en) * | 2011-12-08 | 2012-07-11 | 飞秒光电科技(西安)有限公司 | Automatic water inlet detection device of outdoor cabinet |
| CN104296952A (en) * | 2014-09-28 | 2015-01-21 | 许继电气股份有限公司 | Direct-current transmission converter valve tower and water leakage detection system thereof |
| CN104501908A (en) * | 2014-12-19 | 2015-04-08 | 中国计量学院 | Photoelectric sensor detecting liquid level |
| CN105185420A (en) * | 2015-05-26 | 2015-12-23 | 中国科学技术大学 | Automatic detection device and method for cooling water film coverage on nuclear power plant containment surface |
| CN105185420B (en) * | 2015-05-26 | 2017-08-29 | 中国科学技术大学 | The cooling moisture film coverage rate automatic detection device and method on nuclear power plant containment shell surface |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120725 |
|
| CX01 | Expiry of patent term |