CN101324464A - Underwater C waveband ultraviolet ray strength detector - Google Patents
Underwater C waveband ultraviolet ray strength detector Download PDFInfo
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- CN101324464A CN101324464A CNA200710074941XA CN200710074941A CN101324464A CN 101324464 A CN101324464 A CN 101324464A CN A200710074941X A CNA200710074941X A CN A200710074941XA CN 200710074941 A CN200710074941 A CN 200710074941A CN 101324464 A CN101324464 A CN 101324464A
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Abstract
The invention discloses a detector for detecting C-band UV intensity underwater. The underwater C-band UV intensity detector comprises a detection probe, a housing, an amplification circuit and a computer processing system, wherein the detection probe is arranged in the housing; the housing is made of a stainless steel material; an O-shaped seal ring or silica gel is arranged at the connection part of the housing and the wire outlet of the detection probe; silica gel is filled inside the detection probe; a light inlet hole is formed on the housing; a light filter is arranged on the light inlet hole; the detection probe is arranged in the position of the light inlet hole; the detection probe adopts a special photodiode sensitive to C-band UV ray; the amplification circuit is composed of an operational amplifier in combination with a peripheral circuit and a resistor; the output of the detection probe is connected with the input terminal of the amplification circuit; and the output terminal of the amplification circuit is connected with the computer processing system. The detector can effectively detect irradiation intensity of underwater UV rays at reduced detection cost, and the cleaning process and the sterilization process are carried out synchronously to save the energy source and ensure the output water quality.
Description
Affiliated technical field
The present invention discloses a kind of uitraviolet intensity detection instrument, and particularly a kind of can being applied under water detected the detection instrument of C-band uitraviolet intensity under water.
Background technology
In urban water supply and water treatment system, sterilization is to guarantee one of requisite measure of user security water as the most basic unit for treating water, has become the important defence line of the propagation that wards off disease, diffusion.The Eleventh Five-Year Plan plan clearly proposes with drinking water safety as emphasis, strengthens the strategy and policy of water prevention and cure of pollution.But find that from the seventies in 20th century chlorination produces " three cause " material, and can not effectively kill Cryptosporidium and sporangiocyst thereof, people begin to examine closely again sterilization problems.Now, people need badly develop a kind of safe, chlorine substitutes disinfection technology efficiently, and ultraviolet disinfection does not produce DBPs because of it, becomes the emphasis of current research and application.But there is following point in present decontamination system: the dosage of (1) disinfection by ultraviolet light effect and UV-C is proportional, the too low Disinfection Effect to microorganism of dosage is relatively poor, and repair phenomenon (light reparation and dark reactivation) in addition, if but ultraviolet dosage will cause waste too greatly.Therefore, it is very important rationally to control ultraviolet dosage.(2) the method monitoring frequency of traditional uv dosage of determining real application systems with methods such as chemistry, biology is low, sampling error is big, Monitoring Data is inaccurate, be used for inferring and the selective system structure on limitation is arranged, can only be used for assaying after the system structure design.(3) classic method can not in time reflect the decontamination system operation conditions, and having cleaning or changing untimely meeting influence effluent quality, changes lamp and wash number and too frequently causes problems such as very big energy dissipation again.(4) abnormal conditions can't in time be predicted and handle to traditional measurement method.
Summary of the invention
At the shortcoming that supplies water in the above-mentioned prior art of mentioning and water treatment system water quality is difficult to detect, the invention provides a kind of detection instrument that is used for detecting the C-band uitraviolet intensity under water, can by C-band ultraviolet ray special photoelectric diode detection under water the C-band uitraviolet intensity determine to utilize the sterilization situation of C-band ultraviolet ray to water.
The technological means that the present invention solves its technical matters employing is: a kind of underwater C waveband ultraviolet ray strength detector, this detection instrument comprises detecting head, shell, amplifying circuit, microprocessor system, the detecting head setting in the enclosure, the shell stainless steel material, the connecting portion of shell and detecting head wire outlet place all are provided with O shape water proof ring or silica gel, and detecting head inside is filled with silica gel, has light well on the shell, light well is provided with optical filter, and detecting head is installed in the light well place; Detecting head adopts the ultraviosensitive special photoelectric diode of C-band; Amplifying circuit cooperates peripheral electric capacity, resistance to form by operational amplifier, detecting head output is connected with the input end of amplifying circuit, the output terminal of amplifying circuit is connected with microprocessor system, the amplifying circuit output signal is sent into microprocessor system after the A/D conversion, after the metering calibration, just can be converted into corresponding UV radiation intensity level and also can show.
The technological means that the present invention solves its technical matters employing further comprises:
Described amplifying circuit is electrically connected with the resistance R 1 of series connection, the common port of resistance R 2 for the input end in the same way at operational amplifier, resistance R 1 another termination+5V power supply, resistance R 2 other end ground connection, ultraviolet C special photoelectric diode cathode ground connection, negative pole is connected with the operational amplifier reverse input end, is connected in parallel to capacitor C and resistance R between the reverse input end of operational amplifier and the output terminal.
Described optical filter only adopts can interfere narrow band pass filter by the ultraviolet ultraviolet of C-band.
The photodiode that described ultraviolet C special photoelectric diode adopts wide band gap semiconducter AlGaN material to make.
Be connected with display device on the described microprocessor system data output end.
The invention has the beneficial effects as follows: the present invention can directly measure UV radiation intensity under water, can in sterilization process, measure in real time ultraviolet irradiation intensity and ultraviolet penetrance, can promptly and accurately uviol lamp be worn out and give control center and uviol lamp is carried out automatic washing by the programmed control automatic washing device of working out in advance with quartzy pipe box outer wall fouling condition feedback, realized automatic cleaning to quartz socket tube, the lasting full-automatic monitoring of the automatic control of water treatment flow and the radiation intensity of uviol lamp, and can in time provide the UV intensity signal with the supervisory system coupling, guarantee bactericidal effect thereby can regulate water treatment flow and reaction time and uviol lamp exit dose automatically.The present invention simultaneously can also in time survey the abnormal conditions that take place in the decontamination system and utilize warning system to give the alarm, guarantee that the staff can in time handle this abnormal conditions, reduced labor cost, cleaning course and sterilization process are carried out synchronously, save the energy, guaranteed effluent quality.
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the sectional structure synoptic diagram of Fig. 1.
Fig. 3 is circuit theory diagrams of the present invention.
Among the figure, 1-shell, 2-optical filter, 3-lead, 4-water proof ring, 5-detecting head, 6-silica gel.
Embodiment
Present embodiment is the preferred embodiment for the present invention, and other all its principle is identical with present embodiment or approximate with basic structure, all within protection domain of the present invention.
The present invention mainly comprises shell 1, control circuit, detecting head 5, and detecting head 5 is arranged in the shell 1, and detecting head 5 is electrically connected with control circuit by lead 3.Referring to accompanying drawing 1 and accompanying drawing 2, in the present embodiment, shell 1 is formed for the two parts up and down that cooperatively interact, and shell 1 adopts the stainless steel material typing to process, and shell is provided with water proof ring in two parts place of cooperatively interacting about in the of 1, have light well on the shell 1, the light well place is equipped with optical filter 2, and optical filter 2 adopts silica gel bonding with shell 1 cooperation place, and it leaks waterproof, detecting head 5 is located at the light well place, makes ultraviolet see through optical filter and can shine directly on the detecting head 5.The exit of shell 1 upper conductor 3 also is provided with silica gel material, to prevent the seepage of water.In the shell 1, be perfused with silica gel material, with silica gel circuit in the shell 1 wrapped up, to reach waterproof effect.Because in the ultraviolet ray, the C-band ultraviolet ray of having only just has the effect of sterilization under water, the C-band uitraviolet intensity that is to say that this detection instrument need detect, but, light under water is except including the C-band ultraviolet ray, also include the A band ultraviolet ray, the B band ultraviolet, multiple light such as visible light, these light can impact the ultraviolet detection of C-band, therefore, the present invention is provided with optical filter 2 on shell, optical filter 2 in the present embodiment adopts only can see through the ultraviolet ultraviolet interference of C-band narrow band pass filter, it can effectively prevent the A band ultraviolet ray, the B band ultraviolet, entering of visible light etc. makes detecting head 5 detected light intensities only be the C-band uitraviolet intensity.The photodiode D1 that detecting head 5 adopts wide band gap semiconducter AlGaN material to make, it is the ultraviolet-responsive maximum of 254nm to the C-band medium wavelength, and insensitive to A band ultraviolet ray, B band ultraviolet and visible light.
Referring to accompanying drawing 3, accompanying drawing 3 is circuit theory diagrams of the present invention.Be control circuit among the figure, control circuit is mainly the amplifying circuit that amplifier IC forms.In the present embodiment, it is the operational amplifier of AD844 that amplifier IC adopts model.Resistance R 1 and resistance R 2 are connected in series, the non-public termination+5V power supply of resistance R 1, the non-common end grounding of resistance R 2, the input end in the same way of the public termination amplifier IC of resistance R 1 and resistance R 2, photodiode D1 plus earth, photodiode D1 negative pole is connected with the reverse input end of amplifier IC, and resistance R is in parallel with capacitor C, resistance R one end is connected the reverse input end of amplifier IC, and the resistance R other end is connected the output terminal of amplifier IC.The output terminal of amplifier IC is connected with the data input pin of microprocessor system, detection signal can be input in the microprocessor system and calculate, calibrate, be connected with display device on the data output end of microprocessor system, can show corresponding data by display device, as: uitraviolet intensity, water quality situation etc. under water, display device can adopt charactron or LCD, or is connected directly to computer monitor and shows.
The present invention in use, the detecting head that will have shell is positioned in the water, because the current ratio that is produced is fainter, so must guarantee the strict ground connection of photodiode D1 earth terminal, prevents that external voltage from disturbing.Light is after mating plate 2 filters after filtration under water, having only the C-band ultraviolet ray to see through optical filter 2 shines on the photodiode D1, photodiode D1 is converted to electric signal with light signal, little electric current that photodiode D1 is produced amplifies to guarantee that it has enough intensity through amplifying circuit, the amplifying circuit output signal is sent into microprocessor system after the A/D conversion, after the metering calibration, just can be converted into corresponding UV radiation intensity level also can show, also have special software simultaneously and come whole detection process is monitored, thus realize to UV intensity under water in real time, continuous monitoring.
Claims (5)
1, a kind of underwater C waveband ultraviolet ray strength detector is characterized in that: described detection instrument comprises detecting head, shell, amplifying circuit, microprocessor system, the detecting head setting in the enclosure,
A, described shell stainless steel material, the connecting portion of shell and detecting head wire outlet place all are provided with O shape water proof ring or silica gel, detecting head inside is filled with silica gel, have light well on the shell, light well is provided with optical filter, detecting head is installed in the light well place, can by enter by light well irradiate light to the position;
B, described detecting head adopt the ultraviosensitive special photoelectric diode of C-band;
C, described amplifying circuit cooperate peripheral electric capacity, resistance to form by operational amplifier, and detecting head output is connected with the input end of amplifying circuit, and the output terminal of amplifying circuit is connected with microprocessor system.
2, underwater C waveband ultraviolet ray strength detector according to claim 1, it is characterized in that: described amplifying circuit is electrically connected with the resistance R 1 of series connection, the common port of resistance R 2 for the input end in the same way at operational amplifier, resistance R 1 another termination+5V power supply, resistance R 2 other end ground connection, photodiode plus earth, negative pole is connected with the operational amplifier reverse input end, is connected in parallel to capacitor C and resistance R between the reverse input end of operational amplifier and the output terminal.
3, underwater C waveband ultraviolet ray strength detector according to claim 1 and 2 is characterized in that:
Described optical filter only adopts can interfere narrow band pass filter by the ultraviolet ultraviolet of C-band.
4, underwater C waveband ultraviolet ray strength detector according to claim 1 and 2 is characterized in that:
The photodiode that described special photoelectric diode adopts wide band gap semiconducter AlGaN material to make.
5, underwater C waveband ultraviolet ray strength detector according to claim 1 and 2 is characterized in that:
Be connected with display device on the described microprocessor system data output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710074941XA CN101324464A (en) | 2007-06-13 | 2007-06-13 | Underwater C waveband ultraviolet ray strength detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710074941XA CN101324464A (en) | 2007-06-13 | 2007-06-13 | Underwater C waveband ultraviolet ray strength detector |
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| Publication Number | Publication Date |
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| CN101324464A true CN101324464A (en) | 2008-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA200710074941XA Pending CN101324464A (en) | 2007-06-13 | 2007-06-13 | Underwater C waveband ultraviolet ray strength detector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108199691A (en) * | 2017-12-19 | 2018-06-22 | 西安培华学院 | A kind of data transfer of computer anti-interference process device |
| CN108645511A (en) * | 2018-05-14 | 2018-10-12 | 电子科技大学 | A kind of new ultra-violet light intensity detector of Mach-Zehnder interferometers structure |
-
2007
- 2007-06-13 CN CNA200710074941XA patent/CN101324464A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108199691A (en) * | 2017-12-19 | 2018-06-22 | 西安培华学院 | A kind of data transfer of computer anti-interference process device |
| CN108199691B (en) * | 2017-12-19 | 2021-05-14 | 西安培华学院 | Computer data transmission anti-interference processor |
| CN108645511A (en) * | 2018-05-14 | 2018-10-12 | 电子科技大学 | A kind of new ultra-violet light intensity detector of Mach-Zehnder interferometers structure |
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Open date: 20081217 |