CN105424179A - Biohazard safety cabinet device with ultraviolet intensity monitoring system - Google Patents
Biohazard safety cabinet device with ultraviolet intensity monitoring system Download PDFInfo
- Publication number
- CN105424179A CN105424179A CN201510906446.5A CN201510906446A CN105424179A CN 105424179 A CN105424179 A CN 105424179A CN 201510906446 A CN201510906446 A CN 201510906446A CN 105424179 A CN105424179 A CN 105424179A
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- signal
- ultraviolet
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- amplifier
- resistance
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 27
- 230000003321 amplification Effects 0.000 claims abstract description 15
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 15
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 238000005286 illumination Methods 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 230000001954 sterilising effect Effects 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 206010011409 Cross infection Diseases 0.000 description 1
- 206010029803 Nosocomial infection Diseases 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/429—Photometry, e.g. photographic exposure meter using electric radiation detectors applied to measurement of ultraviolet light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/44—Electric circuits
Abstract
The invention discloses a biohazard safety cabinet device with an ultraviolet intensity monitoring system. The monitoring system for the biohazard safety cabinet device comprises an ultraviolet photosensitive tube, a current-to-voltage conversion circuit, a signal amplification circuit and a controller, wherein the ultraviolet photosensitive tube receives an ultraviolet light signal and converts the ultraviolet light signal into a current signal; the current signal obtains a 0-5V monitoring voltage signal through the current-to-voltage conversion circuit and the signal amplification circuit; the controller receives the monitoring voltage signal and compares the monitoring voltage signal with an initial signal value; and if the monitoring voltage signal is less than 75% of the initial signal value, an alarm is given. The biohazard safety cabinet device with an ultraviolet intensity monitoring system can monitor the illumination intensity during the disinfection process of an ultraviolet lamp in real time, and can timely give an alarm when the ultraviolet ray disinfection effect is poor.
Description
Technical field
The present invention relates to optical signal detecting technology and bio-safety field, particularly a kind of bio-safety cabinet device with UV intensity monitoring.
Background technology
Biohazard Safety Equipment is a kind of is prevent the purification of air safety feature containing harmfulness or the dissipation of unknown gasoloid in operating process, to the laboratory special protection equipment that operating personnel, product and environment play a protective role.The negative-pressure air-flow that Biohazard Safety Equipment is inwardly sucked by front window gathering hole is in order to protect the safety of personnel; Through high efficiency particulate air filter filter down current in order to protect safety and the cross pollution of product; Air-flow discharges safety cabinet with protection of the environment after high efficiency particulate air filter filters.
Biohazard Safety Equipment inside is provided with uviol lamp usually, for sterilizing, ultraviolet lamp sterilization sterilization belongs to physical sterilization disinfection way, has the advantages such as simple and convenient, broad-spectrum high efficacy, non-secondary pollution, the sterilizing rate of more than 99% can be reached general bacterial virus, can effectively guard against cross infection.But uviol lamp has certain serviceable life, use aging uitraviolet intensity afterwards to reduce for a long time at ultraviolet lamp tube, the effect of sterilizing can weaken, and does not reach the ideal effect to sterilizing in Biohazard Safety Equipment.Generally judge its life-span according to uviol lamp, but this method there is certain limitation service time.But such as fluorescent tube in use surperficial contaminated meeting causes fluorescent tube not arrive service time the substandard situation of uitraviolet intensity, and user knows nothing this.The device of the ultraviolet intensity monitoring adopting patent of the present invention to provide be can be true, real-time reflection safety cabinet in the effect of ultraviolet lamp sterilization.
Summary of the invention
The object of the present invention is to provide a kind of bio-safety cabinet device with UV intensity monitoring, can Real-Time Monitoring ultraviolet lamp disinfection time ultraviolet illumination intensity, and system sends alarm in time when being not activated due to fault uviol lamp or disinfection efficacy of ultraviolet ray is not good.
For solving the problems of the technologies described above, the invention provides:
A kind of UV intensity monitoring system, comprise: ultraviolet light sensing tube, current-to-voltage converting circuit, signal amplification circuit and controller, wherein: ultraviolet light sensing tube receives ultraviolet signal and is converted to current signal, this current signal obtains the monitoring voltage signal of 0 ~ 5V through current-to-voltage converting circuit and signal amplification circuit, controller receives this monitoring voltage signal, it is compared with the initial signal value recorded, when monitoring voltage signal is less than 75% of initial signal value, send audible and visible alarm signal.
Described current-to-voltage converting circuit comprises: the first amplifier, the first electric capacity and the first resistance, wherein: the first electric capacity is connected with output terminal with the negative input of the first amplifier respectively with two ends after the first resistor coupled in parallel, the two ends of ultraviolet light sensing tube are connected with negative input with the electrode input end of the first amplifier respectively, and the output terminal of the first amplifier is connected with signal amplification circuit.
Described signal amplification circuit comprises: the second amplifier, the second resistance and the 3rd resistance, wherein: the two ends of the second resistance are connected with ground wire with the negative input of the second amplifier respectively, the two ends of the 3rd resistance are connected with output terminal with the negative input of the second amplifier respectively, and the electrode input end of the second amplifier is connected with current-to-voltage converting circuit.
A kind of Biohazard Safety Equipment with said system, comprise: filtrator, air velocity transducer, interior drafting board and ultraviolet lamp tube, wherein: filtrator and ultraviolet lamp tube are arranged at the top of internal cavity, interior plate is arranged at side, the top that air velocity transducer is arranged at interior drafting board is right against the position of ultraviolet lamp tube, and ultraviolet light sensing tube is arranged at air velocity transducer top.
Beneficial effect
Usually, experiment operator can carry out the work of ultraviolet reservation sterilizing after use Biohazard Safety Equipment, is such as set in unlatching uviol lamp after coming off duty and carries out the disinfection process of 30 minutes ~ 60 minutes, automatic shutdown after having sterilized.In operatorless situation, automatically complete disinfection, the benefit done like this is apparent, if but uviol lamp is not activated owing to breaking down at all but nobody finds, or reality does not reach the intensity of killing microorganisms, all can there is certain security risk.The bio-safety cabinet device of band UV intensity provided by the present invention monitoring can when opening ultraviolet lamp disinfection function automatic activation uitraviolet intensity supervising device, even if under operatorless situation, system still monitors the ultraviolet strength signal that sends of ultraviolet lamp tube in real time whether in normal range, whether system is normally completed by sound and light alarm and corresponding information prompting user sterilization process, and whether ultraviolet intensity enough reaches the intensity of killing microorganisms.
Accompanying drawing explanation
Fig. 1 is the system schematic of embodiment 1;
Fig. 2-1, Fig. 2-2 are the structural representation of embodiment 2.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Embodiment 1
As shown in Figure 1, the present embodiment comprises: ultraviolet light sensing tube UVD1, current-to-voltage converting circuit 5, signal amplification circuit 6 and controller 7, wherein: ultraviolet light sensing tube UVD1 receives ultraviolet signal and is converted to current signal, this current signal obtains the monitoring voltage signal of 0 ~ 5V through current-to-voltage converting circuit 5 and signal amplification circuit 6, controller 7 receives this monitoring voltage signal, it is compared with the initial signal value recorded, when monitoring voltage signal is less than 75% of initial signal value, give the alarm.
Described current-to-voltage converting circuit 5 comprises: the first amplifier OPAmp1, the first electric capacity C1 and the first resistance R1, wherein: the first electric capacity C1 is connected with output terminal with the negative input of the first amplifier OPAmp1 respectively with two ends after the first resistance R1 parallel connection, the two ends of ultraviolet light sensing tube UVD1 are connected with negative input with the electrode input end of the first amplifier OPAmp1 respectively, and the output terminal of the first amplifier OPAmp1 is connected with signal amplification circuit 6.
Described signal amplification circuit 6 comprises: the second amplifier OPAmp2, the second resistance R2 and the 3rd resistance R3, wherein: the two ends of the second resistance R2 are connected with ground wire with the negative input of the second amplifier OPAmp2 respectively, the two ends of the 3rd resistance R3 are connected with output terminal with the negative input of the second amplifier OPAmp2 respectively, and the electrode input end of the second amplifier OPAmp2 is connected with current-to-voltage converting circuit 5.
Embodiment 2
As shown in Fig. 2-1, the present embodiment is the Biohazard Safety Equipment with embodiment 1 system, comprise: filtrator 1, air velocity transducer 2, interior drafting board 3 and ultraviolet lamp tube 4, wherein: filtrator 1 and ultraviolet lamp tube 4 are arranged at the top of internal cavity, interior plate is arranged at side, and the top that air velocity transducer 2 is arranged at interior drafting board 3 is right against ultraviolet lamp tube.As Fig. 2-2, shown ultraviolet light sensing tube UVD1 is arranged at air velocity transducer 2 top.
When the inner ultraviolet lamp tube 4 of safety cabinet is opened, the ultraviolet light sensing tube UVD1 being arranged on air velocity transducer 2 top on interior plate 3 can receive the ultraviolet signal of 210nm ~ 280nm range of wavelength, be converted into faint current signal to export, convert the voltage signal be converted within the scope of 0 ~ 5V after amplification through current-to-voltage converting circuit 5 and export.Controller 7 starts the output signal value of monitoring ultraviolet light sensing tube UVD1, and current monitor signal value is compared with the initial signal value of record, initial signal value is that brand-new ultraviolet lamp tube 4 dispatches from the factory the signal value that detects when installing, and measures its light intensity preserve as reference point with special ultraviolet irradiation instrument in the distance of regulation.Its normal workflow is as follows:
1) ultraviolet lamp disinfection function is opened, preheating 10 minutes;
2) terminate preheating time, controller starts the output signal value of monitoring ultraviolet light sensing tube UVD1, averages after gathering the signal data in a period of time;
3) the current signal averaging collected and the initial value preserved when dispatching from the factory are made comparisons by system automatically, when monitor signal value lower than initial signal value 75% time, send sound and light alarm and point out user to change ultraviolet lamp tube 4 in time.
Below the preferred embodiment of the invention is illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art can also make all equivalent modification or replacement under the prerequisite without prejudice to the invention spirit, and these equivalent modifications or replacement are all included in the application's claim limited range.
Claims (4)
1. a UV intensity monitoring system, it is characterized in that, comprise: ultraviolet light sensing tube, current-to-voltage converting circuit, signal amplification circuit and controller, wherein: ultraviolet light sensing tube receives ultraviolet signal and is converted to current signal, this current signal obtains the monitoring voltage signal of 0 ~ 5V through current-to-voltage converting circuit and signal amplification circuit, controller receives this monitoring voltage signal, it is compared with the initial signal value recorded, when monitoring voltage signal is less than 75% of initial signal value, give the alarm.
2. system according to claim 1, it is characterized in that, described current-to-voltage converting circuit comprises: the first amplifier, the first electric capacity and the first resistance, wherein: the first electric capacity is connected with output terminal with the negative input of the first amplifier respectively with two ends after the first resistor coupled in parallel, the two ends of ultraviolet light sensing tube are connected with negative input with the electrode input end of the first amplifier respectively, and the output terminal of the first amplifier is connected with signal amplification circuit.
3. system according to claim 1 and 2, it is characterized in that, described signal amplification circuit comprises: the second amplifier, the second resistance and the 3rd resistance, wherein: the two ends of the second resistance are connected with ground wire with the negative input of the second amplifier respectively, the two ends of the 3rd resistance are connected with output terminal with the negative input of the second amplifier respectively, and the electrode input end of the second amplifier is connected with current-to-voltage converting circuit.
4. the Biohazard Safety Equipment with system described in above-mentioned any one claim, it is characterized in that, comprise: filtrator, air velocity transducer, interior drafting board and ultraviolet lamp tube, wherein: filtrator and ultraviolet lamp tube are arranged at the top of internal cavity, interior plate is arranged at side, the top that air velocity transducer is arranged at interior drafting board is right against the position of ultraviolet lamp tube, and ultraviolet light sensing tube is arranged at air velocity transducer top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510906446.5A CN105424179A (en) | 2015-12-09 | 2015-12-09 | Biohazard safety cabinet device with ultraviolet intensity monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510906446.5A CN105424179A (en) | 2015-12-09 | 2015-12-09 | Biohazard safety cabinet device with ultraviolet intensity monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105424179A true CN105424179A (en) | 2016-03-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510906446.5A Pending CN105424179A (en) | 2015-12-09 | 2015-12-09 | Biohazard safety cabinet device with ultraviolet intensity monitoring system |
Country Status (1)
| Country | Link |
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| CN (1) | CN105424179A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109470358A (en) * | 2018-10-19 | 2019-03-15 | 袁宜秀 | A kind of disinfection efficacy of ultraviolet ray detection system and detection method |
| CN111765969A (en) * | 2020-07-27 | 2020-10-13 | 常州明阳软件科技有限公司 | Method and device for detecting disinfection factor of upper-layer horizontal-jet disinfector |
| WO2020208363A1 (en) * | 2019-04-12 | 2020-10-15 | Randox Laboratories Ltd | Monitoring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1619295A (en) * | 2004-12-10 | 2005-05-25 | 南京农业大学 | Pork colour grading instrument |
| JP2005249764A (en) * | 2004-03-02 | 2005-09-15 | Katsumi Mori | Object color measuring system |
| JP2010127739A (en) * | 2008-11-27 | 2010-06-10 | Toppan Printing Co Ltd | Spectral sensitivity characteristic measurement apparatus and spectral sensitivity characteristic measurement method |
| CN102266577A (en) * | 2011-07-21 | 2011-12-07 | 中国科学院上海技术物理研究所 | Intelligent monitoring system for ultraviolet sterilizing cabinet |
-
2015
- 2015-12-09 CN CN201510906446.5A patent/CN105424179A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005249764A (en) * | 2004-03-02 | 2005-09-15 | Katsumi Mori | Object color measuring system |
| CN1619295A (en) * | 2004-12-10 | 2005-05-25 | 南京农业大学 | Pork colour grading instrument |
| JP2010127739A (en) * | 2008-11-27 | 2010-06-10 | Toppan Printing Co Ltd | Spectral sensitivity characteristic measurement apparatus and spectral sensitivity characteristic measurement method |
| CN102266577A (en) * | 2011-07-21 | 2011-12-07 | 中国科学院上海技术物理研究所 | Intelligent monitoring system for ultraviolet sterilizing cabinet |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109470358A (en) * | 2018-10-19 | 2019-03-15 | 袁宜秀 | A kind of disinfection efficacy of ultraviolet ray detection system and detection method |
| WO2020208363A1 (en) * | 2019-04-12 | 2020-10-15 | Randox Laboratories Ltd | Monitoring device |
| CN111765969A (en) * | 2020-07-27 | 2020-10-13 | 常州明阳软件科技有限公司 | Method and device for detecting disinfection factor of upper-layer horizontal-jet disinfector |
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| PB01 | Publication | ||
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Application publication date: 20160323 |