CN205071137U - Dustproof camera - Google Patents
Dustproof camera Download PDFInfo
- Publication number
- CN205071137U CN205071137U CN201520728742.6U CN201520728742U CN205071137U CN 205071137 U CN205071137 U CN 205071137U CN 201520728742 U CN201520728742 U CN 201520728742U CN 205071137 U CN205071137 U CN 205071137U
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- dust
- resistance
- module
- dustproof
- abnormal signal
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Abstract
The utility model discloses a dustproof camera, including dust detection circuit and dustproof module, dustproof module during operation is worked as including piece and the fan of atomizing to dustproof module, atomizing piece and fan simultaneous working blowout water smoke, and when the dust was less than the default, the dust detection circuit sent dust abnormal signal and drives the module work of preventing dust, the dust detection circuit includes the dust sensor for the induced environment dust turns into dust sample voltage, dust master module for provide dust reference voltage, the dust is the module relatively, is coupled in the dust sensor, when dust sample voltage is less than dust reference voltage, sends dust abnormal signal. Detect dust concentration and carry out the comparison through the default that sets up through the dust sensor, as dust concentration during above the default for atomizing liquid and dust adhesion increase its weight, make its be difficult for flutteing and the adhesion on the mirror surface, but slowly subside, guaranteed that the quality of air and mirror surface are clean and tidy.
Description
Technical field
The utility model relates to a kind of dust-proof video camera.
Background technology
Gamma camera camera type is various, and the general principle of its work is all the same: optical image signal is changed into the signal of telecommunication, so that store or transmission.When we take an object, the light that this object reflects camera shots being shot, makes on its sensitive surface focusing on picture pick-up device (target surface of such as camera tube), then by picture pick-up device, light is changed into electric energy, namely obtain " vision signal ".Photosignal is very faint, need be amplified by pre-arcing road, carry out processing and adjusting through various circuit again, the standard signal finally obtained can be delivered on the recording mediums such as video tape recorder and record, or is propagated by broadcasting system or deliver on monitor and show.Because camera function is powerful, so also very welcome in a lot of field, in some monitoring use, camera can be placed on higher position, so cleaning comparatively inconvenience, and the minute surface of camera is very easy to be subject to dust adhesion, so need a kind of camera that can play dustproof effect when dust is more in time.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is to provide dust content near a kind of automatic detection and a kind of dust-proof camera carrying out automatic dustproof when dust concentration is higher.
For achieving the above object, the utility model provides following technical scheme: a kind of dust-proof video camera, comprise dust testing circuit and dustproof module, described dustproof module comprises atomizing piece and blower fan, when described dustproof module work, described atomizing piece and blower fan work ejection water smoke simultaneously, and when dust is lower than preset value, described dust testing circuit sends dust abnormal signal and drives dustproof module work; Described dust testing circuit comprises dust sensor, is converted into dust sampling voltage for induced environment dust; Dust base modules, for providing dust reference voltage; Dust comparison module, is coupled to dust sensor, when dust sampling voltage is lower than dust reference voltage, sends dust abnormal signal.
The utility model can be set to further: described dust base modules comprises the first resistance, the second resistance and the 3rd resistance that are arranged in series successively; The node that described first resistance and the second resistance couple provides reference voltage.
The utility model can be set to further: described 3rd resistance is adjustable resistance.
The utility model can be set to further: described first resistor coupled in parallel is provided with anti-interference module, and described anti-interference module comprises the 4th resistance and the switch element be arranged in series, and the controlled terminal of described switch element is coupled to dust abnormal signal.
By adopting technique scheme, serve following effect compared to existing technology: by dust sensor dust concentration detected and compared by the preset value arranged, when dust concentration exceedes preset value, export dust abnormal signal to dustproof module, atomizing piece is started working atomized water liquid, and taken out of by blower fan, the liquid of atomization and dust are adhered to, increase its weight, make it not easily wave and stick on minute surface, but slowly sedimentation, ensure that the quality of air and minute surface clean and tidy.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is circuit diagram one;
Fig. 3 is circuit diagram two;
Fig. 4 is circuit diagram three;
Fig. 5 is circuit diagram four.
Reference numeral: 101, dust sensor; 102, dust base modules; 103, dust comparison module; 104, anti-interference module; 210, multi resonant oscillating circuit; 220, no-load voltage ratio circuit; 300, atomizing piece drive circuit; 400, fan drive circuit; 500, heating wire drive circuit.
Embodiment
Referring to figs. 1 through Fig. 5, the utility model embodiment is described further.
With reference to shown in Fig. 2, comprise dust testing circuit and subminiature air cleaner, when dust is lower than preset value, described dust testing circuit sends dust abnormal signal and drives anion generator work; Described dust testing circuit comprises dust sensor 101, is converted into dust sampling voltage for induced environment dust; Dust base modules 102, for providing dust reference voltage; Dust comparison module 103, is coupled to dust sensor 101, when dust sampling voltage is lower than dust reference voltage, sends dust abnormal signal.Dust sensor 101 is preferably GCG1000 type, and its output signal standard selects 1MA, is arranged in parallel a resistance R7 for the current signal of output is converted into voltage signal.Described dust base modules 102 comprises the first resistance, the second resistance and the 3rd resistance that are arranged in series successively; The node that described first resistance and the second resistance couple provides reference voltage.Described 3rd resistance is adjustable resistance.Described first resistor coupled in parallel is provided with anti-interference module 104, and described anti-interference module 104 comprises the 4th resistance and the switch element be arranged in series, and the controlled terminal of described switch element is coupled to dust abnormal signal.Dust abnormal signal is also sent to any terminal by wireless module and carries out unified monitoring maintenance, is relatively applicable to Administrative Area dust Control.Dust comparison module 103 its include comparator, its model elects LM355 as, its positive input terminal couples humidity base modules 102, negative input end couples humidity tactility apparatus, its output is coupled with the 5th resistance R5 and the 6th resistance R6 that are arranged in series, its resistance is all set to 10K Europe, the node that 5th resistance R5 and the 6th resistance R6 couples is coupled with NPN pipe, when exporting as high level, the conducting of described NPN pipe, send humidity abnormal signal S1 to wireless module, and control the first relay coil KM1 obtains electric simultaneously.
Humidification drive circuit 200 comprises the first relay normally open contact km1 and the second normally opened contact km2, and one is terminated at power level; Multi-resonant oscillating circuit 210, comprises one 555 timers, and the output of described 555 timers is connected to atomizing piece drive circuit 300, for providing drive singal for atomizing piece; First pin ground connection of described 555 timers, second pin and the 6th pin couple, and and between the first relay normally open contact, be connected with the 8th adjustable resistance R8 and the 7th resistance R7,7th pin is connected to the node that the 8th adjustable resistance R8 and the 7th resistance R7 is connected to form, described second pin and ground are also connected with the first electric capacity C1 between holding, and the 5th pin and ground are connected with the second electric capacity C2 between holding.Can control by controlling the 8th adjustable resistance R8 the duty ratio that it exports PWM ripple, its duty ratio exported can be controlled by the capacity arranging the second electric capacity C2.7th resistance R7 resistance is preferably 10 kilo-ohms, and the 8th adjustable resistance R8 resistance is preferably 1M ohm, and the first electric capacity C1 capacity is preferably 100uF, and the second electric capacity C2 capacity elects 0.01uF as, and its maximum output frequency is about 100000HZ.Signal source required for controlling atomizing piece function has: 1, need 24V to power; 2, need the high-frequency PWM signal that adjustable, its output frequency minimum requirements is 1.7MHZ.
No-load voltage ratio circuit 220, is connected between the output of 555 timers and blower fan FAN1 drive circuit 4, the signal of telecommunication that 555 timers export is converted to the driving signal of telecommunication that blower fan FAN1 is suitable for.Comprise an optical coupling isolator, its input is connected to the 3rd pin Uout1 of 555 timers, its output is high level output, output is also coupled with one the 3rd electric capacity C3 and the 9th resistance R9 in parallel with it between holding with ground, described 3rd electric capacity C3 and the 9th resistance R9 forms a small-sized RC concussion loop, its output is connected to the positive pole of the 3rd comparator, can change by the parameter arranging the 3rd electric capacity C3 and the 9th resistance R9 the duty ratio that it exports PWM ripple, be become and the signal of telecommunication of blower fan FAN1 can be driven to use.Described optical coupling isolator selects 6N137, and the 3rd electric capacity C3 capacity elects 10uF as, and the 9th adjustable resistance maximum value elects 100 ohm as, and LM355 comparator selected by the 3rd comparator.The multi resonant oscillating circuit be formed by connecting by 555 timers is as the drive circuit of blower fan and atomizing piece, and structure is simple, has greatly saved circuit cost and design space.With reference to shown in Fig. 5 and Fig. 1, U0 is the output pwm signal of the 3rd pin Uout1 of 555 timers, and Uout is the control principle of no-load voltage ratio circuit 220 to its duty ratio, does not repeat at this.Atomizing piece drive circuit 300, it comprises an input pin, as shown in Figure 3 be common drive circuit, the 3rd pin Uout1 of 555 timers is used for providing to atomizing piece driving PWM ripple, control atomizing piece shakes, and no-load voltage ratio circuit 220 keeps the work of an output signal controlling blower fan.
Blower fan FAN1 drive circuit 4, as shown in Figure 5, the output Uout2 control blower fan FAN1 of the 3rd comparator is enable, can control blower fan FAN1 wind speed by regulating the 9th resistance R9.Described atomizing piece drive circuit 300 and blower fan FAN1 drive circuit 4, its control switch pipe (M1 and M2) all elects metal-oxide-semiconductor as, and its drive circuit switching tube being more suitable for doing blower fan FAN1 and atomizing piece relative to triode uses.
The above is only preferred implementation of the present utility model, protection range of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (4)
1. a dust-proof video camera, it is characterized in that: comprise dust testing circuit and dustproof module, described dustproof module comprises atomizing piece and blower fan, when described dustproof module work, described atomizing piece and blower fan work ejection water smoke simultaneously, when dust is lower than preset value, described dust testing circuit sends dust abnormal signal and drives dustproof module work;
Described dust testing circuit comprises
Dust sensor, is converted into dust sampling voltage for induced environment dust;
Dust base modules, for providing dust reference voltage;
Dust comparison module, is coupled to dust sensor, when dust sampling voltage is lower than dust reference voltage, sends dust abnormal signal.
2. a kind of dust-proof video camera as claimed in claim 1, is characterized in that: described dust base modules comprises the first resistance, the second resistance and the 3rd resistance that are arranged in series successively; The node that described first resistance and the second resistance couple provides reference voltage.
3. a kind of dust-proof video camera as claimed in claim 2, is characterized in that: described 3rd resistance is adjustable resistance.
4. a kind of dust-proof video camera as claimed in claim 3, it is characterized in that: described first resistor coupled in parallel is provided with anti-interference module, described anti-interference module comprises the 4th resistance and the switch element be arranged in series, and the controlled terminal of described switch element is coupled to dust abnormal signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520728742.6U CN205071137U (en) | 2015-09-19 | 2015-09-19 | Dustproof camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520728742.6U CN205071137U (en) | 2015-09-19 | 2015-09-19 | Dustproof camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205071137U true CN205071137U (en) | 2016-03-02 |
Family
ID=55397633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520728742.6U Expired - Fee Related CN205071137U (en) | 2015-09-19 | 2015-09-19 | Dustproof camera |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205071137U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105625507A (en) * | 2016-03-08 | 2016-06-01 | 张舒维 | High-efficiency novel air water maker |
| CN105910967A (en) * | 2016-05-24 | 2016-08-31 | 郭细婷 | Domestic raise dust tester |
| CN106926791A (en) * | 2017-04-24 | 2017-07-07 | 南京云趟信息技术有限公司 | A kind of camera detecting system for engineering truck |
| CN107744966A (en) * | 2017-10-25 | 2018-03-02 | 安徽锐视光电技术有限公司 | A kind of dust guard based on electromagnetic shielding |
-
2015
- 2015-09-19 CN CN201520728742.6U patent/CN205071137U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105625507A (en) * | 2016-03-08 | 2016-06-01 | 张舒维 | High-efficiency novel air water maker |
| CN105625507B (en) * | 2016-03-08 | 2018-06-15 | 刘行 | A kind of high efficiency air water machine |
| CN105910967A (en) * | 2016-05-24 | 2016-08-31 | 郭细婷 | Domestic raise dust tester |
| CN106926791A (en) * | 2017-04-24 | 2017-07-07 | 南京云趟信息技术有限公司 | A kind of camera detecting system for engineering truck |
| CN107744966A (en) * | 2017-10-25 | 2018-03-02 | 安徽锐视光电技术有限公司 | A kind of dust guard based on electromagnetic shielding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160302 Termination date: 20190919 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |