CN203688409U - Atmospheric particulate matter monitoring device - Google Patents
Atmospheric particulate matter monitoring device Download PDFInfo
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- CN203688409U CN203688409U CN201420025956.2U CN201420025956U CN203688409U CN 203688409 U CN203688409 U CN 203688409U CN 201420025956 U CN201420025956 U CN 201420025956U CN 203688409 U CN203688409 U CN 203688409U
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Abstract
The utility model discloses an atmospheric particulate matter monitoring device which comprises a bracket with a tubular structure, a plurality of particulate matter cutters arranged on the upper part of the outer wall of the bracket, and an air pump for driving the particulate matter cutters, wherein output pipes are arranged on the particulate matter cutters; a sliding mechanism alternatively butted with the particulate matter cutters is arranged in the bracket; the sliding mechanism is butted with the particulate matter cutters, so that particulate matters cut by the particulate matter cutters are conveyed to a particulate matter collection device for collection through a butting pipe; a weighing sensor is used for detecting the weight of the particulate matters; a signal input circuit comprises a front-end filtering circuit, a small signal amplification circuit and a rear-end filtering circuit; a main control circuit receives and processes a signal of the signal input circuit and communicates with an upper computer. The atmospheric particulate matter monitoring device can monitor the particulate matter content of atmosphere and supply air quality reference data to the public.
Description
Technical field
The utility model relates to the detection field of Atmospheric particulates, relates in particular to a kind ofly can monitor the particle content in atmosphere, provide the atmosphere particle monitoring device of air quality reference data for the public.
Background technology
Along with industrial development, environment for human survival is destroyed, and the situation is tense for its Air Contamination, and airborne suspended particulate substance can cause haze weather.
Weather scientist and medical expert think, the haze weather being caused by fine particle is even larger than sandstorm to the harm of health.10 microns of above particles of particle diameter, can be blocked in outside people's nose; The particle of particle diameter between 2.5 microns to 10 microns, can enter the upper respiratory tract, but partly can excrete by sputum etc., also can be stopped by the fine hair of nasal cavity inside in addition, relatively little to human health damage; And the fine particle of particle diameter below 2.5 microns, diameter is equivalent to human hair's 1/10 size, is difficult for being blocked.After being inhaled into human body, can directly enter bronchus, disturb the gas exchange of lung, cause the disease that comprises the aspects such as asthma, bronchitis and cardiovascular disease.
Particle detection in atmosphere refers to fix a point to being present in airborne polluter, continuous or sampling and measurement regularly.For air quality is monitored, generally set up several air monitering points in a city, the instrument of monitoring is automatically installed and is done monitoring continuously, monitoring result is sent someone regularly to fetch, analyzed and obtained relevant data.And in current big city, be long-term to the detection of the particle concentration in atmosphere, if each air monitering point will manually be fetched, need staff to do more loaded down with trivial details work.
Therefore, need a kind of atmosphere particle monitoring device that can carry out to the particle in atmosphere automatic determination and analysis badly.
Utility model content
The purpose of this utility model is to provide and a kind ofly can monitors the particle content in atmosphere, provide the atmosphere particle monitoring device of air quality reference data for the public.
To achieve these goals, the technical scheme that the utility model provides is: a kind of atmosphere particle monitoring device is provided, comprises: particle harvester, LOAD CELLS, signal input circuit, governor circuit and host computer:
Particle harvester, described particle harvester comprises the support of tubular structure, some cutter for particles that the outer wall top of described support arranges, for driving the air pump of described cutter for particles, on described cutter for particles, be provided with efferent duct, in described support, be provided with the slide mechanism that can select from different described cutter for particles docking, described slide mechanism is provided with the butt tube docking with the efferent duct of described cutter for particles, particle gathering-device, the particle that described cutter for particles cuts to is sent to described particle gathering-device by described butt tube and collects, and described particle gathering-device is provided with LOAD CELLS, described LOAD CELLS is carried out weight detecting to the collected particle of described particle gathering-device,
Signal input circuit, described signal input circuit is connected with described LOAD CELLS, comprise the prime filtering circuit, small signal amplification circuit, the rear class filtering circuit that are electrically connected successively, described signal input circuit receives the signal of described LOAD CELLS, carry out filtering by described prime filtering circuit, described small signal amplification circuit amplifies signal, again carries out accessing governor circuit after filtering by described rear class filtering circuit;
Governor circuit, described governor circuit is connected with described signal input circuit, and receives the signal of described signal input circuit and process, and communicates with host computer;
Host computer, described host computer is connected with described governor circuit, and described host computer receives the signal of described governor circuit and shows, and described host computer is also to described governor circuit download control program.
Described particle gathering-device is suspended on described butt tube outer wall, comprise suspended portion and horizontal component, and described suspended portion and horizontal component are encircled into a particle collection space, described horizontal component is provided with the just glass fiber filter that is coated with silicone oil to described butt tube, and described suspended portion is coated with for preventing particle film that escape, gas penetration potential material.
Between described governor circuit and described host computer, be also provided with communication interface circuit, for described host computer provides hardware supported in the time that described governor circuit downloads.
Described governor circuit is also connected with man-machine interface circuit, and described man-machine interface circuit comprises display interface device circuit and keyboard interface circuit.
Described prime filtering circuit adopts Order RC low pass passive filtering network, on signal wire SEN-, be connected with resistance R 1 and R2, on signal wire SEN+, be connected with resistance R 3 and R4, there is the circuit being together in series by capacitor C 1 and C2 in the negative pole cross-over connection of described resistance R 1 and R3, also cross-over connection has capacitor C 5, have by capacitor C 3 and C4 in the negative pole cross-over connection of resistance R 2 and R4, also cross-over connection has capacitor C 6, and the minus earth AGND of capacitor C 1 and capacitor C 3.
The resistance value of resistance R 1 and resistance R 3 is 100 ohm, the resistance of resistance R 2 and resistance R 4 is 1K ohm, and the capacitance of capacitor C 1 and capacitor C 2 is 10 μ F, and the capacitance of capacitor C 5 is 0.1 μ F, the capacitance of capacitance C3 and C4 is 1 μ F, and the capacitance of capacitor C 6 is 1 μ F.
Described small signal amplification circuit comprises that model is the amplifying circuit electrical chip U1 of INA141 and the communication circuit chip U2 that model is 0PA277UA, signal wire SEN-connects the IN-pin of U1, signal wire SEN+ connects the IN+ pin of U1, the V+ of U1, the power supply of connect respectively+15V of V-pin and-power supply of 15V, the V+ of U2, the power supply of connect respectively+15V of V-pin and-power supply of 15V, and the resistance R 6 that the Vo pin of U1 is 10K by resistance is connected with the IN+ pin of U2, resistance R 5 ground connection that the IN-pin of U2 is 10K by resistance, and between the IN-pin of U2 and OUT pin also cross-over connection to have resistance be the resistance R 7 of 13K.
Described rear class filtering circuit comprises that model is the chip U3 of MAX293, the V+ of U3 and connect respectively+5V of V-pin and-power supply of 5V, be connected with the OPIN-pin of resistance R 10 and U3 through resistance R 8 from described small signal amplification circuit signal out, between the OPIN-of U3 and OPOUT pin, also cross-over connection has capacitor C 8, and ground connection after the OPOUT pin of U3 is connected with resistance R 9 and capacitor C 7, between the CLK of U3 and GND pin, cross-over connection has capacitor C 9 ground connection afterwards, and the capacitance of capacitor C 9 is 33nF.
Described particle harvester also includes for driving described slide mechanism to slide in described support, and the drive unit of selection and different described cutter for particles docking, described drive unit and described governor circuit are electrically connected, and described governor circuit writes the program that described drive unit is controlled in advance.
Described slide mechanism is the structure that hollow and outer wall offer air vent.
Described cutter for particles comprises PM10, PM2.5, PM1 cutter for particles.
In described slide mechanism, be provided with two or two above butt tubes that can dock from different described cutter for particles simultaneously.
Described cutter for particles is communicated with described butt tube by described efferent duct, and is also provided with the O-ring seal that reaches hermetic seal between described efferent duct and butt tube.
Also include servomotor, the inwall of described support is provided with guide rail, and on described slide mechanism, be provided with the slide block coordinating with described slide rail, one end of described slide mechanism is provided with connecting rod, described servomotor is connected with described connecting rod, and described servomotor drives described slide mechanism to slide in described support by described connecting rod.
Compared with prior art, in the utility model atmosphere particle monitoring device, because described particle harvester comprises the support of tubular structure, on the outer wall of described support, be provided with some cutter for particles, in described support, be provided with the slide mechanism that can select from different described cutter for particles docking, in described slide mechanism, be provided with the butt tube docking with described cutter for particles, particle gathering-device, the particle that described cutter for particles cuts to is sent to described particle gathering-device by described butt tube and collects, and described particle gathering-device is provided with LOAD CELLS, described LOAD CELLS is carried out weight detecting to the collected particle of described particle gathering-device, therefore in use, can in described cutter for particles, cut PM10, PM2.5, the particle of the different-grain diameters such as PM1, particle content in atmosphere is monitored, for the public provides air quality reference data.
By following description also by reference to the accompanying drawings, it is more clear that the utility model will become, and these accompanying drawings are used for explaining embodiment of the present utility model.
Accompanying drawing explanation
Fig. 1 is the circuit theory module map of an embodiment of the utility model atmosphere particle monitoring device.
Fig. 2 is the structural representation of the particle harvester of atmosphere particle monitoring device as shown in Figure 1.
Fig. 3 is the principle module map of the signal input circuit of atmosphere particle monitoring device as shown in Figure 1.
Fig. 4 is the circuit theory diagrams of the prime filtering circuit of atmosphere particle monitoring device as shown in Figure 1.
Fig. 5 is the circuit theory diagrams of the small signal amplification circuit of atmosphere particle monitoring device as shown in Figure 1.
Fig. 6 is the circuit theory diagrams of the rear class filtering circuit of atmosphere particle monitoring device as shown in Figure 1.
Embodiment
With reference now to accompanying drawing, describe embodiment of the present utility model, in accompanying drawing, similarly element numbers represents similar element.As mentioned above, as shown in Fig. 1-6, the atmosphere particle monitoring device 100 that the utility model provides, comprising: particle harvester 1, LOAD CELLS 2, signal input circuit 3, governor circuit 4 and host computer 5:
Governor circuit 4, described governor circuit 4 is connected with described signal input circuit 3, and receives the signal of described signal input circuit and process, and communicates with host computer 5;
Host computer 5, described host computer 5 is connected with described governor circuit 4, and described host computer 5 receives the signal of described governor circuit 4 and shows, and described host computer 5 is also to described governor circuit 4 download control programs.
Described particle gathering-device 17 is suspended on described butt tube 16 outer walls, comprise suspended portion 171 and horizontal component 172, and described suspended portion 171 and horizontal component 172 are encircled into a particle collection space 173, described horizontal component 172 is provided with the just glass fiber filter that is coated with silicone oil to described butt tube 16, and described suspended portion 171 is coated with for preventing particle film that escape, gas penetration potential material.
Between described governor circuit 4 and described host computer 5, be also provided with communication interface circuit 6, for described host computer 5 provides hardware supported in the time that described governor circuit 4 downloads.
Described governor circuit 4 is also connected with man-machine interface circuit 7, and described man-machine interface circuit 7 comprises display interface device circuit 71 and keyboard interface circuit 72.
Described prime filtering circuit 31 adopts Order RC low pass passive filtering network, on signal wire SEN-, be connected with resistance R 1 and R2, on signal wire SEN+, be connected with resistance R 3 and R4, there is the circuit being together in series by capacitor C 1 and C2 in the negative pole cross-over connection of described resistance R 1 and R3, also cross-over connection has capacitor C 5, have by capacitor C 3 and C4 in the negative pole cross-over connection of resistance R 2 and R4, also cross-over connection has capacitor C 6, and the minus earth AGND of capacitor C 1 and capacitor C 3.
The resistance value of resistance R 1 and resistance R 3 is 100 ohm, the resistance of resistance R 2 and resistance R 4 is 1K ohm, and the capacitance of capacitor C 1 and capacitor C 2 is 10 μ F, and the capacitance of capacitor C 5 is 0.1 μ F, the capacitance of capacitance C3 and C4 is 1 μ F, and the capacitance of capacitor C 6 is 1 μ F.
Described small signal amplification circuit 32 comprises that model is the amplifying circuit electrical chip U1 of INA141 and the communication circuit chip U2 that model is 0PA277UA, signal wire SEN-connects the IN-pin of U1, signal wire SEN+ connects the IN+ pin of U1, the V+ of U1, the power supply of connect respectively+15V of V-pin and-power supply of 15V, the V+ of U2, the power supply of connect respectively+15V of V-pin and-power supply of 15V, and the resistance R 6 that the Vo pin of U1 is 10K by resistance is connected with the IN+ pin of U2, resistance R 5 ground connection that the IN-pin of U2 is 10K by resistance, and between the IN-pin of U2 and OUT pin also cross-over connection to have resistance be the resistance R 7 of 13K.
Described rear class filtering circuit comprises that model is the chip U3 of MAX293, the V+ of U3 and connect respectively+5V of V-pin and-power supply of 5V, be connected with the OPIN-pin of resistance R 10 and U3 through resistance R 8 from described small signal amplification circuit 32 signal out, between the OPIN-of U3 and OPOUT pin, also cross-over connection has capacitor C 8, and ground connection after the OPOUT pin of U3 is connected with resistance R 9 and capacitor C 7, between the CLK of U3 and GND pin, cross-over connection has capacitor C 9 ground connection afterwards, and the capacitance of capacitor C 9 is 33nF.
Described particle harvester 1 also includes for driving described slide mechanism 15 in the interior slip of described support 10, and the drive unit of selection and 11,12,13,14 docking of different described cutter for particles, described drive unit and described governor circuit 4 are electrically connected, and described governor circuit 4 writes the program that described drive unit is controlled in advance.
Described slide mechanism 15 is the structure that hollow and outer wall offer air vent.
Described cutter for particles 11,12,13,14 comprises PM10, PM2.5, PM1 cutter for particles.
In one embodiment, in described slide mechanism 15, be provided with two or two above butt tubes that can dock from different described cutter for particles 11,12,13,14 simultaneously.
Described cutter for particles 11,12,13,14 is communicated with described butt tube by efferent duct, and is also provided with the O-ring seal 20 that reaches hermetic seal between described efferent duct 19 and butt tube 16.
Also include servomotor (not showing on figure), the inwall of described support 10 is provided with guide rail (not showing on figure), and on described slide mechanism 15, be provided with the slide block 151 coordinating with described slide rail, one end of described slide mechanism 15 is provided with connecting rod 152, described servomotor is connected with described connecting rod 152, and described servomotor drives described slide mechanism 15 in the interior slip of described support 10 by described connecting rod 152.
In conjunction with Fig. 1-6, the utility model atmosphere particle monitoring device 100, because described particle harvester 1 comprises the support 10 of tubular structure, on the outer wall of described support 10, be provided with four cutter for particles 11, 12, 13, 14, in described support 10, be provided with and can select and different described cutter for particles 11, 12, 13, the slide mechanism 15 of 14 docking, in described slide mechanism 15, be provided with and described cutter for particles 11, 12, 13, the butt tube 16 of 14 docking, particle gathering-device 17, described cutter for particles 11, 12, 13, 14 particles that cut to are sent to described particle gathering-device 17 by described butt tube 16 and collect, and described particle gathering-device 17 is provided with LOAD CELLS 18, described LOAD CELLS 18 is carried out weight detecting to the collected particle of described particle gathering-device 17, therefore in use, can in described cutter for particles, cut the particle of the different-grain diameters such as PM10, PM2.5, PM1, the particle content in atmosphere is monitored, provided air quality reference data for the public.
Above disclosed is only preferred embodiment of the present utility model, certainly can not limit with this interest field of the utility model, and the equivalent variations of therefore doing according to the utility model claim, still belongs to the scope that the utility model is contained.
Claims (14)
1. an atmosphere particle monitoring device, comprising: particle harvester, LOAD CELLS, signal input circuit, governor circuit and host computer, is characterized in that:
Described particle harvester comprises the support of tubular structure, some cutter for particles that the outer wall top of described support arranges, for driving the air pump of described cutter for particles, on described cutter for particles, be provided with efferent duct, in described support, be provided with the slide mechanism that can select from different described cutter for particles docking, described slide mechanism is provided with the butt tube docking with the efferent duct of described cutter for particles, particle gathering-device, the particle that described cutter for particles cuts to is sent to described particle gathering-device by described butt tube and collects, and described particle gathering-device is provided with LOAD CELLS, described LOAD CELLS is carried out weight detecting to the collected particle of described particle gathering-device,
Described signal input circuit is connected with described LOAD CELLS, comprise the prime filtering circuit, small signal amplification circuit, the rear class filtering circuit that are electrically connected successively, described signal input circuit receives the signal of described LOAD CELLS, carry out filtering by described prime filtering circuit, described small signal amplification circuit amplifies signal, again carries out accessing governor circuit after filtering by described rear class filtering circuit;
Described governor circuit is connected with described signal input circuit, and receives the signal of described signal input circuit and process, and communicates with host computer;
Described host computer is connected with described governor circuit, and described host computer receives the signal of described governor circuit and shows, and described host computer is also to described governor circuit download control program.
2. atmosphere particle monitoring device as claimed in claim 1, it is characterized in that, described particle gathering-device is suspended on described butt tube outer wall, comprise suspended portion and horizontal component, and described suspended portion and horizontal component are encircled into a particle collection space, described horizontal component is provided with the just glass fiber filter that is coated with silicone oil to described butt tube, and described suspended portion is coated with for preventing particle film that escape, gas penetration potential material.
3. atmosphere particle monitoring device as claimed in claim 1 or 2, is characterized in that, between described governor circuit and described host computer, is also provided with communication interface circuit, for described host computer provides hardware supported in the time that described governor circuit downloads.
4. atmosphere particle monitoring device as claimed in claim 3, is characterized in that, described governor circuit is also connected with man-machine interface circuit, and described man-machine interface circuit comprises display interface device circuit and keyboard interface circuit.
5. atmosphere particle monitoring device as claimed in claim 3, it is characterized in that, described prime filtering circuit adopts Order RC low pass passive filtering network, on signal wire SEN-, be connected with resistance R 1 and R2, on signal wire SEN+, be connected with resistance R 3 and R4, there is the circuit being together in series by capacitor C 1 and C2 in the negative pole cross-over connection of described resistance R 1 and R3, also cross-over connection has capacitor C 5, have by capacitor C 3 and C4 in the negative pole cross-over connection of resistance R 2 and R4, also cross-over connection has capacitor C 6, and the minus earth AGND of capacitor C 1 and capacitor C 3.
6. atmosphere particle monitoring device as claimed in claim 5, it is characterized in that, the resistance value of resistance R 1 and resistance R 3 is 100 ohm, the resistance of resistance R 2 and resistance R 4 is 1K ohm, the capacitance of capacitor C 1 and capacitor C 2 is 10 μ F, the capacitance of capacitor C 5 is 0.1 μ F, and the capacitance of capacitance C3 and C4 is 1 μ F, and the capacitance of capacitor C 6 is 1 μ F.
7. the atmosphere particle monitoring device as described in claim 5 or 6, it is characterized in that, described small signal amplification circuit comprises that model is the amplifying circuit electrical chip U1 of INA141 and the communication circuit chip U2 that model is 0PA277UA, signal wire SEN-connects the IN-pin of U1, signal wire SEN+ connects the IN+ pin of U1, the V+ of U1, the power supply of connect respectively+15V of V-pin and-power supply of 15V, the V+ of U2, the power supply of connect respectively+15V of V-pin and-power supply of 15V, and the resistance R 6 that the Vo pin of U1 is 10K by resistance is connected with the IN+ pin of U2, resistance R 5 ground connection that the IN-pin of U2 is 10K by resistance, and between the IN-pin of U2 and OUT pin also cross-over connection to have resistance be the resistance R 7 of 13K.
8. atmosphere particle monitoring device as claimed in claim 7, it is characterized in that, described rear class filtering circuit comprises that model is the chip U3 of MAX293, the V+ of U3 and connect respectively+5V of V-pin and-power supply of 5V, be connected with the OPIN-pin of resistance R 10 and U3 through resistance R 8 from described small signal amplification circuit signal out, between the OPIN-of U3 and OPOUT pin, also cross-over connection has capacitor C 8, and ground connection after the OPOUT pin of U3 is connected with resistance R 9 and capacitor C 7, between the CLK of U3 and GND pin, cross-over connection has capacitor C 9 ground connection afterwards, the capacitance of capacitor C 9 is 33nF.
9. the atmosphere particle monitoring device as described in claim 1 or 8, it is characterized in that, described particle harvester also includes for driving described slide mechanism to slide in described support, and the drive unit of selection and different described cutter for particles docking, described drive unit and described governor circuit are electrically connected, and described governor circuit writes the program that described drive unit is controlled in advance.
10. the atmosphere particle monitoring device as described in claim 1 or 8, is characterized in that, described slide mechanism is the structure that hollow and outer wall offer air vent.
11. atmosphere particle monitoring devices as described in claim 1 or 8, is characterized in that, described cutter for particles comprises PM10, PM2.5, PM1 cutter for particles.
12. atmosphere particle monitoring devices as claimed in claim 11, is characterized in that, are provided with two or two above butt tubes that can dock from different described cutter for particles in described slide mechanism simultaneously.
13. atmosphere particle monitoring devices as claimed in claim 11, is characterized in that, described cutter for particles is communicated with described butt tube by described efferent duct, and is also provided with the O-ring seal that reaches hermetic seal between described efferent duct and butt tube.
14. atmosphere particle monitoring devices as claimed in claim 11, it is characterized in that, also include servomotor, the inwall of described support is provided with guide rail, and on described slide mechanism, be provided with the slide block coordinating with described slide rail, one end of described slide mechanism is provided with connecting rod, and described servomotor is connected with described connecting rod, and described servomotor drives described slide mechanism to slide in described support by described connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420025956.2U CN203688409U (en) | 2014-01-16 | 2014-01-16 | Atmospheric particulate matter monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420025956.2U CN203688409U (en) | 2014-01-16 | 2014-01-16 | Atmospheric particulate matter monitoring device |
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| Publication Number | Publication Date |
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| CN203688409U true CN203688409U (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420025956.2U Expired - Fee Related CN203688409U (en) | 2014-01-16 | 2014-01-16 | Atmospheric particulate matter monitoring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760077A (en) * | 2014-01-16 | 2014-04-30 | 深圳市华测检测技术股份有限公司 | Atmospheric particulate monitoring system |
| CN105929107A (en) * | 2016-03-24 | 2016-09-07 | 北京林业大学 | Method for determination of atmospheric particulates weakening by forest |
-
2014
- 2014-01-16 CN CN201420025956.2U patent/CN203688409U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760077A (en) * | 2014-01-16 | 2014-04-30 | 深圳市华测检测技术股份有限公司 | Atmospheric particulate monitoring system |
| CN103760077B (en) * | 2014-01-16 | 2016-05-25 | 华测检测认证集团股份有限公司 | Atmosphere particle monitoring system |
| CN105929107A (en) * | 2016-03-24 | 2016-09-07 | 北京林业大学 | Method for determination of atmospheric particulates weakening by forest |
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Address after: 518057 Guangdong, Shenzhen Province, Baoan District District, Wei Wei Industrial Park, building C, 70 Patentee after: CENTRE TESTING INTERNATIONAL GROUP Co.,Ltd. Address before: 518057 Guangdong, Shenzhen Province, Baoan District District, Wei Wei Industrial Park, building C, 70 Patentee before: Centre Testing International (Shenzhen) Co.,Ltd. |
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Effective date of registration: 20160810 Address after: 101100 Beijing City branch of Tongzhou District economic and Technological Development Zone, fourteen street huilongsen Science Park Building No. 21 Patentee after: BEIJING CTI NORTH TECHNOLOGY CO.,LTD. Address before: 518057 Guangdong, Shenzhen Province, Baoan District District, Wei Wei Industrial Park, building C, 70 Patentee before: CENTRE TESTING INTERNATIONAL GROUP Co.,Ltd. |
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