CN1707270B - Environment measuring apparatus - Google Patents
Environment measuring apparatus Download PDFInfo
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- CN1707270B CN1707270B CN 200410048854 CN200410048854A CN1707270B CN 1707270 B CN1707270 B CN 1707270B CN 200410048854 CN200410048854 CN 200410048854 CN 200410048854 A CN200410048854 A CN 200410048854A CN 1707270 B CN1707270 B CN 1707270B
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- measurement device
- dust
- environment measurement
- light receiving
- operating circuit
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Abstract
The environment measuring device includes one hollow casing unit, one operation unit set outside the casing unit, and one measuring unit connected electrically to the operation unit. The casing unit has several ventilation holes. The operation unit includes one display panel. The measuring unit includes one work circuit with stored data, and one dust module connected electrically with the work circuit. The dust module has one heating element, one light emitting device and one light receiving device. When the heating element heats, one upward airflow drawing dust in the air will produce; one light beam is emitted to the airflow for detecting the reflected brightness change caused by the dust inside air, and one voltage signal is obtained. Through data treatment of the voltage signal, the dust state may be obtained and displayed in the display.
Description
[technical field]
The present invention relates to a kind of measurement mechanism, particularly relate to a kind of in can measurement environment dust quantity and the environment measurement device of temperature, humidity.
[background technology]
As shown in Figure 1, general high precision dust measurement device 1 comprises bleed pumping 11, a filter paper 12, a light emitting devices 13, lens 14, a light receiving element 15, and an operating circuit 16.
When this high precision dust measurement device 1 work, this pumping 11 of bleeding can be done the operation of bleeding of constant flow, and makes extraneous air be isolated by this filter paper 12 dust that particle is bigger earlier, and the dust that just can be sampled to then in the specific size carries out measuring operation.
This light emitting devices 13 is a laser diode, is arranged at path one side of air flow, and again through laser beam being focused on behind these lens 14 among the path of air flow.
This light receiving element 15 also is arranged at path one side of air flow, and can be in alignment with focusing place of laser beam, when having dust particle in the air of focusing place and pass through, this light receiving element can be sensed because of dust covers the brightness variation that laser produces moment, and produces the electric current of corresponding varying strength according to its brightness variation.
This moment, these operating circuit 16 meetings converted the current signal of this light receiving element 15 to voltage signal constantly, obtain the digital signal that is easy to count via the conversion of signals of voltage/frequency (V/F) again, and through a counter after specified inside counting sample time, can make division arithmetic by the air capacity of counting resulting dust granules quantity and suction, then can obtain the dust granules number in the unit space, come display result by digital display unit more at last.
From the above, stable and precision when this high precision dust measurement device 1 is to use this bleed pumping 11 and filter paper 12 to reach sampling, and laser beam is focused on some place through a laser diode and this lens 14, so in air, have dust particle through out-of-date, this light receiving element 15 can be made brightness impression to each dust granules that is shone moment, and then reaches the quantity of counting dust and the concrete effect of display density by this operating circuit 16.Yet, because airborne dust will filter through this filter paper 12 earlier, so this filter paper 12 must be changed in use for some time, to keep the stable flow velocity of air, and because the consumes power of this pumping 11 of bleeding is bigger, so the time that actual portability uses is shorter, simultaneously, the noise that is produced during running also can disturb working environment, in addition, since with induction each dust particle by focusing place as metering system, not only need higher-priced laser diode to produce high-quality light source output, also need a high sensitivity, the light receiving element 15 of high reaction velocity so could promptly rise and fall to faint light and produce the strength of current of different sizes.
[summary of the invention]
Purpose of the present invention is to be to provide a kind of filter paper, the pumping of bleeding, laser diode at high price and photo-sensitive cell of need not using, and not only can save manufacturing cost, can also possess the environment measurement device of good accuracy to dust measurement.
Another object of the present invention is to provide a kind of thermal convection mode of utilizing to drive airborne dust particle, to reach the environment measurement device of low power consumption and low noise target.
So environment measurement device of the present invention comprises a hollow housing unit, is arranged at an operating unit of this housing unit lateral surface, and a measuring unit that is electrically connected with this operating unit.
This housing unit comprises a upright operating surface, is a shell back side of opposite setting, a plurality of top at this shell back side and first bleeder vent that is connected with inside of being formed at this operating surface, and is second bleeder vent of opposite setting with this first bleeder vent.
This operating unit comprises a display panel, and an operation keyboard that matches with this display panel.
This measuring unit comprises and is arranged in this housing unit and has data message and as an operating circuit of signal Processing, a dust module that is electrically connected with this operating circuit, and is covered on the cage on this dust module.
This cage has a cover body, is arranged in an air admission hole of this cover body bottom, is arranged in a venthole at this cover body top, and extends to a gas passage of this venthole from this air admission hole.
This dust module has a substrate, is arranged on this substrate and a heater element of contiguous this air admission hole, and is arranged at a light emitting devices and a light receiving element on this substrate respectively.This heater element can produce a updraft because of heating, this updraft can draw extraneous air circulation in regular turn in second bleeder vent, this air admission hole, this venthole and first bleeder vent, this light emitting devices be positioned at this gas passage a side and can be to its illumination beam, this light receiving element can induce the glistening intensity in this gas passage, and along with luminance fluctuation continues to produce an electric signal.This operating circuit has a microprocessor, can store this data message, this data message comprises the value of electrical signals of a plurality of different sizes, and a plurality of and the corresponding concentration value of value of electrical signals, the computing of making comparisons of the electric signal that this microprocessor can be responded to this light receiving element and this data message.
[description of drawings]
Below in conjunction with drawings and Examples environment measurement device of the present invention is elaborated.
Fig. 1 is a synoptic diagram, and general high precision dust measurement device is described;
Fig. 2 is a front elevation, and a preferred embodiment of environment measurement device of the present invention is described;
Fig. 3 is a skeleton view, and the structure of above preferred embodiment is described;
Fig. 4 is a synoptic diagram, and the interior configuration structure of housing of above preferred embodiment is described;
Fig. 5 is a curve map, and the data message of above preferred embodiment is described;
Fig. 6 is a circuit diagram, and an operating circuit of above preferred embodiment is described; And
Fig. 7 is a circuit diagram, and a dust module, a thermal module of above preferred embodiment is described, and a humidity module.
[embodiment]
As Fig. 2, Fig. 3, and shown in Figure 4, a preferred embodiment of environment measurement device of the present invention comprises a hollow housing unit 2, is arranged at an operating unit 3 of the lateral surface of this housing unit 2, and a measuring unit 4 that is electrically connected with this operating unit 3.
This housing unit 2 comprise a upright operating surface 21, with this operating surface be opposite setting a shell back side 22, be formed at first room 23 in this housing unit 2, with separately second room 24 of this first room 23, be arranged at this first room 23 and 24 of second rooms a dividing plate 25, a plurality ofly be formed at the top at this shell back side 22 and first bleeder vent 26 that is connected with this second room 24, and a plurality of respectively with first room 23, second room 24 is connected and be second bleeder vent 27 of opposite setting with first bleeder vent 26.
This operating unit 3 comprises a display panel 31, and an operation keyboard 32 that matches with this display panel 31.This operation keyboard 32 has a power switch 321, and one switches switch 322.
Cooperate Fig. 5, Fig. 6, and it is shown in Figure 7, this measuring unit 4 comprises and is arranged in this first room 23 and has data message (as shown in Figure 5) and as an operating circuit 41 (as shown in Figure 6) of signal Processing, be electrically connected and be arranged at a dust module 42 in this second room 24, be arranged in this first room 23 respectively and a thermal module 43 that is electrically connected with this operating circuit 41 and a humidity module 44 with this operating circuit 41, and a cage 45 that is covered on this dust module 42.
This thermal module 43 is to be used to transmit a voltage signal to this operating circuit 41, and has a temperature detection device 431, and present embodiment is to adopt a thermistor.This humidity module 44 also is to be used to transmit a voltage signal to this operating circuit 41, and has a humidity detecting element 441, and present embodiment adopts a hygristor.When the operator touches the change-over switch 322 of this operation keyboard 32, can select the state of dust, temperature and humidity to show at this display panel 31 respectively, be used for understanding ambient condition.
This cage 45 has a cover body 451, is arranged in an air admission hole 452 of these cover body 451 bottoms, tilts to be arranged in respectively the venthole 453 of these cover body 451 napexes, and this air admission hole 452 extends to a gas passage 454 of venthole 453 certainly.
This dust module 42 is to be used to transmit a voltage signal to this operating circuit 41, and have by this cage 45 and cover the substrate 421 established, be arranged on this substrate 421 and a heater element 422 of contiguous this air admission hole 452, be arranged at this gas passage 454 1 sides and can be, and be arranged at the opposite side of this gas passage 454 and can induce a light receiving element 424 of the glistening intensity in this gas passage 454 light emitting devices 423 of its illumination beam.
This heater element 422 is to adopt a power resistor at present embodiment, this light emitting devices 423 is to adopt a light emitting diode at present embodiment, this light receiving element 424 is to adopt a photodiode at present embodiment, can also can adopt photoresistance to replace along with luminance fluctuation continues to produce an electric signal.When this cage 45 is covered on the substrate 421 of this dust module 42, can hides this heater element 422, light emitting devices 423, light receiving element 424 backs and form darkrooms and cause the light evil to disturb to avoid extraneous light.
This operating circuit 41 has and stores this data message and as a microprocessor 411 of signal Processing.This data message comprises the value of electrical signals of a plurality of different sizes, and a plurality of and corresponding concentration value of value of electrical signals.This dust module 42, thermal module 43 can be handled and contrast to this microprocessor 411, reaches the voltage signal that humidity module 44 is transmitted.
This environment measurement device is as follows at the measurement mechanism of dust, this heater element 422 can produce a updraft because of heating, this updraft can draw extraneous air from second bleeder vent 27, this air admission hole 452, this venthole 453, and first circulation in regular turn in the bleeder vent 26, so just can make extraneous air inwardly flow into by the traction of this updraft, and in this darkroom by this gas passage 454, and this light emitting devices 423 can be with a light beam irradiates in this gas passage 454, this light receiving element 424 of process produces a current signal by the intensity of light reflection of dust again, and after converting this current signal to voltage output by this dust module 42, data through 411 pairs of these magnitudes of voltage of microprocessor and dust concentration compare computing, just can obtain dust concentration and show by this display panel 31.
Below further specify the embodiment of setting up this data message in this environment measurement device, originally this environment measurement device is setting up this data message when (as shown in Figure 5), be with among a high-precision environment measurement device is placed on the environment of various different cleanliness factors simultaneously, and cooperate its measurement result to set up this data message, what adopted in the present embodiment is this high-precision environment measurement device of machine conduct of the model KC-03A1 of Japanese trader RION company, this device can be at 0.3 μ m, 0.5 μ m, 1 μ m, 2 μ m, dust in the particle diameter sizes such as 5 μ m detects, and can show the measurement result of 0～3000pcs/liter concentration change, by the dust concentration that under same environment, is detected, this dust module 42 of environment measurement device of the present invention can produce the voltage of a corresponding size in output, repeat again under the environment of different dust concentrations, to measure, one side reads the concentration value of this high-precision environment measurement device, one side reads the voltage swing of dust module 42 of the present invention, just can in microprocessor 411 of the present invention, set up out the corresponding informance between voltage and dust concentration, so the measurement result by this high-precision environment measurement device of contrast is set up data message, just can also possess good accuracy in the actual use so that environment measurement of the present invention is contained in.
Conclude above-mentioned, the advantage of environment measurement device of the present invention has three, the first to be that the cost of this heater element 422 is lower, and can produce updraft and introduce air flow, so it is few that the electric weight that consumes also drives the pumping of bleeding, and do not have noise and produce and cause environmental interference.
The secondth, because the present invention counts each dust granules one by one without high precision, high reaction velocity and higher-priced laser diode and light receiving element 424, but reflect airborne clean level, so can adopt lower light emitting diode of price and photodiode to reach the detection effect with the glistening intensity of the whole dust in the gas passage 454.
The 3rd is after the environment measurement device of playscript with stage directions invention has been set up data message, just can continue to use this data message massive duplication in the microprocessor 411 of many environment measurement devices, and owing to be to cooperate this high-precision environment measurement device to set up data message, so except cost is low, also can provide good precision, therefore be fit to very much a large amount of the manufacturing, and be applied in the integrated mill, provide in a plurality of operating environments, the zone and use, so can reach the fundamental purpose of environment measurement device of the present invention really.
Claims (12)
1. an environment measurement device comprises the operating unit that a hollow housing unit, is arranged at this housing unit lateral surface, and a measuring unit that is electrically connected with this operating unit, it is characterized in that:
This housing unit comprises a upright operating surface, is a shell back side of opposite setting, a plurality of top at this shell back side and first bleeder vent that is connected with inside of being formed at this operating surface, and is second bleeder vent of opposite setting with this first bleeder vent;
This operating unit comprises a display panel; And
This measuring unit comprise be arranged in this housing unit and in have a data message and as an operating circuit of signal Processing, a dust module that is electrically connected with this operating circuit, and be covered on the cage on this dust module; This cage has a cover body, be arranged in this cover body bottom an air admission hole, be arranged in the venthole at this cover body top, and this air admission hole extends to a gas passage of this venthole certainly; This dust module has a substrate, is arranged on this substrate and a heater element of contiguous this air admission hole, and the light emitting devices and the light receiving element that are arranged at these substrate both sides respectively; This heater element can produce a updraft because of heating, this updraft can draw extraneous air circulation in regular turn in second bleeder vent, this air admission hole, this venthole and first bleeder vent, this light emitting devices be positioned at this gas passage a side and can be to its illumination beam, this light receiving element is in order to inducing the glistening intensity in this gas passage, and along with luminance fluctuation continues to produce an electric signal; This operating circuit has a microprocessor, can store this data message, this data message comprises the value of electrical signals of a plurality of different sizes, and a plurality of and the corresponding concentration value of value of electrical signals, the computing of electric signal that this light receiving element produced and this data message can being made comparisons of this microprocessor.
2. environment measurement device as claimed in claim 1 is characterized in that: this housing unit also comprise first room, with this first room second room separately, and be arranged at a dividing plate between this first, second room; This operating circuit is arranged in this first room, and this dust module is arranged in this second room.
3. environment measurement device as claimed in claim 2, it is characterized in that: this measuring unit also comprises and is arranged in this first room and a thermal module that is electrically connected with this operating circuit, and a humidity module that is arranged in this first room and is electrically connected with this operating circuit.
4. environment measurement device as claimed in claim 3 is characterized in that: this thermal module has a temperature detection device, and this humidity module has a humidity detecting element, and this dust, temperature, humidity module all can transmit a voltage signal to this operating circuit.
5. environment measurement device as claimed in claim 1 is characterized in that: this operating unit also comprises an operation keyboard that matches with this display panel.
6. environment measurement device as claimed in claim 5 is characterized in that: this operation keyboard has a power key, and a switch key.
7. environment measurement device as claimed in claim 1 is characterized in that: this heater element is a power resistor.
8. environment measurement device as claimed in claim 1 is characterized in that: this light emitting devices is a light emitting diode.
9. environment measurement device as claimed in claim 1 is characterized in that: this light receiving element is a photodiode.
10. environment measurement device as claimed in claim 1 is characterized in that: this light receiving element is a photoresistance.
11. an environment measurement device comprises one and isolates cover body, and is placed in a measuring unit of this isolation cover body inside; The bottom of this isolation cover body and top respectively are equipped with an air intake opening and at least one gas outlet, it is characterized in that:
This measuring unit comprises a heater element, a light emitting devices, a light receiving element, and an operating circuit;
This heater element is in order to adding hot-air and to produce one updraft, and this updraft is by entering in this isolation cover body in this air intake opening and by flowing out in this gas outlet;
This light emitting devices is launched a light beam to this updraft;
This light receiving element receives the intensity of this light beam and is converted to corresponding electric signal output; And
This operating circuit is to be electrically connected with this light receiving element, with receive this electric signal and with the computing of making comparisons of the interior data message that is built in this operating circuit, to learn airborne dust particle quantity.
12. environment measurement device as claimed in claim 11, it is characterized in that: this operating circuit has a microprocessor, can store this data message, this data message comprises the value of electrical signals of a plurality of different sizes, and a plurality of and the corresponding concentration value of value of electrical signals, this microprocessor is with the computing of making comparisons of electric signal that this light receiving element produced and this data message.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410048854 CN1707270B (en) | 2004-06-08 | 2004-06-08 | Environment measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410048854 CN1707270B (en) | 2004-06-08 | 2004-06-08 | Environment measuring apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1707270A CN1707270A (en) | 2005-12-14 |
| CN1707270B true CN1707270B (en) | 2010-10-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410048854 Expired - Fee Related CN1707270B (en) | 2004-06-08 | 2004-06-08 | Environment measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1707270B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE551761T1 (en) * | 2010-03-03 | 2012-04-15 | Axetris Ag | LASER DIODE CONSTRUCTION WITH REDUCED NOISE |
| CN103822862A (en) * | 2014-03-20 | 2014-05-28 | 苏州工业园区鸿基洁净科技有限公司 | Environment quality indicator |
| CN104142303B (en) * | 2014-08-06 | 2016-12-07 | 大连理工大学 | Dust induction apparatus |
| CN113758838A (en) * | 2020-06-03 | 2021-12-07 | 研能科技股份有限公司 | Gas detection device |
| TWI736309B (en) * | 2020-06-03 | 2021-08-11 | 研能科技股份有限公司 | Gas detection device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4099065A (en) * | 1976-10-12 | 1978-07-04 | Chloride, Incorporated | Smoke detector with chamber for producing eddy currents |
| US5760911A (en) * | 1994-04-22 | 1998-06-02 | Bha Group Holdings, Inc. | Continuous particulate emissions monitor calibrator |
| CN1186233A (en) * | 1996-12-25 | 1998-07-01 | 陈安世 | Automatic monitor for continuously discharging dust |
-
2004
- 2004-06-08 CN CN 200410048854 patent/CN1707270B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4099065A (en) * | 1976-10-12 | 1978-07-04 | Chloride, Incorporated | Smoke detector with chamber for producing eddy currents |
| US5760911A (en) * | 1994-04-22 | 1998-06-02 | Bha Group Holdings, Inc. | Continuous particulate emissions monitor calibrator |
| CN1186233A (en) * | 1996-12-25 | 1998-07-01 | 陈安世 | Automatic monitor for continuously discharging dust |
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| Publication number | Publication date |
|---|---|
| CN1707270A (en) | 2005-12-14 |
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Granted publication date: 20101006 Termination date: 20110608 |