CN106442873A - Sensor switching mechanism for VOC monitor - Google Patents
Sensor switching mechanism for VOC monitor Download PDFInfo
- Publication number
- CN106442873A CN106442873A CN201610743867.5A CN201610743867A CN106442873A CN 106442873 A CN106442873 A CN 106442873A CN 201610743867 A CN201610743867 A CN 201610743867A CN 106442873 A CN106442873 A CN 106442873A
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- sensor
- pid
- servomotor
- transmission mechanism
- switching mechanism
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
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- Combustion & Propulsion (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Sampling And Sample Adjustment (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention relates to a sensor switching mechanism for a VOC monitor, and belongs to the technical field of atmospheric environmental monitoring. The switching mechanism is used for switching sensors in an information collection system, the information collection system comprises the PID sensor and the CMOS sensor, and the switching mechanism comprises a servo motor, a transmission mechanism and a baffle; the power output end of the servo motor is connected with the power input end of the transmission mechanism, the power output end of the transmission mechanism is fixedly connected with the baffle, the baffle supplies power of the servo motor and the transmission mechanism to a sliding reciprocating movement mechanism arranged outside the information collection end of the PID sensor, and conventional monitoring is conducted by means of the CMOS sensor. When stable pollution ingredients are monitored, the sensor is switched to the PID sensor for high-precision monitoring, and positioning is conducted through signal transmission of an optocoupler in the switching process; after monitoring data is acquired, the baffle shields the information collection end of the PID sensor, the PID sensor is in a standby state, the CMOS sensor works, and the PID can keep long service life in a high-precision state.
Description
Technical field
The invention belongs to atmosphere environment supervision technical field, be specifically related to the sensor switching machine of a kind of VOC monitor
Structure.
Background technology
VOC monitor is equipment conventional in atmosphere environment supervision, for having in continuous measurement danger or industrial environment
The harmful organic gas of poison, often uses PID sensor to carry out the collection of atmospheric information, due to danger in existing VOC monitor
Or the poisonous and harmful organic gas of industrial environment often contains particulate matter or sticky contaminant, the collection terminal of PID sensor can be by
Causing accuracy to be gradually reduced in these materials of absorption, service life, typically at about two months, needs frequently to change PID and passes
Sensor guarantee certainty of measurement, during changing, monitoring cannot persistently be carried out, accordingly, it would be desirable to utilize other sensor
Being monitored in the case of being unsuitable for and use PID sensor, this requires to design a kind of sensor switching mechanism.
Content of the invention
Instant invention overcomes the deficiencies in the prior art, provide the sensor switching mechanism of a kind of VOC monitor, this is cut
PID sensor and cmos sensor can be operated the switching of state and off working state by converting mechanism so that PID sensor
Can quit work under severe conditions, be carried out substituting work by cmos sensor, normally entering of monitoring can either be ensured
OK, the service life of PID sensor can be extended again.
The concrete technical scheme of the present invention is：
A kind of sensor switching mechanism of VOC monitor, this switching mechanism for sensor in information acquisition system it
Between switching, key point is, information acquisition system includes arranging PID sensor on a mounting board and cmos sensor, switching
Mechanism includes servomotor, transmission mechanism and baffle plate, and servomotor clutch end is connected with transmission mechanism power intake, passes
Motivation structure clutch end is fixing with baffle plate to be connected, and baffle plate is formed at PID by the power supply of servomotor and transmission mechanism
The reciprocating device of sensor information collection terminal slide outside.
Described transmission mechanism is worm drive, and the power output shaft of servomotor is provided with thread bush, servomotor
Power output shaft and thread bush between coordinate for screw thread rotation, thread bush outer end and baffle plate are fixing to be connected.
Described switching mechanism is additionally provided with controller and light information collecting mechanism, and light information collecting mechanism includes light
Coupling and conversion circuit plate, conversion circuit partitioned signal output is connected with controller signals input, the signal output part of controller
It is connected with servomotor, PID sensor and cmos sensor.
The invention has the beneficial effects as follows：The present invention uses the baffle plate of slip in the outside shape of PID sensor information gathering end
Becoming reciprocating device, when needs PID sensor carries out high precision monitor, baffle plate moves to PID sensing by servomotor
Device information gathering end side, baffle plate does not block PID sensor, and when needs protection PID sensor, baffle plate moves to PID sensing
Device information gathering end blocks, and the filter membrane of its information gathering end can be avoided adhering to too much sticky particle thing, working life
Can significantly improve, cmos sensor substitutes PID sensor and is monitored work, and cmos sensor works the longevity under severe conditions
Order longer, although its monitoring accuracy is not so good as PID sensor, but its simply monitoring have or not stable pollutant and need to detect,
Therefore its precision does not has considerable influence for the testing result being obtained, and its precision can carry out school by PID sensor
Standard, this sensor switching mechanism simple in construction, can effectively protect the information gathering end of PID sensor, the use of PID sensor
Life-span is significantly extended.
Brief description
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the upward view of Fig. 1.
Fig. 3 is the structural representation of transmission mechanism in the present invention.
Fig. 4 is the control principle drawing of middle controller of the present invention.
Fig. 5 is the structural representation of light information collecting mechanism in the present invention.
In accompanying drawing, the 1st, PID sensor, the 2nd, cmos sensor, the 3rd, servomotor, the 4th, baffle plate, 5 thread bush, the 6th, controller, the 7th,
Optocoupler, the 8th, conversion circuit plate, the 9th, the first block, the 10th, the second block, the 11st, installing plate.
Detailed description of the invention
The present invention relates to the sensor switching mechanism of a kind of VOC monitor, this switching mechanism is used for information acquisition system
Switching between middle sensor, described information acquisition system includes that the PID sensor 1 and CMOS being arranged on installing plate 11 passes
Sensor 2, switching mechanism includes servomotor the 3rd, transmission mechanism and baffle plate 4, servomotor 3 clutch end and transmission mechanism power
Input is connected, and transmission mechanism clutch end and baffle plate 4 is fixing to be connected, and baffle plate 4 moves by servomotor 3 and transmission mechanism
Power supply is formed at the reciprocating device of PID sensor 1 information gathering end slide outside.
Specific embodiment, as shown in Figures 1 to 5, transmission mechanism is worm drive, on the power output shaft of servomotor 3
Thread bush 5 is installed, coordinates for screw thread rotation between the power output shaft of servomotor 3 with thread bush 5, thread bush 5 outer end with
Baffle plate 4 is fixing to be connected, and when its servomotor 3 rotates, thread bush 5 moves along its output axial direction, servomotor 3
Rotating can realize moving forward and backward of thread bush 5, thus forms moving back and forth of thread bush 5, and it can be at PID sensor
Moving back and forth outside 1 information gathering end, PID sensor 1 switches over holding state in working order, in PID sensing
Being carried out substituting work by cmos sensor 2 under device 1 holding state, under Conventional Time, cmos sensor 2 is in running order, its
Detect when air has stable pollutant, need to open PID sensor 1 and carry out high precision monitor, meanwhile, PID sensor 1
Monitoring result the precision of cmos sensor 2 can also be calibrated, after PID sensor 1 obtains Monitoring Data, controller control
Servomotor 3 processed moves baffle plate 4 to PID sensor 1 information gathering end position and is blocked, now, by cmos sensor 2
Being monitored work, it possesses anti-pollution, the high-strength characteristic of resistance to use, can stably be monitored work, meanwhile, PID
Sensor 1 and cmos sensor 2 combine, it is possible to use cmos sensor 2 solves the impact on PID sensor 1 for the humidity.
Switching mechanism is additionally provided with controller 6 and light information collecting mechanism, light information collecting mechanism include optocoupler 7 and
Conversion circuit plate 8, is provided with photoelectric signal transformation circuit, conversion circuit plate 8 signal output part and controller in conversion circuit plate 8
6 signal input parts are connected, and the signal output part of controller 6 is connected with servomotor the 3rd, PID sensor 1 and cmos sensor 2, should
The purpose that light information collecting mechanism is arranged is for the shift position of automatic control baffle 4, when the prison that cmos sensor 2 obtains
When containing stable pollutant in survey data display air, controller 6 sends signal to servomotor 3, and servomotor 3 starts,
By transmission mechanism, baffle plate 4 is moved to the direction away from PID sensor 1 information gathering end, treat the second baffle of baffle plate 4 lower end
10 when blocking optocoupler 7, and optocoupler 7 sends signal by photoelectric signal transformation circuit to controller 6, and controller 6 controls servo electricity
Machine 3 shuts down, and now, baffle plate 4 does not block outside PID sensor 1 signals collecting end, and PID sensor 1 proceeds by air
The work of monitoring, meanwhile, cmos sensor 2 can be calibrated by the Monitoring Data of PID sensor 1；When PID sensor 1 obtains
After must stablizing accurate Monitoring Data, need to stop the work of PID sensor 1, use cmos sensor 2 to be operated simultaneously,
Now, controller 6 sends instruction to servomotor 3, and servomotor 3 inverts and adopts baffle plate 4 near PID sensor 1 information
The direction of collection end is moved, and when optocoupler 7 is blocked by the first block 9 of baffle plate 4 lower end, optocoupler 7 passes through photoelectric signal transformation circuit
Sending signal to controller 6, controller 6 controls servomotor 3 and shuts down, and now, baffle plate 4 is by PID sensor 1 information gathering
End blocks, and PID sensor 1 quits work, and the filter membrane of its information gathering end can be protected, thus effectively extends PID and pass
In the service life of sensor 1, in air, VOC content is capable of high precision monitor, in whole information acquisition system running,
Ensure that what VOC monitored is persistently carried out, and be capable of detecting to greatest extent accuracy, service life is longer simultaneously,
Also provide technical support for monitoring continuously for a long time.
Claims (3)
1. a sensor switching mechanism for VOC monitor, this switching mechanism for sensor in information acquisition system between
Switching, described information acquisition system includes PID sensor (1) and the cmos sensor (2) being arranged on installing plate (11),
It is characterized in that：Described switching mechanism includes servomotor (3), transmission mechanism and baffle plate (4), and servomotor (3) power is defeated
Going out end to be connected with transmission mechanism power intake, transmission mechanism clutch end and baffle plate (4) are fixed and are connected, baffle plate (4) by
The power supply of servomotor (3) and transmission mechanism is formed at moving back and forth of PID sensor (1) information gathering end slide outside
Mechanism.
2. the sensor switching mechanism of a kind of VOC monitor according to claim 1, it is characterised in that：Described biography
Motivation structure is worm drive, and the power output shaft of servomotor (3) is provided with thread bush (5), and the power of servomotor (3) is defeated
Coordinating for screw thread rotation between shaft with thread bush (5), thread bush (5) outer end is fixing with baffle plate (4) to be connected.
3. the sensor switching mechanism of a kind of VOC monitor according to claim 1, it is characterised in that：Described cuts
Converting mechanism is additionally provided with controller (6) and light information collecting mechanism, and light information collecting mechanism includes optocoupler (7) and conversion electricity
Road plate (8), conversion circuit plate (8) signal output part is connected with controller (6) signal input part, the signal output of controller (6)
End is connected with servomotor (3), PID sensor (1) and cmos sensor (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610743867.5A CN106442873B (en) | 2016-08-29 | 2016-08-29 | A kind of sensor switching mechanism of VOC monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610743867.5A CN106442873B (en) | 2016-08-29 | 2016-08-29 | A kind of sensor switching mechanism of VOC monitor |
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| Publication Number | Publication Date |
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| CN106442873A true CN106442873A (en) | 2017-02-22 |
| CN106442873B CN106442873B (en) | 2019-05-03 |
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| CN201610743867.5A Active CN106442873B (en) | 2016-08-29 | 2016-08-29 | A kind of sensor switching mechanism of VOC monitor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049756A (en) * | 2021-03-30 | 2021-06-29 | 黄沃辉 | Microelectronic gas analysis system and method based on chip and intelligent manufacturing |
| CN114729920A (en) * | 2019-10-29 | 2022-07-08 | P.E.S.科技有限公司 | Analysis system for volatile organic compounds in soil |
| CN115394067A (en) * | 2022-10-28 | 2022-11-25 | 山东嘉源检测技术股份有限公司 | Water environment data early warning system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4222145A1 (en) * | 1992-07-06 | 1994-01-13 | Rump Elektronik Tech | Ozone detection in air or process gas for low concn. determn. - by periodically switching sensor feedline to line contg. ozone filter and utilising semiconductor sensor element for continuous ozone detection by resistance modification |
| US20110048108A1 (en) * | 2009-09-01 | 2011-03-03 | Yutaka Yamagishi | Gas sensor |
| CN103337275A (en) * | 2013-06-21 | 2013-10-02 | 东软飞利浦医疗设备系统有限责任公司 | CT scanner filter switching device and switching method |
| CN105486811A (en) * | 2015-12-22 | 2016-04-13 | 东南大学 | Device and method for testing rapid response characteristic of gas sensor |
| CN105486819A (en) * | 2015-12-15 | 2016-04-13 | 东北大学 | Movable indoor air quality detector and use method thereof |
-
2016
- 2016-08-29 CN CN201610743867.5A patent/CN106442873B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4222145A1 (en) * | 1992-07-06 | 1994-01-13 | Rump Elektronik Tech | Ozone detection in air or process gas for low concn. determn. - by periodically switching sensor feedline to line contg. ozone filter and utilising semiconductor sensor element for continuous ozone detection by resistance modification |
| US20110048108A1 (en) * | 2009-09-01 | 2011-03-03 | Yutaka Yamagishi | Gas sensor |
| CN103337275A (en) * | 2013-06-21 | 2013-10-02 | 东软飞利浦医疗设备系统有限责任公司 | CT scanner filter switching device and switching method |
| CN105486819A (en) * | 2015-12-15 | 2016-04-13 | 东北大学 | Movable indoor air quality detector and use method thereof |
| CN105486811A (en) * | 2015-12-22 | 2016-04-13 | 东南大学 | Device and method for testing rapid response characteristic of gas sensor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114729920A (en) * | 2019-10-29 | 2022-07-08 | P.E.S.科技有限公司 | Analysis system for volatile organic compounds in soil |
| CN113049756A (en) * | 2021-03-30 | 2021-06-29 | 黄沃辉 | Microelectronic gas analysis system and method based on chip and intelligent manufacturing |
| CN115394067A (en) * | 2022-10-28 | 2022-11-25 | 山东嘉源检测技术股份有限公司 | Water environment data early warning system |
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| CN106442873B (en) | 2019-05-03 |
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