CN106442873B - A kind of sensor switching mechanism of VOC monitor - Google Patents
A kind of sensor switching mechanism of VOC monitor Download PDFInfo
- Publication number
- CN106442873B CN106442873B CN201610743867.5A CN201610743867A CN106442873B CN 106442873 B CN106442873 B CN 106442873B CN 201610743867 A CN201610743867 A CN 201610743867A CN 106442873 B CN106442873 B CN 106442873B
- Authority
- CN
- China
- Prior art keywords
- sensor
- baffle
- pid
- servo motor
- transmission mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
Abstract
The present invention relates to a kind of sensor switching mechanisms of VOC monitor, belong to atmosphere environment supervision technical field, the switching mechanism is for the switching between sensor in information acquisition system, the information acquisition system includes PID sensor and cmos sensor, switching mechanism includes servo motor, transmission mechanism and baffle, servo motor power output end is connected with transmission mechanism power intake, transmission mechanism power output end is fixedly connected with baffle, baffle is formed in the reciprocating device of PID sensor information collection end slide outside by the power supply of servo motor and transmission mechanism, routine monitoring is carried out using cmos sensor, when monitoring to stablize pollutant component, it switches to PID sensor and carries out high precision monitor, it is positioned in handoff procedure by the signal transmission of optocoupler, obtain monitoring number According to rear, baffle blocks PID sensor information collection end, and PID sensor is standby, and cmos sensor works, and PID can keep long service life under high-precision state.
Description
Technical field
The invention belongs to atmosphere environment supervision technical fields, and in particular to a kind of sensor switching machine of VOC monitor
Structure.
Background technique
VOC monitor is common equipment in atmosphere environment supervision, for continuously measuring having in dangerous or industrial environment
Malicious nocuousness organic gas is often used PID sensor to carry out the acquisition of atmospheric information, due to danger in existing VOC monitor
Or often containing particulate matter or sticky contaminant in the poisonous and harmful organic gas of industrial environment, the collection terminal of PID sensor can be by
Accuracy is caused to be gradually reduced in these substances of absorption, service life needs to frequently replace PID biography generally at two months or so
Sensor just can guarantee measurement accuracy, and during replacement, monitoring cannot continue to carry out, and therefore, it is necessary to utilize other sensors
It is monitored in the case where being unsuitable for using PID sensor, this requires design a kind of sensor switching mechanism.
Summary of the invention
The present invention overcomes the deficiencies in the prior art, provide a kind of sensor switching mechanism of VOC monitor, this is cut
PID sensor and cmos sensor can be carried out the switching of working condition and off working state by structure of changing planes, so that PID sensor
Can stop working under severe conditions, substitution work is carried out by cmos sensor, can either guarantee monitoring it is normal into
Row, and it is able to extend the service life of PID sensor.
The specific technical solution of the present invention is:
A kind of sensor switching mechanism of VOC monitor, the switching mechanism for sensor in information acquisition system it
Between switching, key point is, information acquisition system includes the PID sensor and cmos sensor of setting on a mounting board, switching
Mechanism includes servo motor, transmission mechanism and baffle, and servo motor power output end is connected with transmission mechanism power intake, is passed
Motivation structure power output end is fixedly connected with baffle, and baffle is formed in PID by the power supply of servo motor and transmission mechanism
The reciprocating device of sensor information collection terminal slide outside.
The transmission mechanism is worm drive, is equipped with thread bush, servo motor on the power output shaft of servo motor
Power output shaft and thread bush between for screw thread rotation cooperate, thread bush outer end is fixedly connected with baffle.
The 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 end are connected with controller signals input terminal, the signal output end of controller
It is connected with servo motor, PID sensor and cmos sensor.
The beneficial effects of the present invention are: the present invention uses the baffle of slip shape outside PID sensor information collection end
At reciprocating device, when needing PID sensor to carry out high precision monitor, baffle is moved to PID by servo motor and senses
Beside device information collection end, baffle does not block PID sensor, and when needing to protect PID sensor, baffle is moved to PID sensing
Device information collection end is blocked, the sticky particle object that the filter membrane at information collection end can be excessive to avoid adherency, working life
It can significantly improve, cmos sensor substitution PID sensor is monitored work, and cmos sensor works the longevity under severe conditions
Life is longer, although its monitoring accuracy is not so good as PID sensor, it is only monitored, and whether there is or not stable pollutants to be detected,
Therefore its precision does not have larger impact for testing result obtained, and its precision can carry out school by PID sensor
Standard, the sensor switching mechanism structure is simple, is capable of the information collection end of effective protection PID sensor, the use of PID sensor
Service life is significantly extended.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is the bottom view of Fig. 1.
Fig. 3 is the structural schematic diagram of transmission mechanism in the present invention.
Fig. 4 is the control principle drawing of controller in the present invention.
Fig. 5 is the structural schematic diagram of light information collecting mechanism in the present invention.
In attached drawing, 1, PID sensor, 2, cmos sensor, 3, servo motor, 4, baffle, 5 thread bush, 6, controller, 7,
Optocoupler, 8, conversion circuit plate, the 9, first block, the 10, second block, 11, mounting plate.
Specific embodiment
The present invention relates to a kind of sensor switching mechanism of VOC monitor, which is used for information acquisition system
Switching between middle sensor, the information acquisition system include that the PID sensor 1 being arranged on mounting plate 11 and CMOS are passed
Sensor 2, switching mechanism include servo motor 3, transmission mechanism and baffle 4,3 power output end of servo motor and transmission mechanism power
Input terminal is connected, and transmission mechanism power output end is fixedly connected with baffle 4, and baffle 4 is moved by servo motor 3 and transmission mechanism
Power supplies the reciprocating device for being formed in 1 information collection end slide outside of PID sensor.
Specific embodiment, as shown in Figures 1 to 5, transmission mechanism is worm drive, on the power output shaft of servo motor 3
Thread bush 5 is installed, between the power output shaft and thread bush 5 of servo motor 3 for screw thread rotation cooperate, 5 outer end of thread bush with
Baffle 4 is fixedly connected, and when servo motor 3 rotates, thread bush 5 is moved along its output end axial direction, servo motor 3
Moving forward and backward for thread bush 5 can be realized in positive and negative rotation, so that the reciprocating movement of thread bush 5 is formed, it can be in PID sensor
It is moved back and forth outside 1 information collection end, PID sensor 1 is switched in working condition and standby mode, is sensed in PID
Substitution work is carried out by cmos sensor 2 under 1 standby mode of device, under Conventional Time, cmos sensor 2 is in running order,
It detects when having stable pollutant in air, needs 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, PID sensor 1 obtain monitoring data after, controller control
Baffle 4 is moved to 1 information collection end of PID sensor position and is blocked by servo motor 3 processed, at this point, by cmos sensor 2
It is monitored work, has anti-pollution, the resistance to high-strength characteristic used, can steadily be monitored work, meanwhile, PID
Sensor 1 and cmos sensor 2 combine, and can use cmos sensor 2 and solve influence of the humidity to PID sensor 1.
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, 8 signal output end of conversion circuit plate and controller in conversion circuit plate 8
6 signal input parts are connected, and the signal output end of controller 6 is connected with servo motor 3, PID sensor 1 and cmos sensor 2, should
The purpose of light information collecting mechanism setting is for the shift position of automatic control baffle 4, when the prison that cmos sensor 2 obtains
When measured data is shown in air containing stable pollutant, controller 6 sends signal to servo motor 3, and servo motor 3 starts,
It is by transmission mechanism that baffle 4 is mobile to the direction far from 1 information collection end of PID sensor, the second baffle to 4 lower end of baffle
10 when blocking optocoupler 7, and optocoupler 7 sends signal to controller 6 by photoelectric signal transformation circuit, and controller 6 controls servo electricity
Machine 3 shuts down, at this point, baffle 4 does not block outside 1 signal acquisition terminal of PID sensor, PID sensor 1 starts to carry out air
The work of monitoring, meanwhile, the monitoring data of PID sensor 1 can calibrate cmos sensor 2；When PID sensor 1 obtains
After accurate monitoring data must be stablized, need to stop the work of PID sensor 1, while working using cmos sensor 2,
It is instructed at this point, controller 6 is sent to servo motor 3, the reversion of servo motor 3 simultaneously adopts baffle 4 to close to 1 information of PID sensor
The direction for collecting end is mobile, and when the first block 9 when 4 lower end of baffle blocks optocoupler 7, optocoupler 7 passes through photoelectric signal transformation circuit
Signal is sent to controller 6, controller 6 controls servo motor 3 and shuts down, at this point, baffle 4 is by 1 information collection of PID sensor
End is blocked, and PID sensor 1 stops working, and the filter membrane at information collection end can be protected, to effectively extend PID biography
The service life of sensor 1, VOC content can be realized high precision monitor in atmosphere, in entire information acquisition system operational process,
It can guarantee the lasting progress of VOC monitoring, and can be realized detection accuracy to greatest extent, while service life is longer,
Technical support is also provided for prolonged continuous monitoring.
Claims (3)
1. a kind of sensor switching mechanism of VOC monitor, the switching mechanism is between sensor in information acquisition system
Switching, the information acquisition system includes that PID sensor (1) and cmos sensor (2) on mounting plate (11) is arranged,
It is characterized by: the switching mechanism includes servo motor (3), transmission mechanism and baffle (4), servo motor (3) power is defeated
Outlet is connected with transmission mechanism power intake, and transmission mechanism power output end is fixedly connected with baffle (4), baffle (4) by
The power supply of servo motor (3) and transmission mechanism is formed in the reciprocating movement of PID sensor (1) information collection end slide outside
Mechanism.
2. a kind of sensor switching mechanism of VOC monitor according to claim 1, it is characterised in that: the biography
Motivation structure is worm drive, is equipped with thread bush (5) on the power output shaft of servo motor (3), the power of servo motor (3) is defeated
Cooperate between shaft and thread bush (5) for screw thread rotation, thread bush (5) outer end is fixedly connected with baffle (4).
3. a kind of sensor switching mechanism of VOC monitor according to claim 1, it is characterised in that: described cuts
Structure of changing planes 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 end are connected with controller (6) signal input part, the signal output of controller (6)
End is connected with servo motor (3), PID sensor (1) and cmos sensor (2)；
The optocoupler (7), PID sensor (1) are successively set on mounting plate (11) along the direction of advance of baffle (4), and light
The height of coupling (7) is lower than the height of PID sensor (1), its direction of advance of the baffle (4) lower end edge, which is disposed with, to be used for
The first block (9), the second baffle (10) of optocoupler (7) are blocked, when second baffle (10) blocks optocoupler (7), baffle (4) does not have
It blocks outside PID sensor (1) signal acquisition terminal, when the first block (9) blocks optocoupler (7), baffle (4) passes PID
It blocks at sensor (1) information collection end.
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106442873A CN106442873A (en) | 2017-02-22 |
| CN106442873B true CN106442873B (en) | 2019-05-03 |
Family
ID=58182657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610743867.5A Active CN106442873B (en) | 2016-08-29 | 2016-08-29 | A kind of sensor switching mechanism of VOC monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106442873B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201915639D0 (en) * | 2019-10-29 | 2019-12-11 | P E S Tech Limited | A sensor |
| CN113049756B (en) * | 2021-03-30 | 2022-05-13 | 铜陵安德科铭电子材料科技有限公司 | 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 |
Citations (4)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011075545A (en) * | 2009-09-01 | 2011-04-14 | Horiba Ltd | Gas sensor |
-
2016
- 2016-08-29 CN CN201610743867.5A patent/CN106442873B/en active Active
Patent Citations (4)
| 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106442873A (en) | 2017-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106442873B (en) | A kind of sensor switching mechanism of VOC monitor | |
| CN103365248A (en) | Numerical controller | |
| CN102706780A (en) | Instrument for monitoring small particulate matters in air | |
| CN202793976U (en) | Multi-cutter dust on-line monitoring system | |
| CN101508035B (en) | Break monitoring method and system of machine-shaping device | |
| CN104458355A (en) | Flue-gas movable type sampling system and sampling method | |
| CN202854036U (en) | Carbon monoxide concentration on-line detection device | |
| CN105043826B (en) | A kind of intelligent constant-temperature multichannel atmospheric sampling method | |
| CN103149335B (en) | Aquatic volatile organic contaminant sample pretreatment (VOC) system | |
| CN204269503U (en) | A kind of straight-line transmitting ejector half unburned carbon in flue dust measurement mechanism | |
| CN201974322U (en) | Active-type online gas-monitoring device | |
| CN105448201A (en) | LED displaying and monitoring screen system for painting workshop environment quality | |
| CN205379748U (en) | Automatic dustproof clearance system | |
| CN210532090U (en) | Nitric oxide detector with remote monitoring function | |
| CN109194737A (en) | A kind of Architectural Engineering Environment monitoring system | |
| CN205102342U (en) | Machine cabinet air -conditioner with oneself protect function | |
| CN211877909U (en) | Fixed combustible gas alarm | |
| CN209388140U (en) | A kind of controller | |
| CN205844247U (en) | A kind of intelligent exhaust gas components detecting system | |
| CN113267436A (en) | Fine particulate matter self-calibration detection system and calibration method thereof | |
| CN205027723U (en) | Air contaminant check out test set | |
| CN204270133U (en) | A kind of desulphurization denitration adjuvant intelligent detection device | |
| CN201417251Y (en) | Infrared gas analyzer | |
| CN212586066U (en) | Smoke and dust flue gas sampling check out test set of overvoltage protection | |
| CN219160046U (en) | Three-proofing photoelectric methane acetylene detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |