CN107843691A - The control method of formaldehyde sensor module - Google Patents
The control method of formaldehyde sensor module Download PDFInfo
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- CN107843691A CN107843691A CN201710996768.2A CN201710996768A CN107843691A CN 107843691 A CN107843691 A CN 107843691A CN 201710996768 A CN201710996768 A CN 201710996768A CN 107843691 A CN107843691 A CN 107843691A
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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
- G01N33/0073—Control unit therefor
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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
- G01N33/007—Arrangements to check the analyser
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Abstract
The invention discloses a kind of control method of formaldehyde sensor module, formaldehyde sensor module includes：Housing, assembly cavity and test chamber are limited in housing, and test chamber has the detection mouth being connected with assembly cavity；Sensor, sensor are located in test chamber；Electric-controlled switch part, electric-controlled switch part are located in assembly cavity to open or close detection mouth；Control module, control module are located on housing and electrically connected respectively with electric-controlled switch part and sensor；Data interface connector, data interface connector are suitable to carry out data exchange between control module and external equipment；The control of formaldehyde sensor module comprises the following steps：Power-on self-test, record self-detection result；Enter armed state after self-detection result is successfully, the signal of scan data interface connector, operated according to the communication instruction that external equipment is passed on, recovered after the completion of operation to armed state.Control method according to embodiments of the present invention, advantageously ensure that the reliability of testing result.
Description
Technical field
The present invention relates to detection device technical field, more particularly to a kind of control method of formaldehyde sensor module.
Background technology
Being related to the device of air detection and processing can all detect equipped with air borne sensor to air, with the fortune of equipment
OK, the parameter such as the composition of air, humiture can change, and this change can be because occurring air, article and personnel with environment
Exchange and change, if some important parameters that can not detect air influence whether the performance of equipment, even threaten
The scope of activities and health degree of personnel inside to equipment institute observing and controlling regional space.In the space using the apparatus of air conditioning
Face, it is impossible to the deterioration of air quality can be caused by detecting specific gas content in air, so as to be difficult to take effective countermeasure, this meeting
Personnel health is damaged, or even threatens related personnel's life.
The content of the invention
The application is made based on discovery of the inventor to following facts and problem and understanding：
Conventional air detects can be divided into two major classes with processing unit according to air borne sensor is whether there is：One kind is no air sensing
The device of device, it can run power according to equipment operation duration, detection blower fan, detect into indirect modes such as outlet both sides pressure differences and estimate
The content for calculating gas flow, volume and specific gas composition adds up situation etc., is taken a breath, filtered, plus/minus by certain cycle
It is wet or switch dedusting, except specific devices such as formaldehyde.For these sides based on the appraising model such as equipment operation duration or flow
Case, although system architecture is simple, clear logic, cheap, and operation duration increases with specific gas content in air is accumulative
The degree positive correlation for adding deduct few, but because environmental factor, the difference of indirect detection parameter and error propagation chain are long, it is whole
Body systematic error is very big, thus such method testing result is very inaccurate, and it is undesirable to often lead to device systems operational efficiency.
Another kind of is the device for having air borne sensor, and it can need to introduce spy according to system specific gas detection of interest
Determine air borne sensor corresponding to gas phase, and corresponding measure can be taken according to the measurement result of air borne sensor.But this kind of dress
Put and particularly measure the electrochemical sensor of the gas such as formaldehyde and tend not to solve service life and convenience that installation is safeguarded is asked
Topic, it is undesirable to often lead to the control of system life-cycle operation expense.
It is contemplated that at least solves one of technical problem present in prior art.Therefore, the present invention proposes a kind of first
The control method of aldehyde sensor module, accuracy of detection can be improved and increased the service life.
The control method of formaldehyde sensor module according to embodiments of the present invention, the formaldehyde sensor module include：Shell
Body, assembly cavity and test chamber are limited in the housing, and the test chamber has the detection mouth being connected with the assembly cavity, institute
Assembly cavity is stated with the air stream port with ft connection；Sensor, the sensor are located in the test chamber；Electric-controlled switch
Part, the electric-controlled switch part are located in the assembly cavity to open or close the detection mouth；Control module, the control mould
Block is set to be electrically connected with the electric-controlled switch part and the sensor on the housing and respectively, to control the electric-controlled switch part
Action and receive the testing result of the sensor；Data interface connector, the data interface connector and the control
Molding block electrically connects, and the data interface connector is suitable to carry out data transmission between the control module and external equipment；
The control of the formaldehyde sensor module comprises the following steps：Power-on self-test, record self-detection result；After self-detection result is successfully
Into armed state, the signal of the data interface connector is scanned, is operated according to the communication instruction that external equipment is passed on,
Recover after the completion of operation to armed state.
The control method of formaldehyde sensor module according to embodiments of the present invention, the formaldehyde sensor module of use will sense
Device and electric-controlled switch part are encapsulated in enclosure interior, can reduce the damage probability of element, and extend formaldehyde sensor module uses the longevity
Life.Its control method performed when running, advantageously ensure that the reliability of testing result.
In certain embodiments, the electric-controlled switch part can just open the detection after being only successfully in self-detection result
Mouthful.
In certain embodiments, when the communication instruction meaning that external equipment is passed on is " inquiry concentration of formaldehyde ", the control
Module check self-detection result processed, the electric-controlled switch part is controlled to open the detection mouth after finding self-detection result and being successfully, so
Gather afterwards, record the concentration of formaldehyde value that the sensor is measured, the control module is by the data interface connector by spy
Determine communications protocol and send data to external equipment.
Specifically, when the communication instruction meaning that external equipment is passed on is " stopping concentration of formaldehyde detection ", the control mould
Block controls the electric-controlled switch part to close the detection mouth.
In certain embodiments, when the communication instruction that external equipment is passed on is " inquiry concentration of formaldehyde ", the control mould
Block checks self-detection result, and after self-detection result is found to fail, the signal of fail self-test is passed through the number by the control module
Transmitted according to interface connector to external equipment.
In certain embodiments, when the communication instruction that external equipment is passed on is " self-test again ", the formaldehyde sensor
Module performs power-on self-test program again, records self-detection result, and self-detection result is passed through the data-interface by the control module
Connector is transmitted to external equipment.
In certain embodiments, the housing includes：Base, the base include the control seat being connected and detection seat,
Control chamber is limited in the control seat, the control module is located in the control chamber, is limited in the detection seat described
Test chamber, the electric-controlled switch part are located on the base；Protecgulum, the protecgulum is detachably connected on the base, described
The assembly cavity is limited between protecgulum and the base, the detection seat is located in the assembly cavity.
Specifically, the control seat is opened wide to form signal wire opening, the detection in the side away from the detection seat
Seat forms the detection mouth in the side away from the signal wire opening, and the base also includes being connected on the control seat
Supporting plate, the electric-controlled switch part are located in the supporting plate, and the air stream port is located on the protecgulum；The housing is also
Including covering the cover plate in the signal wire opening.
In certain embodiments, the electric-controlled switch part includes：Switch member, the switch member are movably located at the dress
With intracavitary, the switch member has the open position for opening the detection mouth and the closed position for closing the detection mouth, described
Switch member is configured to a position activity in open position described in Chang Chaoxiang and the closed position；Driver, the driving
Device electrically connects with the control module, and the driver is used to drive the switch member towards the open position and the closing
Another position activity in position.
Specifically, the driver includes iron core and coil；The switch member includes：Magnetic section, the magnetic section are vertical
In the coil axial direction, the coil can attract the magnetic section in the case of energization；Tongue piece, described in the tongue piece
Tongue piece is directed away from the direction extension of the coil from the bending of one end of the magnetic section；Linkage section, the linkage section is from described
The other end bending of magnetic section extends towards the bottom direction close to the coil axle；Dynamic clamping head and quiet clamping head, the dynamic clamping head and quiet clamping head
It is configured to make the linkage section that there is the trend being close to towards the driver；Wherein：In the coil blackout, the connection
Section is close in the driver side wall, and the tongue piece is covered in the detection mouth；During the coil electricity described in absorption
Magnetic section is by adhesive, and the linkage section deviates the driver side wall, and the tongue piece opens the detection mouth.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 is a stereogram of the formaldehyde sensor module of the embodiment of the present invention.
Fig. 2 is another stereogram of the formaldehyde sensor module of the embodiment of the present invention.
Fig. 3 is the partial sectional view of the formaldehyde sensor module of the embodiment of the present invention.
Fig. 4 is the formaldehyde sensor module internal structure partial figure of the embodiment of the present invention.
Reference：
Formaldehyde sensor module 100,
Housing 1, base 13, data interface connector 131, control seat 132, detection seat 133, signal wire opening 134, support
Plate 135, card convex 136, convex edge 137, mounting hole 138, PCB daughter boards 139,
Assembly cavity 11, switch cavity 11a, control chamber 11b, test chamber 12, detection mouth 121,
Protecgulum 14, air stream port 141, hole clipping 142, cover plate 15, buckle structure 151,
Electric-controlled switch part 3, switch member 31, magnetic section 311, tongue piece 312, linkage section 313, dynamic clamping head and quiet clamping head 314, driver
32nd, iron core 321, coil 322, coil lead 323, magnetic conduction sheet 324, coil signal terminal 325,
Sensor 2, control module 4, sealing ring 5,
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
Formaldehyde sensor module 100 according to embodiments of the present invention is described below with reference to Fig. 1-Fig. 4.
As shown in Figure 1-Figure 3, formaldehyde sensor module 100 according to embodiments of the present invention, including：Housing 1, sensor 2,
Electric-controlled switch part 3, control module 4 and data reception portion.
Assembly cavity 11 and test chamber 12 are limited in housing 1, test chamber 12 has the detection mouth being connected with assembly cavity 11
121, assembly cavity 11 has the air stream port 141 with ft connection.Sensor 2 is located in test chamber 12.Electric-controlled switch part 3 is set
To open or close detection mouth 121 in the assembly cavity 11.Control module 4 be located on housing 1 and respectively with electric-controlled switch part 3 and
Sensor 2 electrically connects, with the testing result for controlling the action of electric-controlled switch part 3 and receiving sensor 2.Data interface connector
131 electrically connect with control module 4, and data interface connector 131 is suitable to carry out data biography between control module 4 and external equipment
It is defeated.
Specifically, control module 4 includes signal transacting and the pcb board of control, and it can be controlled by certain control mode
Inner space is closed with the conversion of open state.Control module 4 can include MCU (Microcontroller Unit, microcontroller list
Member) or SCM (Single Chip Microcomputer, one chip microcomputer), control module 4 may include that signal acquisition has
The repertoires such as AFE(analog front end), analog-to-digital conversion and the data communication of pass or partial function, control module 4 can include process circuit plate
Or other can provide similar functions.
It is understood that formaldehyde sensor module 100 is encapsulated in inside housing 1 so that formaldehyde sensor module 100
Install more convenient, and housing 1 serves protective effect to sensor 2 and control module 4, extends formaldehyde sensor module
100 service life.In addition, when electric-controlled switch part 3 is closed, test chamber 12 is closed, i.e., sensor 2 is in one
Individual closed space, external environment condition mutation can be so avoided to adverse effect caused by testing result, while further protection
Sensor 2, extend the service life of formaldehyde sensor module 100.
The control of formaldehyde sensor module 100 according to embodiments of the present invention comprises the following steps：
Step 1：Power-on self-test, record self-detection result；
Step 2：Enter armed state, the signal of scan data interface connector 131, root after self-detection result is successfully
The communication instruction passed on according to external equipment is operated, and is recovered after the completion of operation to armed state.
That is, after formaldehyde sensor module 100 is powered, the primary operations of formaldehyde sensor module 100 are to carry out certainly
Inspection, after only self-test is all gone well, formaldehyde sensor module 100, which can just await orders, carries out subsequent operation.The operation of this self-test, has
Oneself state is controlled comprehensively before operation beneficial to formaldehyde sensor module 100, ensures the reliability of subsequent operation.
Formaldehyde sensor module 100 according to embodiments of the present invention, sensor 2 and electric-controlled switch part 3 are encapsulated in housing 1
Inside, the damage probability of said elements can be reduced, extend the service life of formaldehyde sensor module 100.Simultaneously can by setting
The test chamber 12 of closing further extends formaldehyde sensor module 100 to improve the accuracy of detection of formaldehyde sensor module 100
Service life.The control method that formaldehyde sensor module 100 performs when running, advantageously ensure that the reliability of testing result.
Here, detection mouth 121 can be just opened after electric-controlled switch part 3 is only successfully in self-detection result, that is to say, that only
After formaldehyde sensor module 100 detects that oneself state is all gone well, sensor 2 could detect content of formaldehyde in extraneous air,
Ensure that the concentration of formaldehyde value that formaldehyde sensor module 100 outwards exports is accurate.
When the communication instruction meaning that external equipment is passed on is " inquiry concentration of formaldehyde ", control module checks self-detection result,
Control electric-controlled switch part to open detection mouth after finding self-detection result and being successfully, then gather, record the formaldehyde that sensor is measured
Concentration value, control module send data to external equipment, and root by data interface connector 131 according to particular communication agreement
According to relevant agreement, coherent signal is updated.So, it is ensured that the concentration of formaldehyde value that external equipment receives is that preparation is errorless.
When the communication instruction that external equipment is passed on be " inquiry concentration of formaldehyde ", control module inspection self-detection result, when looking into
After going out self-detection result for failure, the signal of fail self-test is transmitted to outside and set by control module by data interface connector 131
It is standby, and according to relevant agreement, update coherent signal.So, after external equipment does not receive concentration of formaldehyde value, can learn immediately is
Caused by the fail self-test of formaldehyde sensor module 100, rather than self reason causes, and is advantageous to external equipment and understands retrieval original
Cause.
When the communication instruction that external equipment is passed on is " stopping concentration of formaldehyde detection ", control module control electric-controlled switch part
Close detection mouth.
When the communication instruction that external equipment is passed on is " self-test again ", formaldehyde sensor module performs power-on self-test again
Program, record self-detection result, update working condition, control module by self-detection result by data interface connector 131 transmit to
External equipment.
In certain embodiments, as depicted in figs. 1 and 2, housing 1 includes base 13 and protecgulum 14.Wherein, as shown in figure 3,
Base 13 includes the control seat 132 being connected and detection seat 133, controls in seat 132 and limits control chamber 11b, control module 4 is set
In control chamber 11b, detect in seat 133 and limit test chamber 12, sensor 2 is located in test chamber 12.Electric-controlled switch part 3 is located at
On base 13.Protecgulum 14 is detachably connected on base 13, and assembly cavity 11 is limited between protecgulum 14 and base 13, detects seat
133 in assembly cavity 11.
This structure, electric-controlled switch part 3 and control module 4 are enclosed in the inside different cavity of housing 1, can it is convenient for assembly,
Change, maintenance gets up also to be very easy to.
Alternatively, protecgulum 14 can be fixed on base 13 by buckle or screw.In Fig. 1, base 13 is provided with card convex
136, protecgulum 14 is provided with the hole clipping 142 being engaged with card convex 136.
Specifically, as shown in figure 3, control seat 132 is opened wide to form signal wire opening in the side away from detection seat 133
134, detection seat 133 forms detection mouth 121 in the side away from signal wire opening 134.Housing 1 also includes covering opening in signal wire
Cover plate 15 at mouth 134, cover plate 15 are alternatively referred to as PCB cover plates.The setting signal line opening 134 on control seat 132, control module
4 in the control chamber 11b, and the setting of cover plate 15 can be easy to open control chamber 11b, so as to facilitate the detection of control module 4 and
Safeguard.
Alternatively, fixed pcb board 4 is aided in after PCB daughter boards 139 weld with pcb board 4 on base 13.
Alternatively, as shown in Fig. 2 cover plate 15 can be fixed on base 13 by buckle structure 151 or screw.
More specifically, base 13 also includes the supporting plate 135 being connected on control seat 132, electric-controlled switch part 3 is located at support
On plate 135, air stream port 141 is located on protecgulum 14.Supporting plate 135 extends forward equivalent to the bottom wall of control seat 132 to be formed,
Electric-controlled switch part 3 is located in supporting plate 135, and protecgulum 14 is connected with supporting plate 135.So, the control of electric-controlled switch part 3 is got up
It is very easy to.
Alternatively, air stream port 141 is air-inlet grille, and air-inlet grille is located on the roof of protecgulum 14.
In certain embodiments, as depicted in figs. 1 and 2, housing 1 is provided with the data-interface electrically connected with control module 4
131, data-interface 131 is used for formaldehyde sensor module 100 and the connection of other equipment.
Specifically, data interface connector 131 is set on housing 1, can possess and carry out signal exchange with extraneous.Data connect
Mouth 131 includes male (male) or female (female) row's needle socket (socket connector)；By in data interface connector
131 insertions with the connection cables of interface are applicable, can complete formaldehyde sensor module 100 and circuit other parts electrical connection and
Data exchange.
Data interface connector 131 can also be not provided with certain housing 1, installs wireless signal hair additional in control module 4
Injection device, the connection of formaldehyde sensor module 100 and other equipment is realized by way of wireless connection.
That is, data interface connector 131 in the embodiment of the present invention, can transmission signal in a wired fashion, also may be used
With wirelessly transmission signal, it is not restricted here.
It is understood that the structure of housing 1 can carry out necessary increase and decrease or change, data-interface connection as needed
The position that device 131 is set is not limited to position shown in the present embodiment Fig. 1, but will necessarily include fixed structure, air stream port
The structures such as 141.Specifically, sensor 2 is fixed on base 13 by modes such as snapping, riveting, bonding or screws.
In certain embodiments, sensor 2 is gas sensor, and specifically, sensor 2 is used to detect in tested air
The concentration of formaldehyde.In certain embodiment of the present invention, the species for the material more emat sensor 2 that can also be detected as needed.
In certain embodiments, as shown in figure 3, electric-controlled switch part 3 includes switch member 31 and driver 32, switch member 31 can
Actively it is located in assembly cavity 11, switch member 31 has the open position for opening detection mouth 121 and the closing for closing detection mouth 121
Position, switch member 31 are configured to a position activity in Chang Chaoxiang open positions and closed position.Opened it should be noted that working as
Outside air can enter test chamber 12 by air stream port 141, detection mouth 121 when pass part 31 is in an open position；When opening
When pass part 31 is in the closed position, test chamber 12 is confined space.Driver 32 is electrically connected with control module 4, and driver 32 is used
It is movable towards another position in open position and closed position in driving switch part 31.Detection mouth is switched by automatically controlled
121, switch control can be made to realize automation.
Electric-controlled switch part 3 is alternatively referred to as state converter, i.e. the detection state of formaldehyde sensor module 100 and non-detection
The conversion of state is realized by the action of electric-controlled switch part 3.
Specifically, as shown in figure 3, switch member 31 is provided with the sealing ring 5 for sealing detection mouth 121, in detection mouth 121
Set sealing ring 5 can strengthen switch member 31 it is in the closed position when test chamber 12 obturation effect.
Specifically, as shown in figure 3, driver 32 includes iron core 321 and coil 322.This is equivalent to utilize electromagnetic principle
Carry out controlling switch part 31, this control mode is very easy to.
Specifically, as shown in figure 3, magnetic section 311, tongue piece 312, linkage section 313 and dynamic clamping head and quiet clamping head 314.Magnetic section 311
Perpendicular to the axial direction of coil 322, coil 322 can attract magnetic section 311, tongue piece 312 from magnetic in the case of energization
One end bending of section 311 is directed away from the direction extension of coil 322.Linkage section 313 bends direction from the other end of magnetic section 311
Extend close to the bottom direction of coil axle.Dynamic clamping head and quiet clamping head 314 is configured to make linkage section 312 have what is towards driver 32 be close to
Trend.Here, magnetic section 311 and linkage section 313 can be into regarding L-shaped iron core as, and L-shaped iron core is connected as a body with tongue piece 312,
Whole switch member 31 is bent into Z-shaped plate equivalent to by one piece of iron plate.
Wherein, when coil 322 powers off, tongue piece 312 is covered in detection mouth 121, and magnetic section is adsorbed when coil 322 is powered
311 so that tongue piece 312 opens detection mouth 121.So switch member 31 can utilize electromagnetic attraction, make tongue piece 312 that fine motion occur, so as to
Detection mouth 121 is opened or closed to control tongue piece 312.
It is understood that when coil 322 is powered, hot-wire coil 322 produces magnetic field and holds magnetic section 311, magnetic
Section 311 drives tongue piece 312 to move, and it is opened detection mouth 121；When coil 322 powers off, magnetic field disappears, the resilience of magnetic section 311
Drive tongue piece 312 to move, it is closed detection mouth 121, with linkage section 313, magnetic section 311, magnetic conduction sheet when tongue piece 312 moves
324 junction surfaces are rotary shaft, and dynamic clamping head and quiet clamping head 314 provides the power fixed required for the axle, while dynamic clamping head and quiet clamping head 314 can be with
In 322 no power of coil, tongue piece 312 closes detection mouth 121 in driving and provides power.Specifically, when coil 322 is powered,
Magnetic section 311 drives tongue piece 312 and linkage section 313 to move, and now dynamic clamping head and quiet clamping head 314 deforms upon storage elastic potential energy, when
During 322 no power of coil, dynamic clamping head and quiet clamping head 314 is returned to origin-location by linkage section 313 is stored, and is achieved in tongue piece and closes inspection
Survey the function of mouth 121.
Alternatively, dynamic clamping head and quiet clamping head 314 can be that making leaf spring can also be resilience component.
Alternatively, as shown in figure 3, the support of coil 322 is provided with coil lead 323 and coil signal terminal 325.
In addition, as shown in figure 3, electric-controlled switch part 3 by snap assembled on fixed support plate 135, supporting plate be provided with peace
Hole 138 is filled, during application, can be fixed by mounting hole 138 with buckle or screw fixed form fixes sensor module 100
Onto other components.
The formaldehyde sensor module 100 of one embodiment of the invention is described referring to Fig. 1-Fig. 3.
As shown in figure 3, the formaldehyde sensor module 100 in the present embodiment includes：Housing 1, formaldehyde sensor, electric-controlled switch
Part 3 and control module 4.
As Figure 1-Figure 2, housing 1 includes base 13, protecgulum 14 and cover plate 15, and protecgulum 14 is covered in the front side of base 13,
And switch cavity 11a is limited with base 13, cover plate 15 is fastened on the rear side of base 13, and limits control chamber 11b with base 13.
Protecgulum 14 is provided with the air stream port 141 for being used for being connected with external environment, and base 13 is provided with for sensor 2 and other
The data interface connector 131 of equipment connection.
In the description of the invention, it is to be understood that the orientation or position of the instruction such as term "front", "rear", " on ", " under "
It is based on orientation shown in the drawings or position relationship to put relation, is for only for ease of the description present invention and simplifies description, rather than
Indicate or imply that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore can not
It is interpreted as limitation of the present invention.
As shown in figure 3, base 13 is provided with convex edge 137, formaldehyde sensor is located in base 3, and formaldehyde sensor is arranged on
On convex edge 137.
Formaldehyde sensor has shell and detecting element, wherein, shell coordinates with convex edge 137 limits test chamber 12, outside
Detection mouth 121 is provided with front side of shell, detecting element is encapsulated in test chamber 12.Formaldehyde sensor is assemblied in the front end face of base 13
On.The step of installing formaldehyde sensor is that formaldehyde sensor is positioned on convex edge 137 first, then is fixed by buckle structure
On convex edge 137.
As shown in figure 3, electric-controlled switch part 3 is located in switch cavity 11a, and including switch member 31 and driver 32.Switch member
31 are movably located in switch cavity 11a, and switch member 31 has the open position for opening detection mouth 121 and closes detection mouth 121
Closed position, switch member 31 be configured to Chang Chaoxiang closed positions activity.Driver 32 electrically connects with control module 4, driver
32 are used for driving switch part 31 towards another position activity in open position and closed position.
As shown in figure 3, as shown in figure 3, switching on and shutting down 31 include magnetic section 311, tongue piece 312, linkage section 313, elastic reset
Part 314 and sealing ring 5.Perpendicular to the axial direction of coil 322, coil 322 can attract magnetic section 311 in the case of energization
Magnetic section 311, tongue piece 312 are directed away from the direction extension of coil 322 from the bending of one end of magnetic section 311.Linkage section 313 is from magnetic
The other end bending for inhaling section 311 extends towards the bottom direction close to coil axle.Dynamic clamping head and quiet clamping head 314 is configured to make linkage section
312 have the trend being close to towards driver 32.
Wherein, when coil 322 powers off, tongue piece 312 is covered in detection mouth 121, and magnetic section is adsorbed when coil 322 is powered
311 so that tongue piece 312 opens detection mouth 121.Sealing ring 5 is provided with tongue piece 312, and matching somebody with somebody positioned at tongue piece 312 and detection mouth 121
At conjunction, for sealing detection chamber 12.
As shown in figure 3, driver 32 includes coil 322 and iron core 321, iron core 321 is vertically arranged, and coil 322 is wrapped in
On iron core 321.Driver 32 is located in switch cavity 11a, and is coordinated in supporting plate 135, and is existed with control module 4 and be electrically connected
Connect.
As shown in figure 3, control module 4 is located in control chamber 11b, and coordinate on the rear end face of base 13.Control module 4
The PCB daughter boards 139 for being used for being connected with formaldehyde sensor are provided with, so as to realize that formaldehyde sensor and the data of control module 4 pass
Transmission function.
In this embodiment, the Parameters design of the electric-controlled switch part 3 of formaldehyde sensor module 100 is as follows：
As shown in Figure 3 and Figure 4, electric-controlled switch part 3 is completed in closed-open transfer process of closed object, sealing ring 5 and line
Relative position relation between circle 322 and detection mouth 121 is according to Fig. 4, because tongue piece 312 and sealing ring 5 fit together,
The maximum b of its a ° of angle and distal end relative displacement between detection mouth 121 is respectively between sealing ring 5 and detection mouth 121
Angle and distal end relative displacement maximum it is substantially equivalent；Similarly magnetic section 311 (in the surface part of iron core 321) and iron
For angle between core 321 also with a ° of equivalence, the relative position maximum between magnetic section 311 and iron core 321 is b '.B ', b, magnetic
Inhale the length L ' of section 311, meet formula one with the relation such as the center line of sealing ring 5 and the lower end distance L of tongue piece 312：
Tan (α °)=b/L=b '/L ', (formula one)
Thus according to formula one, a ° of the design parameter controlled, b, b are needed when can obtain design ', L, L ' and determine this
The basic skills of a little parameters：
Step 1：Motion and each component geometry size according to required for being changed closed object completion status, determine b model
Enclose and consider the correlation of a ° of L and corresponding angle accordingly, so as to obtain one group under the restriction of closed object and inner space
The b more optimized, L, a °；
Step 2：B, L are obtained according to step 1, a °, further consider iron core 321, coil 322, magnetic section 311 and tongue
The factors such as the position relationship when combination and motion of piece 312, synthesis obtains L ', so as to obtain all design parameters；
Step 3：Repeat all of the above or part steps, the outward appearance of further Optimal Parameters and formaldehyde sensor module 100
The matching degree of the factors such as size, installation requirement, so as to obtain whole design parameters of formaldehyde sensor module 100.
In one particular embodiment of the present invention, the formaldehyde sensor signal transacting of formaldehyde sensor module 100 and control
Algorithm processed comprises the following steps：
Step 1：Power-on self-test, if fail self-test, fail self-test signal, and misregistration information are provided, is passed if necessary
Give other circuits communicated with formaldehyde sensor module 100；Self-test is by rear, according to self-detection result and relevant agreement, renewal
Working condition, into armed state and standby is provided, and subsequently or simultaneously start to retouch data interface connector 131 and accordingly believe
Number, retrieve the communication instruction M from other circuits；
Step 2：Table sort is pressed respectively according to instruction meaning to be handled：
Step 3：After command M has been handled, armed state is returned.
The embodiment of the invention discloses the structure of formaldehyde sensor module 100, and the control of the formaldehyde sensor module
With application method, the formaldehyde sensor module 100 is applied to all types of air detections and processing equipment, with family expenses, office space
And use based on the application of the fields such as the Large-Scale Equipment of the apparatus of air conditioning, communal facility, more particularly to need to detect in air
Specific gas content and the apparatus of air conditioning using this information as other controlling organization action references, including aerial temperature and humidity are adjusted
Regulating device, air cleaning, purifier, fresh air, air feed system etc..
In the description of this specification, the description of reference term " embodiment ", " example " etc. mean to combine the embodiment or
Specific features, structure, material or the feature of example description are contained at least one embodiment or example of the present invention.At this
In specification, identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.Moreover, description is specific
Feature, structure, material or feature can combine in an appropriate manner in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (10)
1. a kind of control method of formaldehyde sensor module, it is characterised in that the formaldehyde sensor module includes：
Housing, assembly cavity and test chamber are limited in the housing, and the test chamber has the inspection being connected with the assembly cavity
Mouth is surveyed, the assembly cavity has the air stream port with ft connection；
Sensor, the sensor are located in the test chamber；
Electric-controlled switch part, the electric-controlled switch part are located in the assembly cavity to open or close the detection mouth；
Control module, the control module is set to be electrically connected with the electric-controlled switch part and the sensor on the housing and respectively
Connect, with the testing result for controlling the action of the electric-controlled switch part and receiving the sensor；
Data interface connector, the data interface connector electrically connect with the control module, the data interface connector
Suitable for carrying out data transmission between the control module and external equipment；
The control of the formaldehyde sensor module comprises the following steps：
Power-on self-test, record self-detection result；
Enter armed state after self-detection result is successfully, the signal of the data interface connector is scanned, according to external equipment
The communication instruction of reception and registration is operated, and is recovered after the completion of operation to armed state.
2. the control method of formaldehyde sensor module according to claim 1, it is characterised in that the electric-controlled switch part is only
Have be successfully in self-detection result after can just open the detection mouth.
3. the control method of formaldehyde sensor module according to claim 1, it is characterised in that passed on when external equipment
When communication instruction meaning is " inquiry concentration of formaldehyde ", the control module checks self-detection result, is successfully when finding self-detection result
After control the electric-controlled switch part to open the detection mouth, then gather, record the concentration of formaldehyde value that the sensor is measured, institute
State control module and external equipment is sent data to by particular communication agreement by the data interface connector.
4. the control method of formaldehyde sensor module according to claim 2, it is characterised in that passed on when external equipment
When communication instruction meaning is " stopping concentration of formaldehyde detection ", the control module controls the electric-controlled switch part to close the detection
Mouthful.
5. the control method of formaldehyde sensor module according to claim 1, it is characterised in that passed on when external equipment
When communication instruction is " inquiry concentration of formaldehyde ", the control module checks self-detection result, after self-detection result is found to fail, institute
Control module is stated to transmit the signal of fail self-test to external equipment by the data interface connector.
6. the control method of formaldehyde sensor module according to claim 1, it is characterised in that passed on when external equipment
When communication instruction is " self-test again ", the formaldehyde sensor module performs power-on self-test program again, records self-detection result, institute
Control module is stated to transmit self-detection result to external equipment by the data interface connector.
7. the control method of formaldehyde sensor module according to claim 1, it is characterised in that the housing includes：
Base, the base include the control seat being connected and detection seat, control chamber, the control are limited in the control seat
Module is located in the control chamber, limits the test chamber in the detection seat, the electric-controlled switch part is located at the base
On；
Protecgulum, the protecgulum are detachably connected on the base, and the assembling is limited between the protecgulum and the base
Chamber, the detection seat are located in the assembly cavity.
8. the control method of formaldehyde sensor module according to claim 7, it is characterised in that the control seat is remote
The side of the detection seat is opened wide to form signal wire opening, and the detection seat is formed in the side away from the signal wire opening
The detection mouth, the base also include the supporting plate being connected on the control seat, and the electric-controlled switch part is located at the branch
On fagging, the air stream port is located on the protecgulum；The housing also includes covering the lid in the signal wire opening
Plate.
9. the control method of the formaldehyde sensor module according to any one of claim 1-8, it is characterised in that the electricity
Control switch member includes：
Switch member, the switch member are movably located in the assembly cavity, and the switch member, which has, opens the detection mouth
Open position and the closed position for closing the detection mouth, the switch member are configured to open position described in Chang Chaoxiang and the pass
A position activity in closed position；
Driver, the driver electrically connect with the control module, and the driver is used to drive the switch member towards institute
State another position activity in open position and the closed position.
10. the control method of formaldehyde sensor module according to claim 9, it is characterised in that the driver includes
Iron core and coil；
The switch member includes：
Magnetic section, the magnetic section can attract institute perpendicular to the coil axial direction, the coil in the case of energization
State magnetic section；
Tongue piece, tongue piece described in the tongue piece are directed away from the direction extension of the coil from the bending of one end of the magnetic section；
Linkage section, the linkage section prolong from the other end bending direction of the magnetic section close to the bottom direction of the coil axle
Stretch；
Dynamic clamping head and quiet clamping head, the dynamic clamping head and quiet clamping head are configured to make the linkage section have the trend being close to towards the driver；
Wherein：In the coil blackout, the linkage section is close in the driver side wall, and the tongue piece is covered in institute
State in detection mouth；The magnetic section is adsorbed during the coil electricity by adhesive, and the linkage section deviates the driver side wall,
The tongue piece opens the detection mouth.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710996768.2A CN107843691B (en) | 2017-10-19 | 2017-10-19 | Control method of formaldehyde sensor module |
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|---|---|---|---|
| CN201710996768.2A CN107843691B (en) | 2017-10-19 | 2017-10-19 | Control method of formaldehyde sensor module |
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| CN114814091A (en) * | 2022-04-08 | 2022-07-29 | 天津光电华典科技有限公司 | Atmospheric gaseous pollutant detection method and device and electronic equipment |
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