CN109099953B - Anti-mismeasuring humidity sensor - Google Patents
Anti-mismeasuring humidity sensor Download PDFInfo
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- CN109099953B CN109099953B CN201810721196.1A CN201810721196A CN109099953B CN 109099953 B CN109099953 B CN 109099953B CN 201810721196 A CN201810721196 A CN 201810721196A CN 109099953 B CN109099953 B CN 109099953B
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- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
Abstract
The invention belongs to the technical field of sensors, and particularly relates to an anti-misdetection humidity sensor which comprises a sensor main body, a probe, a humidity sensing area, an upper shell, a driving module, a lower shell, a front-section air blowing module, a rear-section air blowing module and a bottom plate, wherein the front-section air blowing module comprises a cylinder sleeve, a piston plate, a spring and a trundle; the rear section air blowing module is used for continuously blowing the water drops blown down by the front section air blowing module downwards; according to the invention, the ball screw drives the cylinder sleeve and the piston plate to move downwards together, the trundles at one end of the piston plate move downwards along the inclined inner wall of the lower shell, so that the piston plate is pushed to extrude air in the cylinder sleeve from the air outlet hole at the bottom end of the cylinder sleeve, the extruded compressed air is blown to the surface of the probe, and then the hanging water on the surface of the probe is blown to the lower end and then blown downwards by the rear-section air blowing module until the hanging water drops; finally, the hanging water on the probe and the humidity sensing area is cleared, and the phenomenon that the humidity sensor is misdetected due to the hanging water is prevented.
Description
Technical Field
The invention belongs to the technical field of sensors, and particularly relates to an anti-misoperation humidity sensor.
Background
In some places with requirements on humidity, a humidity sensor is often required to be arranged, and corresponding control is performed through a humidity signal acquired by the humidity sensor. However, in some places with high humidity, the probe of the humidity sensor is easy to hang water, once the water is hung, the humidity sensor judges that the humidity of the site is 100%, and actually the humidity does not reach 100%, even if the humidity is reduced, the probe still hangs water, the humidity detected and displayed by the humidity sensor of the hanging water is still 100%, so that the error detection of the humidity occurs, and the significance for the original purpose of carrying out related control according to the humidity is lost. Therefore, the technical problem to be solved at present is how to provide a humidity sensor capable of preventing misdetection and preventing the humidity sensor from misdetecting humidity due to water hanging.
Some technical scheme who prevents mistake and survey humidity transducer have also appeared among the prior art, have disclosed a humidity transducer prevents mistake and have surveyed device like chinese patent with application number 201310028284.0, overlap around humidity transducer and establish an air jacket, one end is equipped with the air inlet of being connected with the air supply on the air jacket, the air jacket other end is equipped with the gas outlet, is equipped with the passageway that makes gas flow out after the gas outlet blow to the humidity transducer probe between air inlet and the gas outlet. When the humidity measured by the humidity sensor is 100%, the air source can be started to blow air to the probe through the channel, if the air is caused by water hanging, the air can evaporate water vapor after the air is blown, and finally the humidity value measured by the humidity sensor meets the actual condition, so that the misdetection of the humidity caused by the water hanging can be avoided.
The technical scheme can blow off the hanging water on the surface of the probe by compressed air, and has simple structure; however, only a fixed air outlet blows air to the surface of the probe, so that the blowing area is limited, and if the length of the probe is too long, the hanging water on the surface of the probe cannot be directly blown down; the air flow is stable, so that the effect of blowing hanging water on the surface of the probe is general.
Disclosure of Invention
In order to make up the defects of the prior art, the anti-misdetection humidity sensor provided by the invention has the advantages that the cylinder sleeve and the piston plate are driven to move downwards together through the ball screw, the trundles at one end of the piston plate move downwards along the inclined inner wall of the lower shell, the piston plate is further pushed to extrude the air of the cylinder sleeve out of the air outlet hole at the bottom end of the cylinder sleeve, the extruded compressed air is blown to the surface of the probe, and then the hanging water on the surface of the probe is blown to the lower end and is blown downwards by the rear-section blowing module until the hanging water falls off; finally, the hanging water on the probe and the humidity sensing area is cleared, and the phenomenon that the humidity sensor is misdetected due to the hanging water is prevented.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a mis-measurement-preventing humidity sensor which comprises a sensor main body, a probe, a humidity sensing area, an upper shell, a driving module, a lower shell, a front-section blowing module, a rear-section blowing module and a bottom plate, wherein one end of the probe is fixedly connected to the end surface of the bottom end of the sensor main body; the cylindrical surface at one end of the probe is fixedly connected with one end of the upper shell, and the other end of the probe is fixedly connected with one end of the humidity sensing area; the other end of the upper shell is fixedly connected with one end of the lower shell, and a driving module is arranged in the upper shell; the other end of the lower shell is fixedly connected with the end face of one end of the bottom plate, one end in the lower shell is provided with a front-section air blowing module, and the other end in the lower shell is provided with a rear-section air blowing module; the driving module comprises a motor, a fixing plate, a driving gear, a driven gear, a synchronous belt and a ball screw, the motor is fixedly connected in a mounting hole at one end of the fixing plate, and the end part of a motor shaft is fixedly connected at one end of the driving gear; the other end of the fixed plate is fixedly connected to the inner wall of the upper shell; the driving gear is meshed with the driven gear; the mounting hole of the driven gear is fixedly connected with the middle cylindrical surface of the ball screw; the ball screws are uniformly arranged in the circumferential direction, one end of each ball screw is rotatably arranged in the mounting hole in one end of the upper shell, the other end of each ball screw is rotatably arranged in the mounting hole in the bottom plate, and adjacent ball screws are connected through a synchronous belt to realize linkage; the front-section air blowing module comprises a cylinder sleeve, a piston plate, a spring and a trundle, wherein the cylinder sleeve is rectangular, two sides of one end of the cylinder sleeve are connected with a ball screw through a ball screw nut pair, one end of the piston plate is connected with the other end of the cylinder sleeve in a sliding mode, and the spring is arranged between the bottom end of a cavity of the cylinder sleeve and the end face of one end of the piston plate; the other end of the piston plate is provided with a caster; the caster wheel rolls along the inclined inner wall at one end of the lower shell; the lower end of the front section air blowing module is provided with a rear section air blowing module; the rear section air blowing module is used for continuously blowing the water drops blown down by the front section air blowing module downwards; when the device works, the motor drives one of the ball screws to rotate through the gear, and then the ball screws are connected through the synchronous belt to realize linkage of the ball screws, the ball screws drive the cylinder sleeve to move downwards through the ball screw nut pair, the cylinder sleeve drives the piston plate to move downwards together, when the trundles at one end of the piston plate move downwards along the inclined inner wall of the lower shell, the piston plate moves transversely, the piston plate extrudes the spring in the cylinder sleeve, meanwhile, the piston plate extrudes air of the cylinder sleeve from the air outlet hole at the bottom end of the cylinder sleeve, the extruded compressed air is blown to the surface of the probe, so that hanging water on the surface of the probe is blown to the lower end, and then is blown downwards by the rear-section; finally, the hanging water on the probe and the humidity sensing area is cleared, and the phenomenon that the humidity sensor is misdetected due to the hanging water is prevented.
As a preferable scheme of the invention, an air blowing nozzle is fixedly connected to the arc surface at one end of the cylinder sleeve; the air blowing nozzle is arc-shaped, and air blowing holes in the air blowing nozzle are obliquely arranged; during operation, the piston plate extrudes the air of the cylinder sleeve from the air outlet hole at the bottom end of the cylinder sleeve, the extruded compressed air is blown to the cylindrical surface of the probe after passing through the inclined air blowing hole in the air blowing nozzle, and the compressed air blown downwards in an inclined mode can more effectively blow away hanging water on the probe downwards.
As a preferable scheme of the present invention, a group of V-shaped grooves is uniformly formed on the inclined inner wall of one end of the lower housing; when the probe is in work, when the trundles at one end of the piston plate move downwards along the inclined inner wall of the lower shell, the idler wheels on the trundles roll on the surface with the V-shaped grooves, the trundles are pushed to move quickly and slowly, the pressure of gas blown out from the blowing nozzle at the bottom end of the cylinder sleeve is small and large, and the hanging water on the probe is blown downwards more easily by the air flow which is small and large.
As a preferred scheme of the invention, the rear-section air blowing module comprises a corrugated air cushion, the corrugated air cushion is in a circular arc shape, a group of corrugated air cushions can be spliced into a circular ring, a partition plate is arranged between each layer of the corrugated air cushion, and an air outlet hole which is inclined downwards is arranged on the corrugated surface at the inner side of the corrugated air cushion; during operation, ball passes through the vice cylinder liner that drives of ball nut and moves down, and the truckle of piston board one end moves the following back of the inner wall of casing slope down, and the cylinder liner bottom surface begins to extrude the top surface on the ripple air cushion, and the compression of ripple air cushion blows to the humidity induction zone in the air outlet hole of ripple air cushion inboard after the air in the ripple air cushion is compressed, and then realizes blowing downwards and catch up with the hanging water on humidity induction zone surface.
As a first preferable scheme of the rear-section blowing module, a plurality of stages of telescopic rods are arranged in the corrugated air cushion, and each layer of partition plate of the corrugated air cushion from top to bottom is respectively penetrated through by each stage of cylinder body of the plurality of stages of telescopic rods from small to large; the top end of the multi-stage telescopic rod is fixedly connected with the top of the cavity of the corrugated air cushion, and the bottom end of the multi-stage telescopic rod penetrates through the bottom end of the corrugated air cushion and then is fixedly connected in a mounting hole of the bottom plate; the during operation, ball passes through the vice cylinder liner that drives of ball nut and moves down, top surface on the cylinder liner bottom surface extrusion ripple air cushion, multistage telescopic link from the top down segmentation is compressed in proper order, and then realize that ripple air cushion from the top down each layer is compressed in proper order, from the top down blows off compressed gas in proper order in the inboard gas outlet of ripple air cushion, thereby realize that the hanging water on humidity induction zone surface is blown from the top down and is caught up with the water droplet, blow the effect of catching up with down better.
As a second preferred scheme of the rear-section air blowing module, a group of springs are arranged between every two layers of partition plates in the corrugated air cushion, and braking strips are fixedly connected to corrugated bulges on the outer side of the corrugated air cushion; the brake strip is a round strip; a group of first semicircular grooves are formed in the cylindrical surface of the other end of the lower shell, and the first semicircular grooves are formed in the position, close to the brake strips, of the cylindrical surface of the lower shell; during operation, ball passes through the vice cylinder liner that drives of ball nut and moves down, and the top surface on the cylinder liner bottom surface extrusion ripple air cushion, and the cylinder liner promotes the braking strip through the ripple air cushion and crosses a semicircular groove, and then realizes that every layer of ripple air cushion is compressed in proper order from the top down to realize that the hanging water on humidity induction zone surface is blown from the top down and is driven down.
As a preferable scheme of the invention, a second semicircular groove is further arranged between every two adjacent first semicircular grooves on the cylindrical surface of the lower shell; during operation, the cylinder liner promotes the brake strip through the ripple air cushion and crosses a semicircular groove, and then the brake strip on the ripple air cushion gets into semicircular groove No. two again, and there is the pause and frustrates and feel when realizing that the ripple air cushion is compressed, and then big time is little during the air current that the ripple air cushion venthole blew off, and the air current that big time is little blows the hanging water on humidity induction zone surface downwards more easily and drives.
As a third preferred scheme of the rear-section air blowing module, a braking strip is fixedly connected to a corrugated bulge at the outer side of the corrugated air cushion; a rectangular groove is formed in the cylindrical surface of the other end of the lower shell, and one end of the swinging block is hinged to the end face of the bottom end of the rectangular groove; a torsional spring is arranged at the hinged position of one end of the swinging block, and the middle part of the upper end of the swinging block is hinged with one end of the movable plate; the step surface at one end of the movable plate is contacted with the step surface at the other end of the swinging block; when the device works, the ball screw drives the cylinder sleeve to move downwards through the ball screw nut pair, the bottom surface of the cylinder sleeve extrudes the upper surface of the corrugated air cushion, the braking strips on the corrugated air cushion extrude the other end of the movable plate, the braking strips drive the swinging blocks to swing by overcoming the elasticity of the torsional springs at one ends of the swinging blocks, and then each layer of the corrugated air cushion is sequentially compressed from top to bottom, so that the hanging water on the surface of the humidity sensing area is blown down from top to bottom; after the ball screw drives the cylinder sleeve to move upwards, the corrugated air cushion expands again under the elastic force of a spring in the corrugated air cushion, the brake strip on the corrugated air cushion extrudes the other end of the movable plate, the movable plate swings around the hinged part of the other end until the movable plate is separated from the brake strip, and the step surface on the movable plate is attached to the step surface on the swing block again.
The invention has the following beneficial effects:
1. according to the invention, the ball screw drives the cylinder sleeve and the piston plate to move downwards together, the trundles at one end of the piston plate move downwards along the inclined inner wall of the lower shell, so that the piston plate is pushed to extrude air in the cylinder sleeve from the air outlet hole at the bottom end of the cylinder sleeve, the extruded compressed air is blown to the surface of the probe, and then the hanging water on the surface of the probe is blown to the lower end and then blown downwards by the rear-section air blowing module until the hanging water drops; finally, the hanging water on the probe and the humidity sensing area is cleared, and the phenomenon that the humidity sensor is misdetected due to the hanging water is prevented.
2. According to the invention, the inclined inner wall at one end of the lower shell is uniformly provided with the group of V-shaped grooves, the trundles at one end of the piston plate move downwards along the inclined inner wall of the lower shell, the rollers on the trundles roll on the surface with the V-shaped grooves to push the piston plate to move quickly and slowly, so that the pressure of gas blown out from the blowing nozzles at the bottom end of the cylinder sleeve is large and small, and the hanging water on the probe is more easily blown downwards by the large and small gas flow.
3. According to the invention, the multistage telescopic rods are arranged in the corrugated air cushion, so that when the bottom surface of the cylinder sleeve extrudes the upper top surface of the corrugated air cushion, the multistage telescopic rods in the cylinder sleeve are sequentially compressed from top to bottom in a segmented mode, further, each layer of the corrugated air cushion is sequentially compressed from top to bottom, compressed air is sequentially blown out from top to bottom in the air outlet holes in the inner side of the corrugated air cushion, and therefore, the hanging water on the surface of the humidity sensing area is blown off from top to bottom, and is blown off from top to bottom to catch up water drops, and the blowing-off effect is better.
4. According to the invention, the braking strips are fixedly connected to the corrugated bulges at the outer sides of the corrugated air cushions, so that when the bottom surface of the cylinder sleeve extrudes the upper top surface of the corrugated air cushion, the cylinder sleeve pushes the braking strips to sequentially cross each semicircular groove from top to bottom through the corrugated air cushion, and further, each layer of the corrugated air cushion is sequentially compressed from top to bottom, so that the hanging water on the surface of the humidity sensing area is blown down from top to bottom.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a front view of the rear blowing module according to the present invention;
FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;
FIG. 3 is an enlarged view of the rear blowing module shown at B in FIG. 1;
FIG. 4 is an enlarged view of the rear blowing module shown at B in FIG. 1;
FIG. 5 is an enlarged view at C in FIG. 4;
in the figure: the device comprises a sensor body 1, a probe 2, a humidity sensing area 3, an upper shell 4, a driving module 5, a motor 51, a fixing plate 52, a driving gear 53, a driven gear 54, a synchronous belt 55, a ball screw 56, a lower shell 6, a V-shaped groove 61, a first semicircular groove 62, a second semicircular groove 63, a rectangular groove 64, a front section air blowing module 7, a cylinder sleeve 71, an air blowing nozzle 711, a piston plate 72, a caster 73, a rear section air blowing module 8, a corrugated air cushion 81, a partition plate 811, a multi-stage telescopic rod 82, a brake strip 83, a swing block 84, a movable plate 85 and a bottom plate 9.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 5, the anti-misdetection humidity sensor of the present invention includes a sensor main body 1, a probe 2, a humidity sensing area 3, an upper housing 4, a driving module 5, a lower housing 6, a front blowing module 7, a rear blowing module 8, and a bottom plate 9, wherein one end of the probe 2 is fixedly connected to an end surface of a bottom end of the sensor main body 1; the cylindrical surface at one end of the probe 2 is fixedly connected with one end of the upper shell 4, and the other end of the probe 2 is fixedly connected with one end of the humidity sensing area 3; the other end of the upper shell 4 is fixedly connected with one end of the lower shell 6, and a driving module 5 is arranged in the upper shell 4; the other end of the lower shell 6 is fixedly connected with the end face of one end of the bottom plate 9, a front-section air blowing module 7 is arranged at one end in the lower shell 6, and a rear-section air blowing module 8 is arranged at the other end in the lower shell 6; the driving module 5 comprises a motor 51, a fixing plate 52, a driving gear 53, a driven gear 54, a synchronous belt 55 and a ball screw 56, wherein the motor 51 is fixedly connected in a mounting hole at one end of the fixing plate 52, and the end part of the shaft of the motor 51 is fixedly connected at one end of the driving gear 53; the other end of the fixing plate 52 is fixedly connected to the inner wall of the upper shell 4; the driving gear 53 is meshed with the driven gear 54; the mounting hole of the driven gear 54 is fixedly connected with the middle cylindrical surface of the ball screw 56; the ball screws 56 are uniformly arranged in the circumferential direction, one end of each ball screw 56 is rotatably arranged in a mounting hole at one end of the upper shell 4, the other end of each ball screw 56 is rotatably arranged in a mounting hole on the bottom plate 9, and adjacent ball screws 56 are connected through a synchronous belt 55 to realize linkage; the front-section air blowing module 7 comprises a cylinder sleeve 71, a piston plate 72, a spring and a caster 73, wherein the cylinder sleeve 71 is rectangular, two sides of one end of the cylinder sleeve 71 are connected with a ball screw 56 through a ball screw nut pair, one end of the piston plate 72 is connected with the other end of the cylinder sleeve 71 in a cavity in a sliding manner, and the spring is arranged between the bottom end of the cavity of the cylinder sleeve 71 and the end surface of one end of the piston plate 72; the other end of the piston plate 72 is provided with a caster 73; the caster 73 rolls along the inclined inner wall of one end of the lower housing 6; the lower end of the front section blowing module 7 is provided with a rear section blowing module 8; the rear-section blowing module 8 is used for continuously blowing the water drops blown down by the front-section blowing module 7 downwards; when the device works, the motor 51 drives one of the ball screws 56 to rotate through a gear, and then the ball screws 56 are connected through the synchronous belt 55 to realize linkage of the ball screws 56, the ball screws 56 drive the cylinder sleeve 71 to move downwards through the ball screw nut pair, the cylinder sleeve 71 drives the piston plate 72 to move downwards together, the caster 73 at one end of the piston plate 72 moves downwards along the inclined inner wall of the lower shell 6, the piston plate 72 moves transversely, the piston plate 72 extrudes a spring in the cylinder sleeve 71, meanwhile, the piston plate 72 extrudes air in the cylinder sleeve 71 from an air outlet hole at the bottom end of the cylinder sleeve 71, and the extruded compressed air is blown to the surface of the probe 2, so that hanging water on the surface of the probe 2 is blown to the lower end and then blown downwards by the rear-section air blowing module 8 until the hanging; finally, the water hanging on the probe 2 and the humidity sensing area 3 is cleared, and the phenomenon that the humidity sensor is mistakenly detected due to the water hanging is prevented.
As an embodiment of the present invention, an air blowing nozzle 711 is fixedly connected to an arc surface at one end of the cylinder sleeve 71; the blowing nozzle 711 is in a circular arc shape, and a blowing hole in the blowing nozzle 711 is obliquely arranged; when the probe 2 works, the piston plate 72 extrudes air in the cylinder sleeve 71 from an air outlet at the bottom end of the cylinder sleeve 71, the extruded compressed air is blown onto the cylindrical surface of the probe 2 after passing through the inclined air blowing holes in the air blowing nozzle 711, and the compressed air blown downwards in an inclined mode can blow hanging water on the probe 2 downwards more effectively.
As an embodiment of the present invention, a group of V-shaped grooves 61 is uniformly formed on the inclined inner wall of one end of the lower housing 6; when the probe 2 works, the caster 73 at one end of the piston plate 72 moves downwards along the inclined inner wall of the lower shell 6, the roller on the caster 73 rolls on the surface with the V-shaped groove 61 to push the piston plate 72 to move quickly and slowly, and then the pressure of air blown out from the air blowing nozzle 711 at the bottom end of the cylinder sleeve 71 is small and large, and the hanging water on the probe 2 is more easily blown downwards by the small and large air flow.
As an embodiment of the present invention, the rear blowing module 8 includes a corrugated air cushion 81, the corrugated air cushion 81 is in a circular arc shape, a group of corrugated air cushions 81 can be spliced into a circular ring, a partition plate 811 is disposed between each layer of the corrugated air cushions 81, and an air outlet hole inclined downward is disposed on a corrugated surface inside the corrugated air cushion 81; during operation, ball 56 drives cylinder sleeve 71 to move downwards through the ball nut pair, and after caster 73 at one end of piston plate 72 moves below the inclined inner wall of lower casing 6, the bottom surface of cylinder sleeve 71 begins to extrude the top surface of corrugated air cushion 81, and corrugated air cushion 81 compresses, and the air in corrugated air cushion 81 is compressed and then blows towards humidity sensing area 3 from the inside outlet hole of corrugated air cushion 81, and then realizes blowing the hanging water on the surface of humidity sensing area 3 downwards.
As a first embodiment of the rear blowing module in the present invention, a multi-stage telescopic rod 82 is arranged inside the corrugated air cushion 81, and each layer of partition 811 of the corrugated air cushion 81 from top to bottom is respectively penetrated by a cylinder of each stage from small to large of the multi-stage telescopic rod 82; the top end of the multi-stage telescopic rod 82 is fixedly connected with the top of the cavity of the corrugated air cushion 81, and the bottom end of the multi-stage telescopic rod 82 penetrates through the bottom end of the corrugated air cushion 81 and then is fixedly connected in the mounting hole of the bottom plate 9; during operation, ball 56 passes through the vice cylinder liner 71 that drives of ball nut and moves down, top surface on the corrugated air cushion 81 is extruded to cylinder liner 71 bottom surface, multistage telescopic link 82 from the top down segmentation is compressed in proper order, and then realize that corrugated air cushion 81 is compressed in proper order from the top down on each layer, compressed gas blows off in proper order from the top down in the gas outlet of corrugated air cushion 81 inboard, thereby realize that the hanging water on humidity induction zone 3 surface is blown from the top down and is caught up with the water droplet, blow the effect of catching up with better.
As a second embodiment of the rear blowing module of the present invention, a set of springs is disposed between each layer of partition 811 inside the corrugated air cushion 81, and the braking strips 83 are fixedly connected to the outer corrugated protrusions of the corrugated air cushion 81; the brake strip 83 is a round strip; a group of first semicircular grooves 62 are formed in the cylindrical surface of the other end of the lower shell 6, and the first semicircular grooves 62 are formed in the cylindrical surface of the lower shell 6, close to the brake strips 83; during operation, ball 56 passes through the vice cylinder liner 71 that drives of ball nut and moves down, and the top surface on cylinder liner 71 bottom surface extrusion ripple air cushion 81, and cylinder liner 71 passes through ripple air cushion 81 and promotes braking strip 83 and cross a semicircular groove 62, and then realizes that every layer of ripple air cushion 81 is compressed in proper order from the top down to realize that the surperficial hanging water of humidity induction zone 3 is blown from the top down and is driven down.
As an embodiment of the present invention, a second semicircular groove 63 is further disposed between every two adjacent first semicircular grooves 62 on the cylindrical surface of the lower shell 6; during operation, cylinder liner 71 promotes braking strip 83 through corrugated air cushion 81 and crosses No. one semicircular groove 62, and then braking strip 83 on corrugated air cushion 81 gets into No. two semicircular groove 63 again, realizes that corrugated air cushion 81 has the pause to frustrate when compressed and feels, and then big time is little during the air current that corrugated air cushion 81 venthole blew out, and the air current that big time is little blows the hanging water on humidity induction zone 3 surface downwards more easily and catches up.
As a third embodiment of the rear blowing module in the present invention, a braking strip 83 is fixedly connected to the outer corrugated protrusions of the corrugated air cushion 81; a rectangular groove 64 is formed in the cylindrical surface of the other end of the lower shell 6, and one end of a swinging block 84 is hinged to the end surface of the bottom end of the rectangular groove 64; a torsional spring is arranged at the hinged position of one end of the swinging block 84, and the middle part of the upper end of the swinging block 84 is hinged with one end of the movable plate 85; the step surface of one end of the movable plate 85 is contacted with the step surface of the other end of the swinging block 84; when the humidity sensing area 3 works, the ball screw 56 drives the cylinder sleeve 71 to move downwards through the ball screw nut pair, the bottom surface of the cylinder sleeve 71 extrudes the upper top surface of the corrugated air cushion 81, the braking strips 83 on the corrugated air cushion 81 extrude the other end of the movable plate 85, the braking strips 83 drive the swinging blocks 84 to swing by overcoming the elasticity of the torsion springs at one ends of the swinging blocks 84, and then each layer of the corrugated air cushion 81 is sequentially compressed from top to bottom, so that the hanging water on the surface of the humidity sensing area 3 is blown off from top to bottom; after the ball screw 56 drives the cylinder sleeve 71 to move upwards, the corrugated air cushion 81 expands again under the elastic force of the spring in the corrugated air cushion 81, the braking strips 83 on the corrugated air cushion 81 press the other end of the movable plate 85, the movable plate 85 swings around the hinge joint of the other end until the movable plate 85 is separated from the braking strips 83, and the step surface on the movable plate 85 is attached to the step surface on the swing block 84 again.
When the probe 2 works, the motor 51 drives one of the ball screws 56 to rotate through a gear, and then the ball screws 56 are connected through the synchronous belt 55 to realize linkage of the ball screws 56, the ball screws 56 drive the cylinder sleeve 71 to move downwards through the ball screw nut pair, the cylinder sleeve 71 drives the piston plate 72 to move downwards together, the caster 73 at one end of the piston plate 72 moves downwards along the inclined inner wall of the lower shell 6, simultaneously, the roller on the caster 73 rolls on the surface with the V-shaped groove 61 to push the piston plate 72 to move quickly and slowly, and then the pressure of gas blown out from the gas blowing nozzle 711 at the bottom end of the cylinder sleeve 71 is large and small, and the gas flow with large and small sizes can blow the hanging water on the probe 2 downwards more easily; the piston plate 72 transversely moves, the piston plate 72 extrudes the spring in the cylinder sleeve 71, meanwhile, the piston plate 72 extrudes air in the cylinder sleeve 71 from an air outlet hole at the bottom end of the cylinder sleeve 71, the extruded compressed air passes through an inclined air blowing hole in the air blowing nozzle 711 and then is blown onto the cylindrical surface of the probe 2, and the compressed air blown downwards in an inclined mode can more effectively blow hanging water on the probe 2 downwards and then is blown downwards by the rear-section air blowing module 8 until the hanging water drops; finally, the water hanging on the probe 2 and the humidity sensing area 3 is cleared, and the humidity sensor is prevented from being misdetected due to the water hanging; the ball screw 56 drives the cylinder sleeve 71 to move downwards through the ball screw nut pair, after the caster 73 at one end of the piston plate 72 moves below the inclined inner wall of the lower shell 6, the bottom surface of the cylinder sleeve 71 starts to extrude the upper top surface of the corrugated air cushion 81, the corrugated air cushion 81 is compressed, air in the corrugated air cushion 81 is compressed and then blown to the humidity sensing area 3 from an air outlet hole in the inner side of the corrugated air cushion 81, and therefore hanging water on the surface of the humidity sensing area 3 is blown downwards; a first embodiment of the rear blowing module: the ball screw 56 drives the cylinder sleeve 71 to move downwards through a ball screw nut pair, the bottom surface of the cylinder sleeve 71 extrudes the upper top surface of the corrugated air cushion 81, the multistage telescopic rods 82 are sequentially compressed from top to bottom, so that each layer of the corrugated air cushion 81 is sequentially compressed from top to bottom, and compressed air is sequentially blown out from top to bottom from air outlets inside the corrugated air cushion 81, so that the hanging water on the surface of the humidity sensing area 3 is blown off from top to bottom, water drops are blown off from top to bottom, and the blowing-off effect is better; second embodiment of the rear blowing module: the ball screw 56 drives the cylinder sleeve 71 to move downwards through a ball screw nut pair, the bottom surface of the cylinder sleeve 71 extrudes the upper top surface of the corrugated air cushion 81, the cylinder sleeve 71 pushes the brake strip 83 to cross the first semicircular groove 62 through the corrugated air cushion 81, and then each layer of the corrugated air cushion 81 is sequentially compressed from top to bottom, so that the hanging water on the surface of the humidity sensing area 3 is blown down from top to bottom; the cylinder sleeve 71 pushes the braking strips 83 to cross the first semicircular groove 62 through the corrugated air cushion 81, and then the braking strips 83 on the corrugated air cushion 81 enter the second semicircular groove 63, so that the corrugated air cushion 81 is instantly choked when being compressed, and then the airflow blown out from the air outlet hole of the corrugated air cushion 81 is large and small, and the airflow is more easily blown downwards to hang water on the surface of the humidity sensing area 3; a third embodiment of the rear blowing module: the ball screw 56 drives the cylinder sleeve 71 to move downwards through a ball screw nut pair, the bottom surface of the cylinder sleeve 71 extrudes the upper top surface of the corrugated air cushion 81, the braking strip 83 on the corrugated air cushion 81 extrudes the other end of the movable plate 85, the braking strip 83 drives the swinging block 84 to swing by overcoming the elasticity of the torsion spring at one end of the swinging block 84, and then each layer of the corrugated air cushion 81 is sequentially compressed from top to bottom, so that the hanging water on the surface of the humidity sensing area 3 is blown down from top to bottom; after the ball screw 56 drives the cylinder sleeve 71 to move upwards, the corrugated air cushion 81 expands again under the elastic force of the spring in the corrugated air cushion 81, the braking strips 83 on the corrugated air cushion 81 press the other end of the movable plate 85, the movable plate 85 swings around the hinge joint of the other end until the movable plate 85 is separated from the braking strips 83, and the step surface on the movable plate 85 is attached to the step surface on the swing block 84 again.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a prevent mistake and survey humidity transducer which characterized in that: the humidity sensor comprises a sensor main body (1), a probe (2), a humidity sensing area (3), an upper shell (4), a driving module (5), a lower shell (6), a front section blowing module (7), a rear section blowing module (8) and a bottom plate (9), wherein one end of the probe (2) is fixedly connected to the end face of the bottom end of the sensor main body (1); the cylindrical surface at one end of the probe (2) is fixedly connected with one end of the upper shell (4), and the other end of the probe (2) is fixedly connected with one end of the humidity sensing area (3); the other end of the upper shell (4) is fixedly connected with one end of the lower shell (6), and a driving module (5) is arranged in the upper shell (4); the other end of the lower shell (6) is fixedly connected with the end face of one end of the bottom plate (9), a front-section air blowing module (7) is arranged at one end in the lower shell (6), and a rear-section air blowing module (8) is arranged at the other end in the lower shell (6); the driving module (5) comprises a motor (51), a fixing plate (52), a driving gear (53), a driven gear (54), a synchronous belt (55) and a ball screw (56), the motor (51) is fixedly connected in a mounting hole at one end of the fixing plate (52), and the shaft end part of the motor (51) is fixedly connected at one end of the driving gear (53); the other end of the fixed plate (52) is fixedly connected to the inner wall of the upper shell (4); the driving gear (53) is meshed with the driven gear (54); the mounting hole of the driven gear (54) is fixedly connected with the middle cylindrical surface of the ball screw (56); the ball screws (56) are uniformly arranged in the circumferential direction, one end of each ball screw (56) is rotatably arranged in a mounting hole in one end of the upper shell (4), the other end of each ball screw (56) is rotatably arranged in a mounting hole in the bottom plate (9), and adjacent ball screws (56) are connected through a synchronous belt (55) to realize linkage; the front-section air blowing module (7) comprises a cylinder sleeve (71), a piston plate (72), a spring and a caster (73), wherein the cylinder sleeve (71) is rectangular, two sides of one end of the cylinder sleeve (71) are connected with a ball screw (56) through a ball screw nut pair, one end of the piston plate (72) is connected with the other end of the cylinder sleeve (71) in a cavity in a sliding manner, and the spring is arranged between the bottom end of the cavity of the cylinder sleeve (71) and the end face of one end of the piston plate (72); the other end of the piston plate (72) is provided with a caster (73); the caster (73) rolls along the inclined inner wall at one end of the lower shell (6); the lower end of the front section air blowing module (7) is provided with a rear section air blowing module (8); the rear section blowing module (8) is used for continuously blowing the water drops blown down by the front section blowing module (7) downwards.
2. A mis-sensing prevention humidity sensor as claimed in claim 1, wherein: an air blowing nozzle (711) is fixedly connected to an arc surface at one end of the cylinder sleeve (71); the air blowing nozzle (711) is in the shape of a circular arc, and air blowing holes in the air blowing nozzle (711) are obliquely arranged.
3. A mis-sensing prevention humidity sensor as claimed in claim 2, wherein: a group of V-shaped grooves (61) are uniformly formed in the inclined inner wall of one end of the lower shell (6).
4. A mis-sensing prevention humidity sensor as claimed in claim 1, wherein: the rear section air blowing module (8) comprises a corrugated air cushion (81), the corrugated air cushion (81) is arc-shaped, a group of corrugated air cushions (81) can be spliced into a ring, a partition plate (811) is arranged between each layer of the corrugated air cushions (81), and an air outlet hole which is inclined downwards is formed in the corrugated surface of the inner side of the corrugated air cushion (81).
5. An anti-misdetection humidity sensor according to claim 4, wherein: a plurality of stages of telescopic rods (82) are arranged in the corrugated air cushion (81), and each layer of partition plate (811) of the corrugated air cushion (81) from top to bottom is respectively penetrated by each stage of cylinder body of the plurality of stages of telescopic rods (82) from small to large; the top end of the multi-stage telescopic rod (82) is fixedly connected with the top of the cavity of the corrugated air cushion (81), and the bottom end of the multi-stage telescopic rod (82) penetrates through the bottom end of the corrugated air cushion (81) and then is fixedly connected in a mounting hole of the bottom plate (9).
6. An anti-misdetection humidity sensor according to claim 4, wherein: a group of springs are arranged between every two layers of partition plates (811) in the corrugated air cushion (81), and braking strips (83) are fixedly connected on corrugated bulges at the outer side of the corrugated air cushion (81); the brake strip (83) is round and long; a group of first semicircular grooves (62) are formed in the cylindrical surface of the other end of the lower shell (6), and the first semicircular grooves (62) are formed in the position, close to the brake strips (83), of the cylindrical surface of the lower shell (6).
7. A mis-detection prevention humidity sensor as claimed in claim 6, wherein: and a second semicircular groove (63) is formed between every two adjacent first semicircular grooves (62) on the cylindrical surface of the lower shell (6).
8. An anti-misdetection humidity sensor according to claim 4, wherein: the outer side corrugated bulges of the corrugated air cushion (81) are fixedly connected with a braking strip (83); a rectangular groove (64) is formed in the cylindrical surface of the other end of the lower shell (6), and one end of a swinging block (84) is hinged to the end surface of the bottom end of the rectangular groove (64); a torsional spring is arranged at the hinged position of one end of the swinging block (84), and the middle part of the upper end of the swinging block (84) is hinged with one end of the movable plate (85); the step surface at one end of the movable plate (85) is contacted with the step surface at the other end of the swinging block (84).
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| CN201810721196.1A CN109099953B (en) | 2018-07-04 | 2018-07-04 | Anti-mismeasuring humidity sensor |
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| US3614074A (en) * | 1969-11-14 | 1971-10-19 | Moore Dry Kiln Co | Direct-fired kiln furnace control system |
| CN103116002A (en) * | 2013-01-24 | 2013-05-22 | 佛山市海天调味食品股份有限公司 | Mismeasurement preventing device for humidity sensor |
| CN104005857A (en) * | 2013-02-22 | 2014-08-27 | 福特环球技术公司 | Humidity sensor diagnostics |
| CN105911114A (en) * | 2016-07-05 | 2016-08-31 | 长春吉大科学仪器设备有限公司 | Method and device for eliminating error of online detector of bulk material moisture by utilizing gas auxiliary method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3614074A (en) * | 1969-11-14 | 1971-10-19 | Moore Dry Kiln Co | Direct-fired kiln furnace control system |
| CN103116002A (en) * | 2013-01-24 | 2013-05-22 | 佛山市海天调味食品股份有限公司 | Mismeasurement preventing device for humidity sensor |
| CN104005857A (en) * | 2013-02-22 | 2014-08-27 | 福特环球技术公司 | Humidity sensor diagnostics |
| CN105911114A (en) * | 2016-07-05 | 2016-08-31 | 长春吉大科学仪器设备有限公司 | Method and device for eliminating error of online detector of bulk material moisture by utilizing gas auxiliary method |
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