A digital composite sensor

Abstract

The present application discloses a digital composite sensor, which includes a housing, a temperature and humidity sensor, a pressure sensor, and a cover body for covering the temperature and humidity sensor and the pressure sensor; the cover body is provided with two detection ports, and the cover body is provided with a protective device for forming a wind curtain wall at the detection ports; the cover body is provided with an adsorption device for quickly adsorbing dust and a condensation device for quickly reducing the humidity in the cover body, and the protective device controls the operation of the adsorption device; the adsorption device includes an adsorption column rotatably connected to the cover body, an adhesion mechanism provided on the adsorption column, a cleaning mechanism for cleaning dust on the adhesion mechanism, and a power mechanism for controlling the rotation of the adsorption column. The present application has the effect of processing dust in the sensor housing, ensuring that the sensor can work normally even in a high humidity environment.

Description

Technical Field

[0001] The present application relates to the field of sensor technology, and in particular to a digital composite sensor. Background Art

[0002] At present, the sensors used to monitor the temperature, humidity and gauge pressure in the sealed cabin generally use two independent ones, namely, temperature and humidity sensors and gauge pressure sensors. The disadvantage is that both temperature and humidity sensors and gauge pressure sensors use analog temperature and humidity transmitters and gauge pressure transmitters, and they occupy a large space. The output signals of analog temperature and humidity transmitters and gauge pressure transmitters are voltage or current. PLC, single-chip instrument, PC and other equipment must be converted by A / D to read and identify the voltage or current signals output by these temperature and humidity transmitters and gauge pressure transmitters. Therefore, the circuit is complex, the measurement accuracy is low, the anti-interference ability is poor, and the cost is high; analog temperature and humidity transmitters or gauge pressure transmitters generally need to design signal acquisition, filtering, and conditioning circuits, and they must be calibrated and calibrated complexly, which makes it difficult to improve the measurement accuracy, and it is difficult to reach a high level in terms of linearity, repeatability, and consistency.

[0003] In the related art, the Chinese patent with application number CN200920084181.5 proposes a digital composite sensor. It belongs to the technical field of temperature, humidity and pressure sensors. It mainly provides a digital composite sensor integrating temperature, humidity and pressure sensors. Its main features are: including sensor housing, sensor cover, probe cap, five-core socket, 7-core connector, data processing circuit board assembly, gas nozzle, pressure guide tube, gauge pressure sensor and temperature and humidity sensor; the data processing circuit board assembly includes temperature and humidity sensor, single-chip microcomputer, μP monitoring chip, voltage conversion circuit, communication chip, RS485 digital network bus output circuit, external digital interface and programming circuit, temperature and humidity sensor, μP monitoring chip, communication chip and programming circuit are connected to single-chip microcomputer respectively, and external digital interface is connected to communication chip. It has the characteristics of high measurement accuracy, good long-term stability, simple structure, small size, good frequency response characteristics, etc., and can be widely used in various sealed cabin systems.

[0004] Regarding the above-mentioned related technologies, the inventors believe that there are the following defects: when the humidity in the detection space is high, since the shell is placed in the air, some dust in the air will enter the shell. At this time, the dust can adhere to the surface of the temperature and humidity sensor and affect the temperature and humidity detection accuracy. Therefore, when the humidity is too high, the humidity needs to be adjusted in time. Summary of the invention

[0005] In order to improve the problem that dust in the air affects the normal operation of temperature and humidity sensor detection, the present application provides a digital composite sensor.

[0006] The digital composite sensor provided in this application adopts the following technical solution:

[0007] A digital composite sensor comprises a housing, a temperature and humidity sensor, a pressure sensor and a cover for covering the temperature and humidity sensor and the pressure sensor;

[0008] The cover body is provided with two detection ports, and the cover body is provided with protective devices at the detection ports for forming a wind curtain wall at the detection ports;

[0009] The cover body is provided with an adsorption device for quickly adsorbing dust and a condensation device for quickly reducing the humidity in the cover body, and the protection device controls the operation of the adsorption device;

[0010] The adsorption device comprises an adsorption column rotatably connected to the cover body, an adsorption mechanism arranged on the adsorption column, a cleaning mechanism for cleaning dust on the adsorption mechanism, and a power mechanism for controlling the rotation of the adsorption column.

[0011] Optionally, the protective device includes an air pump, a main pipe, a first pipe and a second pipe, the main pipe is connected to the air pump, the first pipe and the second pipe are respectively connected to two ends of the main pipe, the first pipe and the second pipe are both provided with solenoid valves, the first pipe and the second pipe are respectively provided at the two detection ports, and the first pipe and the second pipe are both adapted to the detection ports.

[0012] Optionally, the adhesion mechanism includes two adsorption sheets, electrostatic dust removal paper arranged on the inner wall of the adsorption sheet, and an unfolding component for controlling the unfolding of the adsorption sheet, the electrostatic dust removal paper is adapted to the inner wall of the adsorption sheet, the adsorption sheet is rotatably connected to the adsorption column, the axis of rotation of the adsorption sheet and the adsorption column is perpendicular to the axial direction of the adsorption column, and the adsorption sheet and the adsorption column are elastically connected by a torsion spring.

[0013] Optionally, the unfolding assembly includes an unfolding frame fixedly connected to the outer wall of the cover body, an unfolding tube fixed on the unfolding frame, an air blowing tube connected to the bottom of the unfolding tube, a float floatingly arranged in the unfolding tube, an infrared transmitter, an infrared receiver, a slip ring slidably arranged outside the adsorption column, a movable part driving the slip ring to move, two unfolding plates fixed on the slip ring and a retracting part for retracting the adsorption sheet, the unfolding tube is vertically arranged, the air blowing tube is horizontally arranged, the cross-sectional area of ​​the air blowing tube is larger than the cross-sectional area of ​​the unfolding tube, the infrared transmitter and the infrared receiver are both installed at the bottom of the unfolding tube and are respectively located on both sides of the symmetrical central axis of the unfolding tube, the infrared receiver is electrically connected to the movable part, the unfolding plate moves to the outside of the adsorption sheet and limits the unfolding of the adsorption sheet, and the air blowing tube is directly opposite to the opening of the first tube.

[0014] Optionally, the retraction part includes a retraction ring slidably arranged on the top of the adsorption column and a retraction rod for driving the retraction ring to move, and the retraction ring controls the adsorption sheet to swing toward the adsorption column during the movement of the retraction ring toward the adsorption sheet, and the retraction rod is slidably arranged on the adsorption column, and the cross-sectional circular size of the retraction rod gradually decreases in the direction toward the retraction ring.

[0015] Optionally, the power mechanism includes an impeller rotatably connected to the outer wall of the cover body, a first bevel gear coaxially fixed to the impeller, a second bevel gear meshingly connected to the first bevel gear, and a belt, the axial direction of the first bevel gear is perpendicular to the axial direction of the second bevel gear, the axial direction of the adsorption column is arranged parallel to the axial direction of the second bevel gear, the belt is used to connect the rotating shaft of the first bevel gear and the outer wall of the adsorption column, and the blades of the impeller are opposite to the opening of the second tube.

[0016] Optionally, the condensation device includes an exhaust fan for extracting air from the cover body, a condensation box, a condensation plate and a collection box, the output end of the exhaust fan is connected to the condensation box, the condensation plate is arranged in the condensation box and installed outside the collection box, and the collection box is used to collect condensed water dripping from the condensation plate.

[0017] Optionally, the cleaning mechanism includes a sponge member, a driving member for controlling the movement of the sponge member toward the electrostatic dust paper, a replacement component for replacing the electrostatic dust paper, and a water supply component for supplying water to the sponge member. The adsorption sheet is provided with an inner cavity, the replacement component is arranged in the inner cavity, the sponge member also slides in the inner cavity of the adsorption sheet, and the sponge member moves to abut against the side of the electrostatic dust paper that adsorbs dust.

[0018] Optionally, the water supply assembly includes a water supply pump, a water supply chamber arranged in the adsorption column, multiple water supply pipes and multiple nozzles. The water supply pump is installed in the collection box and is used to pump condensed water into the water supply chamber. One end of the water supply pipe is connected to the nozzle, and the other end is connected to the water supply chamber. The nozzle is facing the sponge member.

[0019] Optionally, the wall surface of the cover body is provided with a cooling cavity, a cooling pump and a water absorption member, the cooling cavity surrounds the outside of the cover body, the cooling pump is arranged at the water inlet of the cooling cavity, the cooling pump is connected to two cooling pipes, the cooling pipes are connected to the collection box, and the other end of the cooling pipes is connected to the water supply cavity, the water absorption member is arranged at the position of the water outlet of the cover body, and the water absorption member is used to absorb the cooling water passing through the cooling cavity.

[0020] In summary, the present application includes at least one of the following beneficial technical effects:

[0021] 1. When the air pump is turned on, the first tube and the second tube blow air toward the corresponding detection port. At this time, a wind curtain wall is formed outside the detection port and has an isolation effect. At this time, the dust outside the cover body is isolated by the wind curtain wall, thereby achieving a protective effect on the detection port. However, the first tube must be opened and the second tube must be closed first. The air cylinder is directly opposite to the opening of the first tube. When the air pump starts working, the solenoid valve on the first tube is opened, and the first tube blows air directly toward the air cylinder. At this time, the float moves from the initial position to the top of the unfolding cylinder, and as long as the first tube does not stop blowing, the float is always suspended at the top of the unfolding cylinder. The infrared receiver receives the signal from the infrared transmitter, and the infrared receiver controls the moving part to work. The moving part moves the slip ring in the direction away from the adsorption sheet. Under the elastic force of the torsion spring restoring its original shape, the adsorption sheet unfolds in the direction away from the adsorption column, and the electrostatic dust removal paper is exposed to the air of the cover body, and then the electrostatic dust removal paper begins to adsorb the dust inside the cover body.

[0022] 2. Open the second tube again to drive the impeller. The impeller drives the first bevel gear to rotate, and the first bevel gear drives the second bevel gear to rotate. The second bevel gear controls the rotation of the adsorption column through the belt. When the adsorption column is rotating, the electrostatic dust removal paper on the adsorption sheet adsorbs the dust to complete the dust adsorption work in the cover body. After completing the dust adsorption work, you can choose to stop the air pump, and move the retraction rod toward the retraction ring. The radius of the cross-section circle at the contact position between the retraction rod and the retraction ring gradually increases. At this time, the retraction ring moves toward the direction of the adsorption sheet and moves toward the rotation connection position between the adsorption sheet and the adsorption column. Therefore, the retraction ring squeezes the adsorption sheet, and the retraction ring squeezes the two adsorption sheets into the adsorption groove to complete the retraction of the adsorption sheet.

[0023] 3. When the adsorption sheet rotates toward the adsorption slot, the electrostatic dust removal paper needs to be replaced. You only need to control the two winding motors and the two winding rollers to rotate in the same direction and frequency, and spray water on the sponge. When the sponge moves to abut against the side of the electrostatic dust removal paper that adheres to the dust, the electrostatic dust removal paper is wiped during the movement to achieve the dust cleaning effect, so as to prevent the dust from running back into the cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0025] Figure 2 is a schematic diagram of an adsorption device in an embodiment of the present application;

[0026] Figure 3 yes Figure 1 A magnified schematic diagram of part A;

[0027] Figure 4 yes Figure 2 Schematic diagram of the enlarged portion B.

[0028] Figure numerals: 1, shell; 2, temperature and humidity sensor; 3, pressure sensor; 4, cover; 5, detection port; 6, adsorption column; 7, air pump; 8, main pipe; 9, first pipe; 10, second pipe; 11, adsorption sheet; 12, electrostatic dust removal paper; 13, unfolding frame; 14, unfolding tube; 15, air cylinder; 16, float; 17, infrared transmitter; 18, infrared receiver; 19, slip ring; 20, moving part; 21, unfolding plate; 22, retraction ring; 23, retraction rod; 24, impeller; 25, first bevel gear; 26, second bevel gear; 27, belt; 28, exhaust fan; 29, condensation box; 30, condensation plate; 31, collection box; 32, sponge part; 33, driving part; 34, winding roller; 35, water supply chamber; 36, water supply pipe; 37, nozzle; 38, cooling chamber; 39, cooling pump; 40, water absorbing part. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-4 This application is described in further detail.

[0030] The present application embodiment discloses a digital composite sensor. Figure 1A digital composite sensor includes a housing 1, a temperature and humidity sensor 2, a pressure sensor 3, and a cover 4 for covering the temperature and humidity sensor 2 and the pressure sensor 3; a data processing circuit board assembly is also arranged in the housing 1, and the data processing circuit board assembly includes a temperature and humidity sensor 2IC3, a gauge pressure sensor S1, a single-chip microcomputer IC2, a yP monitoring chip IC4, a voltage conversion circuit, a communication chip IC5, an RS485 digital network bus output circuit and a programming circuit. The single-chip microcomputer IC2 continuously reads the measurement data of the temperature and humidity sensor 2IC3 through the I2C digital interface, and collects the gauge pressure value output by the gauge pressure sensor S1 at the same time. After calculation and processing, the temperature, humidity, and pressure data are stored in the buffer. When receiving the data reading command from the host computer, the latest data is directly read from the buffer, and after CRC verification and packaging, it is sent to the host computer through the communication chip IC5. The FHC-1 composite sensor is a three-in-one sensor dedicated to monitoring the temperature, humidity and gauge pressure in a sealed cabin.

[0031] Reference Figure 1 The cover body 4 is also provided with two detection ports 5, which are used for the temperature and humidity sensor 2 to monitor the temperature and humidity of the detection space. The cover body 4 is provided with a protective device for forming a wind curtain wall at the detection port 5. Since a filter is mostly not provided at the detection port 5 in the current technology, dust in the air enters the cover body 4 from the detection port 5. Therefore, when the humidity in the cover body 4 is too high, the dust needs to be adsorbed while the humidity is processed. The cover body 4 is provided with a protective device for forming a wind curtain wall at the detection port 5. The protective device is used to protect the detection port 5 to prevent subsequent dust from entering the cover body 4 again from the detection port 5; an adsorption device for quickly adsorbing dust and a condensation device for quickly reducing the humidity in the cover body 4 are provided in the cover body 4, and the protective device controls the operation of the adsorption device; the adsorption device quickly adsorbs the dust in the cover body 4 when the protective device blocks the detection port 5, thereby protecting the temperature and humidity sensor 2 and other components in the housing 1 to the greatest extent and at the highest speed.

[0032] Reference Figure 1-Figure 2The protective device includes an air pump 7, a main pipe 8, a first pipe 9 and a second pipe 10. The main pipe 8 is connected to the air pump 7. The first pipe 9 and the second pipe 10 are respectively connected to both ends of the main pipe 8. The first pipe 9 and the second pipe 10 are both provided with solenoid valves. The first pipe 9 and the second pipe 10 are respectively provided at the two detection ports 5. The first pipe 9 and the second pipe 10 are both adapted to the detection port 5. In this embodiment, the detection port 5 can be set to an arc shape or a rectangle, and the first pipe 9 and the second pipe 10 are set to the same shape as the corresponding side walls of the detection port 5, and the first The length of the tube 9 is greater than the length of the side wall corresponding to the detection port 5, thereby ensuring that the wind curtain wall can cover the detection port 5. The solenoid valve is used to control the opening or closing of the first tube 9 or the second tube 10. The blowing direction of the first tube 9 and the second tube 10 is set along the length direction of the adsorption column 6. Therefore, when the air pump 7 is turned on, the first tube 9 and the second tube 10 blow air toward the corresponding detection port 5. At this time, a wind curtain wall is formed outside the detection port 5 and has an isolation effect. At this time, the dust outside the cover body 4 is isolated by the wind curtain wall, thereby achieving a protective effect on the detection port 5.

[0033] Reference Figure 1-Figure 4 The adsorption device includes an adsorption column 6 rotatably connected to the cover body 4, an adhesion mechanism arranged on the adsorption column 6, a cleaning mechanism for cleaning dust on the adhesion mechanism, and a power mechanism for controlling the rotation of the adsorption column 6. The adsorption column 6 is horizontally arranged, one end of the adsorption column 6 extends into the cover body 4, and the other end is located at the other end of the cover body 4. The adsorption column 6 is rotatably connected to the cover body 4 through a bearing. The adhesion mechanism and the cleaning mechanism are both arranged on the adsorption column 6. When the wind curtain wall is formed, the adhesion mechanism is needed to adsorb the dust in the cover body 4, and the cleaning mechanism is needed to clean the dust on the adhesion mechanism.

[0034] Reference Figure 2-Figure 4The adhesion mechanism includes two adsorption sheets 11, an electrostatic dust removal paper 12 fixed on the inner wall of the adsorption sheet 11, and an unfolding component for controlling the unfolding of the adsorption sheet 11. The electrostatic dust removal paper 12 is adapted to the inner wall of the adsorption sheet 11, and in this embodiment, the electrostatic dust removal paper 12 can also be larger than the inner wall size of the adsorption sheet 11. The electrostatic dust removal paper 12 can be fixed on the inner wall of the adsorption sheet 11. Of course, the electrostatic dust removal paper 12 in this embodiment can move inside and outside the adsorption sheet 11, which is convenient for replacing the electrostatic dust removal paper 12, and can greatly improve the working efficiency of the adhesion mechanism. 11 is rotatably connected to the adsorption column 6, and two adsorption grooves are arranged on the side wall of the adsorption column 6. The adsorption sheet 11 rotates in the adsorption groove. When the adsorption sheet 11 is retracted, most of the adsorption sheet 11 is located in the adsorption groove, reducing the area occupied by the adsorption column 6 and the adsorption sheet 11. The axial direction of the rotation of the adsorption sheet 11 and the adsorption column 6 is perpendicular to the axial direction of the adsorption column 6. The adsorption sheet 11 is elastically connected to the adsorption through a torsion spring, and the two ends of the torsion spring are fixedly connected to the adsorption sheet 11 and the inner wall of the adsorption groove respectively. When the adsorption sheet 11 is retracted into the adsorption groove, the torsion spring is in a deformed state.

[0035] Reference Figure 1-Figure 4 The unfolding assembly includes an unfolding frame 13 fixedly connected to the outer wall of the cover body 4, an unfolding tube 14 fixed on the unfolding frame 13, an air blowing tube 15 connected to the bottom of the unfolding tube 14, a floating ball 16 floatingly arranged in the unfolding tube 14, an infrared transmitter 17, an infrared receiver 18, a slip ring 19 slidably arranged outside the adsorption column 6, a moving part 20 driving the slip ring 19 to move, two unfolding plates 21 fixed on the slip ring 19 and a retracting part for retracting the adsorption sheet 11, the unfolding tube 14 is vertically arranged, the air blowing tube 15 is horizontally arranged, the unfolding tube 14 and the blowing tube are vertically arranged and connected to each other, the cross-sectional area of ​​the air blowing tube 15 is larger than the cross-sectional area of ​​the unfolding tube 14, the infrared transmitter 17 and the infrared receiver 18 are both installed at the bottom of the unfolding tube 14 and are respectively located at the bottom of the unfolding tube 14 The central axis is symmetrically positioned. When the air in the blowing cylinder 15 enters the unfolding cylinder 14, due to the reduction in the cross-sectional area of ​​the unfolding cylinder 14, the pressure in the unfolding cylinder 14 is greater than the pressure of the blowing cylinder. At the same time, the flow rate is also greater than that in the unfolding cylinder 14, so it is convenient for the float 16 to float in the unfolding cylinder 14. The float 16 is made of lightweight material. In this embodiment, the movable part 20 uses an electric push rod. The movable part 20 controls the movement of the slip ring 19. The slip ring 19 is sleeved and slid outside the adsorption column 6. The two unfolding plates 21 are also symmetrically arranged relative to the central axis of the adsorption column 6. In the initial position, the adsorption sheet 11 is located in the adsorption groove and the unfolding plate 21 is located on the outside of the adsorption sheet 11, and the unfolding plate 21 limits the unfolding of the adsorption sheet 11, that is, the unfolding plate 21 limits the unfolding of the adsorption sheet 11.

[0036] The air cylinder 15 is directly opposite to the opening of the first tube 9. When the air pump 7 starts to work, the solenoid valve on the first tube 9 is opened, and the first tube 9 blows air directly to the air cylinder 15. At this time, the float 16 moves from the initial position to the top of the unfolding tube 14, and as long as the first tube 9 does not stop blowing, the float 16 is always suspended on the top of the unfolding tube 14. The infrared receiver 18 receives the signal from the infrared transmitter 17, and the infrared receiver 18 controls the moving part 20 to work. The moving part 20 moves the slip ring 19 in the direction away from the adsorption sheet 11. Under the elastic force of the torsion spring restoring its original shape, the adsorption sheet 11 is unfolded in the direction away from the adsorption column 6, and the electrostatic dust removal paper 12 is exposed to the air of the cover body 4, and then the electrostatic dust removal paper 12 begins to adsorb dust in the cover body 4.

[0037] Reference Figure 1-Figure 4 , the power mechanism includes an impeller 24 rotatably connected to the outer wall of the cover body 4, a first bevel gear 25 coaxially fixed to the impeller 24, a second bevel gear 26 meshingly connected to the first bevel gear 25, and a belt 27. The axial direction of the first bevel gear 25 is perpendicular to the axial direction of the second bevel gear 26, and the axial direction of the adsorption column 6 is arranged in parallel with the axial direction of the second bevel gear 26. The belt 27 is used to connect the rotating shaft of the first bevel gear 25 and the outer wall of the adsorption column 6. The rotation direction of the impeller 24 and the rotation axis direction of the adsorption column 6 are arranged perpendicular to each other. Therefore, the blades of the impeller 24 are facing the opening of the second tube 10, which is more conducive to the second tube 10 when forming a wind curtain wall. The impeller 24 can also be driven. The first bevel gear 25 and the second bevel gear 26 are both rotatably connected to the outer wall of the cover body 4. Of course, in this embodiment, a protective cover can also be provided to cover the impeller 24, the first bevel gear 25 and the second bevel gear 26. When the belt 27 and the first bevel gear Under the action of the friction between the rotating shaft 25 and the adsorption column 6, the impeller 24 controls the rotation of the adsorption column 6. In this embodiment, the impeller 24 is set to drive instead of setting a motor to drive directly for several reasons. First, the adsorption column 6 can be driven to rotate by wind energy, thereby saving energy. Secondly, the wind curtain wall can protect the detection port 5 during its formation, and it is also helpful for the air disturbance in the cover body 4. It can greatly accelerate the movement of dust near the detection port 5 and the dust in the cover body 4 to make it more violent, thereby accelerating the adsorption efficiency of the electrostatic dust removal paper 12 on the dust. As the impeller 24 drives the first bevel gear 25 to rotate, the first bevel gear 25 drives the second bevel gear 26 to rotate, and the second bevel gear 26 controls the rotation of the adsorption column 6 through the belt 27. During the rotation of the adsorption column 6, the electrostatic dust removal paper 12 on the adsorption sheet 11 adsorbs the dust to complete the dust adsorption work in the cover body 4.

[0038] Reference Figure 1-Figure 4When the adsorption work of the electrostatic dust removal paper 12 is completed, the adsorption sheet 11 needs to be folded up. The retracting part includes a retracting ring 22 slidably arranged on the top of the adsorption column 6 and a retracting rod 23 for driving the retracting ring 22 to move. The retracting ring 22 controls the adsorption sheet 11 to swing toward the adsorption column 6 during the movement of the adsorption sheet 11. The retracting rod 23 is slidably arranged on the adsorption column 6, and the cross-sectional circular size of the retracting rod 23 gradually decreases along the direction toward the retracting ring 22. The retracting ring 22 covers the two adsorption sheets 11, that is, the inner wall of the retracting ring 22 is located on the outside of the two adsorption sheets 11. The movement direction of the retracting rod 23 is perpendicular to the length direction of the adsorption column 6. The retracting rod 23 can be driven manually or by an electric push rod. In this embodiment, it is preferably controlled by an electric push rod. No matter how the adsorption column 6 rotates, the position of its top end will not change. Therefore, it can be driven by the retracting rod 23. To control the movement of the retraction ring 22, during the rotation of the adsorption column 6, in order to facilitate the control of the movement of the retraction ring 22, a slider is fixedly connected to the inner wall of the retraction ring 22, and a slide groove is provided on the inner wall of the adsorption column 6 for the movement of the slider. A spring is fixedly connected between one end of the slider and the inner wall of the corresponding end of the slide groove to realize the elastic movement of the retraction ring 22. When the retraction ring 22 is away from the adsorption sheet 11, the spring is in its original shape, and when the adsorption sheet 11 is retracted, the retraction rod 23 can be used to move toward the retraction ring 22. The radius of the cross-sectional circle at the abutment position of the retraction rod 23 and the retraction ring 22 gradually increases. At this time, the retraction ring 22 moves toward the adsorption sheet 11 and moves toward the rotation connection position of the adsorption sheet 11 and the adsorption column 6. Therefore, the retraction ring 22 squeezes the adsorption sheet 11, and the retraction ring 22 squeezes the two adsorption sheets 11 into the adsorption groove to complete the retraction of the adsorption sheet 11.

[0039] Reference Figure 1-Figure 2 The condensation device includes an exhaust fan 28 for extracting air from the cover body 4, a condensation box 29, a condensation plate 30 and a collection box 31. The output end of the exhaust fan 28 is connected to the condensation box 29. The condensation plate 30 is arranged in the condensation box 29 and installed outside the collection box 31. The collection box 31 is used to collect condensed water dripping from the condensation plate 30. The input end of the exhaust fan 28 is connected to the cover body 4, so that the air in the cover body 4 can be dried. In this process, the air at the position of the detection port 5 enters normally, but the wind curtain wall can still block part of the dust. A filter needs to be set at the position where the exhaust fan 28 is connected to the cover body 4 to prevent dust from entering the condensation box 29; the exhaust fan 28 is controlled by the temperature and humidity sensor 2. When the exhaust fan 28 extracts air from the cover body 4, the moisture in the air encounters the condensation plate 30 and condenses on the condensation plate 30, and the condensed water on the condensation plate 30 drips to the collection box 31, completing the effect of drying the condensation box 29.

[0040] The cleaning mechanism includes a sponge member 32, a driving member 33 for controlling the sponge member 32 to move toward the electrostatic dust removal paper 12, a replacement component for replacing the electrostatic dust removal paper 12, and a water supply component for supplying water to the sponge member 32. The adsorption sheet 11 is provided with an inner cavity, and the replacement component is arranged in the inner cavity. The sponge member 32 also slides in the inner cavity of the adsorption sheet 11. The sponge member 32 moves to abut against the side of the electrostatic dust removal paper 12 that adsorbs dust. The movement of the driving member 33 can also be set as an electric push rod. The replacement component includes two winding motors and two winding rollers 34. The winding motor controls The winding roller 34 rotates, and the winding motor is fixed in the inner cavity of the adsorption sheet 11. In this embodiment, the winding motor and the winding roller 34 are both lightweight products. Entrances are provided at both ends of the adsorption sheet 11, and the electrostatic size paper fits with the entrance and passes through the entrance. The two ends of the electrostatic dust removal paper 12 are respectively fixedly connected to the surrounding walls of the two winding rollers 34. When the adsorption sheet 11 rotates toward the adsorption groove, the electrostatic dust removal paper 12 needs to be replaced. It is only necessary to control the two winding motors and the two winding rollers 34 to rotate in the same direction and at the same frequency to achieve the effect of replacing the electrostatic dust removal paper 12.

[0041] Reference Figure 1-Figure 2 The water supply assembly includes a water supply pump, a water supply chamber 35 arranged in the adsorption column 6, a plurality of water supply pipes 36 and a plurality of nozzles 37. The water supply pump is installed in the collection box 31 and is used to pump condensed water into the water supply chamber 35. One end of the water supply pipe 36 is connected to the nozzle 37, and the other end is connected to the water supply chamber 35. The nozzle 37 is directly opposite to the sponge member 32. When the sponge member 32 is in the initial state, the sponge member 32 abuts against the nozzle 37. In this embodiment, the nozzle 37 can use a product that can extract water from the water supply chamber 35. A guide column for guiding the water supply pipe 36 is rotatably connected to the end of the adsorption column 6. The guide column rotates with the adsorption column 6 through a bearing, so in the rotation process of the adsorption column 6 , the guide column and the water supply pipe 36 will not rotate. When the electrostatic dust removal paper 12 needs to be replaced, the nozzle 37 sprays water on the sponge part 32. In this embodiment, no matter in which process, it is necessary to ensure that there is no simple water in the cover body 4, that is, the sponge part 32 is moistened, and water cannot flow out of the sponge part 32. Of course, even if the sponge part 32 is squeezed out of water, it will fall into the adsorption sheet 11 and will not flow out of the adsorption sheet 11. When the sponge part 32 moves to abut against the side of the electrostatic dust removal paper 12 that adheres to the dust, as the electrostatic dust removal paper 12 moves, the electrostatic dust removal paper 12 is wiped to achieve the dust cleaning effect to prevent the dust from running back into the cover body 4.

[0042] Reference Figure 1-Figure 2The wall surface of the cover body 4 is provided with a cooling cavity 38, a cooling pump 39 and a water absorbent 40. The cooling cavity 38 surrounds the outside of the cover body 4. The cooling pump 39 is arranged at the water inlet of the cooling cavity 38. The cooling pump 39 is connected to two cooling pipes. The cooling pipes are connected to the collecting box 31, and the other end of the cooling pipes is connected to the water supply cavity 35. The water absorbent 40 is arranged at the position of the water outlet of the cover body 4. The water absorbent 40 is used to absorb the cooling water passing through the cooling cavity 38. The water absorbent 40 is set as a polymer water absorbent resin: the polymer water absorbent resin has excellent water absorption and water retention properties, and can absorb and lock water equivalent to hundreds or even thousands of times its own weight. The water absorbent 40 is installed inside the inner wall of the cover body 4 and extends into the water supply cavity 35. The cooling pipe in the cavity 35 also needs to be guided by a guide column, and the guide column is installed at the center of the adsorption column 6, and the water supply pipe 36 and the cooling pipe are both inserted from the guide column into the water supply cavity 35, and solenoid valves are provided on the water supply pipe 36 and the cooling pipe. When work is required, the corresponding solenoid valve can be opened. The cooling pipe can draw the condensed water in the water supply cavity 35 to the inside of the cover body 4 for cooling. Because no matter whether it is for dust processing or humidity processing, the flow of air in the cover body 4 is different from the temperature in the environment. Therefore, it is necessary to use the cooling water flow in the cooling cavity 38 to keep the temperature in the cover body 4 warm to a certain extent, so as to ensure the stability of the temperature in the cover body 4 to the greatest extent.

[0043] The implementation principle of a digital composite sensor in the embodiment of the present application is as follows: when the air pump 7 is turned on, the first tube 9 and the second tube 10 blow air toward the corresponding detection port 5, and a wind curtain wall is formed outside the detection port 5 to achieve an isolation effect. At this time, the dust outside the cover body 4 is isolated by the wind curtain wall, thereby achieving a protective effect on the detection port 5; however, it is necessary to first open the first tube 9 and close the second tube 10, and the air cylinder 15 is facing the opening of the first tube 9. When the air pump 7 starts to work, the solenoid valve on the first tube 9 is opened, and the first tube 9 blows air toward the air cylinder 15. At this time, the float 16 moves from the initial position to the top of the unfolding tube 14, and as long as the first tube 9 does not stop blowing, the float 16 is always suspended on the top of the unfolding tube 14, and the infrared receiver 18 receives the signal of the infrared transmitter 17, and the infrared receiver 18 controls the moving part 20 to work, and the moving part 20 moves the slip ring 19 in the direction away from the adsorption sheet 11. Under the elastic force of the torsion spring restoring its original shape, the adsorption sheet 11 unfolds in the direction away from the adsorption column 6, and the electrostatic dust removal paper 12 is exposed to the air of the cover body 4, and then the electrostatic dust removal paper 12 begins to adsorb the dust in the cover body 4.

[0044] Then open the second tube 10 to drive the impeller 24, the impeller 24 mobilizes the first bevel gear 25 to rotate, the first bevel gear 25 drives the second bevel gear 26 to rotate, and the second bevel gear 26 controls the adsorption column 6 to rotate through the belt 27. During the rotation of the adsorption column 6, the electrostatic dust removal paper 12 on the adsorption sheet 11 adsorbs the dust to complete the dust adsorption work in the cover body 4; after completing the dust adsorption work, you can choose to stop the air pump 7, and move the retraction rod 23 toward the retraction ring 22. The cross-sectional radius of the contact position between the retraction rod 23 and the retraction ring 22 gradually increases. At this time, the retraction ring 22 moves toward the adsorption sheet 11 and moves toward the rotational connection position of the adsorption sheet 11 and the adsorption column 6. Therefore, the retraction ring 22 squeezes the adsorption sheet 11, and the retraction ring 22 squeezes the two adsorption sheets 11 into the adsorption groove to complete the retraction of the adsorption sheet 11.

[0045] When the adsorption sheet 11 rotates toward the adsorption slot, the electrostatic dust removal paper 12 needs to be replaced. It is only necessary to control the two winding motors and the two winding rollers 34 to rotate in the same direction and frequency, and spray water on the sponge part 32. When the sponge part 32 moves to abut against the side of the electrostatic dust removal paper 12 that adheres to the dust, the electrostatic dust removal paper 12 is wiped during the movement to achieve the dust cleaning effect to prevent the dust from running back into the cover body 4.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A digital composite sensor, characterized in that: It comprises a housing (1), a temperature and humidity sensor (2), a pressure sensor (3), and a cover (4) for covering the temperature and humidity sensor (2) and the pressure sensor (3); The cover body (4) is provided with two detection openings (5), and the cover body (4) is provided with protective devices at the detection openings (5) for forming a wind curtain wall at the detection openings (5); The cover body (4) is provided with an adsorption device for quickly adsorbing dust and a condensation device for quickly reducing the humidity in the cover body (4), and the protection device controls the operation of the adsorption device; The adsorption device comprises an adsorption column (6) rotatably connected to the cover body (4), an adsorption mechanism arranged on the adsorption column (6), a cleaning mechanism for cleaning dust on the adsorption mechanism, and a power mechanism for controlling the rotation of the adsorption column (6); The protective device comprises an air pump (7), a main pipe (8), a first pipe (9) and a second pipe (10); the main pipe (8) is connected to the air pump (7); the first pipe (9) and the second pipe (10) are respectively connected to two ends of the main pipe (8); the first pipe (9) and the second pipe (10) are both provided with solenoid valves; the first pipe (9) and the second pipe (10) are respectively provided at the two detection ports (5); the first pipe (9) and the second pipe (10) are both adapted to the detection ports (5). The adhesion mechanism comprises two adsorption sheets (11), an electrostatic dust removal paper (12) arranged on the inner wall of the adsorption sheet (11), and an unfolding assembly for controlling the unfolding of the adsorption sheet (11), the electrostatic dust removal paper (12) is adapted to the inner wall of the adsorption sheet (11), the adsorption sheet (11) is rotatably connected to the adsorption column (6), the axis of rotation of the adsorption sheet (11) and the adsorption column (6) is perpendicular to the axis direction of the adsorption column (6), and the adsorption sheet (11) and the adsorption column (6) are elastically connected via a torsion spring; The unfolding assembly comprises an unfolding frame (13) fixedly connected to the outer wall of the cover body (4), an unfolding tube (14) fixed on the unfolding frame (13), an air blowing tube (15) connected to the bottom of the unfolding tube (14), a floating ball (16) floatingly arranged in the unfolding tube (14), an infrared transmitter (17), an infrared receiver (18), a slip ring (19) slidably arranged outside the adsorption column (6), a moving part (20) driving the slip ring (19) to move, two unfolding plates (21) fixed on the slip ring (19) and a retracting part for retracting the adsorption sheet (11), wherein the unfolding assembly comprises: The cylinder (14) is vertically arranged, and the blowing cylinder (15) is horizontally arranged. The cross-sectional area of ​​the blowing cylinder (15) is larger than the cross-sectional area of ​​the unfolding cylinder (14). The infrared transmitter (17) and the infrared receiver (18) are both installed at the bottom of the unfolding cylinder (14) and are respectively located on two symmetrical sides of the central axis of the unfolding cylinder (14). The infrared receiver (18) is electrically connected to the moving part (20). The unfolding plate (21) moves to the outside of the adsorption sheet (11) and limits the unfolding of the adsorption sheet (11). The blowing cylinder (15) is directly opposite to the opening of the first tube (9).

2. A digital composite sensor according to claim 1, characterized in that: The retracting portion comprises a retracting ring (22) slidably arranged at the top end of the adsorption column (6) and a retracting rod (23) for driving the retracting ring (22) to move; the retracting ring (22) controls the adsorption sheet (11) to swing toward the adsorption column (6) during its movement toward the adsorption sheet (11); the retracting rod (23) is slidably arranged on the adsorption column (6), and the cross-sectional circular size of the retracting rod (23) gradually decreases along the direction toward the retracting ring (22).

3. A digital composite sensor according to claim 2, characterized in that: The power mechanism comprises an impeller (24) rotatably connected to the outer wall of the cover body (4), a first bevel gear (25) coaxially fixed to the impeller (24), a second bevel gear (26) meshingly connected to the first bevel gear (25), and a belt (27), wherein the axial direction of the first bevel gear (25) is perpendicular to the axial direction of the second bevel gear (26), the axial direction of the adsorption column (6) is arranged parallel to the axial direction of the second bevel gear (26), the belt (27) is used to connect the rotating shaft of the first bevel gear (25) and the outer wall of the adsorption column (6), and the blades of the impeller (24) are directly opposite to the opening of the second tube (10).

4. A digital composite sensor according to claim 3, characterized in that: The condensation device comprises an exhaust fan (28) for extracting air from the cover body (4), a condensation box (29), a condensation plate (30) and a collection box (31), wherein the output end of the exhaust fan (28) is connected to the condensation box (29), the condensation plate (30) is arranged in the condensation box (29) and installed outside the collection box (31), and the collection box (31) is used to collect condensed water dripping from the condensation plate (30).

5. A digital composite sensor according to claim 4, characterized in that: The cleaning mechanism comprises a sponge member (32), a driving member (33) for controlling the sponge member (32) to move in the direction of the electrostatic dust removal paper (12), a replacement component for replacing the electrostatic dust removal paper (12), and a water supply component for supplying water to the sponge member (32); the adsorption sheet (11) is provided with an inner cavity, the replacement component is arranged in the inner cavity, the sponge member (32) also slides in the inner cavity of the adsorption sheet (11), and the sponge member (32) moves to abut against the side of the electrostatic dust removal paper (12) that adsorbs dust.

6. A digital composite sensor according to claim 5, characterized in that: The water supply assembly comprises a water supply pump, a water supply chamber (35) arranged in the adsorption column (6), a plurality of water supply pipes (36) and a plurality of nozzles (37); the water supply pump is installed in the collection box (31) and is used to pump condensed water into the water supply chamber (35); one end of the water supply pipe (36) is connected to the nozzle (37) and the other end is connected to the water supply chamber (35); the nozzle (37) is directly opposite to the sponge member (32).

7. A digital composite sensor according to claim 6, characterized in that: The wall surface of the cover body (4) is provided with a cooling cavity (38), a cooling pump (39) and a water absorbing member (40); the cooling cavity (38) surrounds the outside of the cover body (4); the cooling pump (39) is arranged at the water inlet of the cooling cavity (38); the cooling pump (39) is connected to two cooling pipes; the cooling pipes are connected to the collecting box (31); the other end of the cooling pipes is connected to the water supply cavity (35); the water absorbing member (40) is arranged at the position of the water outlet of the cover body (4); the water absorbing member (40) is used to absorb the cooling water passing through the cooling cavity (38).

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