CN118565565B - Wall-mounted temperature and humidity transmitter - Google Patents
Wall-mounted temperature and humidity transmitter Download PDFInfo
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- CN118565565B CN118565565B CN202411052451.XA CN202411052451A CN118565565B CN 118565565 B CN118565565 B CN 118565565B CN 202411052451 A CN202411052451 A CN 202411052451A CN 118565565 B CN118565565 B CN 118565565B
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- G—PHYSICS
- 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
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- 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
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Abstract
The invention discloses a wall-mounted temperature and humidity transmitter, relates to the technical field of temperature and humidity sensors, and aims to solve the problem that transmission data distortion and poor transmission error compensation effect are caused by overlapping of a characterization error and a collection error of the temperature and humidity sensor. According to the temperature and humidity sensor, the heat insulation box, the second thermometer and the thermometer detection end are arranged, so that the possibility that environmental factors damage the temperature and humidity data transmission accuracy is reduced, and the temperature and humidity sensor transmission robustness performance is improved. Through setting up receiving and dispatching basal portion, light emission end, light receiving end, thermometer detection end and thermometer characterization end, reduced temperature detection data acquisition and to electromagnetic interference resistance, improved the scope and the kind of detecting the adoption of light source. Through setting up sealed spacer sleeve, air permeable membrane cover and light radiation end, reduced temperature and humidity sensor and transmitted the possibility of humiture and actual value deviation.
Description
Technical Field
The invention relates to the technical field of temperature and humidity sensors, in particular to a wall-mounted temperature and humidity transmitter.
Background
The sensor is a device for converting various non-electric quantities into physical quantities which are convenient to process and transmit according to a certain rule, and the temperature and humidity detection modes are various in the field of temperature and humidity sensors; the temperature and humidity detection devices classified according to temperature sensitive materials, humidity sensitive materials or other temperature and humidity reflecting modes are various in types. Because no unique standard is recognized at present, the boundary between the temperature and humidity sensor and the temperature and humidity transmitter is fuzzy, and the temperature and humidity transmitter is classified according to the common technology, so that the temperature and humidity transmitter is more focused on transmitting the detected temperature and humidity parameters into access data.
In the field of actual temperature and humidity detection, different types of temperature and humidity detection devices are selected according to detection precision; among the ordinary wall-mounted temperature and humidity sensors, there are common more economical temperature and humidity detection equipment that has evaporative temperature and humidity sensor. However, in the existing evaporative dry-wet bulb temperature and humidity sensor, there are still many defects in the transmission of temperature and humidity detection parameters, errors generated in the working processes of the dry-wet bulb temperature characterization acquisition stage, the detection data transmission stage and the like are easy to overlap and influence each other, so that temperature and humidity data obtained in the whole temperature and humidity detection process are distorted and difficult to verify and correct, and the transmission accuracy of temperature and humidity data is difficult to ensure by common software compensation.
In the prior art, for example, korean patent No. KR102337284B1 discloses a temperature and humidity measuring apparatus capable of measuring the temperature in a greenhouse, in which a classical dry and wet bulb method is used to detect the temperature and humidity information of ambient air. The dry bulb temperature detection sensor is exposed to the air environment to be detected, and the wet bulb temperature sensor detects the dew point temperature in a conventional wetting capillary core maintaining wetting mode, so that the relative humidity and the temperature parameters in the air to be detected are obtained. In the technical scheme, the wet capillary cores of the dry bulb thermometer and the wet bulb temperature sensor are directly exposed in the detection environment, and as the use time length is increased, the conditions that the temperature detection thermal contact surface of the temperature sensor and the capillary cores possibly adhere to water absorption sundries and the like affect the temperature detection accuracy appear, and the temperature and humidity parameter transmission error of detection can be increased.
For example, korean patent No. KR102316780B1, in which an optical detection device is disposed to recognize the occurrence of frost condensed at a low temperature within the range of condensation of water vapor in fin gaps of a compression condensing device, discloses an apparatus and method for controlling defrosting heating by using optical detection feedback. The optical device is inserted into a pair of optical fiber pairs along the space between the adjacent pair of the plurality of cooling pins, and is provided with optical fiber detection sensors distributed along the length direction of a load on the optical limiting pair, and the condensation state of the water vapor is detected by utilizing the laser point which is excited by a light part and has almost no heating effect; when the laser used by the optical detection device in the technical scheme irradiates and detects, temperature interference is generated on a detection part, and when the detection advantage of the laser is utilized, the problem that the heat factor carried by the laser influences the transmission accuracy of parameter detection possibly exists.
Disclosure of Invention
The invention aims to provide a wall-mounted temperature and humidity transmitter so as to solve the problem that the transmission data is distorted and the transmission error compensation effect is poor due to overlapping of the characterization error and the acquisition error of a temperature and humidity sensor.
In order to solve the technical problems, the invention specifically provides the following technical scheme:
The wall-mounted temperature and humidity transmitter comprises a thermometer characterization end and a second thermometer, wherein one end of the thermometer characterization end is provided with a thermometer detection end, a heat insulation box is arranged between the thermometer detection end and the second thermometer, a humidity reference cavity is arranged in the heat insulation box, the second thermometer is arranged in the humidity reference cavity, and the second thermometer and the thermometer detection end are connected with a data processing center through a circuit;
Through setting up heat-insulating box, second thermometer and thermometer detection end, reduced the possibility that environmental factor destroyed temperature and humidity data transmission accuracy, improved temperature and humidity sensor transmission error's independence, improved temperature and humidity sensor transmission accuracy and temperature and humidity detection's repetition property, improved temperature and humidity sensor and transmitted robust performance.
Preferably, the side surface of the thermometer characterization end is provided with two oppositely arranged receiving and transmitting base parts, one side of the two receiving and transmitting base parts facing the thermometer characterization end is respectively provided with an optical emission end and an optical receiving end, and the thermometer characterization end is positioned on a detection path between the optical emission end and the optical receiving end;
through setting up receiving and dispatching basal portion, light emission end, light receiving end, thermometer detection end and thermometer characterization end, reduced temperature detection data acquisition and to electromagnetic interference resistance, improved the stability that temperature characterization data acquisition was judged, improved the robust performance of humiture transmission, improved the scope and the kind of detecting the adoption of light source.
Preferably, one end of the thermometer characterization end, which faces the thermometer detection end, is fixedly connected with a sealing isolation sleeve, a heat exchange cavity is arranged in the sealing isolation sleeve, an air permeable membrane sleeve is arranged on the lower side of the sealing isolation sleeve, the air permeable membrane sleeve seals a circulation opening of the heat exchange cavity, and the thermometer detection end is positioned in the heat exchange cavity;
through setting up air membrane cover, sealed isolation cover and heat exchange chamber, improved humiture and sent transformer life and maintenance convenience, reduced the influence of attached impurity to temperature transmission detection heat exchange, can further improve temperature transmission ware temperature detection and transmission's robust performance.
Preferably, the side surface of the detection end of the thermometer is provided with an optical radiation end, the optical radiation end is positioned in the heat exchange cavity, and the optical radiation end heats the thermal contact surface of the detection end of the thermometer for detecting the temperature;
Through setting up sealed spacer sleeve, air permeable membrane cover and optical radiation end, can improve temperature sensor heat exchange temperature and detect verification convenience, improve the sensor and carry out temperature detection's the stability of circulation of air, reduced temperature and humidity sensor and transmitted the possibility of humiture and actual value deviation.
Preferably, a humidity sensor is arranged in the humidity reference cavity.
Preferably, a PCB substrate is arranged in the humidity reference cavity, one side of the PCB substrate is fixedly connected with two humidity-sensitive sensors, a gap is reserved between the two humidity-sensitive sensors, and the other side of the PCB substrate is fixedly connected with two heating resistors;
Through setting up humidity sensor, PCB base plate and heating resistor, reduced the overlapping condition of temperature detection error and humidity detection error, reduced the error of humiture transmission benchmark, reduced the possibility that appears relative humidity detects the dead point and appear.
Preferably, the thermometer detection end and the thermometer characterization end are arranged in the detection flow channel, a micro fan is arranged in the detection flow channel, and the micro fan is positioned on the side face of the thermometer detection end.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.
FIG. 1 is a schematic diagram of the overall structure of a wall-mounted temperature and humidity transmitter of the present invention;
FIG. 2 is an enlarged schematic view of a portion of the heat shield 14 of FIG. 1;
FIG. 3 is an enlarged schematic view of a portion of FIG. 1 at A;
FIG. 4 is an enlarged partial schematic view at B in FIG. 2;
FIG. 5 is an enlarged partial schematic view at C in FIG. 3;
FIG. 6 is a partially enlarged schematic illustration of FIG. 3 at D;
fig. 7 is a schematic diagram showing the connection relationship between the capillary wetting wick and the detection end of the thermometer in the third embodiment.
Reference numerals: a thermometer characterization end 11; a thermometer detection end 12; a data processing center 13; a heat insulating box 14; a humidity reference chamber 15; a second thermometer 16; a humidity sensor 17; a PCB substrate 20; a heating resistor 21; a heat conductive plate 22; a transmitting/receiving base 41; a light emitting end 42; a light receiving end 43; a light radiation end 44; a heated layer 45; sealing the spacer 51; a heat exchange chamber 52; an air permeable membrane cover 53; a flow chamber 54; a partition bracket 55; a mounting chassis 56; a detection flow channel 57; a micro fan 58; a wetting water drum 61; the wick 62 is wetted by the capillary.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The concept of the present application will be described with reference to the accompanying drawings. It should be noted that the following descriptions of the concepts are only for making the content of the present application easier to understand, and do not represent a limitation on the protection scope of the present application; meanwhile, the embodiments of the present application and features in the embodiments may be combined with each other without collision. The application will be described in detail below with reference to the drawings in connection with embodiments.
Example 1
Referring to fig. 1 to 3, the invention provides a wall-mounted temperature and humidity transmitter, which comprises a thermometer characterization end 11 and a second thermometer 16, wherein one end of the thermometer characterization end 11 is provided with a thermometer detection end 12, a heat insulation box 14 is arranged between the thermometer detection end 12 and the second thermometer 16, a humidity reference cavity 15 is arranged in the heat insulation box 14, the second thermometer 16 and the thermometer detection end 12 are connected with a data processing center 13 through a circuit, and the heat insulation box 14 isolates temperature transmission between two detection environments of the thermometer detection end 12 and the second thermometer 16;
The thermometer characterization end 11, the thermometer detection end 12, the heat insulation box 14 and the second thermometer 16 are accommodated and installed in the detection flow channel 57, and the micro fan 58 drives the air of the detection environment to circulate to the heat exchange position of the thermometer detection end 12;
The second thermometer 16 can be selected from the CMOS sensor class of temperature sensors to maintain high performance;
The humidity reference cavity 15 provides a constant temperature and humidity environment, the second thermometer 16 derives dew point temperature data in the humidity reference cavity 15 as a relative humidity to calculate a transmitted wet bulb temperature, the temperature detected by the thermometer detection end 12 is used as a dry bulb temperature, the temperature detected by the thermometer detection end 12 is combined with the temperature detected by the second thermometer 16 and the thermometer detection end 12, the data processing center 13 transmits and derives the temperature and relative humidity data flowing in the air in the detection flow channel 57, the heat insulation box 14 can prevent water vapor in the humidity reference cavity 15 from entering an air circulation channel detected by the thermometer detection end 12, the communication of the dry bulb temperature and the wet bulb temperature is avoided, the overlapping state between two temperature detection errors of the dry bulb and the wet bulb is separated, so that the possibility that the heat state and the humidity state of the two temperature detection spaces of the dry bulb are mutually destroyed is reduced, the possibility that environmental factors destroy the accuracy of the temperature and humidity data transmission is reduced, the independence of the transmission errors of the temperature and humidity sensor is improved, the transmission accuracy of the temperature and humidity detection repeatability of the temperature and humidity sensor is improved, the quantity of factors that destroy the temperature and humidity sensor transmission performance is improved.
Referring to fig. 1 and 3, the side surface of the thermometer characterizing end 11 is provided with two opposite receiving and transmitting base parts 41, one side of the two receiving and transmitting base parts 41 facing the thermometer characterizing end 11 is provided with a light emitting end 42 and a light receiving end 43 respectively, the thermometer characterizing end 11 is positioned on a detection path between the light emitting end 42 and the light receiving end 43, and a temperature sensitive characterizing reaction of the thermometer characterizing end 11 can break the detection path between the light emitting end 42 and the light receiving end 43 in a characterizing range;
The receiving and transmitting base 41 is connected with the data processing center 13 through a circuit, the receiving and transmitting base 41 derives the temperature characterization data of the thermometer characterization end 11 collected by the paths of the light receiving end 43 and the light emitting end 42, the light emitting end 42 and the light receiving end 43 are uniformly distributed in the length direction of the thermometer characterization end 11 for characterizing the temperature, and the smaller the distance between two adjacent light emitting ends 42 is, the more accurate the paths of the light emitting end 42 and the light receiving end 43 can detect the temperature data of the thermometer characterization end 11 for characterizing;
The light source excited by the light emitting end 42 can adopt various types of light, the collected temperature value is judged according to the state that the light signals in the passages of the light emitting end 42 and the light receiving end 43 are cut off by the thermometer characterization end 11, the electromagnetic interference resistance of temperature detection data collection is reduced, the stability of temperature characterization data collection judgment is improved, the robustness performance of temperature and humidity transmission is improved, the range and the variety of the detection light source are improved, and the cost of the temperature and humidity transmitter is reduced.
Referring to fig. 3 and 6, a sealing isolation sleeve 51 is fixedly connected to one end, facing the thermometer detection end 12, of the thermometer characterization end 11, a heat exchange cavity 52 is arranged in the sealing isolation sleeve 51, an air permeable membrane sleeve 53 is arranged on the lower side of the sealing isolation sleeve 51, the air permeable membrane sleeve 53 seals a circulation opening of the heat exchange cavity 52, and the thermometer detection end 12 is positioned in the heat exchange cavity 52;
A separation bracket 55 and a mounting chassis 56 are fixedly arranged at the lower end of the sealing isolation sleeve 51, a flow cavity 54 formed by the separation bracket 55 and the mounting chassis 56 is communicated with the heat exchange cavity 52 and is used for accommodating the thermometer detection end 12, a fixed air permeable membrane sleeve 53 is arranged outside the separation bracket 55 which is distributed at intervals between the sealing isolation sleeve 51 and the mounting chassis 56, the heat exchange cavity 52 accommodating the thermometer detection end 12 is isolated from a detection space, and when vapor in the detection space environment enters the heat exchange cavity 52 through the air permeable membrane sleeve 53 and is subjected to heat exchange detection with the thermometer detection end 12, impurities in circulated detection environment air are isolated outside the air permeable membrane sleeve 53;
The air permeable membrane cover 53 can filter and detect impurities in ambient air, prevents the impurities attached to the surface of the thermometer detection end 12 from affecting the temperature and humidity of the heat exchange surface of the thermometer detection end 12, improves the accuracy of heat exchange detection conduction of a temperature and humidity transmitter, prolongs the service life of the temperature and humidity transmitter and improves the maintenance convenience, reduces the influence of the attached impurities on the heat exchange detection of the temperature transmission, and can further improve the robustness of the temperature detection transmission of the temperature and humidity transmitter.
Referring to fig. 1, 3 and 5, the side surface of the thermometer detecting end 12 is provided with an optical radiating end 44, the optical radiating end 44 is located in the heat exchange cavity 52, the optical radiating end 44 heats the thermal contact surface of the thermometer detecting end 12 for detecting temperature, the lower end of the thermometer detecting end 12 is fixedly connected with a heated layer 45, the heated layer 45 is located in a heating path between the optical radiating end 44 and the heating resistor 21, and the heated layer 45 can receive the heat of the optical radiating end 44 for heating and then transfer the heat to the thermometer detecting end 12 in a heat exchange mode, so as to play a role in heat transfer buffering;
The optical radiation end 44 irradiates the surface of the thermometer detection end 12, the optical radiation end 44 irradiates the thermometer detection end 12, the heat exchange temperature state of the thermometer detection end 12 can be destroyed, a temperature fluctuation process of temperature detection verification is provided, the convenience of temperature sensor heat exchange temperature detection verification can be improved, and the convenience of maintenance verification and overhaul of the device is improved;
Meanwhile, in the process of irradiating the heating thermometer detection end 12 by the light radiation end 44, condensate on the surface of the thermometer detection end 12 can be melted in time in a low-temperature environment, so that temperature and humidity detection and transmission can be restarted conveniently, the detection and reset rate of a temperature and humidity transmitter is improved, the application range of the temperature and humidity transmitter is widened, and the temperature and humidity transmission response rate is improved;
In addition, when the light radiation end 44 heats the thermometer detection end 12, the air entering the heat exchange cavity 52 and carrying out heat exchange with the thermometer detection end 12 is heated and expanded, the heat exchange cavity 52 containing the thermometer detection end 12 can be subjected to expansion impact, sundries attached to the outer surface of the air permeable membrane sleeve 53 are partially moved outwards, the cleaning and maintaining effect of the surface of the air permeable membrane sleeve 53 is improved, the possibility of blockage of the heat exchange cavity 52 can be prevented, the stability of air circulation of temperature detection by the sensor is improved, the possibility of deviation between the temperature and humidity transmitted by the temperature and humidity sensor and the actual value is reduced, the error and maintenance frequency of temperature acquisition and detection of the temperature and humidity transmitter are reduced, the service life of the temperature and humidity transmitter is prolonged, the temperature and humidity data transmission stability is improved, and the robustness of the temperature and humidity transmitter is further improved.
Referring to fig. 2 and 4, a humidity sensor 17 is disposed in the humidity reference chamber 15;
humidity is used as an independent detection parameter, and humidity detection and temperature detection in the humidity reference cavity 15 are separated by arranging the humidity sensor 17 in the humidity reference cavity 15, so that the overlapping condition of temperature detection errors and humidity detection errors is reduced, the error of a temperature and humidity transmission reference is reduced, and the accuracy of the transmission value of the temperature and humidity sensor can be further improved.
Referring to fig. 4, a PCB substrate 20 is disposed in the humidity reference cavity 15, one side of the PCB substrate 20 is fixedly connected with two humidity sensors 17, a gap is left between the two humidity sensors 17, the other side of the PCB substrate 20 is fixedly connected with two heating resistors 21, and a heat conducting plate 22 is fixedly connected between the heating resistors 21 and the humidity sensors 17;
The heating resistor 21 can heat the air in the humidity reference cavity 15 to compensate heat loss caused by mechanical conduction, so that the control convenience of temperature and humidity detection in the humidity reference cavity 15 is improved, the temperature control cost is reduced, the difference of the dry and wet ball detection temperature is conveniently provided, and the possibility of occurrence of a relative humidity detection dead point is avoided;
In addition, the heating resistor 21 is used for heating and resetting the humidity detection state of the humidity sensor 17, so that the response stability of the humidity detection of the humidity sensor 17 is improved, the temperature loss caused by the stagnant water quantity of the humidity detection is compensated, the accuracy of the temperature detection is improved, the influence of the humidity detection on temperature transmission is reduced, and the accuracy of temperature and humidity transmission is improved;
In addition, the heating resistors 21 can be arranged near the second thermometer 16 for temperature detection, when local sudden change of temperature is caused by heat compensation of the positions of the two heating resistors 21, before the temperature compensation is stable, the local sudden change of the local air pressure causes local flow of air in the humidity reference cavity 15, so that the air of the second thermometer 16 for heat exchange is disturbed, the temperature detection error caused by the fixation of the air of the temperature detected by the second thermometer 16 is avoided, and the temperature detection accuracy of the second thermometer 16 can be improved.
Example two
The light emitting end 42 emits continuous detection light in the temperature characterization length direction of the thermometer characterization end 11, the light receiving end 43 detects the continuous detection light proportion of the beginning of the thermometer characterization end 11, and the data processing center 13 processes the temperature value of the reaction characterization of the thermometer characterization end 11 led out by the transmitting and receiving base 41 to finish temperature measurement;
the method can improve the continuity of dry bulb temperature detection, reduce the response graduation value of the temperature transmitted by the temperature and humidity sensor, and improve the sensitivity and accuracy of the temperature and humidity sensor transmission response.
Example III
Referring to fig. 7, two identical thermometer detecting ends 12 are used as temperature sensors for dry and wet bulb temperature detection, wherein one thermometer detecting end 12 is used as a dry bulb temperature detecting position, and the thermometer detecting end 12 and the thermometer characterizing end 11 of the dry bulb temperature detecting position are integrally matched with a sealing isolation sleeve 51 and an air permeable membrane sleeve 53 to obtain the dry bulb temperature under the identification detection of an allocated light receiving end 43, a light receiving end 43 and a transmitting and receiving base 41 while preventing the entry of impurities;
The other thermometer detecting end 12 is used for wet bulb temperature detection, at this time, on the basis of the composition used for dry bulb temperature detection, a wet water cylinder 61 is arranged in the lower end wall of the heat exchange cavity 52 formed by the air permeable membrane sleeve 53 and the sealing isolation sleeve 51, distilled water and a capillary wet core 62 are arranged in the wet water cylinder 61, and the capillary wet core 62 and the thermometer detecting end 12 form common wet bulb temperature detection cooperation, so that the number of accessories for wet bulb temperature detection is reduced, improvement on the basis of a common dry and wet bulb temperature sensor is facilitated while good temperature and humidity transmission accuracy and robust performance are maintained, manufacturing difficulty and cost are reduced, and expansion performance of the temperature and humidity sensor is improved.
The above examples and/or embodiments are merely for illustrating the preferred embodiments and/or implementations of the present technology, and are not intended to limit the embodiments and implementations of the present technology in any way, and any person skilled in the art should be able to make some changes or substitutions to other equivalent embodiments without departing from the scope of the technical means disclosed in the present disclosure, and still consider the technology or embodiments substantially identical to the present technology.
The principles and embodiments of the present application have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present application and its core ideas. The foregoing is merely illustrative of the preferred embodiments of this application, and it is noted that there is objectively no limit to the specific structure disclosed herein, since numerous modifications, adaptations and variations can be made by those skilled in the art without departing from the principles of the application, and the above-described features can be combined in any suitable manner; such modifications, variations and combinations, or the direct application of the inventive concepts and aspects to other applications without modification, are contemplated as falling within the scope of the present application.
Claims (2)
1. The wall-mounted temperature and humidity transmitter comprises a thermometer characterization end (11) and a second thermometer (16), wherein a thermometer detection end (12) is arranged at one end of the thermometer characterization end (11), and the wall-mounted temperature and humidity transmitter is characterized in that a heat insulation box (14) is arranged between the thermometer detection end (12) and the second thermometer (16), a humidity reference cavity (15) is arranged in the heat insulation box (14), a second thermometer (16) is arranged in the humidity reference cavity (15), and the second thermometer (16) and the thermometer detection end (12) are connected with a data processing center (13) through a circuit;
the side surface of the thermometer characterization end (11) is provided with two oppositely arranged receiving and transmitting base parts (41), one side of the two receiving and transmitting base parts (41) facing the thermometer characterization end (11) is respectively provided with a light emitting end (42) and a light receiving end (43), and the thermometer characterization end (11) is positioned on a detection path between the light emitting end (42) and the light receiving end (43);
A humidity sensor (17) is arranged in the humidity reference cavity (15);
A PCB substrate (20) is arranged in the humidity reference cavity (15), one side of the PCB substrate (20) is fixedly connected with two humidity-sensitive sensors (17), a gap is reserved between the two humidity-sensitive sensors (17), and the other side of the PCB substrate (20) is fixedly connected with two heating resistors (21);
The heating resistor (21) can be arranged at a position where the second thermometer (16) detects the temperature;
One end of the thermometer characterization end (11) facing the thermometer detection end (12) is fixedly connected with a sealing isolation sleeve (51), a heat exchange cavity (52) is arranged in the sealing isolation sleeve (51), an air permeable membrane sleeve (53) is arranged on the lower side of the sealing isolation sleeve (51), the air permeable membrane sleeve (53) seals a circulation opening of the heat exchange cavity (52), and the thermometer detection end (12) is positioned in the heat exchange cavity (52);
A separation bracket (55) and a mounting chassis (56) are fixedly arranged at the lower end of the sealing isolation sleeve (51), a flow cavity (54) formed by the separation bracket (55) and the mounting chassis (56) is communicated with the heat exchange cavity (52) and is used for accommodating the thermometer detection end (12), an air permeable membrane sleeve (53) is arranged outside the separation bracket (55) which is distributed between the sealing isolation sleeve (51) and the mounting chassis (56) at intervals, the heat exchange cavity (52) accommodating the thermometer detection end (12) is isolated from a detection space, and when vapor in the detection space environment enters the heat exchange cavity (52) through the air permeable membrane sleeve (53) to carry out heat exchange detection with the thermometer detection end (12), impurities in circulated detection environment air are isolated outside the air permeable membrane sleeve (53);
The side of the thermometer detection end (12) is provided with an optical radiation end (44), the optical radiation end (44) is positioned in the heat exchange cavity (52), the optical radiation end (44) heats the thermal contact surface of the thermometer detection end (12) for detecting temperature, the lower end of the thermometer detection end (12) is fixedly connected with a heated layer (45), the heated layer (45) is positioned in a heating path between the optical radiation end (44) and the heating resistor (21), and the heated layer (45) receives heat of the optical radiation end (44) and then transfers heat to the thermometer detection end (12) in a heat exchange mode to play a role of heat transfer buffering.
2. The wall-mounted temperature and humidity transmitter according to claim 1 wherein the thermometer detection end (12) and the thermometer characterization end (11) are disposed in a detection flow channel (57), a micro fan (58) is disposed in the detection flow channel (57), and the micro fan (58) is located at a side surface of the thermometer detection end (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411052451.XA CN118565565B (en) | 2024-08-02 | 2024-08-02 | Wall-mounted temperature and humidity transmitter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411052451.XA CN118565565B (en) | 2024-08-02 | 2024-08-02 | Wall-mounted temperature and humidity transmitter |
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| Publication Number | Publication Date |
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| CN118565565A CN118565565A (en) | 2024-08-30 |
| CN118565565B true CN118565565B (en) | 2024-11-08 |
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| CN202411052451.XA Active CN118565565B (en) | 2024-08-02 | 2024-08-02 | Wall-mounted temperature and humidity transmitter |
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