CN112781649A - Temperature and humidity measuring device based on NB wireless transmission - Google Patents
Temperature and humidity measuring device based on NB wireless transmission Download PDFInfo
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- CN112781649A CN112781649A CN202011560129.XA CN202011560129A CN112781649A CN 112781649 A CN112781649 A CN 112781649A CN 202011560129 A CN202011560129 A CN 202011560129A CN 112781649 A CN112781649 A CN 112781649A
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- temperature
- humidity
- heat preservation
- wireless transmission
- moisture
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 21
- 239000010902 straw Substances 0.000 claims abstract description 29
- 238000005259 measurement Methods 0.000 claims abstract description 20
- 238000005070 sampling Methods 0.000 claims abstract description 9
- 238000009413 insulation Methods 0.000 claims description 35
- 238000004321 preservation Methods 0.000 claims description 20
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 238000009529 body temperature measurement Methods 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 description 7
- 241000209140 Triticum Species 0.000 description 4
- 235000021307 Triticum Nutrition 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a temperature and humidity measuring device based on NB wireless transmission, which comprises a heat-insulating and moisture-insulating shell, wherein a temperature and humidity sensor and an air speed sensor are arranged in the heat-insulating and moisture-insulating shell, the air speed sensor is arranged on the right side of the temperature and humidity sensor, a sampling fan is arranged on the right side in the heat-insulating and moisture-insulating shell, a straw rectifier is arranged at the lower end of the heat-insulating and moisture-insulating shell, an NB wireless module is arranged at the lower end of the sampling fan, a power supply and a control module are arranged at the lower end of the NB wireless module, and the straw rectifier consists of a front-end straw and a rear-. This temperature and humidity measurement device based on NB wireless transmission, the device can avoid under the low temperature environment because the air flow rate is low excessively causes temperature and humidity measurement inaccurate and have the deployment convenience based on NB wireless transmission around the sensor.
Description
Technical Field
The invention relates to the technical field of temperature and humidity measurement, in particular to a temperature and humidity measurement device based on NB wireless transmission.
Background
Under low ambient temperature conditions such as a refrigeration house, the temperature and humidity of the refrigeration house are the most important measurement and control parameters. In the traditional temperature and humidity measurement in low-temperature environments such as a refrigeration house, a wired temperature and humidity sensor is directly deployed at a specified position of the refrigeration house to measure the temperature and the humidity.
At present, most evaporators of refrigeration house refrigeration systems adopt calandria as evaporators, the air flow rate in the refrigeration house of the calandria evaporators is generally less than 1m/s, and temperature and humidity sensors adopt armored platinum resistors to measure the temperature. Research shows that the armored platinum resistor temperature and humidity sensor has high thermal resistance at low air flow rate, so that the measured temperature and humidity value deviates from the actual value, and the temperature and humidity change response is slow. Meanwhile, the temperature and humidity sensor deployed in a limited mode cannot be rapidly deployed and moved.
In order to solve the technical defects, a temperature and humidity measuring device based on NB wireless transmission is provided.
Disclosure of Invention
Aiming at the defects of the background art, the invention provides a temperature and humidity measuring device based on NB wireless transmission, which solves the problems provided by the background art.
The invention provides the following technical scheme: the utility model provides a temperature and humidity measurement device based on NB wireless transmission, separates wet casing including keeping warm, the internally mounted that keeps warm and separates wet casing has temperature and humidity sensor and air velocity transducer, and air velocity transducer sets up in temperature and humidity sensor's right side, the inside right side that keeps warm and separates wet casing is provided with the sample fan, and the lower extreme that just keeps warm and separate wet casing is provided with the straw rectifier, the lower extreme of sample fan is provided with NB wireless module, and NB wireless module's lower extreme installs power and control module, the straw rectifier comprises front end straw and rear end straw.
Preferably, the heat-insulating and moisture-insulating shell is used for the measured air to pass through, the straw rectifier is fixed at the inlet at the front end of the heat-insulating and moisture-insulating shell, the temperature and humidity sensor is fixed in the heat and humidity insulation shell by adopting an MEMS packaging chip and is close to one end of the heat and humidity insulation shell where the air to be detected enters, the surface of the wind speed sensor is smooth, the wind speed sensor is fixed in the heat-insulation and moisture-insulation shell and is close to the temperature and humidity sensor, the rear-end straw is fixed at the inlet of the front end of the heat-insulation and moisture-insulation shell, which is used for improving the uniformity of air, the NB wireless module is fixed above the heat-insulating and moisture-insulating shell, the device is used for transmitting measured temperature and relative humidity data to a data receiving end, the sampling fan is fixed at the other port of the heat-preservation and moisture-insulation shell behind the rear-end straw, and the power supply and the control module are fixed below the heat-preservation and moisture-insulation shell.
Preferably, the measured air flow velocity through the temperature and humidity sensor is a, and a is 4.5 ± 0.5 m/s.
Preferably, the temperature and humidity sensor is an MEMS temperature and humidity chip.
Preferably, the front and back arrangement of the straws enables the air temperature uniformity to be better than 0.1 ℃.
Preferably, the NB wireless module is adopted to remotely transmit the test data.
Preferably, the whole device is supplied with power by adopting a power module with a detachable lithium battery.
Preferably, the temperature measurement accuracy of the temperature and humidity sensor is better than +/-0.2 ℃, and the measurement accuracy of the relative humidity sensor is better than +/-5% RH.
The invention has the following beneficial effects: according to the temperature and humidity measuring device based on NB wireless transmission, air to be measured firstly passes through the wheat pipe to rectify the air, then passes through the temperature sensor and the wind speed sensor, and then the rear end wheat pipe is rectified again and then passes through 1 fan. The air firstly passes through the wheat pipe, so that the uniformity of the dry and wet bulb temperature of the air is better than 0.1 ℃, and then the air is rectified by the wheat pipe again to prevent the influence of the vortex of the rear-end fan on the uniformity of the temperature and the humidity by measuring the dry bulb temperature and the relative humidity. The invention avoids the influence of the air flow velocity and the thermal resistance of the sensor on the temperature and humidity measurement, thereby obtaining higher temperature and humidity measurement accuracy. The NB wireless module and the self-contained power supply of the device facilitate the rapid deployment and the environmental adaptability of the device.
Drawings
Fig. 1 is a schematic view of an overall structure of a temperature and humidity measuring device based on NB wireless transmission according to the present invention;
FIG. 2 is a flow chart of the present invention;
in the figure: 1. a heat-insulating and moisture-insulating shell; 2. a straw rectifier; 3. a temperature and humidity sensor; 4. a wind speed sensor; 5. a sampling fan; 6. an NB radio module; 7. power and control module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The drawings in the embodiments of the invention: the different types of hatching in the figures are not given the national standards, do not require the material of the elements, and distinguish between cross-sectional views of the elements in the figures.
Referring to fig. 1-2, a humiture measuring device based on NB wireless transmission includes a heat-insulating and moisture-insulating casing 1, a humiture sensor 3 and an air velocity sensor 4 are installed inside the heat-insulating and moisture-insulating casing 1, the air velocity sensor 4 is disposed on the right side of the humiture sensor 3, a sampling fan 5 is disposed on the right side inside the heat-insulating and moisture-insulating casing 1, a straw rectifier 2 is disposed at the lower end of the heat-insulating and moisture-insulating casing 1, an NB wireless module 6 is disposed at the lower end of the sampling fan 5, a power supply and control module 7 is installed at the lower end of the NB wireless module 6, and the straw rectifier 2 is composed of a front-end straw and a rear-end straw.
The heat-insulating and moisture-insulating shell 1 is used for the tested air to pass through, the straw rectifier 2 is fixed at the inlet of the front end of the heat-insulating and moisture-insulating shell 1, the temperature and humidity sensor 3 is fixed in the heat and humidity insulation shell 1 by adopting an MEMS packaging chip and is close to one end of the heat and humidity insulation shell 1 where the air to be measured enters, the surface of the wind speed sensor is smooth, the wind speed sensor 4 is fixed in the heat-insulation and moisture-insulation shell 1 and is close to the temperature and humidity sensor 3, the rear-end straw is fixed at the inlet of the front end of the heat-insulation and moisture-insulation shell 1, which is used for improving the uniformity of air, the NB wireless module 6 is fixed above the heat-preservation and moisture-insulation shell 1, the device is used for transmitting measured temperature and relative humidity data to a data receiving end, the sampling fan 5 is fixed at the other port of the heat-preservation and moisture-insulation shell behind the rear-end straw, and the power supply and control module 7 is fixed below the heat-preservation and moisture-insulation shell.
The measured air flow velocity through the temperature and humidity sensor 3 is a, and a is 4.5 ± 0.5 m/s.
The temperature and humidity sensor 3 is an MEMS temperature and humidity chip.
The front and back arrangement of the straws ensures that the uniformity of the air temperature is better than 0.1 ℃.
And the NB wireless module 6 is adopted to remotely transmit the test data.
The whole device is supplied with power by adopting a power module with a detachable lithium battery.
The temperature measurement precision of the temperature and humidity sensor 3 is better than +/-0.2 ℃, and the measurement precision of the relative humidity sensor is better than +/-5% RH.
It should be noted that, as shown in fig. 1, an arrow in the figure indicates a flowing direction of air to be measured, the temperature and humidity measuring device for measuring temperature and humidity of air according to the present invention includes:
the heat-insulating and moisture-insulating shell 1 is used for allowing air to be measured to pass through; the shell is in a cylindrical or cuboid shape and can be manufactured according to actual conditions, but the shell is made of heat-insulating and moisture-insulating materials. The heat insulation material generally refers to a material with a heat conductivity coefficient less than or equal to 0.05W/mK;
the straw rectifier 2 is fixed in the heat-insulating and moisture-insulating shell 1 at the front and the rear of the temperature and humidity sensor and is used for improving the uniformity of air temperature;
the temperature sensor 3 is fixed in the heat-insulation and moisture-insulation shell 1, is close to one end of the heat-insulation and moisture-insulation shell 1 where the air to be detected enters, and has a smooth surface;
the sampling fan 5 is fixed at the other port of the heat-preservation and moisture-insulation shell 1 behind the dew point temperature sensor 5;
the NB wireless module 6 is fixed at the other port of the heat-preservation and moisture-insulation shell 1 and is used for wireless transmission of data;
and the power supply and control module 7 is fixed at the other port of the heat-insulation and moisture-insulation shell 1 and is used for supplying power to the device.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a temperature and humidity measurement device based on NB wireless transmission, includes heat preservation and moisture insulation casing (1), its characterized in that: the utility model discloses a solar heat preservation and humidity control device, including heat preservation and humidity insulation shell (1), internally mounted has temperature and humidity sensor (3) and air velocity transducer (4), and air velocity transducer (4) set up in the right side of temperature and humidity sensor (3), the inside right side that the heat preservation separates humidity shell (1) is provided with sample fan (5), and the lower extreme that the heat preservation separates humidity shell (1) is provided with straw rectifier (2), the lower extreme of sample fan (5) is provided with NB wireless module (6), and the lower extreme of NB wireless module (6) installs power and control module (7), straw rectifier (2) comprise front end straw and rear end straw.
2. The temperature and humidity measurement device based on NB wireless transmission of claim 1, characterized in that: the heat preservation and moisture insulation shell (1) is used for allowing measured air to pass through, the straw rectifier (2) is fixed at the front end inlet of the heat preservation and moisture insulation shell (1) and used for improving the uniformity of air, the temperature and humidity sensor (3) adopts an MEMS packaging chip to be fixed in the heat preservation and moisture insulation shell (1), the rear end straw is fixed at the front end inlet of the heat preservation and moisture insulation shell (1) and used for improving the uniformity of air, the surface of the temperature and humidity sensor is smooth surface, the wind speed sensor (4) is fixed in the heat preservation and moisture insulation shell (1) and is close to the temperature and humidity sensor (3), the rear end straw is fixed at the front end inlet of the heat preservation and moisture insulation shell (1) and used for improving the uniformity of air, the NB wireless module (6) is fixed above the heat preservation and moisture insulation shell (1) and used for transmitting measured temperature and relative humidity data to a data receiving end, the sampling fan (5) is fixed at the other port, and the power supply and control module (7) is fixed below the heat-preservation and moisture-insulation shell.
3. The temperature and humidity measurement device based on NB wireless transmission of claim 1, characterized in that: the measured air flow velocity passing through the temperature and humidity sensor (3) is a, and a is 4.5 +/-0.5 m/s.
4. The temperature and humidity measurement device based on NB wireless transmission of claim 1, characterized in that: the temperature and humidity sensor (3) is an MEMS temperature and humidity chip.
5. The temperature and humidity measurement device based on NB wireless transmission of claim 1, characterized in that: the front and back arrangement of the straws ensures that the uniformity of the air temperature is better than 0.1 ℃.
6. The temperature and humidity measurement device based on NB wireless transmission of claim 1, characterized in that: and the NB wireless module (6) is adopted to remotely transmit the test data.
7. The temperature and humidity measurement device based on NB wireless transmission of claim 1, characterized in that: the whole device is supplied with power by adopting a power module with a detachable lithium battery.
8. The temperature and humidity measurement device based on NB wireless transmission of claim 1, characterized in that: the temperature measurement precision of the temperature and humidity sensor (3) is better than +/-0.2 ℃, and the measurement precision of the relative humidity sensor is better than +/-5% RH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011560129.XA CN112781649A (en) | 2020-12-25 | 2020-12-25 | Temperature and humidity measuring device based on NB wireless transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011560129.XA CN112781649A (en) | 2020-12-25 | 2020-12-25 | Temperature and humidity measuring device based on NB wireless transmission |
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| Publication Number | Publication Date |
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| CN112781649A true CN112781649A (en) | 2021-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011560129.XA Pending CN112781649A (en) | 2020-12-25 | 2020-12-25 | Temperature and humidity measuring device based on NB wireless transmission |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068577A (en) * | 2015-07-18 | 2015-11-18 | 陈鸽 | Temperature controller not influenced by heat generated by control circuit |
| CN209117713U (en) * | 2018-12-24 | 2019-07-16 | 沈阳阿尔特科技发展有限公司 | A kind of modified airspeedometer of self-heating temperature |
| CN210573399U (en) * | 2019-09-11 | 2020-05-19 | 国家电投集团远达环保催化剂有限公司 | Flue gas rectifying device for catalyst pilot test performance detection equipment |
| CN111443107A (en) * | 2020-05-13 | 2020-07-24 | 上海佐竹冷热控制技术有限公司 | Temperature and humidity measuring device and measuring method |
| CN212060136U (en) * | 2020-03-11 | 2020-12-01 | 广东惠和工程检测有限公司 | VOC release amount environment test case |
-
2020
- 2020-12-25 CN CN202011560129.XA patent/CN112781649A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068577A (en) * | 2015-07-18 | 2015-11-18 | 陈鸽 | Temperature controller not influenced by heat generated by control circuit |
| CN209117713U (en) * | 2018-12-24 | 2019-07-16 | 沈阳阿尔特科技发展有限公司 | A kind of modified airspeedometer of self-heating temperature |
| CN210573399U (en) * | 2019-09-11 | 2020-05-19 | 国家电投集团远达环保催化剂有限公司 | Flue gas rectifying device for catalyst pilot test performance detection equipment |
| CN212060136U (en) * | 2020-03-11 | 2020-12-01 | 广东惠和工程检测有限公司 | VOC release amount environment test case |
| CN111443107A (en) * | 2020-05-13 | 2020-07-24 | 上海佐竹冷热控制技术有限公司 | Temperature and humidity measuring device and measuring method |
Non-Patent Citations (1)
| Title |
|---|
| 成刚: "《一本读懂智能家居核心技术》", 31 January 2020 * |
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Application publication date: 20210511 |