CN212963468U - Intelligent evaluation terminal for thermal comfort inside building - Google Patents
Intelligent evaluation terminal for thermal comfort inside building Download PDFInfo
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- CN212963468U CN212963468U CN202022021952.5U CN202022021952U CN212963468U CN 212963468 U CN212963468 U CN 212963468U CN 202022021952 U CN202022021952 U CN 202022021952U CN 212963468 U CN212963468 U CN 212963468U
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Abstract
The utility model discloses an inside thermal comfort intelligent assessment terminal of building, it includes: a single chip module; the air temperature sensor module is connected with the input end of the single chip microcomputer module and is suitable for measuring air temperature data inside a building; the air pressure sensor module is connected with the input end of the single chip microcomputer module and is suitable for measuring air pressure data inside a building; the wind speed sensor module is connected with the input end of the single chip microcomputer module and is suitable for measuring wind speed data inside a building; a humidity sensor module adapted to measure the relative humidity of air inside a building. The utility model provides an inside thermal comfort intelligent assessment terminal of building realizes operation targets such as heating system stability, high efficiency, energy-conservation, environmental protection and accurate heat supply as required.
Description
Technical Field
The utility model relates to an inside thermal comfort intelligent assessment terminal of building belongs to heating system thermal technology and measures the field.
Background
At present, the main purpose of thermal measurement of a heating system is to measure various physical characteristics of a working medium so as to judge whether the working condition of the heating system meets expectations. The condition of winter heat supply generally exists in northern towns in China, but because the interior of a building is lack of a measuring device for feeding back the thermal comfort of a thermal user, the thermal user often generates experience of overheating or supercooling of heat supply, China already sets a set of calculation method for calculating the thermal comfort index of indoor personnel aiming at indoor working environment, the thermal comfort index has important significance for the optimization regulation and energy-saving operation of a heat supply system, the future heat supply system can be automatically regulated according to the thermal comfort index, the indoor heat supply overheating or supercooling is avoided, and meanwhile, the realization of the purposes of stable, high efficiency, energy conservation, environmental protection, accurate heat supply according to requirements and the like of the heat supply system is facilitated. With the development of electronic information technologies such as automatic data acquisition technology, single chip microcomputer technology and the like, automatic systems (including SCADA systems, DCS systems, PLC and the like) are gradually built for town heat supply, traditional manual reading data acquisition and calculation modes are replaced, and indoor thermal parameters such as air temperature, air pressure, air speed and the like are provided with mature measuring devices.
At present, the instrument and device that can be used to measure indoor temperature, atmospheric pressure and wind speed can use temperature sensor, baroceptor and wind speed sensor respectively, however do not have at present to combine the three and carry out the device that indoor thermal comfort calculated, can't carry out effectual quantitative evaluation or feed back to heating system's upper reaches to the effect of indoor heat supply, produce the problem of building overheated or subcooling, and then can't realize the accurate target of heating system's as required.
Disclosure of Invention
The utility model aims to solve the technical problem that, overcome prior art not enough, provided a building inside thermal comfort intelligent assessment terminal, realized that heating system is stable, high-efficient, energy-conserving, environmental protection and operation targets such as accurate heat supply as required.
In order to solve the technical problem, the technical scheme of the utility model is that:
an intelligent evaluation terminal for thermal comfort inside a building, comprising:
a single chip module;
the air temperature sensor module is connected with the input end of the single chip microcomputer module and is suitable for measuring air temperature data inside a building;
the air pressure sensor module is connected with the input end of the single chip microcomputer module and is suitable for measuring air pressure data inside a building;
the wind speed sensor module is connected with the input end of the single chip microcomputer module and is suitable for measuring wind speed data inside a building;
the humidity sensor module is connected with the input end of the single chip microcomputer module and is suitable for measuring the relative humidity of air in the building;
and the data uploading module is connected with the output end of the single chip microcomputer module and is suitable for uploading the measured indoor parameters, the calculated result and the corresponding human body thermal sensation grade to a centralized regulation and control center of the heat supply system through the data uploading module.
Further, the intelligent human body thermal sensing device comprises an external display screen, wherein the external display screen is connected with the output end of the single chip microcomputer module and is suitable for displaying measured indoor parameters, calculation results and corresponding human body thermal sensing grades.
Further, the air temperature sensor module is a thermal resistance thermometer.
Further, the air pressure sensor module is a MEMS pressure sensor.
Further, the wind speed sensor module is a hot wire anemometer.
Further, the humidity sensor module is an alumina hygrometer.
According to the above technical scheme, the utility model discloses utilize one set of hardware equipment simultaneous measurement indoor temperature, atmospheric pressure, wind speed and relative humidity to realize the automatic acquisition and upload of data, the thermal comfort of the indoor heat supply of accurate quantization provides the foundation for heating system's optimization regulation and control.
Drawings
Fig. 1 is a schematic block diagram of the intelligent evaluation terminal for thermal comfort in the interior of a building.
Detailed Description
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.
As shown in fig. 1, the utility model provides an inside thermal comfort intelligence aassessment terminal of building, upload module and external display screen including temperature sensor module, baroceptor module, air velocity transducer module, humidity transducer module, single chip module, data, inside uses the dry battery to be used for each module and singlechip power supply, realizes that automatic acquisition, index calculation, demonstration of data and uploading of data.
As shown in fig. 1, the intelligent evaluation terminal for thermal comfort in the building, for the indoor heating environment, the single chip microcomputer controls the air temperature sensor module, the air pressure sensor module, the wind speed sensor module and the humidity sensor module to automatically acquire indoor parameters at 1 hour acquisition time intervals, the indoor parameters are converted into electronic signals and then transmitted into the single chip microcomputer, the single chip microcomputer calculates the signals and the built-in default parameters required by the calculation of the thermal comfort indexes, the indoor thermal comfort indexes are obtained, then the indoor parameter data, the thermal comfort indexes and the current timestamps are transmitted to the centralized control center of the heating system in a wireless mode, and meanwhile, the current data acquisition results and the thermal comfort results are displayed on an external display screen and are referred by a heating user.
As shown in fig. 1, the thermal comfort index adopts a PMV index in a standard GB/T18049-2017 established by the country, i.e., a Predicted average thermal sensation index, Predicted Mean volume, which classifies the thermal sensation of the human body into 7 grades, as follows:
TABLE 1 seven kinds of heat sensation grade comparison table
| PMV value | Thermal sensation |
| +3 | Heat generation |
| +2 | Heating device |
| +1 | Slightly warm |
| 0 | Is moderate |
| -1 | Slightly cool |
| -2 | Cool down |
| -3 | Cold |
Further, the PMV index is calculated as follows:
wherein,
tcl＝35.7-0.028(M-W)-Icl{3.96×10-8fcl×[(tcl+273)4-(tr+273)1]+fclhc(tcl-ta)}
the symbols in the formula represent the meanings:
PMV — predicted mean heat sensation index;
m-metabolic rate in Watts per square meter (W/M)2)；
W-effective mechanical Power, in Watts per square meter (W/m)2)；
IclClothing thermal resistance in units of square meters per Kelvin watt (m)2K/W)；
fcl-garment surface area factor;
ta-air temperature in degrees centigrade (° c);
var-relative wind speed in meters per second (m/s);
Pa-water vapour partial pressure in Pa (Pa);
hc-convective heat transfer coefficient in units of watts per square meter kelvin [ W/(m)2·K)]；
tclGarment surface temperature in degrees Celsius (. degree. C.).
As shown in fig. 1, the air temperature sensor module of the intelligent evaluation terminal for thermal comfort in the building uses a thermal resistance thermometer, which is used for measuring air temperature data in the building and transmitting an electrical signal generated by the thermal resistance along with the change of temperature to the single chip microcomputer in a wired manner.
As shown in fig. 1, the air pressure sensor module of the intelligent evaluation terminal for thermal comfort in the building uses an MEMS pressure sensor, and is used for measuring air pressure data in the building and transmitting an electrical signal generated by the capacitive pressure sensor along with changes in air pressure to a single chip microcomputer through a wire.
As shown in fig. 1, the wind speed sensor module of the intelligent evaluation terminal for thermal comfort inside a building uses a hot wire anemometer, which is used for measuring wind speed data inside the building, and the principle of the module is that a thin metal wire (called a hot wire) heated by electricity is placed in an air flow, the heat dissipation amount of the hot wire in the air flow is related to the flow velocity, the heat dissipation amount causes the temperature change of the hot wire to cause the resistance change, the flow velocity signal is converted into an electric signal, and the generated electric signal is transmitted to a single chip microcomputer in a wired manner.
As shown in fig. 1, the humidity sensor module of the intelligent evaluation terminal for thermal comfort inside a building uses an alumina hygrometer, which is used for measuring the relative humidity of air inside the building, and the principle of the humidity sensor module is that an alumina film can absorb water from ambient air under the condition of specific relative humidity to cause the change of capacitance and resistance of the alumina film to generate a specific electric signal, and the generated electric signal is transmitted to a single chip microcomputer through a wire.
As shown in fig. 1, since the calculation of the PMV index requires other physical quantities that are not directly measurable, and considering that these physical quantities do not change much in a general context, default values for these parameters can be used and built into the terminal, and then parameters built into the terminal can be modified by a professional at the time of installation as appropriate, these parameters include: metabolic rate M, effective mechanical power W and clothing thermal resistance IclAverage radiation temperature
According to the characteristics of heating in winter in northern towns of China and the standard of one family with three ports, the parameters are set as follows:
TABLE 2 initial values of the built-in parameters
As shown in fig. 1, the single chip module converts the four electrical signals input by the sensors into digital quantities for calculation and output respectively: the electric signal transmitted by the air temperature sensor is converted into an air temperature value, the electric signal transmitted by the air pressure sensor is converted into an air pressure value, the electric signal transmitted by the air speed sensor is converted into an air speed value, and the electric signal transmitted by the humidity sensor is converted into a relative humidity value.
As shown in fig. 1, the single chip microcomputer multiplies the air pressure value by the relative humidity value to obtain the partial pressure of water vapor required for calculating the thermal comfort index, and calculates according to the PMV index calculation method by combining other measured data and other parameters built in the single chip microcomputer or corrected by professional operators to obtain the PMV thermal comfort index in the building, and then converts the thermal comfort index into the human thermal sensation level according to the conversion rule of table 1.
As shown in fig. 1, the measured indoor parameters, the calculation results and the corresponding human body thermal sensation levels are uploaded to a centralized control center of the heat supply system through a data uploading module, and are simultaneously output to an external display screen of the terminal to be presented to a thermal user.
The above-mentioned embodiments further explain in detail the technical problems, technical solutions and advantages solved by the present invention, and it should be understood that the above only is a specific embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. The utility model provides a terminal is evaluateed to inside thermal comfort intelligence of building which characterized in that, it includes:
a single chip module;
the air temperature sensor module is connected with the input end of the single chip microcomputer module and is suitable for measuring air temperature data inside a building;
the air pressure sensor module is connected with the input end of the single chip microcomputer module and is suitable for measuring air pressure data inside a building;
the wind speed sensor module is connected with the input end of the single chip microcomputer module and is suitable for measuring wind speed data inside a building;
the humidity sensor module is connected with the input end of the single chip microcomputer module and is suitable for measuring the relative humidity of air in the building;
and the data uploading module is connected with the output end of the single chip microcomputer module and is suitable for uploading the measured indoor parameters, the calculated result and the corresponding human body thermal sensation grade to a centralized regulation and control center of the heat supply system through the data uploading module.
2. The intelligent evaluation terminal for the thermal comfort inside the building according to claim 1, wherein: the intelligent human body thermal sensation detection device comprises an external display screen, wherein the external display screen is connected with the output end of a single chip microcomputer module, and the external display screen is suitable for displaying measured indoor parameters, calculation results and corresponding human body thermal sensation grades.
3. The intelligent evaluation terminal for the thermal comfort inside the building according to claim 1, wherein: the air temperature sensor module is a thermal resistance temperature measuring instrument.
4. The intelligent evaluation terminal for the thermal comfort inside the building according to claim 1, wherein: the air pressure sensor module is an MEMS pressure sensor.
5. The intelligent evaluation terminal for the thermal comfort inside the building according to claim 1, wherein: the wind speed sensor module is a hot-wire anemometer.
6. The intelligent evaluation terminal for the thermal comfort inside the building according to claim 1, wherein: the humidity sensor module is an alumina hygrometer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022021952.5U CN212963468U (en) | 2020-09-16 | 2020-09-16 | Intelligent evaluation terminal for thermal comfort inside building |
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| CN202022021952.5U CN212963468U (en) | 2020-09-16 | 2020-09-16 | Intelligent evaluation terminal for thermal comfort inside building |
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| CN212963468U true CN212963468U (en) | 2021-04-13 |
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