CN202057623U - Multifunctional temperature and humidity measuring device based on ventilated wet-bulb and dry-bulb process - Google Patents
Multifunctional temperature and humidity measuring device based on ventilated wet-bulb and dry-bulb process Download PDFInfo
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- CN202057623U CN202057623U CN2011201643861U CN201120164386U CN202057623U CN 202057623 U CN202057623 U CN 202057623U CN 2011201643861 U CN2011201643861 U CN 2011201643861U CN 201120164386 U CN201120164386 U CN 201120164386U CN 202057623 U CN202057623 U CN 202057623U
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Abstract
The utility model discloses a device for measuring air temperature and relative humidity, which comprises a fan, a dry-bulb temperature sensor, a wet-bulb temperature sensor, a water storage box, gauze, a signal processing display and the like. The dry-bulb temperature sensor and the wet-bulb temperature sensor which is wrapped by wet gauze are placed in air. The fan enables water on the wet-bulb temperature sensor which is wrapped by the wet gauze to be evenly evaporated. The two temperature sensors and the fan are respectively connected with the signal processing display. Air parameters such as the dry-bulb temperature, the wet-bulb temperature, the relative humidity and the like of air are obtained and displayed by the signal processing display through calculation. Each of the dry-bulb temperature sensor and the wet-bulb temperature sensor consists of a thermistor which is encapsulated by plastics. Therefore, the device has strong capacities of resisting the impacts of dust, oily dirt and harmful gases, the service life is long and the stability is very good. The fan can provide high ventilation speed to ensure that the humidity can be measured more rapidly and correctly.
Description
Technical field:
The utility model relates to a kind of device based on ventilated type measurement with wet measurement air themperature, humidity, mainly is made up of blower fan, dry-bulb temperature sensor, wet bulb temperature sensor, signal Processing display etc.
Technical background:
The measurement of temperature and humidity has important application in departments such as industrial and agricultural production, meteorology, environmental protection, national defence, scientific research, space flight.Textile industry, humiture is the key factor that influences quality of textile products, and temperature, humidity that warmhouse booth need suit are planted, and grain storage has also proposed to compare higher requirement to the humiture observation and control technology, in the long-distance transport process, need carry out temperature and humidity measurement and control to the product of accumulating.All trades and professions such as bio-pharmaceuticals, clean room, telecommunications bank, library, archives, historical relic shop, intelligent building all need the humiture monitoring.
In temperature, moisture measurement, temperature is individual independently measured, and humidity is subjected to the influence of atmospheric pressure, temperature etc.Common humidity measuring method has: dynamic method, static method, dew point method, measurement with wet and electronic sensor method etc.Wherein dynamic method is based on thermodynamics P, V, T equilibrium principle, but the equipment complexity, costliness is mainly as the usefulness of standard metering; Saturated salt method in the static method, the balance of liquid, gas two-phase is required very tight, higher to the stability requirement of environment temperature, need the equilibration time of several hrs, can not use immediately; The dew point method measuring equipment costs an arm and a leg, the normal and supporting use of standard humidity generator.Based on the humidity measuring instrument of above method because the device structure complexity, cost an arm and a leg, inconvenient operation, be mainly used in the laboratory or the occasion of special requirement arranged.Electronic type humidity sensor commonly used in use is subjected to the influence of dust, greasy dirt and harmful gas easily, and serviceable life is short.
Summary of the invention:
The purpose of the present utility model is, proposes that a kind of volume is little, simple to operate, antipollution strong, the ventilated type measurement with wet of good stability numeral humiture measurement mechanism, and Measuring Time is short, simple in structure, cost is low.
For achieving the above object, the utility model device is made up of blower fan, dry-bulb temperature sensor and wet bulb temperature sensor, water storage case, gauze, signal Processing display etc., it is characterized in that: dry-bulb temperature sensor and be placed in the air by the wet bulb temperature sensor that wet gauze wraps up, be respectively applied for dry-bulb temperature and the wet-bulb temperature of measuring air, blower fan is evaporated the moisture on the wet bulb temperature sensor that is wrapped up by wet gauze fully.Two temperature sensors are connected with the signal Processing display respectively with blower fan.During use, the signal Processing display sends control signal to blower fan and ventilates, dry-bulb temperature sensor and wet bulb temperature sensor are sent to the signal Processing display with dry-bulb temperature value and the wet-bulb temperature value that measures respectively,, obtain the air parameter such as dry-bulb temperature, wet-bulb temperature, relative humidity of air and shown through calculating by the signal Processing display.
The multi-functional humiture device of ventilated type measurement with wet as described above is characterized in that, dry-bulb temperature sensor and wet bulb temperature sensor are that the thermistor of outer package constitutes by plastics, and are fixed on the Temperature Humidity Sensor enclosure interior.
The multi-functional humiture device of ventilated type measurement with wet as described above is characterized in that the signal Processing display is made up of voltage-frequency converting circuit, display circuit, RS-232 change-over circuit, single chip computer measurement control circuit, power supply.
The multi-functional humiture device of ventilated type measurement with wet as described above, it is characterized in that, air humidity be by single-chip microcomputer according to the dry-bulb temperature of measuring air and the wet-bulb temperature relative humidity by calculating air, the measurement of humidity is converted to the measurement of temperature.And dry-bulb temperature sensor and wet bulb temperature sensor are to be that the thermistor of outer package constitutes by plastics are arranged, and therefore, the ability of resisting dust, greasy dirt and harmful gas influence is strong, long service life, and stability is very good.
The multi-functional humiture device of ventilated type measurement with wet as described above is characterized in that, provides big ventilation speed by blower fan, and the measurement that makes humidity is more rapidly with correct.
Description of drawings:
Fig. 1, be structural drawing of the present utility model;
Fig. 2, be signal Processing display figure of the present utility model.
Embodiment:
By shown in Figure 1, dry-bulb temperature sensor 3 is measured the dry-bulb temperature of air, and wet bulb temperature sensor 4 is measured the wet-bulb temperature of air.Blower fan 2 provides the air of circulation, and water storage case 6 provides moisture evaporated.During use, signal Processing display 12 is by interface 11, lead 10, interface 9, and control blower fan 2 rotates, tested air is entered by air inlet port 5, air outflow port 8 is discharged, and water storage case 6 provides evaporation required moisture by gauze 7, and wet bulb temperature sensor 4 is wrapped in the middle of the gauze 7.Dry-bulb temperature sensor 3 is measured the dry-bulb temperature value of air, and wet bulb temperature sensor 4 is measured the wet-bulb temperature value of air, and under the effect of moving air, wet bulb temperature sensor 4 fast, correctly measures the wet-bulb temperature of air.The signal Processing display obtains the dry-bulb temperature and the wet-bulb temperature value of air by interface 11, lead 10, interface 9, through calculating air parameters such as the dry-bulb temperature that obtains air, wet-bulb temperature, relative humidity.
By shown in Figure 2,3 is dry-bulb temperature sensor, 4 is wet bulb temperature sensor, A1, A2 are the voltage-frequency converter ic, A3 is the AT89 Series chip, and A4 is for being character liquid crystal display, and A5 is a system power supply, A6 is a RS-232 serial communication integrated circuit, and A7 is the blower fan drive integrated circult.
The dry-bulb temperature metering circuit is made up of dry-bulb temperature sensor 3, voltage-frequency converter ic A1, the dry-bulb temperature value of air is converted to correspondent frequency signal P1, and the wet-bulb temperature metering circuit converts the wet-bulb temperature value of air to correspondent frequency signal P2 by wet bulb temperature sensor 4, voltage-frequency converter ic A2.Frequency signal P1, P2 are input in the Chip Microcomputer A 3, by the computing of internal processes, calculate relative humidity and other parameters of air, show needed measurement data by character liquid crystal display A4.A5 is a system power supply, and the operating voltage of signal Processing display 12 is provided.A6 is a RS-232 serial communication integrated circuit, and ventilated type measurement with wet humiture device and extraneous communicating by letter are provided.A7 is the blower fan drive integrated circult, and the operating voltage of blower fan 2 is provided.
Claims (4)
1. the multi-functional humiture device of ventilated type measurement with wet, it is made up of humiture pick-up unit housing (1), interface (9), lead (10), interface (11), signal Processing display (12), and blower fan (2), dry-bulb temperature sensor (3), wet bulb temperature sensor (4), water storage case (6), an end wrap wet bulb temperature sensor (4) at the inner other end of water storage case (6) gauze (7) is installed in housing (1) inside.
2. the multi-functional humiture device of ventilated type measurement with wet according to claim 1 is characterized in that: the two ends of humiture pick-up unit housing (1) are provided with air inlet (5), air outlet (8).
3. the multi-functional humiture device of ventilated type measurement with wet according to claim 1 is characterized in that: humiture pick-up unit housing (1) links together with lead (10), signal Processing display (12) by interface (9), interface (11).
4. the multi-functional humiture device of ventilated type measurement with wet according to claim 1 is characterized in that: signal Processing display (12) is made up of dry-bulb temperature sensor (3), wet bulb temperature sensor (4), dry-bulb temperature converter (A1), wet-bulb temperature converter (A2), single-chip microcomputer (A3), digital indicator (A4), power supply (A5), RS-232 communication module (A6), blower fan drive integrated circult (A7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201643861U CN202057623U (en) | 2011-05-23 | 2011-05-23 | Multifunctional temperature and humidity measuring device based on ventilated wet-bulb and dry-bulb process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201643861U CN202057623U (en) | 2011-05-23 | 2011-05-23 | Multifunctional temperature and humidity measuring device based on ventilated wet-bulb and dry-bulb process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202057623U true CN202057623U (en) | 2011-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011201643861U Expired - Fee Related CN202057623U (en) | 2011-05-23 | 2011-05-23 | Multifunctional temperature and humidity measuring device based on ventilated wet-bulb and dry-bulb process |
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| CN (1) | CN202057623U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267706A (en) * | 2013-04-27 | 2013-08-28 | 中国矿业大学(北京) | Portable air density tester for mine |
| CN103439361A (en) * | 2013-08-30 | 2013-12-11 | 广州赛宝计量检测中心服务有限公司 | Standard ventilation psychrometer |
| CN107228444A (en) * | 2017-06-26 | 2017-10-03 | 广东美的制冷设备有限公司 | Humidification device and its control method |
| CN107966475A (en) * | 2017-12-23 | 2018-04-27 | 湖南元亨科技股份有限公司 | A kind of wet-and-dry-bulb thermometer |
-
2011
- 2011-05-23 CN CN2011201643861U patent/CN202057623U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267706A (en) * | 2013-04-27 | 2013-08-28 | 中国矿业大学(北京) | Portable air density tester for mine |
| CN103267706B (en) * | 2013-04-27 | 2015-03-11 | 中国矿业大学(北京) | Portable air density tester for mine |
| CN103439361A (en) * | 2013-08-30 | 2013-12-11 | 广州赛宝计量检测中心服务有限公司 | Standard ventilation psychrometer |
| CN107228444A (en) * | 2017-06-26 | 2017-10-03 | 广东美的制冷设备有限公司 | Humidification device and its control method |
| CN107966475A (en) * | 2017-12-23 | 2018-04-27 | 湖南元亨科技股份有限公司 | A kind of wet-and-dry-bulb thermometer |
| CN107966475B (en) * | 2017-12-23 | 2024-02-27 | 湖南元亨科技股份有限公司 | Dry and wet ball thermometer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20130523 |