CN204065888U - For the temperature and humidity controller of constant temperature and moisture test room - Google Patents
For the temperature and humidity controller of constant temperature and moisture test room Download PDFInfo
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- CN204065888U CN204065888U CN201420593715.8U CN201420593715U CN204065888U CN 204065888 U CN204065888 U CN 204065888U CN 201420593715 U CN201420593715 U CN 201420593715U CN 204065888 U CN204065888 U CN 204065888U
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Abstract
For the temperature and humidity controller of constant temperature and moisture test room, belong to metering experiment field, the utility model is for solving the expensive problem of existing large-scale constant temperature and humidity system.The utility model comprises temperature sensor, humidity sensor, controller, well heater, fan, humidifier, temperature indicator and wetness; Controller comprises temperature control unit and humidity controlling unit; Temperature sensor gathers the temperature signal in laboratory; Humidity sensor gathers the moisture signal in laboratory; Temperature indicator is used for displays temperature value; The heating instructions output terminal of temperature control unit is connected with the heating instructions input end of well heater; The cooling instruction output end of temperature control unit is connected with the cooling command input of fan; Wetness is for showing humidity value; The humidification instruction output end of humidity controlling unit is connected with the humidification command input of humidifier; The wet down instruction output end of humidity controlling unit is connected with the wet down command input of fan.
Description
Technical field
The utility model relates to constant temperature and humidity control device, belongs to metering experiment field.
Background technology
From the 1950's, China is just using 20 DEG C as reference standard temperature, so far do not become, when metering field carries out testing or examining and determine, 20 DEG C ± X DEG C is decided to be to the temperature requirement of working environment, this has become the system of metering industry, between general detection and the temperature requirement of test bay at 20 DEG C ± 5 DEG C, require to be 20 DEG C ± 2 DEG C between line value measurement standard, it is 20 DEG C ± 3 DEG C between the gauge check instrument that the standard room lambda line value of electrician and radio specialty is measured, relative temperature in laboratory requires to remain on 50 ~ 70%, if the humiture in laboratory exceedes specialized range, then can affect its testing result.
Existing constant temperature and humidity system mostly adopts large-scale refrigeration, heats, humidification system, and system architecture is complicated, and expensive, common laboratory adopts this large scale system to have very large financial burden.
Summary of the invention
The utility model object is to solve the expensive problem of existing large-scale constant temperature and humidity system, providing a kind of temperature and humidity controller for constant temperature and moisture test room.
Temperature and humidity controller for constant temperature and moisture test room described in the utility model, it comprises temperature sensor, humidity sensor, controller, well heater, fan, humidifier, temperature indicator and wetness; Controller comprises temperature control unit and humidity controlling unit; The temperature signal output terminal of temperature sensor is connected with the temperature signal input of temperature control unit; The moisture signal output terminal of humidity sensor is connected with the moisture signal input end of humidity controlling unit;
The Temperature displaying signal output part of temperature control unit is connected with the display input end of temperature indicator; The heating instructions output terminal of temperature control unit is connected with the heating instructions input end of well heater; The cooling instruction output end of temperature control unit is connected with the cooling command input of fan;
The humidity display signal output part of humidity controlling unit is connected with the display input end of wetness; The humidification instruction output end of humidity controlling unit is connected with the humidification command input of humidifier; The wet down instruction output end of humidity controlling unit is connected with the wet down command input of fan.
Advantage of the present utility model: grade separation is pressed in the laboratory of metering field, large-scale constant temperature and humidity system is adopted to the high-grade laboratory of accuracy requirement, the inferior grade laboratory not high to accuracy requirement adopts easy device of the present utility model, the financial burden in the laboratory so just significantly reduced, temperature and humidity controller structure for constant temperature and moisture test room described in the utility model is simple, and the ability that temperature control, control wet can meet the requirement of small-size laboratory completely.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the temperature and humidity controller for constant temperature and moisture test room described in the utility model;
Fig. 2 is the circuit theory diagrams of the temperature and humidity controller for constant temperature and moisture test room described in the utility model.
Embodiment
Embodiment one: present embodiment is described below in conjunction with Fig. 1 and Fig. 2, for the temperature and humidity controller of constant temperature and moisture test room described in present embodiment, it comprises temperature sensor 1, humidity sensor 2, controller 3, well heater 6, fan 7, humidifier 8, temperature indicator 4 and wetness 5; Controller 3 comprises temperature control unit 3-1 and humidity controlling unit 3-2; The temperature signal output terminal of temperature sensor 1 is connected with the temperature signal input of temperature control unit 3-1; The moisture signal output terminal of humidity sensor 2 is connected with the moisture signal input end of humidity controlling unit 3-2;
The Temperature displaying signal output part of temperature control unit 3-1 is connected with the display input end of temperature indicator 4; The heating instructions output terminal of temperature control unit 3-1 is connected with the heating instructions input end of well heater 6; The cooling instruction output end of temperature control unit 3-1 is connected with the cooling command input of fan;
The humidity display signal output part of humidity controlling unit 3-2 is connected with the display input end of wetness 5; The humidification instruction output end of humidity controlling unit 3-2 is connected with the humidification command input of humidifier 8; The wet down instruction output end of humidity controlling unit 3-2 is connected with the wet down command input of fan 7.
Temperature sensor 1 adopts DB1620 temperature sensor to realize, and humidity sensor 2 adopts IH3605 humidity sensor to realize, and temperature indicator 4 and wetness 5 all adopt LCD gauge outfit to realize;
Described temperature control unit comprises resistance R1, resistance R2, resistance R3, resistance R4, diode VD1, diode VD2, LED 1, LED 2, NPN triode VT1, NPN triode VT2, auxiliary reclay K1 and auxiliary reclay K2; + 5V direct supply connects one end of 1 pin of DB1620 temperature sensor, the positive pole power supply terminal of temperature LCD gauge outfit, one end of resistance R3, the negative electrode of diode VD1, one end of auxiliary reclay K1 coil, one end of resistance R4, the negative electrode of diode VD2 and auxiliary reclay K2 coil simultaneously;
One end of 7 pin contact resistance R1 of DB1620 temperature sensor, the other end of resistance R1 connects the base stage of NPN triode VT1, and the collector of NPN triode VT1 is the negative electrode of connecting luminous diode LED1, the anode of diode VD1 and the other end of auxiliary reclay K1 coil simultaneously; The other end of the anode contact resistance R3 of LED 1;
One end of 6 pin contact resistance R2 of DB1620 temperature sensor, the other end of resistance R2 connects the base stage of NPN triode VT2, and the collector of NPN triode VT2 is the negative electrode of connecting luminous diode LED2, the anode of diode VD2 and the other end of auxiliary reclay K2 coil simultaneously; The other end of the anode contact resistance R4 of LED 2;
2 pin of DB1620 temperature sensor connect the emitter of 3 pin, 4 pin, the negative pole power supply terminal of temperature LCD gauge outfit, the emitter of NPN triode VT1 and NPN triode VT2 simultaneously, and ground connection;
Described humidity controlling unit comprises resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, slide rheostat Rp1, slide rheostat Rp2, electric capacity C1, diode VD3, diode VD4, LED 3, LED 4, NPN triode VT3, NPN triode VT4, comparer A1, comparer A2, auxiliary reclay K4 and auxiliary reclay K3; + 5V direct supply connects one end of 3 pin of IH3605 humidity sensor, the positive pole power supply terminal of humidity LCD gauge outfit, one end of resistance R5, one end of resistance R6, one end of resistance R9, the negative electrode of diode VD3, one end of auxiliary reclay K4 coil, one end of resistance R10, the negative electrode of diode VD4 and auxiliary reclay K3 coil simultaneously;
2 pin of IH3605 humidity sensor connect the inverting input of the negative pole power supply terminal of humidity LCD gauge outfit, one end of electric capacity C1, the in-phase input end of comparer A1 and comparer A2 simultaneously; The other end of resistance R5 connects a stiff end of slide rheostat Rp2, the movable end of slide rheostat Rp2 connects the inverting input of comparer A1, one end of the output terminal contact resistance R8 of comparer A1, the other end of resistance R8 connects the base stage of NPN triode VT4, and the collector of NPN triode VT4 is the negative electrode of connecting luminous diode LED4, the anode of diode VD4 and the other end of auxiliary reclay K3 coil simultaneously; The other end of the anode contact resistance R10 of LED 4;
The other end of resistance R6 connects a stiff end of slide rheostat Rp1, the movable end of slide rheostat Rp1 connects the in-phase input end of comparer A2, one end of the output terminal contact resistance R7 of comparer A2, the other end of resistance R7 connects the base stage of NPN triode VT3, and the collector of NPN triode VT3 is the negative electrode of connecting luminous diode LED3, the anode of diode VD3 and the other end of auxiliary reclay K4 coil simultaneously; The other end of the anode contact resistance R9 of LED 3;
1 pin of IH3605 humidity sensor connects the emitter of the other end of electric capacity C1, another stiff end of slide rheostat Rp2, the emitter of NPN triode VT3 and NPN triode VT4 simultaneously, and ground connection;
One end of 220V AC power connects a power supply terminal of a power supply terminal of well heater 6, a power supply terminal of fan 7 and humidifier 8 simultaneously; Another power supply terminal of well heater 6 connects one end of auxiliary reclay K2 normally opened contact, and another power supply terminal of fan 7 connects one end of auxiliary reclay K1 normally opened contact and one end of auxiliary reclay K4 normally opened contact simultaneously; Another power supply terminal of humidifier 8 connects one end of auxiliary reclay K3 normally opened contact;
One end of 220V AC power connects the other end of the other end of auxiliary reclay K1 normally opened contact, the other end of auxiliary reclay K2 normally opened contact, the other end of auxiliary reclay K4 normally opened contact and auxiliary reclay K3 normally opened contact simultaneously.
Principle of work: DB1620 temperature sensor gathers the environment temperature in laboratory, its digital signal exported, by its 5 pin, namely TCOM pin exports, and in LCD gauge outfit displays temperature, allow people know the concrete numerical value of present indoor temperature intuitively.Three control pins of DB1620 temperature sensor are: 5 pin (TCOM), 7 pin (THIGH) and 6 pin (TLOW), the ceiling temperature that this laboratory is arranged is TH, lower limit temperature is TL, and needs to be adjusted by 2 pin and 3 pin according to user.When the laboratory temperature detected is lower than lower limit temperature TL, 7 pin output low levels, VT1 ends, and K1 coil must not be electric, is failure to actuate; 6 pin export high level, VT2 conducting, and K2 coil obtains electric, and its normally opened contact closes, and well heater 6 is devoted oneself to work, and adds temperature operation to laboratory, and the pilot lamp LED2 simultaneously for characterizing lower limit temperature is bright; Along with the rising of temperature, when the temperature detected higher than lower limit temperature TL lower than ceiling temperature TH time, 5 pin, 6 pin and the equal output low level of 7 pin, K2 coil blackout, its normally opened contact recover off-state, well heater is cut, stop heating.If environment temperature is high, when laboratory temperature being detected higher than ceiling temperature TH, 7 pin export high level, VT1 conducting, K1 coil obtains electric, and its normally opened contact closes, and fan 7 is devoted oneself to work, carry out cooling operation to laboratory, meanwhile, the pilot lamp LED1 characterizing ceiling temperature is bright; Along with the decline of temperature, when laboratory temperature is down between TL and TH again, 6 pin and the equal output low level of 7 pin, the equal power-off of K1 and K2 coil, well heater 6 and fan 7 all cut go out main circuit.Working temperature like this with regard to achieving laboratory is between lower limit temperature TL and ceiling temperature TH.
Present embodiment adopts the humidity of Integrated Humidity Sensor IH3605 testing laboratory, also adopts LCD gauge outfit to carry out display humidity, and the adjustment of threshold moisture realizes adjustment by Rp2, and lower limit humidity realizes adjustment by Rp1.When the humidity in laboratory being detected lower than lower limit humidity, the inverting input input value of comparer A2 is lower than the input value of in-phase input end, comparer A2 exports high level, VT3 conducting, K3 coil obtains electric, its normally opened contact closes, and humidifier 8 is devoted oneself to work, and the pilot lamp LED3 simultaneously characterizing lower limit humidity is bright; Along with the operation of humidifier 8, the humidity in laboratory increases, when it exceedes lower limit humidity, and A2 output low level, VT3 ends, K3 coil blackout, and humidifier 8 excises; When humidity is no more than threshold moisture, it is also low level that A1 exports, if the humidity in laboratory exceedes threshold moisture, then the in-phase input end input value of A1 is greater than the input value of its inverting input, A1 exports high level, VT4 conducting, and K4 coil obtains electric, its normally opened contact closes, fan 7 is put into work, reduces laboratory humidity, ensures that the humidity in laboratory is between bound, the humiture in laboratory is made to be in the scope of setting, to make experimental result accurate.
Present embodiment adopts the simple circuit of structure to realize controlling, the requirement of humiture can be met completely for common lab, cheap, and present embodiment circuit is applicant's designed, designed, simple, be easier to realize than known circuit, owing to only adopting analog device to realize, do not need program setting, the duty of this device is especially stable, and control effects is good.
Claims (2)
1. for the temperature and humidity controller of constant temperature and moisture test room, it is characterized in that, it comprises temperature sensor (1), humidity sensor (2), controller (3), well heater (6), fan (7), humidifier (8), temperature indicator (4) and wetness (5); Controller (3) comprises temperature control unit (3-1) and humidity controlling unit (3-2); The temperature signal output terminal of temperature sensor (1) is connected with the temperature signal input of temperature control unit (3-1); The moisture signal output terminal of humidity sensor (2) is connected with the moisture signal input end of humidity controlling unit (3-2);
The Temperature displaying signal output part of temperature control unit (3-1) is connected with the display input end of temperature indicator (4); The heating instructions output terminal of temperature control unit (3-1) is connected with the heating instructions input end of well heater (6); The cooling instruction output end of temperature control unit (3-1) is connected with the cooling command input of fan;
The humidity display signal output part of humidity controlling unit (3-2) is connected with the display input end of wetness (5); The humidification instruction output end of humidity controlling unit (3-2) is connected with the humidification command input of humidifier (8); The wet down instruction output end of humidity controlling unit (3-2) is connected with the wet down command input of fan (7).
2. according to claim 1 for the temperature and humidity controller of constant temperature and moisture test room, it is characterized in that, temperature sensor (1) adopts DB1620 temperature sensor to realize, humidity sensor (2) adopts IH3605 humidity sensor to realize, and temperature indicator (4) and wetness (5) all adopt LCD gauge outfit to realize;
Described temperature control unit comprises resistance R1, resistance R2, resistance R3, resistance R4, diode VD1, diode VD2, LED 1, LED 2, NPN triode VT1, NPN triode VT2, auxiliary reclay K1 and auxiliary reclay K2; + 5V direct supply connects one end of 1 pin of DB1620 temperature sensor, the positive pole power supply terminal of temperature LCD gauge outfit, one end of resistance R3, the negative electrode of diode VD1, one end of auxiliary reclay K1 coil, one end of resistance R4, the negative electrode of diode VD2 and auxiliary reclay K2 coil simultaneously;
One end of 7 pin contact resistance R1 of DB1620 temperature sensor, the other end of resistance R1 connects the base stage of NPN triode VT1, and the collector of NPN triode VT1 is the negative electrode of connecting luminous diode LED1, the anode of diode VD1 and the other end of auxiliary reclay K1 coil simultaneously; The other end of the anode contact resistance R3 of LED 1;
One end of 6 pin contact resistance R2 of DB1620 temperature sensor, the other end of resistance R2 connects the base stage of NPN triode VT2, and the collector of NPN triode VT2 is the negative electrode of connecting luminous diode LED2, the anode of diode VD2 and the other end of auxiliary reclay K2 coil simultaneously; The other end of the anode contact resistance R4 of LED 2;
2 pin of DB1620 temperature sensor connect the emitter of 3 pin, 4 pin, the negative pole power supply terminal of temperature LCD gauge outfit, the emitter of NPN triode VT1 and NPN triode VT2 simultaneously, and ground connection;
Described humidity controlling unit comprises resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, slide rheostat Rp1, slide rheostat Rp2, electric capacity C1, diode VD3, diode VD4, LED 3, LED 4, NPN triode VT3, NPN triode VT4, comparer A1, comparer A2, auxiliary reclay K4 and auxiliary reclay K3; + 5V direct supply connects one end of 3 pin of IH3605 humidity sensor, the positive pole power supply terminal of humidity LCD gauge outfit, one end of resistance R5, one end of resistance R6, one end of resistance R9, the negative electrode of diode VD3, one end of auxiliary reclay K4 coil, one end of resistance R10, the negative electrode of diode VD4 and auxiliary reclay K3 coil simultaneously;
2 pin of IH3605 humidity sensor connect the inverting input of the negative pole power supply terminal of humidity LCD gauge outfit, one end of electric capacity C1, the in-phase input end of comparer A1 and comparer A2 simultaneously; The other end of resistance R5 connects a stiff end of slide rheostat Rp2, the movable end of slide rheostat Rp2 connects the inverting input of comparer A1, one end of the output terminal contact resistance R8 of comparer A1, the other end of resistance R8 connects the base stage of NPN triode VT4, and the collector of NPN triode VT4 is the negative electrode of connecting luminous diode LED4, the anode of diode VD4 and the other end of auxiliary reclay K3 coil simultaneously; The other end of the anode contact resistance R10 of LED 4;
The other end of resistance R6 connects a stiff end of slide rheostat Rp1, the movable end of slide rheostat Rp1 connects the in-phase input end of comparer A2, one end of the output terminal contact resistance R7 of comparer A2, the other end of resistance R7 connects the base stage of NPN triode VT3, and the collector of NPN triode VT3 is the negative electrode of connecting luminous diode LED3, the anode of diode VD3 and the other end of auxiliary reclay K4 coil simultaneously; The other end of the anode contact resistance R9 of LED 3;
1 pin of IH3605 humidity sensor connects the emitter of the other end of electric capacity C1, another stiff end of slide rheostat Rp2, the emitter of NPN triode VT3 and NPN triode VT4 simultaneously, and ground connection;
One end of 220V AC power connects a power supply terminal of a power supply terminal of well heater (6), a power supply terminal of fan (7) and humidifier (8) simultaneously; Another power supply terminal of well heater (6) connects one end of auxiliary reclay K2 normally opened contact, and another power supply terminal of fan (7) connects one end of auxiliary reclay K1 normally opened contact and one end of auxiliary reclay K4 normally opened contact simultaneously; Another power supply terminal of humidifier (8) connects one end of auxiliary reclay K3 normally opened contact;
One end of 220V AC power connects the other end of the other end of auxiliary reclay K1 normally opened contact, the other end of auxiliary reclay K2 normally opened contact, the other end of auxiliary reclay K4 normally opened contact and auxiliary reclay K3 normally opened contact simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201420593715.8U CN204065888U (en) | 2014-10-14 | 2014-10-14 | For the temperature and humidity controller of constant temperature and moisture test room |
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| CN201420593715.8U CN204065888U (en) | 2014-10-14 | 2014-10-14 | For the temperature and humidity controller of constant temperature and moisture test room |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812945A (en) * | 2017-11-19 | 2019-05-28 | 重庆市江津区江成老年公寓有限责任公司 | A kind of nursing home rooms constant temperature and humidity control device |
| CN110595021A (en) * | 2019-10-08 | 2019-12-20 | 苏州惠林节能材料有限公司 | Method for controlling laboratory humidity by adopting temperature sensor |
-
2014
- 2014-10-14 CN CN201420593715.8U patent/CN204065888U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812945A (en) * | 2017-11-19 | 2019-05-28 | 重庆市江津区江成老年公寓有限责任公司 | A kind of nursing home rooms constant temperature and humidity control device |
| CN110595021A (en) * | 2019-10-08 | 2019-12-20 | 苏州惠林节能材料有限公司 | Method for controlling laboratory humidity by adopting temperature sensor |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20181014 |