CN201210260Y - Special laboratory temperature and humidity monitoring and control apparatus - Google Patents
Special laboratory temperature and humidity monitoring and control apparatus Download PDFInfo
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- CN201210260Y CN201210260Y CNU2008200292870U CN200820029287U CN201210260Y CN 201210260 Y CN201210260 Y CN 201210260Y CN U2008200292870 U CNU2008200292870 U CN U2008200292870U CN 200820029287 U CN200820029287 U CN 200820029287U CN 201210260 Y CN201210260 Y CN 201210260Y
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- humiture
- temperature
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Abstract
The utility model discloses a special laboratory temperature-moisture measuring-controlling device; a temperature-moisture sensing module converts a temperature-moisture signal into an electric signal to be transferred to a signal regulating circuit; the regulated signal is collected by a multi-function data collection card to be inputted into a computer; after the wave filtration, the computer converts the collected electric signal of the temperature-moisture value to be the corresponding temperature-moisture value, and displays the relative graph on a monitor, and stores the data in a hard disk, and at the same time generates a control signal according to a setup temperature-moisture value; the control signal is transmitted to a control output circuit through the digital/analog conversion of the multi-function data collection card; the control output circuit outputs different commands to the corresponding execution mechanisms including the fan, the electric hair dryer and the moisturizing device. The device has low cost, simple measurement-controlling method, high precision and easy operation, and can be easy to be realized; at the same time, the measurement-controlling results are displayed on the monitor of the computer, thereby being visual; the software realizes different traditional testing instruments, thereby being more convenient to be operated; the device can also easily realizes the expansion of the function.
Description
Technical field
The utility model belongs to electronic technology field.
Background technology
Laboratory equipment all has temperature, humidity requirement separately, particularly some exact instrument or special industry, their laboratory requires higher to humiture, for example in root weaving, dyeing, the variation of testing environment temperature, humidity all has very big influence to every technical indicator of textile.To these special experimental laboratory humiture observing and controlling is that necessary work such as scientific experiment are carried out in the specific (special) requirements laboratory, traditional test and control are to be core with the single-chip microcomputer, according to different humidity requirements, by the different adjusting final state of hardware setting, can be with the humidity regulation of lab space to setting value.The electrical measurement control instrument that typically uses instrument such as thermometer, humidometer and output analog quantity is come measuring and control data, is by the humiture value that manually reads and write down on the analogue instrument.This method observing and controlling and control accuracy are low, tend to add the external world and artificial factor, and error is big, and observation is inconvenient, and real-time is poor, inefficiency.Along with the development of sensor technology and observing and controlling measuring technology, in order to understand the breadboard humiture Changing Pattern of specific (special) requirements better, traditional investigating method and device can not adapt to breadboard needs, need the new measure and control device of research.
Summary of the invention
Deficiencies such as the prior art error is big, survey is inconvenient, real-time is poor in order to overcome, inefficiency, the utility model provides a kind of special experimental laboratory humiture measure and control device, can adapt to the breadboard needs of specific (special) requirements, understand breadboard humiture Changing Pattern better, accurately control breadboard humiture.Simultaneously, make that observing and controlling and control are more accurate, the result shows vivider directly perceived, more convenient operation, and be easy to realize the function expansion.
The technical scheme that its technical matters that solves the utility model adopts is: comprise computing machine, humiture sensing module, signal conditioning circuit, multifunctional data acquisition card, controlling output circuit and actuating unit.The humiture sensing module comprises temperature sensor and humidity sensor, mainly finishes the perception of laboratory humiture, and converts temperature-humidity signal to electric signal and transfer to signal conditioning circuit; Signal conditioning circuit is by shaping, filtering, and the converting electrical signal of sensor is become electric signal in the multifunctional data acquisition card input range; Multifunctional data acquisition card will advance computing machine by mould/number conversion collection through the sensing data behind the filtering and noise reduction; Computing machine will gather after the electric signal filtering of humiture value, be transformed into corresponding humiture value, a plurality of virtual instruments that on display, make up then by virtual instrument technique, show corresponding figure line, and deposit data in hard disk, generate control signal according to the humiture value of setting by the pid control algorithm in band dead band simultaneously; Control signal via the D/A switch of multifunctional data acquisition card, is given controlling output circuit again; Controlling output circuit is exported to corresponding topworks with different orders, comprise fan, hair dryer and humidifier, this wherein fan be used for exhaust, can reduce the humiture of experimental situation, humidifier is used for increasing the humidity of experimental situation, and hair dryer is used to improve the temperature of experimental situation.
Comprise the steps: during the utility model work
A) set breadboard humiture value;
B) gather the laboratory humiture by temperature sensor and humidity sensor, and convert corresponding electric signal to;
C) multifunctional data acquisition card will be through the breadboard humiture electrical signal collection after the signal conditioning circuit conditioning in computing machine;
D) computing machine becomes corresponding humiture value by filtering with the humiture electrical signal conversion, shows on the instrument display interface and deposits hard disk in, generates control signal according to the humiture value of setting by the pid control algorithm in band dead band simultaneously;
E) control signal is sent to topworks via controlling output circuit---fan, hair dryer and humidifier;
F) topworks finishes the action that corresponding humiture is regulated control according to control command;
G) the laboratory humiture situation after overregulating is sent into computing machine once more by temperature sensor and humidity sensor perception;
H) pass through repeatedly above closed loop automatic control process, make breadboard humiture reach setting value.
The beneficial effects of the utility model are: the utility model can adopt virtual instrument technique, utilizes high performance modularized hardware, finishes the application of various tests, measurement and robotization in conjunction with Efficient and Flexible software.Flexible and efficient software can be created complete self-defining user interface, and modular hardware can provide the omnibearing system integration easily.This device has fully represented virtual instrument technique performance height, few advantage of development time, and the approach of minimum cost is provided for the expansion of device.Therefore, we can say that this device has that cost is low, investigating method is simple, precision is high, the advantage of easy operating and realization, the result of observing and controlling simultaneously shows visual in image by computer screen, software realizes that various traditional test instruments make more convenient operation, and can more easily realize the function expansion.
Below in conjunction with drawings and Examples the utility model is further specified.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Device embodiment: with reference to Fig. 1, device of the present utility model comprises computing machine, humiture sensing module, signal conditioning circuit, multifunctional data acquisition card, controlling output circuit and actuating unit.The humiture sensing module comprises temperature sensor and humidity sensor, mainly finishes the perception of laboratory humiture, and converts temperature-humidity signal to electric signal and transfer to signal regulations circuit; Signal conditioning circuit is by shaping, filtering, and the converting electrical signal of sensor is become electric signal in the multifunctional data acquisition card input range; Multifunctional data acquisition card will advance computing machine by mould/number conversion collection through the sensing data behind the filtering and noise reduction; Computing machine will gather after the electric signal filtering of humiture value, be transformed into corresponding humiture value, a plurality of virtual instruments that on display, make up then by virtual instrument technique, show corresponding figure line, and deposit data in hard disk, generate control signal according to the humiture value of setting by the pid control algorithm in band dead band simultaneously; Control signal via the D/A switch of multifunctional data acquisition card, is given controlling output circuit again; Controlling output circuit is exported to corresponding topworks with different orders, comprise fan, hair dryer and humidifier, this wherein fan be used for exhaust, can reduce the humiture of experimental situation, humidifier is used for increasing the humidity of experimental situation, and hair dryer is used to improve the temperature of experimental situation.
Comprise the steps: during the utility model work
A) in computing machine, pass through to set among the sub-VI of control of LabVIEW graphical programming software creation breadboard humiture value;
B) the sub-VI of control sends lab investigation and control command, gathers the laboratory humiture by temperature sensor and humidity sensor, and converts corresponding electric signal to;
C) multifunctional data acquisition card will be through the breadboard humiture electrical signal collection after the signal conditioning circuit conditioning in computing machine;
D) computing machine is finished the filtering of signal by the sub-VI of filtering by virtual instrument software LabView exploitation, convert thereof into corresponding humiture value, and on the virtual instrument display interface of LabView exploitation, show and deposit hard disk in, generate control signal according to the humiture value of setting by the pid control algorithm in band dead band simultaneously;
E) control signal is by the sub-VI transmitting control commands of control, and control command is sent to topworks via controlling output circuit---fan, hair dryer and humidifier;
F) topworks finishes the action that corresponding humiture is regulated control according to control command;
G) the laboratory humiture situation after overregulating is sent into computing machine once more by temperature sensor and humidity sensor perception;
H) pass through repeatedly above closed loop automatic control process, make breadboard humiture reach setting value.
Described temperature signal sensing module adopts silicon single crystal temperature sensor and corresponding circuit, becomes voltage signal moisture signal trapping module to adopt UD-08 humidity sensor and corresponding circuit to convert humidity to voltage signal temperature transition.
What described multifunctional data acquisition card adopted is the PCI-6251 DAQ card that America NI company produces.It is a general DAQ card, can directly insert the pci bus interface of microcomputer.
Control circuit receives control signal from the digital output port of PXI-DAQ card, and the action of pilot relay then is operated under the corresponding state hair dryer, fan and humidifier.
The operating voltage of the fan in the described topworks is 12VDC, with common relay it is controlled; Hair dryer and ultrasonic humidifier are operated under the 220VAC voltage, respectively they are controlled with two solid-state relays.
Interference in the device described in the utility model may be because circuit contacts is bad, or in the A/D transfer process because the bad value of the sampling that the imperfection of software or hardware produces.It shows as emergent burst pulse in the time domain waveform.Utilizing the sub-VI of LabVIEW graphical programming software creation filtering, be continually varying according to humiture in this device, and rate of change is little, impulse disturbances value X (signal value of input) and more preceding value Y (value of sampled point) can be weighted the output of average back.Improved method effectively suppressor pulse is disturbed.
The sub-VI of control that utilizes LabVIEW graphical programming software creation compares back generation control word with current humiture value and setting value, call the sub-instrument Write to Digital Port.vi that LabVIEW carries again, with the digital I/O passage output of control word by appointment.
Data storage then is to call that Write Characters To File.vi deposits treated humiture value in the electronic form file among the LabVIEW.
Claims (1)
1, special experimental laboratory humiture measure and control device, comprise computing machine, humiture sensing module, signal conditioning circuit, multifunctional data acquisition card, controlling output circuit and actuating unit, it is characterized in that: the humiture sensing module comprises temperature sensor and humidity sensor, finish the perception of laboratory humiture, and convert temperature-humidity signal to electric signal and transfer to signal conditioning circuit; Signal conditioning circuit is by shaping, filtering, and the converting electrical signal of sensor is become electric signal in the multifunctional data acquisition card input range; Multifunctional data acquisition card will advance computing machine by mould/number conversion collection through the sensing data behind the filtering and noise reduction; Computing machine will gather after the electric signal filtering of humiture value, be transformed into corresponding humiture value, a plurality of virtual instruments that on display, make up then by virtual instrument technique, show corresponding figure line, and deposit data in hard disk, generate control signal according to the humiture value of setting by the pid control algorithm in band dead band simultaneously; Control signal via the D/A switch of multifunctional data acquisition card, is given controlling output circuit again; Controlling output circuit is exported to corresponding topworks with different orders, comprises fan, hair dryer and humidifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200292870U CN201210260Y (en) | 2008-06-05 | 2008-06-05 | Special laboratory temperature and humidity monitoring and control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200292870U CN201210260Y (en) | 2008-06-05 | 2008-06-05 | Special laboratory temperature and humidity monitoring and control apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN201210260Y true CN201210260Y (en) | 2009-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008200292870U Expired - Fee Related CN201210260Y (en) | 2008-06-05 | 2008-06-05 | Special laboratory temperature and humidity monitoring and control apparatus |
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| CN (1) | CN201210260Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950189A (en) * | 2010-07-12 | 2011-01-19 | 昆明理工大学 | Multiple greenhouses control device |
| CN106771794A (en) * | 2017-04-10 | 2017-05-31 | 国网安徽省电力公司培训中心 | Multifunctional virtual relay protection experimental complexes |
-
2008
- 2008-06-05 CN CNU2008200292870U patent/CN201210260Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950189A (en) * | 2010-07-12 | 2011-01-19 | 昆明理工大学 | Multiple greenhouses control device |
| CN106771794A (en) * | 2017-04-10 | 2017-05-31 | 国网安徽省电力公司培训中心 | Multifunctional virtual relay protection experimental complexes |
| CN106771794B (en) * | 2017-04-10 | 2023-04-07 | 国网安徽省电力有限公司培训中心 | Multifunctional virtual relay protection experiment complete equipment |
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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: 20090318 Termination date: 20110605 |