CN1048560C - Multi-Channel intelligent moisture and temp. measuring and controlling instrument - Google Patents
Multi-Channel intelligent moisture and temp. measuring and controlling instrument Download PDFInfo
- Publication number
- CN1048560C CN1048560C CN 92115262 CN92115262A CN1048560C CN 1048560 C CN1048560 C CN 1048560C CN 92115262 CN92115262 CN 92115262 CN 92115262 A CN92115262 A CN 92115262A CN 1048560 C CN1048560 C CN 1048560C
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- circuit
- temperature
- moisture
- control
- signal conversion
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 238000005259 measurement Methods 0.000 claims description 7
- 208000011580 syndromic disease Diseases 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 230000003321 amplification Effects 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 229920002521 macromolecule Polymers 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 5
- 239000002360 explosive Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract 1
- 241000208125 Nicotiana Species 0.000 description 2
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention relates to a multichannel intelligent moisture and temperature measuring and controlling instrument which belongs to an automatic detection control instrument for detecting and controlling environmental moisture and temperature. The measuring and controlling instrument is composed of a moisture and temperature sensor, a channel selecting circuit, a square wave generator, a signal conversion circuit, an A/D switching circuit, a single-chip machine system, an output interface circuit, a display circuit, an alarm circuit and a control circuit. The measuring and controlling instrument is provided with a software system so as to realize a moisture and temperature automatic control system integrating detection, display, alarm and control. The present invention has the advantages of high precision, stable and reliable operation, strong anti-interference ability, easy operation and use, and high degree of automation, and the present invention can be widely used for factories and manufacturing shops which have higher requirements for moisture and temperature, constant temperature and moisture occasions, inflammable and explosive occasions, etc.
Description
The invention belongs to the device of Detection ﹠ Controling ambient humidity and temperature.
The humidity of environment and temperature are the production of influence many industrial products, agricultural products and military product and store one of key factor of quality, in many industries of modernization industry, the humidity and the temperature that not only need testing environment also need the humidity and the temperature that control environment.Traditional psychrometer, dew point hygrometer etc. far can not satisfy above-mentioned requirements, are difficult to realize that robotization detects, and more can not realize robotization control, and owing to itself have moisture content, so environment for use is restricted.Along with the high development of science and technology and modernization industry, detect and control environment humidity and temperature have caused the great attention of each industrial state of the world.
Task of the present invention is to develop reliable, multi-functional, the multichannel intelligent humidity of a kind of working stability, temperature measurement-control instrument, to satisfy the needs that all trades and professions are carried out robotization detection and control in the modernized industry to ambient humidity and temperature.
Multi-channel intelligent damp-warm syndrome degree measurement and control instrument of the present invention adopts microcomputer technology and software engineering composition computer processing system and realizes.The technical solution of its hardware components is: be made up of wet, temperature sensor, channel selection circuit, driving power, signal conversion circuit, A/D change-over circuit, Single Chip Microcomputer (SCM) system, output interface circuit, display circuit, warning circuit, control circuit, used humidity sensor is the macromolecule membrane sensor, it is characterized in that driving power is a square-wave generator, this generator is by positive feedback synthetic circuit A
1, integrating circuit A
2, zero passage comparator circuit A
3Form positive feedback synthetic circuit A
1In-phase end also be connected to by positive and negative power supply and potentiometer W
1The DC component regulating circuit of forming, positive feedback synthetic circuit A
1Output terminal by potentiometer W
2With integrating circuit A
2End of oppisite phase link to each other integrating circuit A
2Output terminal and zero passage comparator circuit A
3End of oppisite phase link to each other zero passage comparator circuit A
3Output terminal through contact of channel selection circuit with after the end of oppisite phase of operational amplifier in the signal conversion circuit links to each other, link to each other with the A/D change-over circuit behind another contact of process channel selection circuit and the amplification, rectification and filtering circuit in the signal conversion circuit again, simultaneously, two of sensor terminates on the feedback end of operational amplifier in the signal conversion circuit, the output terminal of A/D change-over circuit links to each other with the data port of single-chip microcomputer, and the P of single-chip microcomputer
1Interface channel is selected another contact of circuit before mouthful, and then, the output interface circuit of single-chip microcomputer links to each other with display circuit, warning circuit, control circuit respectively.
The course of work of the present invention is: the drive signal of square-wave generator is by after the selection of channel selection circuit, will be through signal conversion circuit by wet, the resistance value with humidity or temperature variation that temperature sensor is experienced is converted to voltage signal, and behind amplification, rectification and filtering, through the A/D change-over circuit analog signals being converted to digital signal input Single Chip Microcomputer (SCM) system again handles, the output of Single Chip Microcomputer (SCM) system is by interface circuit control figure display circuit, warning circuit, control circuit, control circuit carries out the damp-warm syndrome degree to outside air-conditioning equipment and other opertaing device again and controls automatically then, thereby has realized that collection detects, control, show, report to the police in the complete humidity of one, automatic temperature control system.
Accompanying drawing 1 is the theory diagram of multi-channel intelligent damp-warm syndrome degree measurement and control instrument of the present invention.Wherein 1 is wet, temperature sensor, and 2 is channel selection circuit, and 3 for driving power is a square-wave generator, and 4 is signal conversion circuit, 5 is the A/D change-over circuit, and 6 is Single Chip Microcomputer (SCM) system, and 7 is output interface circuit, 8 is display circuit, and 9 is warning circuit, and 10 is control circuit.
Accompanying drawing 2,3,4,5 is the circuit embodiments figure of multi-channel intelligent damp-warm syndrome degree measurement and control instrument of the present invention.Wherein accompanying drawing 2 is the square-wave generator circuit diagram, and accompanying drawing 3 is signal conversion circuit and A/D change-over circuit figure, and accompanying drawing 4 is microcontroller system circuit and output interface circuit figure, and accompanying drawing 5 is display circuit, warning circuit and control circuit figure.
Narrating hardware of the present invention below in conjunction with accompanying drawing forms and principle of work.
Resistance R in the accompanying drawing 3
S1～R
S4Be the humidity sensor of four passages, and resistance R
W1～R
W4Be the temperature sensor of four passages, the channel selection circuit that eight passages are made up of three contacts of eight bit switch K is selected, and the way of passage can be set according to actual needs.Wet, temperature sensor is the key element of this instrument, especially humidity sensor, its excellent, whether bad quality and the function that directly influences this instrument.What present embodiment adopted is that the macromolecule membrane humidity sensor is as humidity-sensitive element.By humidity-sensitive element R
S1～R
S4The moisture signal of experiencing and by thermal sensing element R
W1～R
W4The temperature signal of experiencing is respectively by the operational amplifier A in the signal conversion circuit
4～A
7With A
8～A
11Resistance value is converted to magnitude of voltage.The square wave generation circuit of accompanying drawing 2 is by positive feedback synthetic circuit A
1, integrating circuit A
2With zero passage comparator circuit A
3Form A
2The output positive feedback give A
1, the vibration after guaranteeing to power up is through A
2Form triangular wave behind the integration, through comparator circuit A
3The back forms the square wave of frequency adjustable.A
3Output as the input voltage of signal conversion circuit respectively through contact and the potentiometer W of eight bit switch K
3～W
10With the operational amplifier A in eight signal conversion circuits
4～A
11Be connected.Potentiometer W in the square wave generation circuit
1Be used for regulating zero potential (promptly by regulating W
1The DC component that makes square-wave generator output is zero), W
2Be used for regulating oscillation frequency.A in the signal conversion circuit
4～A
11Output behind another contact of eight bit switch K, again by signal amplification circuit A
12And by diode D
2, resistance R
38, R
39And capacitor C
5, C
6Behind the half-wave rectification filtering circuit of being formed (as shown in Figure 3), supply with U among the figure
14The A/D change-over circuit, the D among the figure
1Be Zener diode, prevent the D/A converting circuit overvoltage and burn out.What the A/D change-over circuit of present embodiment was adopted is the ADC0809 chip, and its control signal is by RD, WR and the P of single-chip microcomputer
26Form.By the computer processing system of the present embodiment shown in the accompanying drawing 4 by single-chip microcomputer U
1, latch U
2With storer U
3, U
4, U
5Form, another contact of eight bit switch K respectively with resistance R
2～R
9And the P of single-chip microcomputer
1Eight terminal pins of mouth link to each other interface circuit U
6Selected interface chip is 8155 parallel interfaces, is equipped with other chip for driving U again
7, U
8, U
9Form, with the expansion external interface, in order to show, to report to the police and control.Adopt four charactron U of common cathode by the display circuit shown in the accompanying drawing 5
10～U
13Form, have four, wherein one is tested place, and other three is concrete detected numerical value.Warning circuit is by diode D
3, D
4And red, yellow indicator lamp or sound equipment sheet form, and when ambient humidity or temperature reached setting value, the bright or sound equipment sheet of redness or yellow alarm pilot lamp sent recognizable sound.Control circuit is by four photo-coupler G
1～G
4Form humidity or temperature-control circuit respectively, the output control signal is carried out automatic humidifying or temperature adjustment control to external control devices such as air-conditioning equipment etc.
Add the multi-channel intelligent damp-warm syndrome degree measurement and control instrument that corresponding software is formed by above-mentioned hardware components, realized the detection of humidity and temperature, show, report to the police, whole robotizations of functions such as control, and precision height, working stability is reliable, antijamming capability is strong, easy for operation, detect at a distance but not only centre observing and controlling is indoor, control, so that manage concentratedly, also can imbed in the tested controlled article (as grain, tealeaves, tobacco, cotton etc.) to measure relative humidity and the temperature in the thing heap, also can be used for the humidity and the measurement and control of temperature of inflammable and explosive occasion.Therefore, can be used for higher workshop, the factory of temperature and humidity requirement and require the environment of constant temperature, constant humidity, as the warehouse or the occasions such as mine, tunnel of munitions, grain, tealeaves, tobacco, textile.
Claims (1)
1. multi-channel intelligent damp-warm syndrome degree measurement and control instrument, form by wet, temperature sensor (1), channel selection circuit (2), driving power (3), signal conversion circuit (4), A/D change-over circuit (5), Single Chip Microcomputer (SCM) system (6), output interface circuit (7), display circuit (8), warning circuit (9), control circuit (10), used humidity sensor is the macromolecule membrane sensor, it is characterized in that driving power is a square-wave generator, this generator is by positive feedback synthetic circuit (A
1), integrating circuit (A
2), zero passage comparator circuit (A
3) form positive feedback synthetic circuit (A
1) in-phase end also be connected to by positive and negative power supply and potentiometer (W
1) the DC component regulating circuit formed, positive feedback synthetic circuit (A
1) output terminal by potentiometer (W
2) and integrating circuit (A
2) end of oppisite phase link to each other integrating circuit (A
2) output terminal and zero passage comparator circuit (A
3) end of oppisite phase link to each other zero passage comparator circuit (A
3) output terminal through contact of channel selection circuit with after the end of oppisite phase of operational amplifier in the signal conversion circuit links to each other, link to each other with the A/D change-over circuit behind another contact of process channel selection circuit and the amplification, rectification and filtering circuit in the signal conversion circuit again, simultaneously, two of sensor terminates on the feedback end of operational amplifier in the signal conversion circuit, the output terminal of A/D change-over circuit links to each other with the data port of single-chip microcomputer, and the P of single-chip microcomputer
1Interface channel is selected another contact of circuit before mouthful, and then, the output interface circuit of single-chip microcomputer links to each other with display circuit, warning circuit, control circuit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92115262 CN1048560C (en) | 1992-12-25 | 1992-12-25 | Multi-Channel intelligent moisture and temp. measuring and controlling instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92115262 CN1048560C (en) | 1992-12-25 | 1992-12-25 | Multi-Channel intelligent moisture and temp. measuring and controlling instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1080741A CN1080741A (en) | 1994-01-12 |
| CN1048560C true CN1048560C (en) | 2000-01-19 |
Family
ID=4947312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92115262 Expired - Fee Related CN1048560C (en) | 1992-12-25 | 1992-12-25 | Multi-Channel intelligent moisture and temp. measuring and controlling instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1048560C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100337099C (en) * | 2004-07-21 | 2007-09-12 | 中国科学院广州电子技术研究所 | Temp. moisture monitoring meter and method for correcting error of platinum thermal resistance |
| DE102006034931A1 (en) * | 2006-07-28 | 2008-01-31 | E + E Elektronik Ges.M.B.H. | Circuit arrangement and method for moisture measurement |
| CN101666767B (en) * | 2009-10-10 | 2012-11-21 | 北京航空航天大学 | Multichannel plant hydropenia monitoring system based on impedance measurement |
| CN102566617A (en) * | 2011-12-23 | 2012-07-11 | 天津市东文浩达能源技术有限公司 | Microcomputer matrix temperature control device |
| CN102778881A (en) * | 2012-08-07 | 2012-11-14 | 山东省果树研究所 | Temperature and humidity monitoring and recording integrated device for sweet cherry culturing greenhouse |
| CN103712712A (en) * | 2013-12-20 | 2014-04-09 | 淮南万泰电子股份有限公司 | Contraposition temperature measuring device for mining belt type conveyer |
| CN104090558A (en) * | 2014-07-15 | 2014-10-08 | 无锡北斗星通信息科技有限公司 | Method for monitoring environment of textile workshop |
| CN107071656B (en) * | 2017-05-23 | 2023-04-28 | 武汉中电通信有限责任公司 | Multichannel gating loudspeaker circuit for processing multi-station signal input |
| CN109298029A (en) * | 2018-10-23 | 2019-02-01 | 王虹 | Intelligent humidity detection device based on integral operation |
-
1992
- 1992-12-25 CN CN 92115262 patent/CN1048560C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1080741A (en) | 1994-01-12 |
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