CN105258729A - Temperature and humidity detection system for switch cabinet based on single chip microcomputer - Google Patents
Temperature and humidity detection system for switch cabinet based on single chip microcomputer Download PDFInfo
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- CN105258729A CN105258729A CN201510719404.0A CN201510719404A CN105258729A CN 105258729 A CN105258729 A CN 105258729A CN 201510719404 A CN201510719404 A CN 201510719404A CN 105258729 A CN105258729 A CN 105258729A
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Abstract
The present invention discloses a temperature and humidity detection system for a switch cabinet based on a single chip microcomputer, comprising a single chip microcomputer, a temperature and humidity module, a reset circuit, a display circuit, an alarm circuit and an A/D converter; wherein the temperature and humidity module converts temperature and humidity into an electric signal, the electric signal first enters into a weak signal amplifier for amplification, then enters into the A/D converter, after that, a digital signal is outputted to the single chip microcomputer through a two-wire serial digital interface, and finally, the digital signal is displayed through a liquid crystal display in the display circuit; the single chip microcomputer is also connected with the alarm circuit and the reset circuit. The HU-10S temperature and humidity module is used for converting a nonlinear resistance signal of a humidity sensor into a linear voltage signal for outputting, and has the characteristics of linear output, good stability, good reliability, simple and convenient operation. The temperature and humidity detection system is high in accuracy of temperature and humidity monitoring, simple in measurement and monitoring means, and convenient in debugging.
Description
Technical field
The present invention relates to electrical equipment technical field, be specifically related to a kind of SCM Based switch cubicle temperature/humiditydetection detection system.
Background technology
Switch cubicle (also known as complete switch or complete power distribution equipment) is the electrical equipment based on isolating switch; refer to the requirement of manufacturer according to electrical primary main wiring diagram; relevant high and low voltage electrical equipment (comprising control apparatus, protective device, measurement electrical equipment) and bus, current－carrying conductor, insulator etc. are assemblied in metal cabinet that is closed or that open wide, as the device accepting and distribute electric energy in electric system.It is made up of cabinet and isolating switch two large divisions, has the functions such as built on stilts line, cable incoming-outgoing wire, bus contact.Cabinet is made up of housing, electric elements (comprising insulating part), various mechanism, secondary terminals and line.Switch cubicle requirement of shelter " five prevent ": prevent dividing falsely close circuit breaker by mistake, prevent charged deciliter disconnector, prevent a band point splice grafting switch, prevent with ground deciliter isolating switch, prevent mistakenly entering charged chamber.
Switch cubicle has certain regular service condition, as environment temperature, and ambient humidity, sea level elevation, seismic intensity etc.Generally, the temperature and humidity of environment is the condition that we must consider.The environment temperature of switch cubicle requires that ambient air temperature is no more than 40 DEG C (upper limits), and general area is-5 DEG C (lower limits), and severe cold area can be-15 DEG C, the temperature of environment is too high, the conductance of metal can lower, and resistance increases, and surface oxidation effect aggravates.Too high temperature also can make the life-span of the insulating part in cabinet greatly shorten, and dielectric strength declines.Otherwise environment temperature is too low, can internal force be produced in insulating part, finally can cause the destruction of insulating part.Ambient humidity daily mean is not more than 95%, and monthly average value is not more than 90%.The too high meeting of humidity causes switch cubicle to break down in operation process.Therefore the detection carrying out temperature and humidity to it is vital.
Nonlinear object and the consistance of conventional Temperature Humidity Sensor are poor, make the measuring method of humiture and means relatively complicated, and bring very large difficulty to the debugging of circuit.Traditional temperature and humidity measurement many employings simulation small-signal sensor, not only signal conditioning circuit is complicated, and the calibration process of warm and humid angle value is also extremely complicated, and needs to use expensive calibrating instrument equipment.
Summary of the invention
(1) technical matters that will solve
In order to overcome prior art deficiency, now proposing a kind of SCM Based switch cubicle temperature/humiditydetection detection system, the automatic monitoring of humiture can be realized and can show and report to the police.
(2) technical scheme
Of the present inventionly to be achieved through the following technical solutions: the present invention proposes a kind of SCM Based switch cubicle temperature/humiditydetection detection system, comprise single-chip microcomputer, humiture module, reset circuit, display circuit, warning circuit and A/D converter, described humiture module converts humiture to electric signal, first this electric signal enters small signal amplifier and amplifies, then A/D converter is entered, eventually pass two-wire serial digital interface output digit signals to single-chip microcomputer, finally shown by the liquid crystal display in display circuit, described single-chip microcomputer is also connected with warning circuit and reset circuit simultaneously.
Improve as one, described single-chip microcomputer adopts AT89C51 single-chip microcomputer.
As further improvement, described humiture module model is HU-10S
(3) beneficial effect
The present invention, relative to prior art, has following beneficial effect:
The SCM Based switch cubicle temperature/humiditydetection detection system of the one that the present invention mentions, the effect of HU-10S humiture module the non-linear resistance signal of humidity sensor is converted to linear voltage to export, the linear output of its principal feature, good stability, good reliability, easy and simple to handle, this detection system is high to temperature-humidity monitoring accuracy, measurement monitoring means is simple, and debugging is convenient.
Accompanying drawing explanation
Fig. 1 is present system structured flowchart.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The SCM Based switch cubicle temperature/humiditydetection detection system of one as shown in Figure 1, comprise single-chip microcomputer, humiture module, reset circuit, display circuit, warning circuit and A/D converter, described humiture module converts humiture to electric signal, first this electric signal enters small signal amplifier and amplifies, then A/D converter is entered, eventually pass two-wire serial digital interface output digit signals to single-chip microcomputer, finally shown by the liquid crystal display in display circuit, described single-chip microcomputer is also connected with warning circuit and reset circuit simultaneously.
Wherein, described single-chip microcomputer adopts AT89C51 single-chip microcomputer; Described humiture module model is HU-10S.
The SCM Based switch cubicle temperature/humiditydetection detection system of one that above specific embodiment is mentioned, by the collection to signal, analysis, process, then output signal makes execution unit carry out action.The important technological parameters of TT&C system is as follows: temperature detection range 0 ~ 50 DEG C, measuring accuracy ± 0.5 DEG C; Humidity Detection scope 0% ~ 100%RH, accuracy of detection ± 2.5%RH.
The basic parameter of HU-10S humiture module is as follows: operating voltage range: DC voltage 5.0 ± 0.1V; Output voltage range: DC voltage 1.0 ± 3.0V; Working current (maximal value) 2mA; Measuring accuracy (at 25 DEG C, during 60%RH) ± 5%RH; Storage condition humidity range: 0-95%RH; Storage condition temperature range :-20 DEG C to 70 DEG C; Year drift rate is less than ± 1.5% etc.
Use A/D converter, convert the temperature and humidity signal exported from HU-10S to digital signal, send into AT89C51 single-chip microcomputer and process, then shown by liquid crystal display.When measured humiture is beyond predetermined normal range, relevant instrument or staff can be given by signal transmission by warning circuit, carry out the operation of being correlated with.
Embodiment recited above is only be described the preferred embodiment of the present invention, not limits the spirit and scope of the present invention.Under the prerequisite not departing from design concept of the present invention; the various modification that this area ordinary person makes technical scheme of the present invention and improvement; all should drop into protection scope of the present invention, the technology contents of request protection of the present invention, all records in detail in the claims.
Claims (3)
1. a SCM Based switch cubicle temperature/humiditydetection detection system, comprise single-chip microcomputer, humiture module, reset circuit, display circuit, warning circuit and A/D converter, it is characterized in that: described humiture module converts humiture to electric signal, first this electric signal enters small signal amplifier and amplifies, then A/D converter is entered, eventually pass two-wire serial digital interface output digit signals to single-chip microcomputer, finally shown by the liquid crystal display in display circuit, described single-chip microcomputer is also connected with warning circuit and reset circuit simultaneously.
2. the SCM Based switch cubicle temperature/humiditydetection detection system of one according to claim 1, is characterized in that: described single-chip microcomputer adopts AT89C51 single-chip microcomputer.
3. the SCM Based switch cubicle temperature/humiditydetection detection system of one according to claim 1, is characterized in that: described humiture module model is HU-10S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510719404.0A CN105258729A (en) | 2015-10-30 | 2015-10-30 | Temperature and humidity detection system for switch cabinet based on single chip microcomputer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510719404.0A CN105258729A (en) | 2015-10-30 | 2015-10-30 | Temperature and humidity detection system for switch cabinet based on single chip microcomputer |
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| Publication Number | Publication Date |
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| CN105258729A true CN105258729A (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510719404.0A Pending CN105258729A (en) | 2015-10-30 | 2015-10-30 | Temperature and humidity detection system for switch cabinet based on single chip microcomputer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910656A (en) * | 2016-07-06 | 2016-08-31 | 安徽状元郎电子科技有限公司 | Wireless temperature and humidity monitor |
| CN111769442A (en) * | 2020-07-17 | 2020-10-13 | 国网江苏省电力有限公司无锡供电分公司 | Switch cabinet humidity dynamic control device |
-
2015
- 2015-10-30 CN CN201510719404.0A patent/CN105258729A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910656A (en) * | 2016-07-06 | 2016-08-31 | 安徽状元郎电子科技有限公司 | Wireless temperature and humidity monitor |
| CN111769442A (en) * | 2020-07-17 | 2020-10-13 | 国网江苏省电力有限公司无锡供电分公司 | Switch cabinet humidity dynamic control device |
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Application publication date: 20160120 |
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| WD01 | Invention patent application deemed withdrawn after publication |