CN203191103U - Environment analog quantity acquisition module - Google Patents

Environment analog quantity acquisition module Download PDF

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Publication number
CN203191103U
CN203191103U CN 201320045958 CN201320045958U CN203191103U CN 203191103 U CN203191103 U CN 203191103U CN 201320045958 CN201320045958 CN 201320045958 CN 201320045958 U CN201320045958 U CN 201320045958U CN 203191103 U CN203191103 U CN 203191103U
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CN
China
Prior art keywords
circuit
sensor
acquisition module
amplifier circuit
operational amplifier
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201320045958
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Chinese (zh)
Inventor
罗辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHUZHOU YAOHUI ELECTRONICS TECHNOLOGY Co Ltd
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CHUZHOU YAOHUI ELECTRONICS TECHNOLOGY Co Ltd
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Application filed by CHUZHOU YAOHUI ELECTRONICS TECHNOLOGY Co Ltd filed Critical CHUZHOU YAOHUI ELECTRONICS TECHNOLOGY Co Ltd
Priority to CN 201320045958 priority Critical patent/CN203191103U/en
Application granted granted Critical
Publication of CN203191103U publication Critical patent/CN203191103U/en
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  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)

Abstract

The utility model provides an environment analog quantity acquisition module, and relates to the technical field of electronic information. The module at least comprises a group of temperature measuring sensors and humidity measuring sensors. The temperature measuring sensors and the humidity measuring sensors are respectively connected with an operational amplifier circuit through a measuring bridge circuit, so that measured weak signals are amplified and are convenient to transmit. The operational amplifier circuit outputs signals through a filtering circuit. The measuring bridge circuit is connected with a precision standard stabilized power supply circuit. The measuring bridge circuit is connected with a compensating circuit through a voltage follower. The compensating circuit is connected with the operational amplifier circuit. The module is simple in structure, reasonable in design, and can acquire and amplify weak analog quantity signals and compensate errors caused by environmental factors, and acquisition is accurate and reliable.

Description

Environmental simulation amount acquisition module
Technical field
The utility model relates to electronic information technical field, is specifically related to a kind of environmental simulation amount acquisition module.
Background technology
Analogue collection module in the market has following problem usually: have plenty of that image data is single, to have plenty of output signal too small, can not long-distance transmissions etc.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of adaptability good, gathers accurate environmental simulation amount acquisition module.
Technical problem to be solved in the utility model realizes by the following technical solutions:
A kind of environmental simulation amount acquisition module, at least comprise one group of sensor for measuring temperature and moisture measurement sensor, described sensor for measuring temperature and moisture measurement sensor are respectively through measuring bridge circuit concatenation operation amplifier circuit, the feeble signal that measures is amplified, be beneficial to transmission, described operation amplifier circuit is exported signal through filtering circuit, described measuring bridge circuit is connected with accurate benchmark source of stable pressure circuit, described measuring bridge circuit is connected to compensating circuit through voltage follower, and described compensating circuit is connected to operation amplifier circuit.
Described sensor for measuring temperature adopts platinum sensor.
Described operation amplifier circuit is provided with operational amplifier.
The beneficial effects of the utility model are: the utility model constitutes simple, and is reasonable in design, can be to faint analog signals collection and amplification, and the error that environmental factor is caused compensates, and gathers accurately reliable.
Description of drawings
Fig. 1 is the utility model system chart.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
As shown in Figure 1, a kind of environmental simulation amount acquisition module, at least comprise one group of sensor for measuring temperature and moisture measurement sensor, sensor for measuring temperature and moisture measurement sensor are through measuring bridge circuit concatenation operation amplifier circuit, the feeble signal that measures is amplified, be beneficial to transmission, operation amplifier circuit is exported signal through filtering circuit, filtering circuit is handled output signal, makes signal more level and smooth with the noise that leaches by power supply or external generation.The measuring bridge circuit is connected with accurate benchmark source of stable pressure circuit, the measuring bridge circuit is connected to compensating circuit through voltage follower, compensating circuit is connected to operation amplifier circuit, when environment temperature reaches 25 ° of C, humidity was exported 100% o'clock, humidity circuit output 5V voltage is powered to compensating circuit after follower output, to obtain compensating signal, when environment temperature reaches 25 ° of C, humidity was exported 100% o'clock, compensating circuit output and the proportional compensating signal of temperature are also sent into the totalizer of being made up of operational amplifier thereafter with humidity circuit amplifying signal and are carried out temperature compensation, and final output is through the moisture signal of temperature compensation.The temperature and humidity measurement sensor adopts platinum sensor, and operation amplifier circuit is provided with operational amplifier, and present embodiment selects for use the precision operational-amplifier of high cmrr that the feeble signal that measures is amplified, and is beneficial to transmission.
Sensor for measuring temperature adopts the PT100 platinum resistance thermometer sensor,, and its resistance is directly proportional with variation of temperature.Because platinum resistance has the stability of better physical and chemical property in Oxidant or high temperature, therefore, the temperature sensor that utilizes platinum to make has higher precision, it is not only as industrial temperature element, also as the benchmark that reappears thermodynamic scale, for accurate temperature survey, often select platinum sensor for use.Humidity Detection is finished by integrated humidity sensor IH3605, the big I of the plate condenser electric capacity that forms between two thermalization polymer layers of this device inside changes with the difference of humidity, thereby can finish the collection to moisture signal, the thermalization polymer layer has the function of defence dirt, dust, oil and other objectionable impurities simultaneously.The output voltage of humidity sensor is the function of supply voltage, humidity and temperature.Supply voltage raises, and output voltage in actual applications, can calculate actual rh value by following two steps with proportional rising.
(1) at first according to following computing formula, calculates rh value RH0 under 25 ℃ of temperature conditions.
VOUT="VDC"(0.0062RH0+0.16)
Wherein: VOUT is the voltage output value of IH3605, and VDC is the supply voltage value of IH3605, the rh value when RH0 is 25 ℃.
(2) carry out temperature compensation, calculate the actual rh value RH under the Current Temperatures.
RH=RH0/(1.0546-0.00216t)
Wherein: RH is actual rh value, and t is current temperature value, and unit is ℃.
More than show and described ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the instructions just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims (3)

1. environmental simulation amount acquisition module, at least comprise one group of sensor for measuring temperature and moisture measurement sensor, described sensor for measuring temperature and moisture measurement sensor are respectively through measuring bridge circuit concatenation operation amplifier circuit, the feeble signal that measures is amplified, be beneficial to transmission, described operation amplifier circuit is exported signal through filtering circuit, described measuring bridge circuit is connected with accurate benchmark source of stable pressure circuit, described measuring bridge circuit is connected to compensating circuit through voltage follower, and described compensating circuit is connected to operation amplifier circuit.
2. environmental simulation amount acquisition module according to claim 1 is characterized in that: described sensor for measuring temperature employing platinum sensor.
3. environmental simulation amount acquisition module according to claim 1, it is characterized in that: described operation amplifier circuit is provided with operational amplifier.
CN 201320045958 2013-01-28 2013-01-28 Environment analog quantity acquisition module Expired - Fee Related CN203191103U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320045958 CN203191103U (en) 2013-01-28 2013-01-28 Environment analog quantity acquisition module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320045958 CN203191103U (en) 2013-01-28 2013-01-28 Environment analog quantity acquisition module

Publications (1)

Publication Number Publication Date
CN203191103U true CN203191103U (en) 2013-09-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320045958 Expired - Fee Related CN203191103U (en) 2013-01-28 2013-01-28 Environment analog quantity acquisition module

Country Status (1)

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CN (1) CN203191103U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105510758A (en) * 2015-11-27 2016-04-20 湖北三江航天红峰控制有限公司 Device for low resistance conduction
CN110243883A (en) * 2019-06-18 2019-09-17 福州大学 A kind of relative humidity approximating method suitable for the intelligent humidity sensor-based system based on HS1101

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105510758A (en) * 2015-11-27 2016-04-20 湖北三江航天红峰控制有限公司 Device for low resistance conduction
CN110243883A (en) * 2019-06-18 2019-09-17 福州大学 A kind of relative humidity approximating method suitable for the intelligent humidity sensor-based system based on HS1101

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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

Granted publication date: 20130911

Termination date: 20150128

EXPY Termination of patent right or utility model