CN205246263U - Digital circuit is gathered to variable range of modularization pressure detection data - Google Patents
Digital circuit is gathered to variable range of modularization pressure detection data Download PDFInfo
- Publication number
- CN205246263U CN205246263U CN201521123998.0U CN201521123998U CN205246263U CN 205246263 U CN205246263 U CN 205246263U CN 201521123998 U CN201521123998 U CN 201521123998U CN 205246263 U CN205246263 U CN 205246263U
- Authority
- CN
- China
- Prior art keywords
- module
- circuit
- data acquisition
- core
- pressure
- Prior art date
- 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
Links
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a digital circuit is gathered to variable range of modularization pressure detection data belongs to circuit technical field, including sensor module, data acquisition module, power module and output module four bibliographic categories branch, sensor module selects for use the LTI021 -5 chipset to become core pressure collecting circuit, and data acquisition module selects for use the MAX197 chip as data acquisition module's core, and power module SG7805AIG883B is the power supply circuit of core chip, and output module selects for use the MAX232 chip to be the RS232 data acquisition module 1 of core. The gas flow value converts voltage signal to, can survey a plurality of ranges according to the difference of chooseing flow sensor for use, has strengthened the application scope of information acquisition circuit, it transmits the recipient to to convert the gas pressure value of real -time measurement to voltage signal to reach pressure data acquisition and control to gas.
Description
Technical field
The utility model belongs to circuit engineering field, relates to digital circuit, especially a kind of modularization pressure inspectionSurvey data changeable fluid and gather digital circuit.
Background technology
Pressure is an important parameter for description system state, and many physics of object, chemical characteristic are allRelevant with its pressure, such as fusing point, boiling point, vapour pressure etc. In chemical thermodynamics and chemical kineticsIn research, pressure is also a very important factor, therefore, presses force measurement in engineering research and applicationHave great importance. With regard to Physical Chemistry Experiment, pressure conventionally can be divided into high pressure, middle pressure, normal pressure andNegative pressure, the range of application of pressure is high to hundreds of MPa, the low vacuum that can approach vacuum system. According to surveyAmount pressure limit difference, accuracy requires different, and its measuring method is also not quite similar.
The patent of invention of application number 201010256464.0, discloses a kind of double-channel analog-digital joint mode variable gainData acquisition unit, comprise the parallel amplifying circuit of elementary amplification modulate circuit, two-way, A/D modular converter andDigital control module, improves dynamic range and the range measured, has ensured small-signal and wide range signalSampling precision, has realized high speed, high-precision data acquisition. Above-mentioned patented product, has represented current useThe circuit control that a more class gains adjustable, realizes multiple range adjustment and replacing with multiple passages,When needing to change range in specific environment, the application of the data acquisition circuit of this replacing channel patternWill be subject to certain restrictions, make troubles to user.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of modularization pressure detecting data changeable fluid and adoptsCollection digital circuit, converts gas flow value to voltage signal, and according to selecting, the difference of flow sensor is passableSurvey multiple ranges, the gas pressure value of measuring in real time converts voltage signal to and is transferred to recipient, thereby reachesTo pressure data collection and the control of gas.
The technical solution of the utility model is as follows:
A kind of modularization pressure detecting data changeable fluid gathers digital circuit, comprises sensor assembly, dataAcquisition module, power module and output module four parts.
Sensor assembly adopt be pressure sensor, be arranged on gas passage inside, when gas flow by the roadWhen internal sensor, pressure sensor is produced to pressure, select LTI021-5 chip composition through sensor assemblyCore pressure acquisition circuit, can convert pressure signal to corresponding voltage signal. Gas pressure data is turnedChange 0-5V voltage signal into.
Power module is by the power circuit taking SG7805AIG/883B as acp chip, and realization+12V arrivesThe conversion of the input supply voltage of+5V is whole provide+5V of collection digital circuit power supply. For improving power supplyThe stability of supply voltage increases electric source filter circuit in power circuit, export for power module+5VPower supply carries out filtering, uses four electric capacity in parallel in filter circuit. The two ends of shunt capacitance are respectively: oneTermination power output, other end ground connection. For increasing filter effect, connect one end of power supply output at shunt capacitanceSeries inductance between the end points of two electric capacity in centre position.
In data acquisition module, adopt A/D change-over circuit, select MAX197 chip as data acquisition moduleCore. MAX197 chip is a kind of single supply, multrirange, 8 passages, parallel 12 A/D conversionDevice, its sampling rate can reach 100ksps, and sampling effective dynamic range can increase to 16. In this chipBe integrated with sampling track and hold circuit, internal clock circuit and internal reference voltage source, so in the time of application,Required peripheral cell is few, therefore, with the data collecting system that MAX197 forms have hardware configuration simple,The advantage that volume is little and extendable functions is many.
Output module relates generally to the output interface of circuit, is directly connected with data acquisition module, adopts ripeThe MAX232 chip RS232 serial port communication technology that is core, the output of Information Monitoring that forms standard is logicalRoad, to reciever transmission voltage signal.
Modules is connected by PCB wiring board internal wiring each other, and reaction fast, is combined each otherJust form modularization pressure detecting data changeable fluid together and gathered digital circuit.
Effect of the present invention and benefit are that this modularization pressure detecting data changeable fluid gathers digital circuit, willGas flow value converts voltage signal to, can survey multiple ranges according to the difference of selecting flow sensor, increasesThe strong scope of application of information acquisition circuit; Convert the gas pressure value of measuring in real time to voltage signal transmissionTo recipient, thereby reach pressure data collection and the control to gas.
Brief description of the drawings
Fig. 1 modularization pressure detecting data changeable fluid gathers digital circuit schematic diagram.
Fig. 2 sensor assembly schematic diagram.
Fig. 3 power module schematic diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, to the technical side in the utility model embodimentCase is clearly and completely described, and obviously, described embodiment is only that the utility model part is realExecute example, instead of whole embodiment. Based on the embodiment in the utility model, ordinary skill peopleMember, not making the every other embodiment obtaining under creative work prerequisite, belongs to the utility modelThe scope of protection.
A kind of modularization pressure detecting data changeable fluid gathers digital circuit, as shown in Figure of description 1,Formed by sensor assembly, data acquisition module, power module and output module.
The pressure sensor that sensor assembly adopts is arranged in the pipeline of gas flow warp, and its sensor assembly is formerFigure is as shown in Figure of description 2 for reason, selects LTI021-5 chipset to become core pressure acquisition circuit, pressesThe collection of force data and conversion.
The A/D change-over circuit that data acquisition module selects MAX197 chip to form, realizes sensor assemblyThe collection of the pressure signal gathering.
Power module is by the power circuit taking SG7805AIG/883B as acp chip, and realization+12V arrivesThe conversion of the input supply voltage of+5V is whole provide+5V of collection digital circuit power supply.
Output module adopts the RS232 serial port communication technology that MAX232 chip is core, forms adopting of standardThe output channel of collection information, to reciever transmission voltage signal.
Embodiment recited above is described embodiment of the present utility model, not to this realityLimit with novel design and scope. Do not departing under the prerequisite of the utility model design concept abilityVarious modification and improvement that territory ordinary person makes the technical solution of the utility model, all should drop into this realityWith novel protection domain, scope of the present utility model is limited by claims instead of above-mentioned explanation,Therefore be intended to all changes that drop in the implication and the scope that are equal to important document of claim to include in this practicalityIn novel, any Reference numeral in claim should be considered as limiting related claim.
Claims (2)
1. modularization pressure detecting data changeable fluid gathers a digital circuit, it is characterized in that, by sensor diePiece, data acquisition module, power module and output module composition, described sensor assembly is selected LTI021-5Chipset becomes core pressure acquisition circuit, and described data acquisition module selects MAX197 chip as data acquisitionThe core of collection module, the power circuit that described power module SG7805AIG/883B is acp chip, described inIt is the RS232 serial communication of core that output module is selected MAX232 chip.
2. a kind of modularization pressure detecting data changeable fluid according to claim 1 gathers digital circuit, itsBe characterised in that, the conversion of the input supply voltage of arrive+5V of described power module realization+12V, is whole collectionProvide+5V of digital circuit power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521123998.0U CN205246263U (en) | 2015-12-29 | 2015-12-29 | Digital circuit is gathered to variable range of modularization pressure detection data |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521123998.0U CN205246263U (en) | 2015-12-29 | 2015-12-29 | Digital circuit is gathered to variable range of modularization pressure detection data |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205246263U true CN205246263U (en) | 2016-05-18 |
Family
ID=55945336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521123998.0U Expired - Fee Related CN205246263U (en) | 2015-12-29 | 2015-12-29 | Digital circuit is gathered to variable range of modularization pressure detection data |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205246263U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115901021A (en) * | 2023-03-02 | 2023-04-04 | 北京昆仑海岸科技股份有限公司 | Method, apparatus, medium, and program product for determining pressure information |
-
2015
- 2015-12-29 CN CN201521123998.0U patent/CN205246263U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115901021A (en) * | 2023-03-02 | 2023-04-04 | 北京昆仑海岸科技股份有限公司 | Method, apparatus, medium, and program product for determining pressure information |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201508409U (en) | Intelligent battery data logging device | |
| CN202928716U (en) | High precision intelligent temperature measurement circuit | |
| CN204330080U (en) | A kind of liquid level detection circuit based on sampling capacitance | |
| CN103412247A (en) | Ring main unit partial discharge monitoring system | |
| CN203785709U (en) | Multi-sensor data concentration acquisition system | |
| CN203414145U (en) | On-line verified data collecting and transmitting device of flowmeter | |
| CN205748484U (en) | A kind of multichannel data acquisition system based on FPGA | |
| CN205246263U (en) | Digital circuit is gathered to variable range of modularization pressure detection data | |
| CN105352865B (en) | A kind of PM2.5 sensors and PM2.5 detection methods based on infrared ray photoelectric conversion | |
| CN203241084U (en) | Vortex street flow converter based on application-specific integrated circuit | |
| CN202494744U (en) | Device for detecting quality of electric energy | |
| CN202583316U (en) | Circuit for collecting positive and negative current by single power supply | |
| CN205374585U (en) | Current collection device | |
| CN103076480A (en) | Tiny signal collecting card | |
| CN203812008U (en) | Analog signal collector | |
| CN201740627U (en) | Electric measurement device for dynamic balance | |
| CN203216569U (en) | High-precision underground water level monitoring device | |
| CN107219392A (en) | A kind of real-time current signal-data processing system | |
| CN203732929U (en) | Energy source data acquisition terminal | |
| CN202994876U (en) | Micro-signal acquisition card | |
| CN204228936U (en) | A kind of field signal detection system | |
| CN208458665U (en) | A kind of Precision positioning circuit | |
| CN204043993U (en) | A kind of input control system of tension tester | |
| CN202126267U (en) | Electronic measurement device | |
| CN207586308U (en) | A kind of measuring circuit for acquiring bi-directional voltage signal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20160518 Termination date: 20201229 |