CN205228686U - Ressure measurement appearance - Google Patents
Ressure measurement appearance Download PDFInfo
- Publication number
- CN205228686U CN205228686U CN201521094296.4U CN201521094296U CN205228686U CN 205228686 U CN205228686 U CN 205228686U CN 201521094296 U CN201521094296 U CN 201521094296U CN 205228686 U CN205228686 U CN 205228686U
- Authority
- CN
- China
- Prior art keywords
- resistance
- slide
- operational amplifier
- chip microcomputer
- changing resistor
- 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
Abstract
Ressure measurement appearance. The utility model relates to a ressure measurement appearance. Resistance R2's other end parallel resistance R6 and operational amplifier A1's non -inverting input end, operational amplifier A1's port 1 connect the positive voltage end, operational amplifier A1's port 2 connect the negative voltages end, operational amplifier A1's port 3 connect the one end that smooth transformers hinder rf5, the smooth transformer other end that hinders rf5 connect operational amplifier A1's port 4, resistance R3's the other end parallelly connected operational amplifier A1's negative phase input and resistance R4's one end, resistance R4 other end parallel resistance R5 one end with operational amplifier A1's output, resistance R5's the parallelly connected signal output part of the other end and electric capacity C1's one end, electric capacity C1's other end ground connection. The utility model is used for ressure measurement.
Description
Technical field
The utility model relates to a kind of pressure-measuring device.
Background technology
Pressure survey has great importance to Real-Time Monitoring and safety in production, in the industrial production, in order to make laughs, keep the safety in production, each condition in necessary effectively production control process, because Stress control plays decisive role in process of production, therefore measure pressure accurately and just seem particularly important.
Summary of the invention
The purpose of this utility model is to provide a kind of pressure-measuring device, can accurately measured pressure value, and SD can be utilized to stick into the follow-up file of the convenient storage of row data and record, strengthens the antijamming capability of pressure-measuring device.
above-mentioned object is realized by following technical scheme:
A kind of pressure-measuring device, its composition comprises: pressure transducer, single-chip microcomputer, it is characterized in that: described pressure transducer comprises shell body and probe, the signal of the probe collection of described pressure transducer passes to described single-chip microcomputer by amplifying circuit, described single-chip microcomputer also receives the signal that keyboard circuit sends, described single-chip microcomputer also receives the signal that SD card memory circuit sends, and described single-chip microcomputer is to liquid crystal display circuit transmission of signal; Load signal acquisition circuit in described probe, described signal acquisition circuit comprises direct-current input power supplying, described direct-current input power supplying slide-changing resistor R in parallel
f1one end and slide-changing resistor R
f2one end, described slide-changing resistor R
f1other end slide-changing resistor R in parallel
f3one end and one end of resistance R2, described slide-changing resistor R
f2other end slide-changing resistor R in parallel
f4one end and one end of resistance R3, the other end parallel resistance R6 of described resistance R2 and the normal phase input end of operational amplifier A 1, the port one of described operational amplifier A 1 connects positive voltage terminal, the port 2 of described operational amplifier A 1 connects negative voltage side, and the port 3 of described operational amplifier A 1 connects slide-changing resistor R
f5one end, described slide-changing resistor R
f5the other end connect described in the port 4 of operational amplifier A 1, the negative-phase input of the operational amplifier A 1 described in other end parallel connection of described resistance R3 and one end of resistance R4, one end of the other end parallel resistance R5 of described resistance R4 and the output terminal of described operational amplifier A 1, the other end parallel signal output terminal of described resistance R5 and one end of electric capacity C1, the other end ground connection of described electric capacity C1.
Described pressure-measuring device, the SPI interface of described single-chip microcomputer connects SD card driving circuit, No. 6 pins of described SD card connect power supply, No. 7 pin ground connection of described SD card, No. 11 pin brace choosings of described SD card, No. 12 pins of described SD card connect clock, No. 13 pin connection data output lines of described SD card, No. 14 pin connection data input lines of described SD card.
Described pressure-measuring device, No. 3 pins of described single-chip microcomputer connect slide-changing resistor R
f6one end, described slide-changing resistor R
f6the other end connect negative voltage and export VOUT, the emitter e of No. 17 pin connecting triode Q1 of described single-chip microcomputer, the collector c of described triode Q1 connects slide-changing resistor R
f7sliding end, described slide-changing resistor R
f7connect power positive end VCC; No. 19 pins in parallel electric capacity C2 of described single-chip microcomputer and resistance R7.
beneficial effect:
1. the utility model can accurately measured pressure value, and SD can be utilized to stick into the follow-up file of the convenient storage of row data and record, strengthens the antijamming capability of pressure-measuring device.
2. circuit structure of the present utility model is simple, and cost is low, stable performance and anti-jamming effectiveness is good.
3. the measuring accuracy that improves of the present utility model helps user to reduce measuring error.
accompanying drawing illustrates:
Accompanying drawing 1 is schematic flow sheet of the present utility model.
Accompanying drawing 2 is pressure sensor signal acquisition circuit figure of the present utility model.
Accompanying drawing 3 is SD card of the present utility model and single-chip microcomputer connection layout.
Accompanying drawing 4 is display circuit of the present utility model and single-chip microcomputer connection layout.
embodiment:
embodiment 1
Composition graphs 1,2 explanation, a kind of pressure-measuring device, its composition comprises: pressure transducer, single-chip microcomputer, described pressure transducer comprises shell body and probe, the signal of the probe collection of described pressure transducer passes to described single-chip microcomputer by amplifying circuit, described single-chip microcomputer also receives the signal that keyboard circuit sends, and described single-chip microcomputer also receives the signal that SD card memory circuit sends, and described single-chip microcomputer is to liquid crystal display circuit transmission of signal; Load signal acquisition circuit in described probe, described signal acquisition circuit comprises direct-current input power supplying, described direct-current input power supplying slide-changing resistor R in parallel
f1one end and slide-changing resistor R
f2one end, described slide-changing resistor R
f1other end slide-changing resistor R in parallel
f3one end and one end of resistance R2, described slide-changing resistor R
f2other end slide-changing resistor R in parallel
f4one end and one end of resistance R3, the other end parallel resistance R6 of described resistance R2 and the normal phase input end of operational amplifier A 1, the port one of described operational amplifier A 1 connects positive voltage terminal, the port 2 of described operational amplifier A 1 connects negative voltage side, and the port 3 of described operational amplifier A 1 connects slide-changing resistor R
f5one end, described slide-changing resistor R
f5the other end connect described in the port 4 of operational amplifier A 1, the negative-phase input of the operational amplifier A 1 described in other end parallel connection of described resistance R3 and one end of resistance R4, one end of the other end parallel resistance R5 of described resistance R4 and the output terminal of described operational amplifier A 1, the other end parallel signal output terminal of described resistance R5 and one end of electric capacity C1, the other end ground connection of described electric capacity C1.
embodiment 2
Composition graphs 3 illustrates, pressure-measuring device described in embodiment 1, the SPI interface of described single-chip microcomputer connects SD card driving circuit, No. 6 pins of described SD card connect power supply, No. 7 pin ground connection of described SD card, No. 11 pin brace choosings of described SD card, No. 12 pins of described SD card connect clock, No. 13 pin connection data output lines of described SD card, No. 14 pin connection data input lines of described SD card.
embodiment 3
Composition graphs 4 illustrates, the pressure-measuring device described in embodiment 1, and No. 3 pins of described single-chip microcomputer connect slide-changing resistor R
f6one end, described slide-changing resistor R
f6the other end connect negative voltage and export VOUT, the emitter e of No. 17 pin connecting triode Q1 of described single-chip microcomputer, the collector c of described triode Q1 connects slide-changing resistor R
f7sliding end, described slide-changing resistor R
f7connect power positive end VCC; No. 19 pins in parallel electric capacity C2 of described single-chip microcomputer and resistance R7.
Certainly; above-mentioned explanation is not to restriction of the present utility model; the utility model is also not limited in above-mentioned citing, the change that those skilled in the art make in essential scope of the present utility model, remodeling, interpolation or replacement, also should belong to protection domain of the present utility model.
Claims (3)
1. a pressure-measuring device, its composition comprises: pressure transducer, single-chip microcomputer, it is characterized in that: described pressure transducer comprises shell body and probe, the signal of the probe collection of described pressure transducer passes to described single-chip microcomputer by amplifying circuit, described single-chip microcomputer also receives the signal that keyboard circuit sends, described single-chip microcomputer also receives the signal that SD card memory circuit sends, and described single-chip microcomputer is to liquid crystal display circuit transmission of signal; Load signal acquisition circuit in described probe, described signal acquisition circuit comprises direct-current input power supplying, described direct-current input power supplying slide-changing resistor R in parallel
f1one end and slide-changing resistor R
f2one end, described slide-changing resistor R
f1other end slide-changing resistor R in parallel
f3one end and one end of resistance R2, described slide-changing resistor R
f2other end slide-changing resistor R in parallel
f4one end and one end of resistance R3, the other end parallel resistance R6 of described resistance R2 and the normal phase input end of operational amplifier A 1, the port one of described operational amplifier A 1 connects positive voltage terminal, the port 2 of described operational amplifier A 1 connects negative voltage side, and the port 3 of described operational amplifier A 1 connects slide-changing resistor R
f5one end, described slide-changing resistor R
f5the other end connect described in the port 4 of operational amplifier A 1, the negative-phase input of the operational amplifier A 1 described in other end parallel connection of described resistance R3 and one end of resistance R4, one end of the other end parallel resistance R5 of described resistance R4 and the output terminal of described operational amplifier A 1, the other end parallel signal output terminal of described resistance R5 and one end of electric capacity C1, the other end ground connection of described electric capacity C1.
2. pressure-measuring device according to claim 1, it is characterized in that: the SPI interface of described single-chip microcomputer connects SD card driving circuit, No. 6 pins of described SD card connect power supply, No. 7 pin ground connection of described SD card, No. 11 pin brace choosings of described SD card, No. 12 pins of described SD card connect clock, No. 13 pin connection data output lines of described SD card, No. 14 pin connection data input lines of described SD card.
3. pressure-measuring device according to claim 1, is characterized in that: No. 3 pins of described single-chip microcomputer connect slide-changing resistor R
f6one end, described slide-changing resistor R
f6the other end connect negative voltage and export VOUT, the emitter e of No. 17 pin connecting triode Q1 of described single-chip microcomputer, the collector c of described triode Q1 connects slide-changing resistor R
f7sliding end, described slide-changing resistor R
f7connect power positive end VCC; No. 19 pins in parallel electric capacity C2 of described single-chip microcomputer and resistance R7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521094296.4U CN205228686U (en) | 2015-12-26 | 2015-12-26 | Ressure measurement appearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521094296.4U CN205228686U (en) | 2015-12-26 | 2015-12-26 | Ressure measurement appearance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205228686U true CN205228686U (en) | 2016-05-11 |
Family
ID=55903743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521094296.4U Expired - Fee Related CN205228686U (en) | 2015-12-26 | 2015-12-26 | Ressure measurement appearance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205228686U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107024261A (en) * | 2017-04-07 | 2017-08-08 | 成都缔客行势网络科技有限公司 | Simple light minisize electronic scales |
-
2015
- 2015-12-26 CN CN201521094296.4U patent/CN205228686U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107024261A (en) * | 2017-04-07 | 2017-08-08 | 成都缔客行势网络科技有限公司 | Simple light minisize electronic scales |
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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 |
Granted publication date: 20160511 Termination date: 20171226 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |