CN206656785U - SCM Based electronic scale - Google Patents
SCM Based electronic scale Download PDFInfo
- Publication number
- CN206656785U CN206656785U CN201720355478.5U CN201720355478U CN206656785U CN 206656785 U CN206656785 U CN 206656785U CN 201720355478 U CN201720355478 U CN 201720355478U CN 206656785 U CN206656785 U CN 206656785U
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- resistance
- amplifier
- circuit
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- electronic scale
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Abstract
The utility model discloses SCM Based electronic scale, including single-chip microcomputer, data acquisition module, amplifying circuit, power circuit, button, LED display module and voice module, the data acquisition module, amplifying circuit, single-chip microcomputer are sequentially connected, and the power circuit, button, LED display module and voice module are connected with single-chip microcomputer respectively.The utility model is gathered because of voltage signal caused by pressure change using pressure sensor, amplifies by voltage amplifier circuit, data signal is then sent into single-chip microcomputer.Single-chip microcomputer is drawn the weight and total value of currently known article, then shown again, the function of electronic scale has been reached using simplified structure, be advantageous to the maintenance of electronic scale after corresponding processing.
Description
Technical field
It the utility model is related to electronic scale, and in particular to SCM Based electronic scale.
Background technology
Weighing technology is just valued by the people since ancient times, as a kind of measurement means, is widely used in industrial or agricultural, section
Grind, traffic, the every field such as domestic and foreign trade, it is closely coupled with the life of the people.Electronic scale is one kind in electronic scale, weighing apparatus
It is that constitutional law determines measurement instrument, is national economy, national defense construction, scientific research, the indispensable measuring equipment of domestic and foreign trade, weighs
The horizontal height of device product technology, by the modernization level for directly affecting all trades and professions and the raising of economic results in society.
The evolution of electronic scale as other things, also experienced from simple to complex, by it is coarse to it is accurate, by machine
Tool arrives all electronic to electric-mechanic control system, by simple function to multi-functional process again.Since particularly nearly 30 years, in technological process
Scene weigh, the work such as the monitoring of dispensing quantitative weighing and product quality, all be unable to do without the electronic scale that can export electric signal
Device.This is due to that electronic scale can not only be to mass or weight signal, and can be held as a unit in total system
Control and checking function are carried on a shoulder pole, so as to the automation and rationalization that promote industrial production and trade is associated.In the prior art, electronics
The structure of scale is complex, causes cost high, maintenance difficult.
Utility model content
Technical problem to be solved in the utility model is electronic balance structure complexity, and it is an object of the present invention to provide SCM Based
Electronic scale, simplify the structure of electronic scale, the maintenance of the electronic scale be advantageous to while the function of electronic scale is realized.
The utility model is achieved through the following technical solutions：
SCM Based electronic scale, including single-chip microcomputer, data acquisition module, amplifying circuit, power circuit, button, LED
Display module and voice module, the data acquisition module, amplifying circuit, single-chip microcomputer are sequentially connected, and the power circuit, are pressed
Key, LED display module and voice module are connected with single-chip microcomputer respectively.The system is mainly controlled by single-chip microcomputer, measures object weight
Amount part is made up of data acquisition module and amplifying circuit, and plus LED display module, this electronic scale has been had, and structure is simplified, property
Can price than it is high, low in energy consumption, system design is simple, the directly perceived, spy such as speed is fast, measurement is accurate, automaticity is high easy to use
Point.
Further, amplifying circuit include amplifier A1, amplifier A2, amplifier A3, resistance R1, resistance R2, resistance R3,
Resistance R4, resistance R5, resistance R6, resistance R7, electric capacity C1, electric capacity C2, input V1, input V2 and output end vo, it is described to put
Big device A2 electrode input end is input V2, and described resistance R1 one end is connected with amplifier A2 negative input, and its is another
End is connected with amplifier A1 negative input, and amplifier A1 electrode input end is input V1, and described resistance R3 one end connects
It is connected on the circuit that resistance R1 is connected with amplifier A2, the output end of its other end and amplifier A2；Resistance R2 one end is connected to
On the circuit that resistance R1 is connected with amplifier A1, its other end is connected to amplifier A1 output end；Resistance R4 one end is connected to
On the circuit that resistance R2 is connected with amplifier A1 output end, its other end is connected with resistance R5；Resistance R5 is connected with resistance R4
The other end at end is connected on the circuit that resistance R3 is connected with amplifier A3 output end；Electric capacity C1 one end be connected to resistance R4 with
On the circuit of amplifier A1 connections, its other end is connected with amplifier A3 positive input；Electric capacity C2 one end is connected to resistance
On the circuit that R5 is connected with amplifier A2, its other end is connected to amplifier A3 inverse output terminal；Resistance R6 one end is connected to
On the circuit that electric capacity C1 is connected with amplifier A3, its other end is connected on the circuit that resistance R4 is connected with resistance R5；Resistance R7
There is single connection on the circuit that resistance R6 is connected with resistance R5, its other end is connected to the circuit that electric capacity C2 is connected with amplifier A3
On, amplifier A3 output end connection output end vo.Amplifier A1 and A2 form parallel connection type differential amplifier so that input impedance
Infinity, common-mode rejection ratio are also infinity.
Further, amplifier A1 and amplifier A2 uses TLC071.
Further, amplifier A3 uses INA128.
Further, data acquisition module includes amplifier U2A, amplifier U2B, amplifier U2C, resistance R9, resistance
R10, resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, resistance R16, resistance R17, resistance R18, resistance R19,
Resistance R20, power supply B1, signal output part OUT, the resistance R18, resistance R20, resistance R19 are sequentially connected, resistance R18 and electricity
The other end for hindering 20 connection ends is connected with amplifier U2A positive input, the resistance R19 and resistance R20 connection ends it is another
One end is connected with amplifier U2B positive input；Described resistance R17 one end is connected to what resistance R19 was connected with amplifier U2B
On circuit, its other end is connected with resistance R16；The other end of resistance R16 and resistance R17 connection ends be connected to amplifier U2A with
On the circuit of resistance R18 connections；Power supply B1 negative pole end is connected on the circuit that resistance R20 is connected with resistance R18, and its positive pole connects
It is connected on the circuit that resistance R16 is connected with resistance R17；Resistance R15 one end is connected to amplifier U2A reverse input end, and its is another
One end is connected to amplifier U2B reverse input end；Resistance R14 one end is connected to the circuit that resistance R15 is connected with amplifier U2B
On, its other end is connected to amplifier U2B output end；Resistance R13 one end is connected to what resistance R15 was connected with amplifier U2A
On circuit, its other end is connected to amplifier U2A output end；Resistance R12 one end is connected to amplifier U2B output end, its
The other end is connected to amplifier U2C positive input；Resistance R11 one end is connected to amplifier U2A output end, its other end
It is connected to amplifier U2C reverse input end；Resistance R9 one end is connected on the circuit that resistance R11 is connected with amplifier U2C, its
The other end is connected to amplifier U2C output end while connects a signal input part of pressure sensor；Resistance R10 one end connects
It is connected on the circuit that resistance R12 is connected with amplifier U2C, its other end connects another signal input part of pressure sensor.
The utility model compared with prior art, has the following advantages and advantages：The utility model utilizes pressure
Sensor collection is amplified by voltage amplifier circuit, then data signal is sent into single because of voltage signal caused by pressure change
Piece machine.Single-chip microcomputer draws the weight and total value of currently known article, then shown again after corresponding processing, utilizes
Simplified structure has reached the function of electronic scale, is advantageous to the maintenance of electronic scale.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the utility model embodiment, forms the one of the application
Part, the restriction to the utility model embodiment is not formed.In the accompanying drawings：
Fig. 1 is the utility model structure diagram；
Fig. 2 is the utility model amplification circuit structure schematic diagram；
Fig. 3 is the utility model data acquisition module structural representation；
Embodiment
For the purpose of this utility model, technical scheme and advantage is more clearly understood, with reference to embodiment and accompanying drawing,
The utility model is described in further detail, and exemplary embodiment of the present utility model and its explanation are only used for explaining this
Utility model, it is not intended as to restriction of the present utility model.
Embodiment
As shown in figure 1, SCM Based electronic scale, including single-chip microcomputer, data acquisition module, amplifying circuit, power supply electricity
Road, button, LED display module and voice module, the data acquisition module, amplifying circuit, single-chip microcomputer are sequentially connected, the electricity
Source circuit, button, LED display module and voice module are connected with single-chip microcomputer respectively.
As shown in Fig. 2 amplifying circuit includes amplifier A1, amplifier A2, amplifier A3, resistance R1, resistance R2, resistance
R3, resistance R4, resistance R5, resistance R6, resistance R7, electric capacity C1, electric capacity C2, input V1, input V2 and output end vo, it is described
Amplifier A2 electrode input end is input V2, and described resistance R1 one end is connected with amplifier A2 negative input, and its is another
One end is connected with amplifier A1 negative input, and amplifier A1 electrode input end is input V1, described resistance R3 one end
It is connected on the circuit that resistance R1 is connected with amplifier A2, the output end of its other end and amplifier A2；Resistance R2 one end connects
On the circuit that resistance R1 is connected with amplifier A1, its other end is connected to amplifier A1 output end；Resistance R4 one end connects
On the circuit that resistance R2 is connected with amplifier A1 output end, its other end is connected with resistance R5；Resistance R5 and resistance R4 connects
The other end for connecing end is connected on the circuit that resistance R3 is connected with amplifier A3 output end；Electric capacity C1 one end is connected to resistance R4
On the circuit being connected with amplifier A1, its other end is connected with amplifier A3 positive input；Electric capacity C2 one end is connected to electricity
On the circuit that resistance R5 is connected with amplifier A2, its other end is connected to amplifier A3 inverse output terminal；Resistance R6 one end connects
On the circuit that electric capacity C1 is connected with amplifier A3, its other end is connected on the circuit that resistance R4 is connected with resistance R5；Resistance
R7 has single connection on the circuit that resistance R6 is connected with resistance R5, and its other end is connected to the line that electric capacity C2 is connected with amplifier A3
Lu Shang, amplifier A3 output end connection output end vo.Amplifier A1 and amplifier A2 uses TLC071.Amplifier A3 is used
INA128。
As shown in figure 3, data acquisition module include pressure pressure sensor, amplifier U2A, amplifier U2B, amplifier U2C,
Resistance R9, resistance R10, resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, resistance R16, resistance R17, resistance
R18, resistance R19, resistance R20, power supply B1, the resistance R18, resistance R20, resistance R19 are sequentially connected, resistance R18 and resistance
The other end of 20 connection ends is connected with amplifier U2A positive input, the resistance R19 and resistance R20 connection ends it is another
End is connected with amplifier U2B positive input；Described resistance R17 one end is connected to the line that resistance R19 is connected with amplifier U2B
Lu Shang, its other end are connected with resistance R16；Resistance R16 and the other end of resistance R17 connection ends are connected to amplifier U2A and electricity
On the circuit for hindering R18 connections；Power supply B1 negative pole end is connected on the circuit that resistance R20 is connected with resistance R18, the connection of its positive pole
On the circuit that resistance R16 is connected with resistance R17；Resistance R15 one end is connected to amplifier U2A reverse input end, and its is another
End is connected to amplifier U2B reverse input end；Resistance R14 one end is connected to the circuit that resistance R15 is connected with amplifier U2B
On, its other end is connected to amplifier U2B output end；Resistance R13 one end is connected to what resistance R15 was connected with amplifier U2A
On circuit, its other end is connected to amplifier U2A output end；Resistance R12 one end is connected to amplifier U2B output end, its
The other end is connected to amplifier U2C positive input；Resistance R11 one end is connected to amplifier U2A output end, its other end
It is connected to amplifier U2C reverse input end；Resistance R9 one end is connected on the circuit that resistance R11 is connected with amplifier U2C, its
The other end is connected to amplifier U2C output end while connects a signal input part of pressure sensor；Resistance R10 one end connects
It is connected on the circuit that resistance R12 is connected with amplifier U2C, its other end connects another signal input part of pressure sensor.
Data acquisition module is using weighing sensor detection pressure signal, and obtaining faint electric signal, (the design is electricity
Press signal), and after through process circuit (amplifying circuit) processing after, send single chip part to pass through computing, convert a signal into object
Actual weight signal, and be stored in memory cell.Single-chip microcomputer can also be by the control to expansion I/O, to keyboard
It is scanned, then whole system is controlled by keyboard.LED display module realizes display function as needed.Voice
Module can quote weight of object with voice.
Above-described embodiment, the purpose of this utility model, technical scheme and beneficial effect are entered
One step describes in detail, should be understood that and the foregoing is only specific embodiment of the present utility model, is not used to limit
Determine the scope of protection of the utility model, it is all within the spirit and principles of the utility model, any modification for being made, equally replace
Change, improve, should be included within the scope of protection of the utility model.
Claims (5)
1. SCM Based electronic scale, it is characterised in that including single-chip microcomputer, data acquisition module, amplifying circuit, power supply electricity
Road, button, LED display module and voice module, the data acquisition module, amplifying circuit, single-chip microcomputer are sequentially connected, the electricity
Source circuit, button, LED display module and voice module are connected with single-chip microcomputer respectively.
2. SCM Based electronic scale according to claim 1, it is characterised in that the amplifying circuit includes amplifier
A1, amplifier A2, amplifier A3, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, electric capacity C1,
Electric capacity C2, input V1, input V2 and output end vo, the electrode input end of the amplifier A2 are input V2, the electricity
Resistance R1 one end is connected with amplifier A2 negative input, and its other end is connected with amplifier A1 negative input, amplifier
A1 electrode input end is input V1, and described resistance R3 one end is connected on the circuit that resistance R1 is connected with amplifier A2, its
The output end of the other end and amplifier A2；Resistance R2 one end is connected on the circuit that resistance R1 is connected with amplifier A1, and its is another
End is connected to amplifier A1 output end；Resistance R4 one end is connected to the circuit that resistance R2 is connected with amplifier A1 output end
On, its other end is connected with resistance R5；Resistance R5 and the other end of resistance R4 connection ends are connected to resistance R3 and amplifier A3's
On the circuit of output end connection；Electric capacity C1 one end is connected on the circuit that resistance R4 is connected with amplifier A1, and its other end is with putting
Big device A3 positive input connection；Electric capacity C2 one end is connected on the circuit that resistance R5 is connected with amplifier A2, its other end
It is connected to amplifier A3 inverse output terminal；Resistance R6 one end is connected on the circuit that electric capacity C1 is connected with amplifier A3, and its is another
One end is connected on the circuit that resistance R4 is connected with resistance R5；Resistance R7 has the circuit that single connection is connected in resistance R6 with resistance R5
On, its other end is connected on the circuit that electric capacity C2 is connected with amplifier A3, amplifier A3 output end connection output end vo.
3. SCM Based electronic scale according to claim 2, it is characterised in that the amplifier A1 and amplifier A2
Use TLC071.
4. SCM Based electronic scale according to claim 2, it is characterised in that the amplifier A3 is used
INA128。
5. SCM Based electronic scale according to claim 1, it is characterised in that the data acquisition module includes pressure
Force snesor, amplifier U2A, amplifier U2B, amplifier U2C, resistance R9, resistance R10, resistance R11, resistance R12, resistance
R13, resistance R14, resistance R15, resistance R16, resistance R17, resistance R18, resistance R19, resistance R20, power supply B1, the resistance
R18, resistance R20, resistance R19 are sequentially connected, and the other end of resistance R18 and the connection end of resistance 20 is positive defeated with amplifier U2A's
Enter end connection, the resistance R19 is connected with the other end of resistance R20 connection ends with amplifier U2B positive input；The electricity
Resistance R17 one end is connected on the circuit that resistance R19 is connected with amplifier U2B, and its other end is connected with resistance R16；Resistance R16 with
The other end of resistance R17 connection ends is connected on the circuit that amplifier U2A is connected with resistance R18；Power supply B1 negative pole end connection
On the circuit that resistance R20 is connected with resistance R18, its positive pole is connected on the circuit that resistance R16 is connected with resistance R17；Resistance
R15 one end is connected to amplifier U2A reverse input end, and its other end is connected to amplifier U2B reverse input end；Resistance
R14 one end is connected on the circuit that resistance R15 is connected with amplifier U2B, and its other end is connected to amplifier U2B output end；
Resistance R13 one end is connected on the circuit that resistance R15 is connected with amplifier U2A, and its other end is connected to amplifier U2A output
End；Resistance R12 one end is connected to amplifier U2B output end, and its other end is connected to amplifier U2C positive input；Electricity
Resistance R11 one end is connected to amplifier U2A output end, and its other end is connected to amplifier U2C reverse input end；Resistance R9 mono-
End is connected on the circuit that resistance R11 is connected with amplifier U2C, and its other end is connected to amplifier U2C output end while connected
Connect a signal input part of pressure sensor；Resistance R10 one end is connected on the circuit that resistance R12 is connected with amplifier U2C,
Its other end connects another signal input part of pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720355478.5U CN206656785U (en) | 2017-04-07 | 2017-04-07 | SCM Based electronic scale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720355478.5U CN206656785U (en) | 2017-04-07 | 2017-04-07 | SCM Based electronic scale |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206656785U true CN206656785U (en) | 2017-11-21 |
Family
ID=60317305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720355478.5U Expired - Fee Related CN206656785U (en) | 2017-04-07 | 2017-04-07 | SCM Based electronic scale |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206656785U (en) |
Cited By (2)
| 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 |
| CN108827440A (en) * | 2018-04-10 | 2018-11-16 | 南京邮电大学 | A kind of Precision Electronics Balance based on INA128 amplifier |
-
2017
- 2017-04-07 CN CN201720355478.5U patent/CN206656785U/en not_active Expired - Fee Related
Cited By (2)
| 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 |
| CN108827440A (en) * | 2018-04-10 | 2018-11-16 | 南京邮电大学 | A kind of Precision Electronics Balance based on INA128 amplifier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20171121 Termination date: 20180407 |