CN206300715U - A kind of high-accuracy multifunctional beam type weighing device - Google Patents
A kind of high-accuracy multifunctional beam type weighing device Download PDFInfo
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- CN206300715U CN206300715U CN201621402311.1U CN201621402311U CN206300715U CN 206300715 U CN206300715 U CN 206300715U CN 201621402311 U CN201621402311 U CN 201621402311U CN 206300715 U CN206300715 U CN 206300715U
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Abstract
A kind of high-accuracy multifunctional beam type weighing device that the utility model is provided, including controller, full-bridge circuit and A/D converter, the controller includes single-chip microcomputer, the single-chip microcomputer is connected with full-bridge circuit and A/D converter respectively, wherein, the full-bridge circuit is used to for the deformation of cantilever beam to be converted to electricity；It is digital quantity that the A/D converter is used to the electricity conversion of full-bridge circuit；The controller is used to realize signal acquisition, treatment and shows.The utility model realizes the underslung weighting manner of steel cantilever beam, and the weighting manner possesses the measurement function of 5.00g~500g weight, wherein, when weight is less than 50g, weighting error is less than 0.5g, and in more than 50g, weighting error is less than 1g to weight；The utility model realizes the real-time detection of multi-path pressure；Its measurement weight range is wide, and certainty of measurement is high.
Description
Technical field
The utility model belongs to electronic measuring technology field, is related to a kind of high-accuracy multifunctional beam type weighing device.
Background technology
Traditional beam type weighing device is main based on pellet type, and adhering resistance formula foil gauge is constituted on a cantilever beam
Weighing sensor, is measurable electric signal by quality conversion using the deformation of sensor.Its cantilever beam composition material is mainly
The weighing sensor of aluminium alloy, it is adaptable to electronic price computing scale, platform scale, counter scale etc.；Cantilever beam sensor with steel as material is fitted
For belted electronic balance, screening scale.And the suspension type high-precision electronic balance that is designed as cantilever material with steel is then less；It is general
Store-through is low in certainty of measurement, does not possess amount of money accumulation function.
The content of the invention
The purpose of this utility model is to provide a kind of high-accuracy multifunctional beam type weighing device, is solved existing outstanding
Arm beam type weighing device exists low in certainty of measurement, does not possess the defects such as the amount of money is cumulative.
In order to achieve the above object, the technical solution adopted in the utility model is specific as follows：
A kind of high-accuracy multifunctional beam type weighing device that the utility model is provided, including controller, full-bridge circuit
And A/D converter, the controller includes single-chip microcomputer, and the single-chip microcomputer is connected with full-bridge circuit and A/D converter respectively, its
In, the full-bridge circuit is used to for the deformation of cantilever beam to be converted to electricity；The A/D converter is used to the electricity of full-bridge circuit
Be converted to digital quantity；The controller is used to realize signal acquisition, treatment and shows.
Preferably, the full-bridge circuit includes the 5th resistance, the 6th resistance, the 7th resistance and the 8th resistance, and described the
Five resistance, the 6th resistance, the 7th resistance and the 8th resistance are symmetrically connected in the form of full-bridge, the first pin of the full-bridge circuit
5V and ground are met respectively with the 3rd pin.
Preferably, the 5th resistance, the 6th resistance, the 7th resistance and the 8th resistance are 120 ohm of foil resistance
Foil gauge, the resistance strain gage is installed on a cantilever beam.
Preferably, the first pin of the A/D converter and the 16th pin are connected to 5V, the positive pole of the 4th electric capacity,
The emitter stage of one triode, wherein the other end ground connection of the first triode and the 4th electric capacity；The second pin of the A/D converter
Connect the base stage of the first triode；3rd pin of the A/D converter connects the colelctor electrode of the first triode, the positive pole of the 5th electric capacity
With one end of 3rd resistor, the negative pole of the 5th electric capacity connects the 4th resistance, the 5th pin of A/D converter and the 6th electric capacity
Positive pole, the other end and the 4th pin of A/D converter of another termination 3rd resistor of the 4th resistance, the 6th electric capacity
Negative pole connect the 6th pin of A/D converter；11st pin of the A/D converter and the 12nd pin connect single-chip microcomputer respectively
The 5th pin and the 4th pin；14th pin of the A/D converter and the 15th pin are altogether.
Preferably, the Single-chip Controlling has LCD display circuit, and the second pin of the LCD display circuit, the 4th draw
Pin, the 17th pin and the 19th pin meet+5V, the first pin of the LCD display circuit, the 15th pin and the 20th
Pin is altogether；3rd pin of the LCD display circuit connects the output end of slide rheostat, the another two ends of the slide rheostat
5V and ground are connect respectively；5th pin of the LCD display circuit be data input/output end, its second pin for connecing single-chip microcomputer,
6th pin of the LCD display circuit is clock end, its first pin for connecing single-chip microcomputer.
Preferably, the 9th pin of the single-chip microcomputer is reset terminal, and it is divided into three tunnels, and one end, first of button are connect respectively
The positive pole of the negative pole of electric capacity and one end of second resistance, the other end of the button and the first electric capacity meets 5V, second resistance
The other end is grounded, and realizes that upper electricity automatically resets using the discharge and recharge of the first electric capacity, and the break-make of button realizes hand-reset.
Preferably, the 18th pin and the 19th pin of the single-chip microcomputer are clock signal input terminal, wherein, it is described
18th pin connects one end of the first oscillator and one end of the second electric capacity respectively；19th pin connects the first vibration respectively
The other end of device and the 3rd one end, meanwhile, the other end of second electric capacity and the 3rd electric capacity is altogether；The of the single-chip microcomputer
20 pins are grounded, and the 31st pin and the 40th pin meet 5V.
Preferably, the Single-chip Controlling has matrix keyboard, and the matrix keyboard includes four rows, four row buttons, wherein,
The line of first~fourth line of the matrix keyboard is respectively connected to the 28th pin~the 25th pin of single-chip microcomputer；Institute
The alignment for stating the first~the 4th row of matrix keyboard is respectively connected to the 24th pin~the 21st pin of single-chip microcomputer.
Preferably, the single-chip microcomputer has also controlled voice broadcast module, and the voice broadcast module includes voice broadcast core
Piece, first pin and the 4th pin of the voice broadcast chip connect 3.3V and ground respectively；The second of the voice broadcast chip
Pin, the 3rd pin and the 5th pin connect the 11st pin, the tenth pin and the 15th pin of controller single-chip microcomputer respectively.
Compared with prior art, the beneficial effects of the utility model are：
A kind of high-accuracy multifunctional beam type weighing device that the utility model is provided, including controller, full-bridge circuit
And A/D converter, the controller includes single-chip microcomputer, and the single-chip microcomputer is connected with full-bridge circuit and A/D converter respectively, its
In, the full-bridge circuit is used to for the deformation of cantilever beam to be converted to electricity；The A/D converter is used to the electricity of full-bridge circuit
Be converted to digital quantity；The controller is used to realize signal acquisition, treatment and shows.The utility model realizes steel cantilever beam
Underslung weighting manner, the weighting manner possesses the measurement function of 5.00g~500g weight, wherein, when weight is less than 50g
When, weighting error is less than 0.5g, and in more than 50g, weighting error is less than 1g to weight；The utility model realizes multi-path pressure
Real-time detection；Its measurement weight range is wide, and certainty of measurement is high.
Further, the LCD display in the utility model uses serial transmission mode, is saved while simplifying circuit
The I/O port resource of controller.
Further, in the form of chinese disply and voice broadcast are combined, display format variation is made.
Brief description of the drawings
Fig. 1 is the structured flowchart of the utility model patent.
Fig. 2 is the circuit diagram of the utility model patent.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and detailed description, but the utility model patent is not
It is limited to these embodiments.
Fig. 1 is the structured flowchart of the utility model patent.Controller is for controller realizes signal acquisition, treatment and shows；
Full-bridge circuit is made up of resistance strain gage, and the deformation of cantilever beam is converted into electricity；24 A/D converters are by the electricity of full-bridge circuit
Amount is converted to digital quantity and is processed by controller；Matrix keyboard realizes peeling, unit price and the cumulative setting of the amount of money；Clock circuit is control
The normal operation of device processed provides the clock of stabilization, is the premise that single chip computer device normally runs；Reset circuit realizes controller
Upper electricity or hand-reset；LCD display realizes weight, the display of the univalent and cumulative amount of money；SYN6288 voice broadcasts module is realized
The real-time broadcasting of display data in LCD display.The present embodiment is relied on into hardware and known software, by replacing full-bridge electricity
Road, it is possible to achieve to the real-time detection function of other non electrical quantities.
Wherein, the resistance strain gage be pasted in the form of full-bridge 40CR steel as cantilever beam stress change it is more obvious
Position, constitute suspension type cantilever beam weighting transducer, realize to the real-time detection of weight.
Full-bridge circuit of the present utility model is replaced with into the sensors such as gas, smog, formaldehyde, the utility model patent can be real
The real-time detection function of existing gas, smog, concentration of formaldehyde etc..
Referring to Fig. 2, the controller of the present embodiment is included using the single-chip microcomputer of STC89C52.9th pin of the single-chip microcomputer
It is reset terminal, it is divided into three tunnels, one end, the negative pole of the first electric capacity C1, one end of second resistance R2 of button S0 is connect respectively, it is described
The positive pole of the other end of button S0 and the first electric capacity C1 meets+5V, the other end ground connection of second resistance R2, using the first electric capacity C1
Discharge and recharge realize electrification reset, the break-make of button S0 realizes hand-reset.
18th pin of the single-chip microcomputer and the 19th pin are clock signal input terminal, wherein, the 18th pin point
One end of the first oscillator Y1 and one end of the second electric capacity C2 are not connect；19th pin connects the another of the first oscillator Y1 respectively
One end and one end of the 3rd C3, meanwhile, the other end of the second electric capacity C2 and the 3rd electric capacity C3 is the normal of single-chip microcomputer altogether
Operation provides the clock of stabilization, wherein the second electric capacity C2 and the 3rd electric capacity C3 is to open the electric capacity that shakes；The first oscillator Y1 is
The quartz crystal of 12MHz.The 20th pin ground connection of single-chip microcomputer, the 31st pin and the 40th pin meet+5V.
The full-bridge circuit of the present embodiment includes the 5th resistance R5, the 6th resistance R6, the 7th resistance R7 and the 8th resistance R8, institute
The 5th resistance R5, the 6th resistance R6, the 7th resistance R7 and foil resistance foil gauge that the 8th resistance R8 is 120 ohm are stated with full-bridge
Form symmetrically connect.First pin and the 3rd pin of the full-bridge circuit connect+5V and ground respectively；The second of full-bridge circuit is drawn
Pin and the 4th pin connect 24 the 7th pins and the 8th pin for being A/D converter respectively.The foil resistance strain gauge adhesion exists
Change obvious position after steel cantilever beam stress.
First pin of the A/D converter and the 16th pin are connected to+5V, the positive pole of the 4th electric capacity C4, positive-negative-positive
The emitter stage of one triode Q1, wherein the model 8550 of the first triode Q1, the other end ground connection of the 4th electric capacity C4；The A/
The second pin of D converters connects the base stage of the first triode Q1；3rd pin of A/D converter connects the current collection of the first triode Q1
One end of pole, the positive pole of the 5th electric capacity C5 and 3rd resistor R3, the negative pole of the 5th electric capacity C5 connects the 4th resistance R4, A/D converter
The 5th pin and the 6th electric capacity C6 positive pole, the other end and the 3rd monolithic of another termination 3rd resistor R3 of the 4th resistance R4
4th pin of machine U3, the negative pole of the 6th electric capacity C6 connects the 6th pin of A/D converter；Draw the 11st of the A/D converter
Pin and the 12nd pin connect the 5th pin and the 4th pin of single-chip microcomputer respectively；14th pin of the A/D converter and
15 pins are altogether.
Be suspended on the pulling force that testee below cantilever beam produces cause the resistance R5 of foil gauge the 5th, the 6th resistance R6,
7th resistance R7, the deformation of the 8th resistance R8, the resistance of foil gauge are changed due to deformation, cause to be input into the 3rd single-chip microcomputer U3
The 7th pin and the voltage of the 8th pin change, the voltage conversion of input is data signal by controlling by A/D converter
Device single-chip microcomputer is analyzed and treatment.
The matrix keyboard of the present embodiment arranges totally ten six press keys and constitutes by four rows four, and its numbering is S1~S16.Matrix keyboard
The line of first~fourth line be respectively connected to the 28th pin~the 25th pin of single-chip microcomputer；The first of matrix keyboard
The alignment of the~the four row is respectively connected to the 24th pin~the 21st pin of single-chip microcomputer.Matrix keyboard realizes peeling, list
The function that valency is set and the amount of money is cumulative and resets, compared with stand-alone keypad, the use of matrix keyboard saves connecing for controller U1
Mouth resource.
The model LCD12864 of the LCD display of the present embodiment.The second pin of the LCD display circuit, the 4th draw
Pin, the 17th pin and the 19th pin meet+5V, the first pin of the LCD display circuit, the 15th pin and the 20th
Pin is grounded, and its 3rd pin connects the output end of slide rheostat R1, the another two ends of slide rheostat R1 connect respectively+5V and
Ground, the regulation of the 4th single-chip microcomputer U4 contrasts, the 5th pin of the LCD display circuit are realized by adjusting slide rheostat R1
It is data input/output end, its second pin for connecing single-chip microcomputer, the 6th pin of the LCD display circuit is clock end, and it connects
First pin of single-chip microcomputer, the second pin of the clock pulses synchronization single-chip microcomputer produced by the first pin of single-chip microcomputer is input to
The data of the 5th pin of LCD display circuit.The display circuit saves single-chip microcomputer using the serial connection mode of LCD12864
I/O port resource, simplify hardware design.
The voice broadcast module of the present embodiment includes the voice broadcast chip of model SYN6288.The voice broadcast core
First pin and the 4th pin of piece connect+3.3V and ground respectively；The second pin of voice broadcast chip, the 3rd pin and the 5th draw
Pin connects the 11st pin, the tenth pin and the 15th pin of controller single-chip microcomputer respectively.Controller single-chip microcomputer sends to be synthesized
Text to voice broadcast module, text to the conversion of sound is realized, for reporting weight, unit price, the accumulated value of the amount of money and behaviour
Point out.
Claims (9)
1. a kind of high-accuracy multifunctional beam type weighing device, it is characterised in that：Turn including controller, full-bridge circuit and A/D
Parallel operation, the controller includes single-chip microcomputer, and the single-chip microcomputer is connected with full-bridge circuit and A/D converter respectively, wherein, it is described complete
Bridge circuit is used to for the deformation of cantilever beam to be converted to electricity；It is number that the A/D converter is used to the electricity conversion of full-bridge circuit
Word amount；The controller is used to realize signal acquisition, treatment and shows.
2. a kind of high-accuracy multifunctional beam type weighing device according to claim 1, it is characterised in that：The full-bridge
Circuit includes the 5th resistance (R5), the 6th resistance (R6), the 7th resistance (R7) and the 8th resistance (R8), and the 5th resistance
(R5), the 6th resistance (R6), the 7th resistance (R7) and the 8th resistance (R8) are symmetrically connected in the form of full-bridge, the full-bridge circuit
The first pin and the 3rd pin connect respectively 5V and ground.
3. a kind of high-accuracy multifunctional beam type weighing device according to claim 2, it is characterised in that：Described 5th
Resistance (R5), the 6th resistance (R6), the 7th resistance (R7) and the 8th resistance (R8) are 120 ohm of foil resistance foil gauge,
The resistance strain gage is installed on a cantilever beam.
4. a kind of high-accuracy multifunctional beam type weighing device according to claim 1, it is characterised in that：The A/D
First pin and the 16th pin of converter are connected to 5V, the positive pole of the 4th electric capacity (C4), the transmitting of the first triode (Q1)
Pole, wherein the other end ground connection of the first triode (Q1) and the 4th electric capacity (C4)；The second pin of the A/D converter connects first
The base stage of triode (Q1)；3rd pin of the A/D converter connects the colelctor electrode of the first triode (Q1), the 5th electric capacity (C5)
Positive pole and 3rd resistor (R3) one end, the negative pole of the 5th electric capacity (C5) connects the 4th resistance (R4), the of A/D converter
The positive pole of five pins and the 6th electric capacity (C6), the other end and A/ of another termination 3rd resistor (R3) of the 4th resistance (R4)
4th pin of D converters, the negative pole of the 6th electric capacity (C6) connects the 6th pin of A/D converter；The A/D converter
11st pin and the 12nd pin connect the 5th pin and the 4th pin of single-chip microcomputer respectively；The 14th of the A/D converter
Pin and the 15th pin are altogether.
5. a kind of high-accuracy multifunctional beam type weighing device according to claim 1, it is characterised in that：The monolithic
Machine control has LCD display circuit, the second pin of the LCD display circuit, the 4th pin, the 17th pin and the 19th pin
Meet+5V, the first pin of the LCD display circuit, the 15th pin and the 20th pin are altogether；The LCD display circuit
The 3rd pin connect the output end of slide rheostat (R1), the another two ends of the slide rheostat (R1) connect 5V and ground respectively；Institute
The 5th pin of LCD display circuit is stated for data input/output end, its second pin for connecing single-chip microcomputer, the LCD display circuit
The 6th pin be clock end, its first pin for connecing single-chip microcomputer.
6. a kind of high-accuracy multifunctional beam type weighing device according to claim 1, it is characterised in that：The monolithic
9th pin of machine is reset terminal, and it is divided into three tunnels, and one end, the negative pole and second of the first electric capacity (C1) of button (S0) are connect respectively
One end of resistance (R2), the other end of the button (S0) and the positive pole of the first electric capacity (C1) meet 5V, second resistance (R2)
The other end is grounded, and realizes that upper electricity automatically resets using the discharge and recharge of the first electric capacity (C1), and the break-make realization of button (S0) is multiple manually
Position.
7. a kind of high-accuracy multifunctional beam type weighing device according to claim 1, it is characterised in that：The monolithic
18th pin of machine and the 19th pin are clock signal input terminal, wherein, the 18th pin connects first and shakes respectively
Swing one end of device (Y1) and one end of the second electric capacity (C2)；19th pin connects the other end of the first oscillator (Y1) respectively
With one end of the 3rd (C3), meanwhile, the other end of second electric capacity (C2) and the 3rd electric capacity (C3) is altogether；The single-chip microcomputer
20th pin is grounded, and the 31st pin and the 40th pin meet 5V.
8. a kind of high-accuracy multifunctional beam type weighing device according to claim 1, it is characterised in that：The monolithic
Machine control has matrix keyboard, and the matrix keyboard includes four rows, four row buttons, wherein, the first~the of the matrix keyboard
The line of four rows is respectively connected to the 28th pin~the 25th pin of single-chip microcomputer；The first of the matrix keyboard~4th
The alignment of row is respectively connected to the 24th pin~the 21st pin of single-chip microcomputer.
9. a kind of high-accuracy multifunctional beam type weighing device according to claim 1, it is characterised in that：The monolithic
Machine has also controlled voice broadcast module, and the voice broadcast module includes voice broadcast chip, and the of the voice broadcast chip
One pin and the 4th pin connect 3.3V and ground respectively；The second pin of the voice broadcast chip, the 3rd pin and the 5th pin
The 11st pin, the tenth pin and the 15th pin of controller single-chip microcomputer are connect respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621402311.1U CN206300715U (en) | 2016-12-20 | 2016-12-20 | A kind of high-accuracy multifunctional beam type weighing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621402311.1U CN206300715U (en) | 2016-12-20 | 2016-12-20 | A kind of high-accuracy multifunctional beam type weighing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206300715U true CN206300715U (en) | 2017-07-04 |
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ID=59214982
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621402311.1U Expired - Fee Related CN206300715U (en) | 2016-12-20 | 2016-12-20 | A kind of high-accuracy multifunctional beam type weighing device |
Country Status (1)
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| CN (1) | CN206300715U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023070664A1 (en) * | 2021-10-29 | 2023-05-04 | 中国科学院深圳先进技术研究院 | Object weight measurement system and measurement method |
-
2016
- 2016-12-20 CN CN201621402311.1U patent/CN206300715U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023070664A1 (en) * | 2021-10-29 | 2023-05-04 | 中国科学院深圳先进技术研究院 | Object weight measurement system and measurement method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170704 Termination date: 20171220 |
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| CF01 | Termination of patent right due to non-payment of annual fee |