CN204255477U - A kind of household kitchen electronic measuring scale - Google Patents
A kind of household kitchen electronic measuring scale Download PDFInfo
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- CN204255477U CN204255477U CN201420794378.9U CN201420794378U CN204255477U CN 204255477 U CN204255477 U CN 204255477U CN 201420794378 U CN201420794378 U CN 201420794378U CN 204255477 U CN204255477 U CN 204255477U
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Abstract
The utility model discloses a kind of household kitchen electronic measuring scale, it relates to a kind of metering outfit.It comprises power circuit, electronic scale sensor metering circuit, Microprocessor S3C44B0X treatment circuit, key input unit and display circuit, power circuit respectively with electronic scale sensor metering circuit, Microprocessor S3C44B0X treatment circuit, key input unit is connected with display circuit, electronic scale sensor metering circuit, key input unit all connects Microprocessor S3C44B0X treatment circuit, Microprocessor S3C44B0X treatment circuit connects display circuit, described electronic scale sensor metering circuit comprises full-bridge low noise operational amplifying circuit, condenser type double integration circuit and comparator circuit, full-bridge low noise operational amplifying circuit connects condenser type double integration circuit, condenser type double integration circuit connects comparator circuit.The utility model is practical, easy to use, accurately can measure the dosage of various food material, greatly improve cooking quality.
Description
Technical field
The utility model relates to a kind of metering outfit, be specifically related to a kind of household kitchen electronic measuring scale.
Background technology
Along with the fast development of science and technology, people are more and more higher for the pursuit of quality of life, in clothing, food, lodging and transportion--basic necessities of life, food occupies most important status, in the daily culinary cuisine of family, the accurate dosage of food material is very crucial, in the past during family cooking batching, usually to carry out according to the experience of people, so, batching often can be caused inaccurate, greatly affect cooking quality, special is not that the impact that very abundant young man causes can be larger for culinary art experience, the food of working it out often does not reach desirable taste, and the existing electronic measuring scale being applicable to family is on the market little, and the coarse problem of ubiquity measurement data, based on this, design a kind of novel household kitchen electronic measuring scale or necessary.
Utility model content
For the deficiency that prior art exists, the utility model object is to provide a kind of household kitchen electronic measuring scale, reasonable in design, practical, easy to use, accurately can measure the dosage of various food material, greatly improve cooking quality.
To achieve these goals, the utility model realizes by the following technical solutions: a kind of household kitchen electronic measuring scale, comprise power circuit, electronic scale sensor metering circuit, Microprocessor S3C44B0X treatment circuit, key input unit and display circuit, power circuit respectively with electronic scale sensor metering circuit, Microprocessor S3C44B0X treatment circuit, key input unit is connected with display circuit, electronic scale sensor metering circuit, key input unit all connects Microprocessor S3C44B0X treatment circuit, Microprocessor S3C44B0X treatment circuit connects display circuit, described electronic scale sensor metering circuit comprises full-bridge low noise operational amplifying circuit, condenser type double integration circuit and comparator circuit, full-bridge low noise operational amplifying circuit connects condenser type double integration circuit, condenser type double integration circuit connects comparator circuit.
As preferably, described full-bridge low noise operational amplifying circuit comprises the first operational amplifier, potentiometer, first electric capacity-five electric capacity, first resistance and the second resistance, 1 pin of sensor output signal end connects the 5th electric capacity and extremely holds, 2 pin of sensor output signal end, 3 pin connect the inverting input of the first operational amplifier respectively, in-phase input end, the 3rd electric capacity is connected between the inverting input of the first operational amplifier and in-phase input end, the inverting input of the first operational amplifier, in-phase input end connects the first electric capacity respectively, second electric capacity extremely is held, the in-phase input end of the first operational amplifier also connects the moved end of the second resistance to potentiometer, between the inverting input of the first operational amplifier and output terminal respectively and be connected to the first resistance, 4th electric capacity.
As preferably, described condenser type double integration circuit comprises the second operational amplifier, triode, 6th electric capacity-ten electric capacity, 3rd resistance-nine resistance, the output terminal of the first operational amplifier connects the tenth resistance successively, the inverting input of the 5th resistance to the second operational amplifier, node between tenth resistance and the 5th resistance connects the collector of triode, the emitter of triode meets power supply VCC and holds, the base stage of triode connects the 8th electric capacity, 3rd resistance, the parallel circuit of the 4th resistance three is to T2 point, the 9th electric capacity is connected between the inverting input of the second operational amplifier and output terminal, output termination the 9th resistance of the second operational amplifier extremely is held, positive pole termination the tenth electric capacity of the second operational amplifier extremely is held, the in-phase input end of the second operational amplifier connects the 6th resistance respectively, 6th electric capacity is held to power supply VCC, ground end, the in-phase input end of the second operational amplifier also connects the 7th resistance successively, 8th resistance extremely is held, 8th resistance and the 7th electric capacity also connect, described triode adopts model to be the PNP type triode of 9012.
As preferably, described comparator circuit comprises the 3rd operational amplifier, the 11 electric capacity, the output terminal of anti-phase input termination second operational amplifier of the 3rd operational amplifier, the 11 electric capacity is connected between the inverting input of the 3rd operational amplifier and output terminal, the in-phase input end of the 3rd operational amplifier connects the 7th electric capacity and extremely holds, and the first operational amplifier, the second operational amplifier, the 3rd operational amplifier all adopt model to be the operational amplifier of LM324; Full-bridge low noise operational amplifying circuit, condenser type double integration circuit, comparator circuit three part constitute kitchen scale sensor measuring circuit, because the very difficult identification of voltage signal that sensor self is weak, relatively strong voltage signal is converted to by low noise operational amplifier, due to common processor None-identified analog voltage signal, we convert frequency signal by double integration circuit to voltage signal, so just achieve analog to digital conversion and are convenient to processor process computing.
As preferably, described power circuit comprises voltage stabilizing integrated chip, the 12 electric capacity and the 13 electric capacity, 1 pin, 3 pin of voltage stabilizing integrated chip connect the 13 electric capacity respectively, the 12 electric capacity extremely is held, 3 pin of voltage stabilizing integrated chip connect battery and extremely hold, and voltage stabilizing integrated chip employing model is the three-terminal voltage-stabilizing chip of HT7136; Described Microprocessor S3C44B0X treatment circuit comprises processor, the 14 electric capacity-19 electric capacity, crystal oscillator, button and the 11 resistance, 9 pin of processor, 10 pin, 12 pin, 13 pin, 30 pin, 32 pin connect the 14 electric capacity respectively, the 19 electric capacity, the 15 electric capacity, the 16 electric capacity, the 18 electric capacity, the 17 electric capacity extremely are held, crystal oscillator is connected between 12 pin of processor and 13 pin, 9 pin of processor connect button successively, the 11 resistance extremely is held, 30 pin of processor connect inductance to 5V power supply, and processor adopts model to be the microprocessor of ATMEGA16L; Described display circuit comprises LCD display, 4 pin-6 pin of LCD display connect 39 pin-37 pin of processor respectively, 11 pin-14 pin of LCD display connect 36 pin-33 pin of processor respectively, 17 pin of LCD display connect 17 pin of processor, 2 pin of LCD display, 15 pin, 19 pin all connect 5V power supply, 1 pin of LCD display, the equal earth terminal of 20 pin, LCD display adopts model to be the display screen of LCD_16032.
The beneficial effects of the utility model: utilize resistance strain type sensor to determine as the main sensing element of kitchen electronic measuring scale quality of weighing, be conducive to the accurate dosage of food material in the daily culinary cuisine of family, easy to use, practical, very big raising cooking quality, facilitates the life of people.
Accompanying drawing explanation
The utility model is described in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is theory diagram of the present utility model;
Fig. 2 is the circuit diagram of the utility model electronic scale sensor metering circuit;
Fig. 3 is the circuit diagram of the utility model full-bridge low noise operational amplifying circuit;
Fig. 4 is the circuit diagram of the utility model condenser type double integration circuit;
Fig. 5 is the circuit diagram of the utility model comparator circuit;
Fig. 6 is the circuit diagram of the utility model power circuit;
Fig. 7 is the circuit diagram of the utility model Microprocessor S3C44B0X treatment circuit;
Fig. 8 is the circuit diagram of the utility model display circuit.
Embodiment
The technological means realized for making the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with embodiment, setting forth the utility model further.
With reference to Fig. 1-8, this embodiment is by the following technical solutions: a kind of household kitchen electronic measuring scale, comprise power circuit 1, electronic scale sensor metering circuit 2, Microprocessor S3C44B0X treatment circuit 3, key input unit 4 and display circuit 5, power circuit 1 respectively with electronic scale sensor metering circuit 2, Microprocessor S3C44B0X treatment circuit 3, key input unit 4 is connected with display circuit 5, electronic scale sensor metering circuit 2, key input unit 4 all connects Microprocessor S3C44B0X treatment circuit 3, Microprocessor S3C44B0X treatment circuit 3 connects display circuit 5, described electronic scale sensor metering circuit 2 comprises full-bridge low noise operational amplifying circuit, condenser type double integration circuit and comparator circuit, full-bridge low noise operational amplifying circuit connects condenser type double integration circuit, condenser type double integration circuit connects comparator circuit.
It should be noted that, described full-bridge low noise operational amplifying circuit comprises the first operational amplifier U1A, potentiometer VR1, first electric capacity C1-the 5th electric capacity C5, first resistance R1 and the second resistance R2, 1 pin of sensor output signal end S meets the 5th electric capacity C5 and extremely holds, 2 pin of sensor output signal end S, 3 pin connect the inverting input of the first operational amplifier U1A respectively, in-phase input end, the 3rd electric capacity C3 is connected between the inverting input of the first operational amplifier U1A and in-phase input end, the inverting input of the first operational amplifier U1A, in-phase input end meets the first electric capacity C1 respectively, second electric capacity C2 extremely holds, the in-phase input end of the first operational amplifier U1A also connects the moved end of the second resistance R2 to potentiometer VR1, between the inverting input of the first operational amplifier U1A and output terminal respectively and be connected to the first resistance R1, 4th electric capacity C4.
It should be noted that, described condenser type double integration circuit comprises the second operational amplifier U1B, triode Q1, 6th electric capacity C6-the tenth electric capacity C10, 3rd resistance R3-the 9th resistance R9, the output terminal of the first operational amplifier U1A meets the tenth resistance R10 successively, the inverting input of the 5th resistance R5 to the second operational amplifier U1B, node between tenth resistance R10 and the 5th resistance R5 connects the collector of triode Q1, the emitter of triode Q1 meets power supply VCC and holds, the base stage of triode Q1 meets the 8th electric capacity C8, 3rd resistance R3, the parallel circuit of the 4th resistance R4 three is to T2 point, the 9th electric capacity C9 is connected between the inverting input of the second operational amplifier U1B and output terminal, output termination the 9th resistance R9 of the second operational amplifier U1B extremely holds, positive pole termination the tenth electric capacity C10 of the second operational amplifier U1B extremely holds, the in-phase input end of the second operational amplifier U1B meets the 6th resistance R6 respectively, 6th electric capacity C6 to power supply VCC holds, ground end, the in-phase input end of the second operational amplifier U1B also meets the 7th resistance R7 successively, 8th resistance R8 extremely holds, 8th resistance R8 and the 7th electric capacity C7 also connects, described triode Q1 adopts model to be the PNP type triode of 9012.
It should be noted that, described comparator circuit comprises the 3rd operational amplifier U1C, the 11 electric capacity C11, the output terminal of the anti-phase input termination second operational amplifier U1B of the 3rd operational amplifier U1C, be connected to the 11 electric capacity C11 between the inverting input of the 3rd operational amplifier U1C and output terminal, the in-phase input end of the 3rd operational amplifier U1C meets the 7th electric capacity C7 and extremely holds; The first described operational amplifier U1A, the second operational amplifier U1B, the 3rd operational amplifier U1C all adopt model to be the operational amplifier of LM324.
It should be noted that, described power circuit 1 comprises voltage stabilizing integrated chip U2, the 12 electric capacity C12 and the 13 electric capacity C13,1 pin, 3 pin of voltage stabilizing integrated chip U2 meet the 13 electric capacity C13 respectively, the 12 electric capacity C12 extremely holds, 3 pin of voltage stabilizing integrated chip U2 meet battery BT and extremely hold, and voltage stabilizing integrated chip U2 employing model is the three-terminal voltage-stabilizing chip of HT7136; Power circuit 1 principle is simple, and cost is lower, and the ripple voltage of generation is little, and stability is better, and can meet use needs, in use procedure, power consumption is less.
In addition, described Microprocessor S3C44B0X treatment circuit 3 comprises processor U3, 14 electric capacity C14-the 19 electric capacity C19, crystal oscillator Y1, button S1 and the 11 resistance R11, 9 pin of processor U3, 10 pin, 12 pin, 13 pin, 30 pin, 32 pin meet the 14 electric capacity C14 respectively, 19 electric capacity C19, 15 electric capacity C15, 16 electric capacity C16, 18 electric capacity C18, 17 electric capacity C17 extremely holds, crystal oscillator Y1 is connected between 12 pin of processor U3 and 13 pin, 9 pin of processor U3 meet button S1 successively, 11 resistance R11 extremely holds, 30 pin of processor U3 connect inductance L 1 to 5V power supply, described display circuit 5 comprises LCD display J4,4 pin-6 pin of LCD display J4 connect 39 pin-37 pin of processor U3 respectively, 11 pin-14 pin of LCD display J4 connect 36 pin-33 pin of processor U3 respectively, 17 pin of LCD display J4 connect 17 pin of processor U3,2 pin of LCD display J4,15 pin, 19 pin all connect 5V power supply, 1 pin of LCD display J4, the equal earth terminal of 20 pin, LCD display J4 adopts model to be the display screen of LCD_16032, Microprocessor S3C44B0X treatment circuit selects ATMEGA16L microprocessor to control as core, the frequency signal that kitchen scale sensor measuring circuit exports is sent in processor U3, high level lasting time is measured through software control, the voltage signal that sensor exports can be calculated, and then calculate weight and be shown to J4 on LCD display screen.
This embodiment utilizes resistance strain type sensor to determine as the main sensing element of kitchen electronic measuring scale quality of weighing, specific works process: when measurand acts on flexible member, flexible member deforms under the effect of power, moment or pressure etc., produce corresponding strain or displacement, then the foil gauge be attached thereto is passed to, cause the resistance change of foil gauge, become electricity by metering circuit and export, the electricity size of output reflects measured size.
In generation resistance strain effect situation, the relational expression of resistance variations and strain is: dR/R=(1+2 μ) ε x+d ρ/ρ, wherein (1+2 μ) ε x item is called geometric effect, d ρ/ρ item is called piezoresistive effect, for metal material foil gauge, general d ρ/ρ <<1, then resistance change rate dR/R=(1+2 μ) ε x, now we define static characteristics parameter: sensitivity coefficient K=dR/R/ε x=(1+2 μ); Visible, when masterpiece is on the foil gauge made of metal material, its resistance changes with resistance wire axial strain proportional relatively; The mechanically deform produced due to flexible member is small, the dependent variable ε caused is very small (usually at 5000 below μ) also, thus the resistance change rate dR/R of the resistance strain gage caused is also very little, in order to small resistance change rate is reflected, measuring bridge must be adopted, the change of strain resistor is converted to voltage or curent change, thus reaches the object accurately measured.
(1) under single armed working method, namely only have a foil gauge R1 to access, have U0=EK ε/4 output voltage U0 to be proportional to strain stress;
(2), under half-bridge working method, by adjacent two brachium pontis of two foil gauge access electric bridges, according to stressing conditions tension of test specimen, a pressurized, has U0=EK ε/2, and output voltage U0 is proportional to strain stress;
(3) under full-bridge working method, by four foil gauge access electric bridges, and differential work.Have U0=Ek ε, output voltage U0 is proportional to strain stress.
This embodiment full-bridge low noise operational amplifying circuit, condenser type double integration circuit, comparator circuit three part constitute kitchen scale sensor measuring circuit, because the very difficult identification of voltage signal that sensor self is weak, relatively strong voltage signal is converted to by low noise operational amplifier, due to common microprocessor None-identified analog voltage signal, we convert frequency signal by double integration circuit to voltage signal, so just achieve analog to digital conversion and are convenient to microprocessor processes computing.
Full-bridge low noise operational amplifying circuit have employed differential amplifier circuit, see Fig. 3, feature is the input signal of differential amplifier circuit is hold introducing mutually from the positive and negative of integrated circuit, the difference of positive and negative phase signals scales up, voltage amplification factor A=Uo/ Δ Ui, the zero-point voltage of T1 point adjusts by potentiometer VR1, and principal feature has:
(1) high input impedance, the signal be extracted is the feeble signal in unstable high internal resistance source, in order to reduce the impact of singal source resistance, must improve amplifier input impedance.
(2) high cmrr CMRR, the interference of the effect beyond signal Hz noise and measured parameter, is generally common mode interference, and prestage must adopt the differential amplify form that CMRR is high, can reduce common mode interference and transform to differential mode interference.
(3) low noise and drift, Main Function is little on the impact of signal source, and the ability of pickoff signals is strong, and can make stable output.
Condenser type double integration circuit is the core of whole circuit, see Fig. 4, input end meets control end T2 and can be produced by square wave signal generator, when T2 end is low level, integration is carried out to the voltage Vi of input T3 end, the control circuit of integration time constant τ=RC, T2 end is the circuit be made up of triode, electric capacity, resistance, and the circuit be made up of it can provide enough charging currents to reach constant current effect, thus electric current stable when ensureing charging, integrator integral process linear so that measure.
Comparator circuit designs mainly for being convenient to detect the process of integrator, see Fig. 5, when integrator starts charging and T2 signal sets low level, at this moment T4 is high level, T5 is also high level, the T4 point voltage that slightly charges again when the voltage of integrator charging equals V3 critical point will overturn as low level, T5 level point is also followed by overturning as low level simultaneously, namely from T2 point sets low level, timing terminates to T5 point step-down level, be t1 during this period of time, integrator discharge process subsequently: from T5 point voltage step-down just T2 point voltage set high i.e. integrator start electric discharge, to T5 again overturn for during high level do suitable time-delay electric discharge be t2, integrator can start the process of next discharge and recharge.
This embodiment reasonable in design, practical, easy to use, the people that experience of much cooking can be helped not enrich accurately measure the dosage of various food material, greatly improve cooking quality, have market application foreground widely.
More than show and describe 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; what describe in above-described embodiment and instructions just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (8)
1. a household kitchen electronic measuring scale, it is characterized in that, comprise power circuit (1), electronic scale sensor metering circuit (2), Microprocessor S3C44B0X treatment circuit (3), key input unit (4) and display circuit (5), power circuit (1) respectively with electronic scale sensor metering circuit (2), Microprocessor S3C44B0X treatment circuit (3), key input unit (4) is connected with display circuit (5), electronic scale sensor metering circuit (2), key input unit (4) all connects Microprocessor S3C44B0X treatment circuit (3), Microprocessor S3C44B0X treatment circuit (3) connects display circuit (5), described electronic scale sensor metering circuit (2) comprises full-bridge low noise operational amplifying circuit, condenser type double integration circuit and comparator circuit, full-bridge low noise operational amplifying circuit connects condenser type double integration circuit, condenser type double integration circuit connects comparator circuit.
2. a kind of household kitchen electronic measuring scale according to claim 1, it is characterized in that, described full-bridge low noise operational amplifying circuit comprises the first operational amplifier (U1A), potentiometer (VR1), first electric capacity (C1)-five electric capacity (C5), first resistance (R1) and the second resistance (R2), 1 pin of sensor output signal end (S) connects the 5th electric capacity (C5) and extremely holds, 2 pin of sensor output signal end (S), 3 pin connect the inverting input of the first operational amplifier (U1A) respectively, in-phase input end, the 3rd electric capacity (C3) is connected between the inverting input of the first operational amplifier (U1A) and in-phase input end, the inverting input of the first operational amplifier (U1A), in-phase input end connects the first electric capacity (C1) respectively, second electric capacity (C2) extremely is held, the in-phase input end of the first operational amplifier (U1A) also connects the moved end of the second resistance (R2) to potentiometer (VR1), between the inverting input of the first operational amplifier (U1A) and output terminal respectively and be connected to the first resistance (R1), 4th electric capacity (C4).
3. a kind of household kitchen electronic measuring scale according to claim 2, it is characterized in that, described condenser type double integration circuit comprises the second operational amplifier (U1B), triode (Q1), 6th electric capacity (C6)-ten electric capacity (C10), 3rd resistance (R3)-nine resistance (R9), the output terminal of the first operational amplifier (U1A) connects the tenth resistance (R10) successively, 5th resistance (R5) is to the inverting input of the second operational amplifier (U1B), node between tenth resistance (R10) and the 5th resistance (R5) connects the collector of triode (Q1), the emitter of triode (Q1) meets power supply VCC and holds, the base stage of triode (Q1) connects the 8th electric capacity (C8), 3rd resistance (R3), the parallel circuit of the 4th resistance (R4) three is to T2 point, the 9th electric capacity (C9) is connected between the inverting input of the second operational amplifier (U1B) and output terminal, the output termination the 9th resistance (R9) of the second operational amplifier (U1B) extremely is held, the positive pole termination the tenth electric capacity (C10) of the second operational amplifier (U1B) extremely is held, the in-phase input end of the second operational amplifier (U1B) connects the 6th resistance (R6) respectively, 6th electric capacity (C6) is held to power supply VCC, ground end, the in-phase input end of the second operational amplifier (U1B) also connects the 7th resistance (R7) successively, 8th resistance (R8) extremely is held, 8th resistance (R8) and the 7th electric capacity (C7) also connect, described triode (Q1) adopt model be 9012 PNP type triode.
4. a kind of household kitchen electronic measuring scale according to claim 3, it is characterized in that, described comparator circuit comprises the 3rd operational amplifier (U1C), the 11 electric capacity (C11), the output terminal of anti-phase input termination second operational amplifier (U1B) of the 3rd operational amplifier (U1C), be connected to the 11 electric capacity (C11) between the inverting input of the 3rd operational amplifier (U1C) and output terminal, the in-phase input end of the 3rd operational amplifier (U1C) connects the 7th electric capacity (C7) and extremely holds.
5. a kind of household kitchen electronic measuring scale according to claim 4, it is characterized in that, described the first operational amplifier (U1A), the second operational amplifier (U1B), the 3rd operational amplifier (U1C) all adopt model to be the operational amplifier of LM324.
6. a kind of household kitchen electronic measuring scale according to claim 1, it is characterized in that, described power circuit (1) comprises voltage stabilizing integrated chip (U2), the 12 electric capacity (C12) and the 13 electric capacity (C13), 1 pin of voltage stabilizing integrated chip (U2), 3 pin connect the 13 electric capacity (C13) respectively, the 12 electric capacity (C12) extremely is held, 3 pin of voltage stabilizing integrated chip (U2) connect battery (BT) and extremely hold, and voltage stabilizing integrated chip (U2) adopts model to be the three-terminal voltage-stabilizing chip of HT7136.
7. a kind of household kitchen electronic measuring scale according to claim 1, it is characterized in that, described Microprocessor S3C44B0X treatment circuit (3) comprises processor (U3), 14 electric capacity (C14)-19 electric capacity (C19), crystal oscillator (Y1), button (S1) and the 11 resistance (R11), 9 pin of processor (U3), 10 pin, 12 pin, 13 pin, 30 pin, 32 pin connect the 14 electric capacity (C14) respectively, 19 electric capacity (C19), 15 electric capacity (C15), 16 electric capacity (C16), 18 electric capacity (C18), 17 electric capacity (C17) extremely is held, crystal oscillator (Y1) is connected between 12 pin of processor (U3) and 13 pin, 9 pin of processor (U3) connect button (S1) successively, 11 resistance (R11) extremely is held, 30 pin of processor (U3) connect inductance (L1) to 5V power supply, processor (U3) adopts model to be the microprocessor of ATMEGA16L.
8. a kind of household kitchen electronic measuring scale according to claim 1, it is characterized in that, described display circuit (5) comprises LCD display (J4), 4 pin-6 pin of LCD display (J4) connect 39 pin-37 pin of processor (U3) respectively, 11 pin-14 pin of LCD display (J4) connect 36 pin-33 pin of processor (U3) respectively, 17 pin of LCD display (J4) connect 17 pin of processor (U3), 2 pin of LCD display (J4), 15 pin, 19 pin all connect 5V power supply, 1 pin of LCD display (J4), the equal earth terminal of 20 pin, LCD display (J4) adopts model to be the display screen of LCD_16032.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201420794378.9U CN204255477U (en) | 2014-12-16 | 2014-12-16 | A kind of household kitchen electronic measuring scale |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420794378.9U CN204255477U (en) | 2014-12-16 | 2014-12-16 | A kind of household kitchen electronic measuring scale |
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| CN204255477U true CN204255477U (en) | 2015-04-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106338324A (en) * | 2015-07-08 | 2017-01-18 | 胡裕周 | Kitchen computer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106338324A (en) * | 2015-07-08 | 2017-01-18 | 胡裕周 | Kitchen computer |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Zhongwang Inventor after: Wan Luanfei Inventor after: Chen Rui Inventor before: Li Zhongwang |
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| COR | Change of bibliographic data | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151008 Address after: 241000 Anhui city of Wuhu province Wenjin Road No. 201 Patentee after: Wuhu Institute of Technology Address before: 241000 unit 1, unit 16, long Changjiang District, Anhui, Wuhu, 1202 Patentee before: Li Zhongwang |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150408 Termination date: 20151216 |
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| EXPY | Termination of patent right or utility model |