CN105092007A - Weight measuring instrument - Google Patents
Weight measuring instrument Download PDFInfo
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- CN105092007A CN105092007A CN201510652930.XA CN201510652930A CN105092007A CN 105092007 A CN105092007 A CN 105092007A CN 201510652930 A CN201510652930 A CN 201510652930A CN 105092007 A CN105092007 A CN 105092007A
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- body weight
- color screen
- weight measuring
- keyboard
- measuring device
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Abstract
A weight measuring instrument, which adopts a 51/AVR series single chip microcomputer as a detecting system of a core part, mainly comprises a pressure sensor, a microcontroller, an external storage, a color screen, a keyboard, a clock chip and the like. Finally, the modules are combined through programming to realize data acquisition, judgment, analysis, storage, processing and computation, and the result is displayed on the color screen; the measuring time (recorded by the clock chip) and the weight data of a measured user can be displayed on the color screen, the measured data is recorded according to user needs, and the current indoor temperature value can be displayed in real time.
Description
Technical field
The present invention relates to a kind of measured body weight field, specifically a kind of instrument can drawing user's body weight change.
Background technology
After reform and opening-up, our country experienced by develop rapidly period, today of 21 century we need not but heart problem of food and clothing, and another problem is noted just widely, and that is exactly health problem; Body weight is as an important indicator of health by the concern of people's height, and scale becomes the electronic equipment of every household indispensability, thus can pay close attention to the body weight change of oneself and household the moment.
In modern times highly material society, normal diet ignore by people, because the unreasonable of dietary structure result in various health problems, obesity is exactly a typical example, the fat crowd that annoying each age level gradually, this impels fat-reducing to become a kind of trend; Imagination has so a kind of instrument: it can help people to record and compare body weight every day, them are facilitated to observe the body weight change of oneself moment, by strengthening the supervision of fat-reducing, partially fat person is concerned about in a kind of hommization mode, promote the adjustment of oneself dietary structure, this is by more self-confident for the road of the fat-reducing making them very long; Finally reach and improve its quality of life and health index.
Summary of the invention
For the delta data collecting people's body weight effectively can be transformed, the invention provides a kind of body weight measuring device, it effectively can record each weight data of user, and is gone out the body weight change figure of user by Drawing of Curve, allows user understand the change of oneself nearest body weight intuitively.
The technology that the present invention adopts is as follows: a kind of body weight measuring device, and it mainly comprises 51/AVR series monolithic, pressure transducer, microcontroller, exterior storage, color screen, keyboard, clock chip; By programming, each module is carried out combining to realize the data acquisition of system, judgement, analysis, preservation, process, computing, and result is presented on color screen; Namely gathered by the weight data of pressure transducer to measured, A/D converter is utilized to make it convert digital signal to, then single-chip microcomputer analysis is sent, last on color screen display measurement time (by clock chip record) and measured's weight data, and according to user need measurement data is noted down and shows the temperature value of current indoor in real time.
Wherein single-chip microcomputer is connected by wire with each parts, and pressure transducer is connected with microcontroller, and keyboard is connected with color screen, and color screen is arranged on topmost of the present invention, and single-chip microcomputer is arranged on inside of the present invention, is provided with jack in outside storage place.
The inner EEPROM with ROM and 256x8Byte of 8KB of 51/AVR series monolithic of the present invention, extends the exterior storage of 2kbit in addition to meet control and the storage demand of system.
Keyboard of the present invention is 4*4 form, and totally 16 buttons, comprise the buttons such as deletion, menu, confirmation.
Sensor of the present invention is ZC-A6 pressure transducer, and its maximum range is 150KG, and composition error is about 0.02%F.S, and sensitivity is 2 ± 0.1mv/v, and non-linear is 0.02%F.S.
The invention has the beneficial effects as follows, can record the data of the nearest body weight of user, and be depicted as curve, person easy to use understands oneself nearest body weight change.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is FB(flow block) of the present invention.
Embodiment
The present invention includes controller part and part of data acquisition, wherein part of data acquisition is by pressure transducer, pre-amplifier, A/D converter and DS1302 clock chip, DS18B20 temperature sensor, AT24C02 storer.
Storage device in the present invention and display screen can store data and show, after measuring, user can from main separation whether storage of measurement data, and record preserves the average weight of every day to external data memory, this product can preserve user's weight measurement data for a long time, the data that user can call any one day in the past compare, the body weight change of curve map display user within a period of time.
Pre-amplifier part of the present invention is that high-precision low-drift operational amplifier forms differential amplifier.Differential amplifier has high input impedance, the feature that gain is high, and common amplifier (as OP07) can be utilized to make a differential amplifier.A/D converter error should below 0.02%, 12 A/D precision: 150Kg/4096=36.62g, 14 A/D precision: 150Kg/16384=9.1g.Consider the interference that other parts are brought, and we require to be accurate to 0.01kg, 12 A/D cannot meet system accuracy requirement.So we need selection 14 or the higher A/D of precision.Concrete scheme: select A/D converter HX711, it is a 24 the A/D converter chips aiming at the design of high-precision electronic scale.Compared with other chip of the same type, this integrated chip comprises other peripheral circuit needed for chip of the same type such as stabilized voltage supply, on-chip clock oscillator, has advantages such as integrated level is high, fast response time, strong interference immunity.Above advantage will reduce the complete machine cost of electronic scales, improves overall performance and the reliability of electronic scales.Containing a real-time clock/calendar and 31 byte static RAM (SRAM)s in DS1302, communicated with single-chip microcomputer by simple serial line interface.Real-time clock/calendar circuit provide second, point, time, day, the date, the moon, year information, the number of days of every day and the number of days in leap year can adjust automatically, and clock operation determines employing 24 or 12 hours forms by AM/PM instruction.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although by referring to the preferred embodiments of the present invention, invention has been described, but those of ordinary skill in the art is to be understood that, change miscellaneous can be made to it in the form and details, and not depart from the spirit and scope of the present invention that appended claims limits.
Claims (4)
1. a body weight measuring device, it mainly comprises 51/AVR series monolithic, pressure transducer, microcontroller, exterior storage, color screen, keyboard, clock chip; Wherein single-chip microcomputer is connected by wire with each parts, and pressure transducer is connected with microcontroller, and keyboard is connected with color screen, and color screen is arranged on topmost of the present invention, and single-chip microcomputer is arranged on inside of the present invention, is provided with jack in outside storage place.
2. a kind of body weight measuring device according to claim 1, the inner EEPROM with ROM and 256x8Byte of 8KB of described 51/AVR series monolithic.
3. a kind of body weight measuring device according to claim 1, described keyboard is 4*4 form, and totally 16 buttons, comprise the buttons such as deletion, menu, confirmation.
4. a kind of body weight measuring device according to claim 1, described sensor is ZC-A6 pressure transducer, and its maximum range is 150KG, and composition error is about 0.02%F.S, and sensitivity is 2 ± 0.1mv/v, and non-linear is 0.02%F.S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510652930.XA CN105092007A (en) | 2015-10-10 | 2015-10-10 | Weight measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510652930.XA CN105092007A (en) | 2015-10-10 | 2015-10-10 | Weight measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105092007A true CN105092007A (en) | 2015-11-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510652930.XA Pending CN105092007A (en) | 2015-10-10 | 2015-10-10 | Weight measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105092007A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105973384A (en) * | 2016-01-20 | 2016-09-28 | 申俊 | Multifunctional dual-step electronic scale |
| CN105973436A (en) * | 2016-01-20 | 2016-09-28 | 申俊 | Elastic support type dual-precision electronic scale |
| CN105973421A (en) * | 2016-01-20 | 2016-09-28 | 申俊 | Electronic scale and dual-precision electronic scale |
| CN105973414A (en) * | 2016-01-20 | 2016-09-28 | 申俊 | Electronic scale |
| CN105973418A (en) * | 2016-01-20 | 2016-09-28 | 申俊 | Single-sensor dual-purpose electronic scale |
| CN105987748A (en) * | 2016-01-20 | 2016-10-05 | 申俊 | Dual-purpose electronic scale |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60147617A (en) * | 1984-01-12 | 1985-08-03 | Sharp Corp | Weighing machine |
| CN201000359Y (en) * | 2007-01-16 | 2008-01-02 | 侯红波 | height and weight measuring instrument |
| CN201166582Y (en) * | 2007-11-22 | 2008-12-17 | 赵国鑫 | Body weight scale for detecting healthiness |
| CN201583335U (en) * | 2009-10-30 | 2010-09-15 | 王培勇 | Height and weight measuring instrument |
| CN202041266U (en) * | 2011-04-25 | 2011-11-16 | 应可勇 | Intelligent weight meter |
-
2015
- 2015-10-10 CN CN201510652930.XA patent/CN105092007A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60147617A (en) * | 1984-01-12 | 1985-08-03 | Sharp Corp | Weighing machine |
| CN201000359Y (en) * | 2007-01-16 | 2008-01-02 | 侯红波 | height and weight measuring instrument |
| CN201166582Y (en) * | 2007-11-22 | 2008-12-17 | 赵国鑫 | Body weight scale for detecting healthiness |
| CN201583335U (en) * | 2009-10-30 | 2010-09-15 | 王培勇 | Height and weight measuring instrument |
| CN202041266U (en) * | 2011-04-25 | 2011-11-16 | 应可勇 | Intelligent weight meter |
Non-Patent Citations (1)
| Title |
|---|
| 解翠英: "新型体重测量仪的研制", 《万方学位论文全文数据库》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105973384A (en) * | 2016-01-20 | 2016-09-28 | 申俊 | Multifunctional dual-step electronic scale |
| CN105973436A (en) * | 2016-01-20 | 2016-09-28 | 申俊 | Elastic support type dual-precision electronic scale |
| CN105973421A (en) * | 2016-01-20 | 2016-09-28 | 申俊 | Electronic scale and dual-precision electronic scale |
| CN105973414A (en) * | 2016-01-20 | 2016-09-28 | 申俊 | Electronic scale |
| CN105973418A (en) * | 2016-01-20 | 2016-09-28 | 申俊 | Single-sensor dual-purpose electronic scale |
| CN105987748A (en) * | 2016-01-20 | 2016-10-05 | 申俊 | Dual-purpose electronic scale |
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Application publication date: 20151125 |