CN103519782A - Simple BMI health body scale and implement method - Google Patents
Simple BMI health body scale and implement method Download PDFInfo
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Abstract
The invention discloses a simple BMI health body scale and an implement method, wherein BMI is a body mass index which can be used as a standard for judging human body obesity. According to the simple BMI health body scale, the weight of the human body and a BMI value can be measured at the same time. The simple BMI health body scale is composed of a microcontroller, a sensor, a displayer, a button, a buzzer and other units. Only one button is arranged, a special method is adopted to achieve multiple operations of unit conversion, mode switching, user selection and height setting, the traditional pattern of three-button operation is broken through, and therefore the hardware, software and a scale structure of the BMI health body scale are simplified, and the cost of the BMI health body scale goes near to the cost of an ordinary human body scale. The technology of intelligent identification and automatic measurement is adopted, so that using is more simple and convenient. Above all, the advantage of the one button is utilized, the scale body structure of the ordinary human body scale is directly upgraded, the ordinary human body scale is improved to be the BMI health body scale, and resources and the cost are saved. Therefore, the simple BMI health body scale is high in practicability and additional value and obvious in commercial value.
Description
Affiliated technical field
The present invention relates to electronic body measured body weight field, especially relate to a kind of body weight scale measuring device that can reflect physical condition BMI value (constitutional index).
Background technology
Modern society, particularly developed country, along with improving constantly of people's living standard, population of being obese increases sharply.Because obesity is easily brought out high-risk diseases such as hypertension, heart disease, diabetes, so obesity more and more becomes the health problem of people's common concern.BMI (Body Mass Index) is constitutional index (BMI=body weight/height
2), be the classical way of the judge human body health of generally acknowledging in the world.Research shows, BMI value and the fat dependency that has height.Therefore in daily life, it is inadequate only measuring body weight, also should pay close attention to the BMI value of oneself, the effective ways that are only prevention of obesity and keep fit.From the computing formula of BMI, must know that body weight and height could calculate BMI value.Yet the common weighing scale (scale) using on the market at present, can only measure body weight, can not survey BMI value (because can not input height), so user must could judge the health of oneself through oneself calculating and check BMI standard control table, it is convenient not to use.Also there are some companies to produce BMI healthy human body scale, can measure body weight and BMI value simultaneously, solved the trouble of user oneself calculating BMI value.But due to sex, height, age will be set, must configure three above buttons (key is set, increases key, reduces key), cause the cost of hardware, software and scale structure to increase, hindered the application of BMI healthy human body scale and popularized.
Summary of the invention
The object of the invention is: a kind of simple and easy BMI healthy human body scale circuit is provided, configures a button, design special mode of operation and using method, realize the measurement function of BMI, and its cost is suitable with common weighing scale; In addition, utilize the advantage of a button, can on the scale structure of common weighing scale, directly upgrade, common weighing scale is transformed into BMI healthy human body scale, save the cost of redesign and die sinking.
The technical scheme that the present invention realizes is: a kind of simple and easy BMI healthy human body scale device, comprise microcontroller, sensor, display, button, buzzer, power subsystem, wherein microcontroller adopts the special IC (chip that common weighing scale is conventional) of built-in 2K byte program memorizer, and inside comprises the functional modules such as amplifier, analog-digital converter, regulated power supply, electrical switch, display driver.Signal output part S+, the S-of sensor is connected with analog input port AI+, the AI-of microcontroller; Probe power positive pole is connected to a port VS of microcontroller, by the electrical switch of microcontroller inside, controls power supply; Sensor effect is that human bady gravitational is converted to the analog input end that the signal of telecommunication is sent to microcontroller, through microcontroller internal amplifier, analog-digital converter, amplify and be converted to digital quantity, treated, obtain surveyed body weight value after calculating, then deliver to display and show.Display adopts simple nixie display (the common weighing scale display of Fig. 7, or the simple and easy BMI weighing scale of Fig. 8 display), design some simple characters and form to represent user number (seeing Figure 12), height (seeing Figure 14 or Figure 15), BMI value (seeing Figure 17) and BMI pattern (seeing Figure 11) etc.Buzzer and the microcontroller output port of configuration join, and buzzer can be according to the judgement pronunciation prompting of BMI value; Dispose [unit/setting] button and microcontroller input port and join, by design [unit/setting] button " short by, long by (1～3 second), pin and do not put, pin maintenances (pin and do not put after 8 seconds) and wait for confirmations in 4 seconds " special operational mode realize Conversion of measurement unit, pattern switching, user's selection and height setting.This device can when selecting user number and arranging after height, enter BMI pattern for multi-user, just can carry out user's body weight and BMI value and measure.
User selects and height setting (referring to Figure 18): press [unit/setting] key SW1 start and enter the pattern of weighing, length is pressed [unit/setting] key and is entered user selection interface (seeing Figure 12), " user number " dodges and shows, short pressing [unit/setting] key is selected user, and user number progressively increases 1; Length is pressed [unit/setting] key and is entered the pattern of setting, active user (for example U2) height is arranged, height values (for example 170cm) " H 170 " is dodged and is shown, now, short pressing [unit/setting] key, height values adds 1, pinning [unit/setting] key does not put height values and adds continuously 1 at a slow speed, pin and keep height values (with step-length 1 or 2 or 5 or 10) after 8 seconds to progressively increase continuously fast, to shorten setup times, when be set to meet the height values of oneself time, after waiting for 4 seconds and confirming, enter BMI pattern, height setting completes.
BMI measures (referring to Figure 18): at off-mode, press [unit/setting] key SW1 start, microcontroller is waken up, microcontroller G1 enters mode of operation, by VS port, connect sensor powers simultaneously, after scale start, first sampling enters the pattern of weighing (seeing Fig. 9) after getting zero demonstration " 0.0 ", this pattern can only be measured body weight, compatible with common weighing scale), now, length is pressed [unit/setting] key and is entered user selection interface (seeing Figure 12), " user number " dodges and shows, short pressing [unit/setting] key is selected the user number (for example U2) of oneself, after waiting for confirmation in 4 seconds, enter BMI pattern (seeing Figure 11), while showing " u 0.0 ", on subscriber station, weighing platform is weighed, after weight locking, carry out BMI calculating, Alternation Display user's body weight value (seeing Figure 10) and BMI value (seeing Figure 17) afterwards, and preserve the data survey, when showing BMI value, according to BMI value, judge, buzzer sends corresponding whistling to point out health: underweight is sent out " flute " sound, Normal-weight is sent out " Di-Di " two sound, overweight is sent out " Di-Di-Di " three sound, body obesity is sent out " Di-Di-Di-Di " four tones of standard Chinese pronunciation.
Automatic metering system (referring to Figure 18): use for convenient, this device has designed body weight and has automatically measured and the automatic metering system of BMI Intelligent Recognition, automatically metering system is achieved in that when off-mode, microcontroller is at interval of certain hour (0.5～1.5 second), open sensor power supply, sensor is carried out to quick sampling scanning, weighing platform on user directly stands, for example, when weight is greater than start weight (5 kilograms), scale Auto Power On is also weighed, after weight locking, if people plays scale immediately, indicating value kept after several seconds, scale automatic shutdown (this is the automatic metering system of body weight), if people does not play scale, after 3～5 seconds, scale is compared to deposited user's weight or BMI data and currency automatically, when finding immediate data, just chooses this user (for example U2) and calculates BMI value as active user, echo is shown after active user " U2 ", Alternation Display body weight and BMI value.Therefore, as long as user had measured BMI value one time, preserve weight data, just can utilize the automatic measurement function of BMI Intelligent Recognition automatically to measure, save button operation and measure the loaded down with trivial details of BMI.
The present invention, simple and easy BMI healthy human body scale and implementation method, configure a button, adopt special method, realize the multiple operation that Conversion of measurement unit, pattern switching, user's selection and height arrange, broken through three traditional button operation general layouts, made hardware, software and the scale structure of BMI healthy human body scale obtain simplification, cost is suitable with common weighing scale; Adopt BMI Intelligent Recognition automatic measurement technology, make more simple and convenient for use; Because common weighing scale is generally provided with Yi Ge“ unit " button (seeing Fig. 1), utilize the advantage of a button of the present invention, can on the scale structure of common weighing scale, directly upgrade, common weighing scale is transformed into BMI healthy human body scale, make the heavily shining new vigor of old resource, save the cost of redesign and die sinking.Therefore, implement the present invention and develop BMI healthy human body scale, its cost is low, practical, accords with value added height, has remarkable commercial value, is worthy to be popularized and popularizes.
Accompanying drawing explanation
Fig. 1 is common weighing scale circuit block diagram;
Fig. 2 is the simple and easy BMI healthy human body of the present invention scale embodiment mono-circuit block diagram;
Fig. 3 is the simple and easy BMI healthy human body of the present invention scale embodiment bis-circuit block diagrams;
Fig. 4 is the simple and easy BMI healthy human body of the present invention scale embodiment three-circuit block diagram;
Fig. 5 is the simple and easy BMI healthy human body of the present invention scale embodiment tetra-circuit block diagrams;
Fig. 6 is the simple and easy BMI healthy human body of the present invention scale embodiment five (energy-saving) working mode figure;
Fig. 7 is common weighing scale display legend;
Fig. 8 is simple and easy BMI weighing scale display legend;
Fig. 9～Figure 17 is the simple and easy BMI healthy human body of the present invention scale display format;
Figure 18 is the simple and easy BMI healthy human body of the present invention scale embodiment mono-workflow diagram;
Figure 19 is the simple and easy BMI healthy human body of the present invention scale embodiment mono-" individual parameter setting " flow chart;
The specific embodiment
Shown in Fig. 2, be the embodiment of the present invention one circuit block diagram, the electric circuit constitute comprises microcontroller G1, sensor G2, display G4, button SW1, buzzer BZ and power supply G3 unit.Wherein microcontroller G1 adopts the special IC of built-in 2K byte program memorizer (model has: hy11P52, hy11p32, hy11p12, hy11p22, fs9932, fs9934, fs98o21, fs98o01, fs98o02, fs98o03, csu1182, csu1183, csu1185, sn8p1927, sn8p1937, sn8p1947), inside comprises the functional modules such as amplifier, analog-digital converter, regulated power supply, electrical switch, display driver.Microcontroller G1 has two kinds of patterns, and by electrical switch, K1 switches, and K1 puts 1 o'clock, and microcontroller G1 is mode of operation, and when K1 sets to 0, microcontroller G1 is battery saving mode (being low-power consumption mode or sleep pattern), and electric current only has several microamperes.
Power supply G3 is DC source (or battery), and anodal B+ is connected with the VDD that meets microcontroller G1, and power supply G3 negative pole B-ground connection GND, is connected with the VSS of microcontroller; Microcontroller G1 is powered by power supply G3.
The E+ of sensor G2, E-are power inputs, E-end ground connection GND, and E+ end is connected with the VS end of microcontroller G1; Microcontroller G1 by inner manostat W, power to sensor through electrical switch K2, port VS, is controlled the break-make of sensor G2 power supply by electrical switch K2.
The S+ of sensor G2, S-are signal output part, and S+, S-are connected with microcontroller G1 analog input port AI+, AI-, and sensor signal Us amplifies and converts digital quantity to through microcontroller G1 internal amplifier, analog-digital converter A.
Configure a buzzer BZ and microcontroller output port and join, buzzer is made corresponding sound production prompt according to the judgement of user BMI value.
Configure [unit/setting] button SW1 and microcontroller input port and join, [unit/setting] key SW1 adopts special operational mode to realize Conversion of measurement unit, pattern switching, user's selection and height setting and other settings.
Display G4 adopts common weighing scale display form shown in Fig. 7, or the simple and easy BMI weighing scale display form shown in Fig. 8, and type of display is LCD (liquid crystal) display or LED (light emitting diode) display or other nixie displaies.
The demonstration character of the present embodiment and display format explanation:
Owing to adopting this simple nixie display, the present embodiment adopts some simple characters and form to represent specific meaning:
1) user's character, user number and display format: prefix represents user (User) with letter U or P, user number be user prestore numbering Un, n=1～8, can there be 8 users selective, for example No. 2 user's display formats are " U2 " (seeing Figure 12), and user also available P (Person) represents;
2) height character and display format: prefix represents height (High) with alphabetical H or h, display format is " H height values ", unit of weight is that metric system kgShi， height unit is centimetre (cm), and for example height 170cm is shown as " H 170 " (seeing Figure 14); When unit of weight is that pound (lb) Shi， height unit made in Great Britain is foot-inch, for example 5 feet of 7 inches of display formats of height are " H 5:7 " (seeing Figure 15).
3) age character and display format: prefix represents the age (Age) with alphabetical A, display format is " A age value ", for example display format is " A 30 " (seeing Figure 16) 30 years old age.
4) BMI value display format: while showing BMI value, prefix represents with alphabetical b, and display format is " b BMI value ", for example BMI value is 23.1 to be shown as " b 23.1 " (seeing Figure 17).
The present embodiment mode of operation or state description:
1) off-mode: during initial turn-on power supply, scale enters off-mode, now closes display G4, cuts off sensor G2 power supply, and microcontroller G1 enters sleep state, and circuital current is less than 3uA;
2) pattern of weighing: can only measure body weight (compatible mutually with common weighing scale), display format is shown in Fig. 9 or Figure 10;
3) user selection interface: select user number, display format is shown in Figure 12;
4) pattern is set: the user who selects is carried out to height setting (or individual subscriber parameter being set: sex, height, age arrange), and sex display format is shown in Figure 13, and height display format is shown in Figure 14 or Figure 15, and age display format is shown in Figure 16;
5) BMI pattern: carry out body weight and BMI and measure, user measures BMI after height (or individual parameter) must be first set, and BMI pattern display format is " u 0.0kg ", sees Figure 11.
The present embodiment [unit/setting] button SW1 operating instruction:
1) mode of operation of [unit/setting] key SW1 has: shortly press, longly press (1～3 second), pin and do not put (1～15 second scope), pin maintenance (pin do not put 5～15 seconds after), wait for a period of time (3～10 seconds); General short in revising currency, length presses operation mode or state switches, and waits for a period of time as confirming, enters next step.
2) weigh state (pattern) operation: short press [unit/setting] key SW1 is conversion unit, and long press (1～3 second) is switched to user selection interface;
3) user selection interface operation: short pressing [unit/setting] key SW1 selects user, user number adds 1, and (user number is from U1, U2,, change to U10, return U1), if long, press [unit/setting] key and enter the pattern of setting, if wait for 4 seconds for confirming that active user enters BMI pattern;
4) pattern height setting operation is set: short pressing [unit/setting] key once, height values adds 1, pinning [unit/setting] does not put height values and adds continuously 1 at a slow speed, pin and keep height values after 8 seconds (with step-length 1, or 2, or 5, or 10) progressively increase continuously fast, to shorten setup times, when being set to height maximum, (for example 240cm) returns to again height minima (for example 100cm), after waiting for 4 seconds and confirming, enters next step;
5) model age setting operation is set: short pressing [unit/setting] key once, age value adds 1, pinning [unit/setting] does not put age value and adds continuously 1 at a slow speed, pin and keep age value after 8 seconds (with step-length 1, or 2, or 5, or 10) progressively increase continuously fast, to shorten setup times, when being set to the oldest value, (for example 100 years old) returns to again height minima (for example 10 years old), enters next step after waiting for confirmation in 4 seconds.
Measured body weight mode (referring to Figure 18): at off-mode, press [unit/setting] key SW1 start, microcontroller G1 is waken up, electrical switch K1 is set to 1, microcontroller G1 enters mode of operation, electrical switch K2 connects simultaneously, by VS port, to sensor, power, after scale start, first sampling enters the pattern of weighing (seeing Fig. 9) after getting zero demonstration " 0.0 ", now short pressing [unit/setting] the key kg of selection unit or lb, people's upper weighing platform of standing, sensor G2 is converted to by gravity the AI+ that signal of telecommunication Us is sent to microcontroller G1, AI-end, through microcontroller G1 internal amplifier, analog-digital converter A amplifies and is converted to digital quantity, treated, after calculating, obtain the gravimetric value of institute's check weighing thing, delivering to display G4 shows again, when weight is stablized, indicating value is locked, reads the body weight value that indicating value is surveyed human body, and indicating value kept after several seconds, scale automatic shutdown, now, closes display G4, electrical switch K2 disconnects and cuts off sensor G2 power supply, and putting electrical switch K1 is 0, and microcontroller G1 enters sleep state.
User selects and height set-up mode (referring to Figure 18): press [unit/setting] key SW1 start and enter the pattern of weighing, length is pressed [unit/setting] key and is entered user selection interface (seeing Figure 12), " user number " dodges and shows, short pressing [unit/setting] key is selected user, and user number adds 1; Length is pressed [unit/setting] key and is entered the pattern of setting, active user (for example U2) height is arranged, " height values " dodged and shown (seeing Figure 14), now, short pressing [unit/setting] key, height values adds 1, pin [unit/setting] key and do not put height values and add continuously 1 at a slow speed, pin and keep height values after 8 seconds (with step-length 1, or 2, or 5, or 10) progressively increase continuously fast, to shorten setup times, when be set to meet the height values of oneself time, after waiting for confirmation in 4 seconds, enter BMI pattern, height setting completes.
BMI metering system (referring to Figure 18): press [unit/setting] key SW1 start and enter the pattern of weighing, length is pressed [unit/setting] key and is entered user selection interface (seeing Figure 12), " user number " dodges and shows, short pressing [unit/setting] key is selected the user number (for example U2) of oneself, after waiting for confirmation in 4 seconds, enter BMI pattern (seeing Figure 11), while showing " u 0.0 ", on subscriber station, weighing platform is weighed, after weight locking, carry out BMI calculating, echo user number " U2 " afterwards, Alternation Display user's body weight value (seeing Figure 10) and BMI value (seeing Figure 17), and preserve the data survey, when showing BMI value, according to BMI value, judge, buzzer sends corresponding whistling to point out health: underweight is sent out " flute " sound, Normal-weight is sent out " Di-Di " two sound, overweight is sent out " Di-Di-Di " three sound, body obesity is sent out " Di-Di-Di-Di " four tones of standard Chinese pronunciation.
The automatic metering system of body weight (referring to Figure 18): the present embodiment, when off-mode, use microcontroller G1 timer internal, at interval of certain hour (0.5～1.5 second), microcontroller G1 is waken up, sensor G2 is carried out in short-term to the scanning of (1～10 millisecond) quick sampling, when detecting someone, step on weighing platform, for example, when weight is greater than start weight (5 kilograms), scale Auto Power On, microcontroller G2 enters duty, connect sensor G2 power supply, enter the pattern of weighing, and show current weight, after weight locking, people plays scale immediately, indicating value kept after several seconds, scale automatic shutdown.
The automatic metering system of BMI Intelligent Recognition (referring to Figure 18): under off-mode, weighing platform on user directly stands, scale Auto Power On is also weighed, after weight locking, if 3～5 seconds descendants not play scale, just automatic the user's weight deposited before or BMI data and currency are compared, when finding immediate data, just choose this user (for example U2) and calculate BMI value as active user, echo is shown after active user " U2 ", Alternation Display body weight and BMI value; As long as user had measured BMI value one time, preserve weight data, just can utilize the automatic measurement function of BMI Intelligent Recognition to find user, carry out BMI and automatically measure, save button operation and measure the loaded down with trivial details of BMI.
Because the BMI criterion of some countries and regions may be relevant with sex and age, need to arrange user's individual parameter (sex, height, age); The present embodiment can adopt the simple and easy BMI weighing scale display shown in Fig. 8 that individual parameter is set, and set-up mode is as described below.
Individual subscriber parameter set-up mode (referring to Figure 19): press [unit/setting] key SW1 start and enter the pattern of weighing, length is pressed [unit/setting] key and is entered user selection interface (seeing Figure 12), short pressing [unit/setting] key is selected user, length is pressed [unit/setting] key and is entered the pattern of setting, and setting steps is:
The first step arranges sex (seeing Figure 13), and short pressing [unit/setting] key is selected sex, after waiting for 4 seconds and confirming, enters next step;
Second step arranges height (seeing Figure 14 or Figure 15), short pressing [unit/setting] key once, height values adds 1, pinning [unit/setting] key does not put height values and adds continuously 1 at a slow speed, pin and keep height values after 8 seconds (with step-length 1, or 2, or 5, or 10) progressively increase continuously fast, after waiting for 4 seconds and confirming, enter next step;
The 3rd step arranges the age (seeing Figure 16), short pressing [unit/setting] key once, age value adds 1, pin [unit/setting] key and do not put age value and add continuously 1 at a slow speed, pin and keep age value after 8 seconds (with step-length 1, or 2, or 5, or 10) progressively increase continuously fast, after waiting for 4 seconds and confirming, enter BMI pattern, setting completes.
As shown in Figure 3, for the embodiment of the present invention two circuit block diagrams, be " [unit/setting] key SW1+[vibroswitch] Kz " combining form, different from embodiment mono-: to have configured [vibroswitch] KZ, be connected with microcontroller input port, do vibration start, with the common weighing scale of more compatible vibration starts.
Vibration start-up mode: when rapping weighing platform with foot, [vibroswitch] KZ is closed, and microcontroller G1 is changed awake, the start of guiding scale enters the pattern of weighing.
The display format of embodiment bis-, button SW1 mode of operation, measured body weight mode, user are selected identical with embodiment mono-with height set-up mode, BMI metering system, the automatic metering system of body weight, the automatic metering system of BMI Intelligent Recognition, individual subscriber parameter set-up mode.
As shown in Figure 4, be embodiment of the present invention three-circuit block diagram, be " [setting] key SW1+[unit switch] Ku " combining form, different from embodiment mono-: to have configured a toggle switch Ku, be connected with microcontroller input port, office's conversion; Toggle switch Ku push position 0 for unit K G (kilogram), push 1 for the LB of unit (pound), with common weighing scales of more compatible use toggle switch conversion units.
Embodiment tri-, and button SW1 is [setting] key (without unit conversion functions), and operation mode switches, user selects and height setting.
The display format of embodiment tri-, button SW1 mode of operation, measured body weight mode, user are selected identical with embodiment mono-with height set-up mode, BMI metering system, the automatic metering system of body weight, the automatic metering system of BMI Intelligent Recognition, individual subscriber parameter set-up mode.
As shown in Figure 5, be the embodiment of the present invention four circuit block diagrams, be " [unit/Δ] key SW1+[setting] key SW2 " combining form, different from embodiment mono-: configured two buttons, [unit/Δ] key SW1, as Conversion of measurement unit and the modification current value of progressively increasing; [setting] key SW2, switches and confirms with operation mode.
Embodiment tetra-, measured body weight mode: press [setting] key SW2 start and enter the pattern of weighing, show " 0.0 ", following measured body weight is with embodiment mono-.
Embodiment tetra-, and user selects and height set-up mode: press [setting] key SW2 start and enter the pattern of weighing, if now by the conversion of [unit/Δ] JianSW1 office; Press [setting] key SW2 and enter user selection interface, now press [unit/Δ] key SW1 and select user, user number adds 1, length is pressed [setting] key and is entered the pattern of setting, and pattern is being set, and short pressing [unit/Δ] key once, height values adds 1, pin [unit/Δ] key and do not put height values and add continuously 1 at a slow speed, pin and keep height values after 8 seconds (with step-length 1, or 2, or 5, or 10) progressively increase continuously fast, press after [setting] key SW2 confirms and enter BMI pattern, height setting completes.
Embodiment tetra-, BMI metering system: press [setting] key SW2 start and enter the pattern of weighing, press [setting] key SW2 and enter user selection interface, press [unit/Δ] key SW1 and select user number, short pressing [setting] key SW2 enters BMI pattern after confirming, following body weight and BMI measure with embodiment mono-.
Embodiment tetra-, individual subscriber parameter set-up mode: while adopting the simple and easy BMI weighing scale display shown in Fig. 8 that individual parameter is set, pattern setting " sex, height, age " is being set, [unit/Δ] key is revised or adds 1, pins and do not slow down speed and add continuously 1, pin and keep the mode of progressively increasing fast for 8 seconds to revise parameter with short pressing, and [settings] key SW2 enters next step as confirmation.
The display format of embodiment tetra-, button SW1 mode of operation, the automatic metering system of body weight, the automatic metering system of BMI Intelligent Recognition are identical with embodiment mono-.
Embodiment five, energy-saving BMI healthy human body scale, be on embodiment mono-(Fig. 2) or embodiment bis-(Fig. 3) or embodiment tri-(Fig. 4) or embodiment tetra-(Fig. 5) circuit, realize energy-conservation.
Leisure-sampling work the ideograph that Figure 6 shows that the energy-saving BMI healthy human body of embodiment five scale, Tx is the leisure state time, and Ty is the sample states time, and T is the time in a leisure-sampling work cycle.After scale start, enter the pattern of weighing, now utilize power saving and the two kinds of patterns of work of microcontroller G1, make the alternation of simple and easy BMI healthy human body at leisure state Tx and sample states Ty.
Under leisure state, microcontroller G1 is set to 0 by inner electrical switch K1, and microcontroller G1 enters battery saving mode, K2 is disconnected to the power supply of cutting off sensor simultaneously, only opens demonstration, the electric current I of now lying fallow x less (being about 10～30 microamperes).
Microcontroller G1 is waken up at interval of certain leisure time Tx, put electrical switch K1 and put 1, microcontroller G1 enters mode of operation, and connect electrical switch K2 and power to sensor, make scale enter the state of weighing of sampling, carry out weight measurement, electric current large (approximately position is 2～4 milliamperes) now, the rear leisure state that enters heavily again of having sampled.
The present embodiment, in the pattern of weighing, is always operating at the recurrent state of leisure-sampling-leisure, as long as suitably leisure time Tx is extended, the sampling time, Ty shortened relatively, and the average current of circuit is reduced, and just can improve energy-saving efficiency.
Claims (11)
1. a simple and easy BMI healthy human body scale, comprise microcontroller, sensor, display, button, buzzer, switch and power subsystem, it is characterized in that: microcontroller adopts the special IC of built-in 2K byte program memorizer, and (model has: hy11P52, hy11p32, hy11p12, hy11p22, fs9932, fs9934, fs98o21, fs98o01, fs98o02, fs98o03, csu1182, csu1183, csu1185, sn8p1927, sn8p1937, sn8p1947), inside comprises amplifier, analog-digital converter, regulated power supply, electrical switch, the functional modules such as display driver, microcontroller has two kinds of patterns, and a kind of is mode of operation, and a kind of is battery saving mode.
2. simple and easy BMI healthy human body scale according to claim 1, is characterized in that: the anodal E+ of probe power is connected with microcontroller port, the break-make of the power supply of the electrical switch control sensor by microcontroller inside; Signal output port S+, the S-of sensor is connected with microcontroller analog input port AI+, AI-, and sensor signal Us amplifies and converts digital quantity to through microcontroller internal amplifier, analog-digital converter.
3. simple and easy BMI healthy human body scale according to claim 1, it is characterized in that: display adopts common weighing scale display form shown in Fig. 7, or the simple and easy BMI weighing scale display form shown in Fig. 8, type of display is LCD (liquid crystal) display or LED (light emitting diode) display or other nixie displaies.
4. simple and easy BMI healthy human body scale according to claim 1, it is characterized in that: configure a buzzer and microcontroller output port and join, when showing BMI value, according to user BMI value, judge, buzzer sends corresponding whistling to point out health: underweight is sent out " flute " sound, Normal-weight is sent out " Di-Di " two sound, and overweight is sent out " Di-Di-Di " three sound, and body obesity is sent out " Di-Di-Di-Di " four tones of standard Chinese pronunciation.
5. simple and easy BMI healthy human body scale according to claim 1, it is characterized in that: configure [unit/setting] button and microcontroller input port and join, [unit/setting] key adopts special operational mode to realize Conversion of measurement unit, pattern switching, user's selection and height setting or the setting of individual subscriber parameter.
6. according to simple and easy BMI healthy human body scale described in claim 1 or 5, it is characterized in that: as extend type, can have " [unit/setting] key+[vibroswitch] " combination (for example facility example two) or " [setting] key+[unit switch] " combination (for example facility example three) or " [unit/Δ] key+[setting] key " combination (for example facility example four).
7. according to simple and easy BMI healthy human body scale described in claim 1 or 5,6, it is characterized in that: the mode of operation of SW1 key (i.e. [unit/setting] key or [setting] key or [unit/Δ] key) has: shortly press, longly press (1～3 second), pin and do not put (1～15 second scope), pin maintenance (pin do not put 5～15 seconds after), wait for a period of time (3～10 seconds); General short in revising currency, length presses operation mode or state switches, and waits for a period of time as confirming, enters next step.
8. according to simple and easy BMI healthy human body scale described in claim 1 or 3,5,6,7, it is characterized in that: the setting operation at height or age, the short SW1 key of pressing, magnitude value progressively increases 1, pins SW1 key and does not put numerical value and progressively increase continuously 1 at a slow speed, pin and keep after 8 seconds numerical value (with step-length 1, or 2, or 5, or 10) progressively increase continuously fast, wait for confirmation in 4 seconds, enter next step.
9. according to simple and easy BMI healthy human body scale described in claim 1 or 3, it is characterized in that: stipulate that some simple characters and form are to represent specific meaning: prefix represents user (User) with letter U or P, and for example No. 2 user's display formats are " U2 " (seeing Figure 12); Prefix represents height (High) with alphabetical H or h, display format is " H height values ", for example height 170cm is shown as " H 170 " (seeing Figure 14) ，Ruo height unit for foot-inch, and for example 5 feet of 7 inches of display formats of height are " H 5:7 " (seeing Figure 15); Prefix represents the age (Age) with alphabetical A, and display format is " A age value ", and for example 30 years old age was shown as " A 30 " (seeing Figure 16); Prefix represents BMI value with alphabetical b, and display format is " b BMI value ", and for example BMI value is 23.1 to be shown as " b 23.1 " (seeing Figure 17).
10. according to claim 1, or 2, 3, 4, simple and easy BMI healthy human body scale described in 9, it is characterized in that: the automatic metering system of BMI Intelligent Recognition, when off-mode, microcontroller is at interval of certain hour (0.5～1.5 second), open sensor power supply, sensor is carried out to quick sampling scanning, weighing platform on user directly stands, when weight is greater than start weight, scale Auto Power On is also weighed, after weight locking, if people does not play scale, after 3～5 seconds, scale is compared to the user's weight deposited before or BMI data and currency automatically, when finding immediate data, just choose this user and calculate BMI value as active user.
11. according to simple and easy BMI healthy human body scale described in claim 1 or 2,3, it is characterized in that: the realization of energy-saving BMI healthy human body scale, after scale start, enter the pattern of weighing, now utilize power saving and two kinds of patterns of work of microcontroller, make the alternation of simple and easy BMI healthy human body at leisure state Tx and sample states Ty, energy-conservation to realize; Under leisure state, microcontroller enters battery saving mode, cuts off the power supply of sensor simultaneously, only opens demonstration, the electric current I of now lying fallow x less (being about 10～30 microamperes); Microcontroller is waken up at interval of certain leisure time Tx, enters mode of operation, and connects sensor power supply, make scale enter the state of weighing of sampling, carry out weight measurement, electric current large (approximately position is 2～4 milliamperes) now, the rear leisure state that enters heavily again of having sampled; As long as suitably leisure time Tx is extended, the sampling time, Ty shortened relatively, just can improve energy-saving efficiency.
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Application publication date: 20140122 |