CN205373858U - Electronic scale of human impedance of high -frequency measurement - Google Patents
Electronic scale of human impedance of high -frequency measurement Download PDFInfo
- Publication number
- CN205373858U CN205373858U CN201520948290.2U CN201520948290U CN205373858U CN 205373858 U CN205373858 U CN 205373858U CN 201520948290 U CN201520948290 U CN 201520948290U CN 205373858 U CN205373858 U CN 205373858U
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- China
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- unit
- human body
- micro controller
- frequency measurement
- controller unit
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- Expired - Fee Related
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- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model provides an electronic scale of human impedance of high -frequency measurement, including the balance board, press unit, the unit of weighing, the human anti measuring unit that hinders, micro controller unit, display element and calibration memory cell, press unit, the unit of weighing, the human anti measuring unit that hinders, a display uni, calibration memory cell is connected with the micro controller unit electricity simultaneously, and be equipped with the power for whole circuit power supply, the balance board is non - conducting material, the human anti measuring unit that hinders establishes two electrodes that correspond two human feet in the below of balance board including corresponding, an interchange amplifier circuit who uses operational amplifier as the core, stand in the top of balance board when the foot, form two electric capacity between two feet and the metal sheet electrode, two electric capacity that form are connected with interchange amplifier circuit electricity with micro controller unit respectively. The utility model discloses an it is human to have adopted the electric capacity form to connect to the high -frequency wave detects human resistance, thus the title face can design more succinct, more pleasing to the eye.
Description
Technical field
This utility model belongs to field of measuring techniques, particularly to the electronic scale of a kind of high frequency measurement human body impedance.
Background technology
The principle of the electronic scale of conventional measurement fat content is to utilize tissue to be difficult to conduct electricity, and the characteristic of muscle moisture easy conductive, using the measurement of biologic resistance method, flow through the person according to electric current, the change of resistivity carrys out the various component contents of assessor.
The way of the existing electronic scale surveying fat is to arrange two pieces of conducting metals in title face, and people stands on a metal plate, forms electricity backflow with people, then information fed back in central processing unit after metallic plate energising.This electronic scale have at the surface configuration metallic plate of electronic scale, and therefore outward appearance is extremely ugly.
Summary of the invention
The purpose of this utility model is to survey fat electronic scale Problems existing for existing, and provides the electronic scale of a kind of high frequency measurement human body impedance being measured fat by capacitance principle.
The purpose of this utility model can be realized by following technical proposal: the electronic scale of a kind of high frequency measurement human body impedance, including scale plate, push-button unit, weighing unit, human body resistance measuring unit, micro controller unit, display unit and calibration memory element, push-button unit, weighing unit, human body resistance measuring unit, display unit, calibration memory element electrically connects with micro controller unit simultaneously, and to be provided with power supply be that whole circuit is powered, it is characterized in that, described scale plate is non-conducting material, human body resistance measuring unit includes two cube electrodes being correspondingly arranged at the lower section correspondence human body bipod of scale plate, the ac amplifier circuit that one is core with operational amplifier, when feet station is above scale plate, two electric capacity are formed between bipod and plate electrodes, two electric capacity formed electrically connect with micro controller unit and ac amplifier circuit respectively.
Described two cube electrodes are connected with signal incoming end FAT1 and FAT2 respectively, and wherein signal incoming end FAT1 connects the PT observing and controlling end of micro controller unit, and signal incoming end FAT2 connects ac amplifier circuit.
Described ac amplifier circuit is connected with the PT observing and controlling end of micro controller unit equally.
Described scale panel material is glass.
Compared with prior art, this utility model change existing needs title face dispose sheet metal form, have employed capacitive form connect human body, detect human body resistance with high frequency waves, therefore claim face can design more succinct, more attractive.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of weighing unit, human body resistance measuring unit, micro controller unit, calibration memory element.
Fig. 2 is the circuit diagram forming electric capacity after human body is connected into.
Fig. 3 is the graph of a relation of each module.
Fig. 4 is the foot structure chart with scale plate, electrode of people.
In figure, 1, weighing unit；2, micro controller unit；3, calibration memory element；4, human body resistance measuring unit；5, display unit；6, push-button unit；7, electrode；8, scale plate.
Detailed description of the invention
The following is specific embodiment of the utility model and in conjunction with accompanying drawing, the technical solution of the utility model is further described, but this utility model is not limited to these embodiments.
As shown in Figure 3, this utility model includes scale plate 8, push-button unit 6, weighing unit 1, human body resistance measuring unit 4, micro controller unit 2, display unit 5 and calibration memory element 3, push-button unit 6, weighing unit 1, human body resistance measuring unit 4, display unit 5, calibration memory element 3 electrically connect with micro controller unit 2 simultaneously, and to be provided with power supply be that whole circuit is powered.
Shown in Fig. 1, Fig. 2, Fig. 4, human body resistance measuring unit 4 includes 7, the ac amplifier circuit being core with operational amplifier of two cube electrodes being correspondingly arranged at the lower section correspondence human body bipod of scale plate 8.Described scale plate 8 is glass, when feet station is above scale plate 8, forms two electric capacity C between bipod and plate electrodes 7.Two cube electrodes 7 are connected with signal incoming end FAT1 and FAT2 respectively, FAT1 is connected with the PT1.7 of micro controller unit 2, FAT2 is connected with the FAT2 signal end in human body resistance measuring unit 4, and the PT1.2 signal end in human body resistance measuring unit 4 is connected with the PT1.2 signal end of micro controller unit 2 simultaneously.
As nobody on scale face, or time people has worn shoes, human body impedance R is equivalent to infinity, and the output of operational amplifier is equal to anode input value=VBL/3, and micro controller unit 2 thinks low electricity frequency；
When having people's light feet station on scale face, human body impedance R has just accessed ac amplifier circuit, FAT1 is connected with the PT1.7 of micro controller unit 2, PT1.7 exports one group of high-frequency square wave, operational amplifier is just operated in exchange magnifying state, the signal amplitude of the output of operational amplifier is linear with human body impedance, the output of operational amplifier is connected with the PT1.2 of micro controller unit 2, by the micro controller unit 2 frequency to PT1.2 message number and amplitude measurement, may determine that human body accesses circuit, calibrated by the resistance value of circuit, human body impedance value can be calculated.
Claims (5)
1. the electronic scale of a high frequency measurement human body impedance, including scale plate, push-button unit, weighing unit, human body resistance measuring unit, micro controller unit, display unit and calibration memory element, push-button unit, weighing unit, human body resistance measuring unit, display unit, calibration memory element electrically connects with micro controller unit simultaneously, and to be provided with power supply be that whole circuit is powered, it is characterized in that, described scale plate is non-conducting material, human body resistance measuring unit includes two cube electrodes being correspondingly arranged at the lower section correspondence human body bipod of scale plate, the ac amplifier circuit that one is core with operational amplifier, when feet station is above scale plate, two electric capacity are formed between bipod and plate electrodes, two electric capacity formed electrically connect with micro controller unit and ac amplifier circuit respectively.
2. the electronic scale of a kind of high frequency measurement human body impedance according to claim 1, it is characterized in that, described two cube electrodes are connected with signal incoming end FAT1 and FAT2 respectively, and wherein signal incoming end FAT1 connects the PT observing and controlling end of micro controller unit, and signal incoming end FAT2 connects ac amplifier circuit.
3. the electronic scale of a kind of high frequency measurement human body impedance according to claim 1 and 2, it is characterised in that described ac amplifier circuit is connected with the PT observing and controlling end of micro controller unit equally.
4. the electronic scale of a kind of high frequency measurement human body impedance according to claim 1 and 2, it is characterised in that described scale panel material is glass.
5. the electronic scale of a kind of high frequency measurement human body impedance according to claim 4, it is characterised in that described scale panel material is glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520948290.2U CN205373858U (en) | 2015-11-21 | 2015-11-21 | Electronic scale of human impedance of high -frequency measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520948290.2U CN205373858U (en) | 2015-11-21 | 2015-11-21 | Electronic scale of human impedance of high -frequency measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205373858U true CN205373858U (en) | 2016-07-06 |
Family
ID=56260604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520948290.2U Expired - Fee Related CN205373858U (en) | 2015-11-21 | 2015-11-21 | Electronic scale of human impedance of high -frequency measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205373858U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333936A (en) * | 2015-11-21 | 2016-02-17 | 马俊 | Electronic scale measuring impedance of human body at high frequency |
| CN106419916A (en) * | 2016-11-25 | 2017-02-22 | 上海中嘉衡泰医疗科技有限公司 | Device and method for measuring electrophysiological parameter of human body |
-
2015
- 2015-11-21 CN CN201520948290.2U patent/CN205373858U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333936A (en) * | 2015-11-21 | 2016-02-17 | 马俊 | Electronic scale measuring impedance of human body at high frequency |
| CN106419916A (en) * | 2016-11-25 | 2017-02-22 | 上海中嘉衡泰医疗科技有限公司 | Device and method for measuring electrophysiological parameter of human body |
| CN106419916B (en) * | 2016-11-25 | 2023-08-01 | 上海中嘉衡泰医疗科技有限公司 | Human body electrophysiological parameter measuring device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160706 Termination date: 20211121 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |