CN107468216A - Moisture of skin measuring circuit and moisture of skin measuring instrument - Google Patents
Moisture of skin measuring circuit and moisture of skin measuring instrument Download PDFInfo
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- CN107468216A CN107468216A CN201710881429.XA CN201710881429A CN107468216A CN 107468216 A CN107468216 A CN 107468216A CN 201710881429 A CN201710881429 A CN 201710881429A CN 107468216 A CN107468216 A CN 107468216A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/44—Detecting, measuring or recording for evaluating the integumentary system, e.g. skin, hair or nails
- A61B5/441—Skin evaluation, e.g. for skin disorder diagnosis
- A61B5/443—Evaluating skin constituents, e.g. elastin, melanin, water
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/053—Measuring electrical impedance or conductance of a portion of the body
- A61B5/0531—Measuring skin impedance
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/74—Details of notification to user or communication with user or patient ; user input means
- A61B5/746—Alarms related to a physiological condition, e.g. details of setting alarm thresholds or avoiding false alarms
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Biophysics (AREA)
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- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Veterinary Medicine (AREA)
- Physics & Mathematics (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Dermatology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Physiology (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
This application discloses a kind of moisture of skin measuring circuit and moisture of skin measuring instrument, the moisture of skin measuring circuit includes the first probe groups, voltage follower, electric capacity, first resistor and second resistance, wherein：The first probe in first probe groups power on/off under the control of control chip；The first end of electric capacity and the first end of first resistor are electrically connected with, the second end of electric capacity and the second end ground connection of first resistor；The first end of second resistance is electrically connected with the first probe in the first probe groups, and the second end and the second probe in the first probe groups of second resistance are electrically connected with；Second end of second resistance and the first end of first resistor are electrically connected with, and are electrically connected with by voltage follower and data output end.The application passes through the design to circuit, it is possible to achieve the accurate test to moisture of skin situation.
Description
Technical field
The invention belongs to circuit design field, more particularly to a kind of moisture of skin measuring circuit and moisture of skin measuring instrument.
Background technology
In daily life, people are frequently necessary to differentiate the moisture of oneself skin, so that ensure can be in time in skin overdrying
Moisturizing is carried out to skin, can be deoiled in time when skin is excessively oily.
But current people can only rule of thumb judge the moisture situation of skin, and the horizontal judgement of the skin being empirically derived
As a result the not necessarily actual moisture situation of skin, it is thus possible to the skin care method to make mistake can be obtained.
The content of the invention
The purpose of the application is to provide for a kind of moisture of skin measuring circuit and moisture of skin measuring instrument, and it can be realized
Accurate test to moisture of skin situation.Concrete technical scheme is as follows：
In a first aspect, the invention provides a kind of moisture of skin measuring circuit, the moisture of skin measuring circuit includes the first probe
Group, voltage follower, electric capacity, first resistor and second resistance, wherein：The first probe in first probe groups is in control chip
The lower power on/off of control；The first end of the first end of electric capacity and first resistor is electrically connected with, the second end of electric capacity and first resistor
Second end is grounded；The first end of second resistance is electrically connected with the first probe in the first probe groups, the second end of second resistance
It is electrically connected with the second probe in the first probe groups；Second end of second resistance also electrically connects with the first end of first resistor
Connect, and be electrically connected with by voltage follower and data output end.
By setting the first probe and the second probe come contact measured skin so that the electric conductivity of skin to be measured is reacted in number
In data according to output end output, when the water content of skin to be measured is more, electric conductivity is stronger, and the value of data output end output is also got over
Greatly, so that the data of data output end output can be sensitive and correctly reflect the skin to be measured that the first probe groups are detected
The aqueous situation of skin, and then improve the judgement degree of accuracy to the water supply opportunity of skin to be measured.By by second resistance and probe
Between the resistance that detects（That is dermatopolyneuritis）Parallel connection, because dermatopolyneuritis is smaller so that the change of dermatopolyneuritis causes whole
The change of body partial pressure, play a part of stably measured result using second resistance.
In addition, by the setting of voltage follower, make the circuit of data output end opening position not influence partial pressure path.
Optionally, moisture of skin measuring circuit also includes the base stage electricity of the first triode, control chip and the first triode
Property connection, the colelctor electrode of the first triode is electrically connected with the power supply, the in the emitter stage of the first triode and the first probe groups
One probe is electrically connected with.
By the setting of the first triode, it can make it that control chip optionally allows the first probe groups according to measurement request
It is powered, and then realizes the water content test of the skin detected to the first probe groups.
Optionally, moisture of skin measuring circuit also includes second group of probe, the second triode and 3rd resistor, control chip
It is electrically connected with the base stage of the second triode, the colelctor electrode of the second triode is electrically connected with the power supply, the transmitting of the second triode
Pole and the first probe of second group of probe are electrically connected with；First probe of second group of probe break-make under the control of control chip
Electricity；The first end of 3rd resistor and the first probe of second group of probe are electrically connected with, the second end of 3rd resistor and second group of spy
Second probe of pin is electrically connected with；Second end of 3rd resistor is also electrically connected with the first end of first resistor.
By the setting of second group of probe, the second triode, moisture of skin measurement can be asked by the measurement of two groups of probes
The average value of measurement data so that measurement result is more accurate.In addition, pass through the skin between 3rd resistor and second group of probe
Resistor coupled in parallel so that the change of dermatopolyneuritis causes the change of overall partial pressure, and stably measured result is played using second resistance
Effect.
Optionally, when the first probe of the first probe groups is powered under the control of control chip, the first of the second probe groups
Probe powers off under the control of control chip；When first probe of the second probe groups is powered under the control of control chip, first
First probe of probe groups powers off under the control of control chip.
Optionally, the second probe in the second probe and the second probe groups in the first probe groups is same probe.
Optionally, first resistor is fixed resistance or adjustable resistance.
Optionally, moisture of skin measuring circuit also includes change-over circuit, the input of change-over circuit and voltage follower
Output end is electrically connected with, and the output end of change-over circuit is as data output end；Second end of second resistance and voltage follower
First input end connects, and the second input of voltage follower and the output end of voltage follower connect.
Optionally, moisture of skin measuring circuit also includes detecting head, and each group probe is accessed on detecting head.
Second aspect, present invention also offers a kind of moisture of skin measuring instrument, it is characterised in that moisture of skin measuring instrument bag
The moisture of skin measuring circuit provided in control chip and such as first aspect and the various possible implementations of first aspect is provided,
The control chip and at least one set of probe groups of moisture of skin measuring circuit are electrically connected with, control chip control one of which probe
During the energization of group, other probe groups are controlled to power off.
Optionally, moisture of skin measuring instrument also includes prompting device, and the prompting device and the data of moisture of skin measuring circuit are defeated
Go out end to be electrically connected with, to prompt the data that data output end exports.
Optionally, when the data of data output end output are higher than default oily threshold value excessively, prompting device also carried out oil letter
Breath prompting；When the data of data output end output are less than default overdrying threshold value, prompting device also carries out overdrying information alert, mistake
Dry threshold value was less than oily threshold value.
It should be appreciated that the general description and following detailed description of the above are only exemplary, this can not be limited
Invention.
Brief description of the drawings
Accompanying drawing herein is merged in specification and forms the part of this specification, shows the implementation for meeting the present invention
Example, and for explaining principle of the invention together with specification.
Figure 1A is a kind of circuit diagram of the moisture of skin measuring circuit provided in one embodiment of the invention；
Figure 1B is a kind of circuit diagram of the moisture of skin measuring circuit provided in another embodiment of the present invention；
Fig. 2 is a kind of structural representation of the moisture of skin measuring instrument provided in one embodiment of the invention.
Embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Following description is related to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Following exemplary embodiment
Described in embodiment do not represent and the consistent all embodiments of the present invention.On the contrary, they be only with it is such as appended
The example of the consistent apparatus and method of some aspects being described in detail in claims, of the invention.
In order to test the actual moisture situation of skin automatically, a kind of moisture of skin measurement electricity provided herein
Road, it can be detected to the actual moisture situation in skin, and corresponding output can reflect actual moisture situation in skin
Numerical value.Moisture of skin measuring circuit is explained with reference to Figure 1A.
Figure 1A is a kind of circuit diagram of the moisture of skin measuring circuit provided in one embodiment of the invention, the moisture of skin
Measuring circuit can include the first probe groups, voltage follower, electric capacity C0, first resistor R1 and second resistance R2, wherein：First
The first probe 11 in probe groups power on/off under the control of control chip；Electric capacity C0 first end and the first of first resistor R1
End is electrically connected with, electric capacity C0 the second end and first resistor R1 the second end ground connection；Second resistance R2 first end is visited with first
The first probe 11 in pin group is electrically connected with, and second resistance R2 the second end electrically connects with the second probe 12 in the first probe groups
Connect；Second resistance R2 the second end is also electrically connected with first resistor R1 first end, and defeated with data by voltage follower
Go out end to be electrically connected with.
Here first resistor R1 can be fixed resistance or adjustable resistance.Optionally, second resistance R2 can also be solid
Determine resistance or adjustable resistance., can be by first resistor in order to obtain accurate measurement result in test or experimentation
R1 and second resistance R2 are arranged to adjustable resistance, confirm preferable resistance by adjustable resistance.In production and in use, then can be with
First resistor R1 and second resistance R2 are disposed as fixed resistance, determined in resistance as test or experimentation preferable
First resistor R1 and second resistance R2 resistance combine.
In general, for human body skin, there are the spacing of a relatively good probe, and one group of relatively good resistance value
（R1、R2）, after finding preferable spacing and preferable resistance value, utilize voltage follower output result（It is designated as ADC results）Come
The percent moisture for display is converted, percent moisture is exported by data output end.The electric conductivity of skin is stronger, and data are defeated
The value for going out end output is bigger.
In test, the first probe 11 of the first probe groups and the second probe 12 need to connect with skin to be tested simultaneously
Touch, after contact, then possessing between the first probe 11 and the second probe 12 of the first probe groups has resistance, is designated as skin pricktest here
Resistance.
In order to realize that the aqueous situation of the skin detected using the first probe groups is measured, the moisture of skin is surveyed
The base stage that amount circuit can also include the first triode Q1, control chip MCU and the first triode Q1 is electrically connected with, the one or three pole
The colelctor electrode of pipe is electrically connected with power supply VCC, the electricity of the first probe 11 in the first triode Q1 emitter stage and the first probe groups
Property connection.So, the controlled chip MCU of the first triode Q1 base stage control, plays a part of switch.
In order to make it that measurement result is more accurate, the moisture of skin measuring circuit that the application provides can also be included extremely
Few second probe groups, the second probe groups are similar with the connected mode of the first probe groups, and the control of controlled chip is realized
Power on/off.
Specifically, refer to shown in Figure 1B, moisture of skin measuring circuit also include the second probe groups, the second triode Q2 and
3rd resistor, control chip MCU and the second triode Q2 base stage are electrically connected with, the second triode Q2 colelctor electrode and power supply electricity
Property connection, the second triode Q2 emitter stage is electrically connected with the first probe 21 of the second probe groups；The first of second probe groups
The power on/off under control chip MCU control of probe 21；First probe 21 of 3rd resistor R3 first end and the second probe groups
It is electrically connected with, 3rd resistor R3 the second end is electrically connected with the second probe 22 of the second probe groups；The second of 3rd resistor R3
End is also electrically connected with first resistor R1 first end.
Similar with second resistance R2,3rd resistor R3 can also be fixed resistance or adjustable resistance.Testing or testing
Cheng Zhong, in order to obtain accurate measurement result, 3rd resistor R3 can be also configured as adjustable resistance, pass through adjustable resistance
Confirm preferable resistance.In production and in use, can then be respectively provided with first resistor R1, second resistance R2 and 3rd resistor R3
For fixed resistance, resistance is preferable first resistor R1, the second resistance R2 and the 3rd electricity determined in test or experimentation
Hinder R3 resistance combination.
In the present embodiment, the second probe 12 in the first probe groups is same with the second probe 22 in the second probe groups
Probe.Certainly, in other embodiments, the second probe 22 in the second probe 12 and the second probe groups in the first probe groups
It can be different probes.
For the ease of detecting, in the present embodiment, each group probe is all connected on detecting head.
After contact human skin to probe, partial skin and second resistance R2 or 3rd resistor R3 are tested into shape in parallel
State, second resistance R2 or 3rd resistor R3 are played regulatory role, and the first resistor R1 partial pressures obtained are limited in into certain limit, so as to
Play stabilization.For example, probe detects the resistance of infinity, first resistor R1 and second resistance R2 partial pressures, when probe is visited
Measure less resistive, the resistance between probe（It is designated as dermatopolyneuritis）It is in parallel with second resistance R2, because the resistance of dermatopolyneuritis
It is smaller, it will play a leading role, the change of dermatopolyneuritis resistance causes the change of overall partial pressure.If there is no second resistance R2,
Change caused by dermatopolyneuritis will be very big and unstable, therefore should use second resistance R2, play the work of stably measured result
With.
In order to many pressure stabilization functions that plays, second resistance R2 and 3rd resistor R3 are larger resistance, for example are taken
Value can be 5M Ω, and it is 1.8M Ω that first resistor R1 value, which can then correspond to value,.
In actual applications, in order to obtain more accurate test result, the test to skin every time may each comprise
Testing procedure twice, when testing for the first time, control chip MCU controls the first probe groups to be powered, and control the second probe groups power-off, obtains
The first numerical value for taking data output end to export；Second when testing, and control chip MCU controls the second probe groups to be powered, control the
One probe groups power off, and obtain the second value of data output end output, regard the average value of the first numerical value and second value as this
The obtained numerical value of secondary test.
Generally, the data of voltage follower output intuitively reflect the water content of skin between probe, but this kind of data
Value and be not easy to the reading system that user is appreciated that, for the ease of understanding of the user to moisture content of skin and check, this
The water content of skin is converted processing in application.Therefore, in the application, moisture of skin measuring circuit can also include turning
Circuit is changed, the input of change-over circuit and the output end of voltage follower are electrically connected with, and the output end of change-over circuit is as data
Output end；The first input end of second end of second resistance and voltage follower connects, the second input of voltage follower with
The output end connection of voltage follower.Change-over circuit is changed the data that power supply follower output end exports, to be converted to
The numerical value of data display tube will be shown in.
Under control chip MCU control, empty survey can be judged whether by comparing ADC values, it is determined that being introduced between probe
After the electronics of human body skin, trigger two seconds, waveform stabilization is waited, because the ion in human body skin body fluid is in electric field action
Under, due phenomenon occurs, it is stable after general certain time so as to which direct current has variation, so, instrument will be delayed after certain time
Formally measured.
In order to obtain accurate numerical value, averaged after repeatedly testing can be carried out to skin, such as, carry out 22
Secondary measurement, abandons maximum and minimum value, then divided by 20 be averaging, obtain average ADC values, then carry out data conversion.
In summary, rag moisture of skin measuring circuit provided by the invention, the first probe and the second probe is set to connect
Touch skin to be measured so that the electric conductivity reaction of skin to be measured is aqueous when skin to be measured in the data of data output end output
Amount is more, and electric conductivity is stronger, and the value of data output end output is also bigger, so that the data of data output end output can be with quick
Feel and correctly reflect the aqueous situation for the skin to be measured that the first probe groups are detected, and then improve the confession to skin to be measured
The judgement degree of accuracy on water opportunity.Pass through the resistance that will be detected between second resistance and probe（That is dermatopolyneuritis）Parallel connection, due to
Dermatopolyneuritis is smaller so that the change of dermatopolyneuritis causes the change of overall partial pressure, and stably measured is played using second resistance
As a result effect.
Shown in Figure 2 present invention also provides a kind of moisture of skin tester, the moisture of skin tester 200 wraps
Measuring circuit containing moisture of skin 210 and control chip 220, the structure of moisture of skin measuring circuit 210 as shown in figure 1 a or figure 1b,
Here repeat no more.The control chip 220 and at least one set of probe groups of moisture of skin measuring circuit 210 are electrically connected with, control
When chip 220 controls the energization of one of which probe groups, other probe groups are controlled to power off.
Optionally, moisture of skin tester 200 goes back prompting device 230, the prompting device 230 and moisture of skin measuring circuit 210
Data output end be electrically connected with, with prompt data output end export data.
Optionally, when the data of data output end output are higher than default oily threshold value excessively, prompting device 230 also carried out oil
Information alert；When the data of data output end output are less than default overdrying threshold value, prompting device 230 also carries out overdrying information and carried
Show, overdrying threshold value was less than oily threshold value.
Optionally, prompting device 230 can be electronic display, and carrying out oily information by written form or graphic form carries
Show or overdrying information alert.
Optionally, prompting device 230 can also be speech player, and carrying out oily information alert or overdrying by voice messaging believes
Breath prompting.
Optionally, prompting device 230 can also be indicator lamp, by different indicator lamps, or different light colors, or not
Same light is closed or flashing state, carries out oily information alert or overdrying information alert.
In summary, moisture of skin tester provided by the invention, by by moisture of skin measuring circuit and control chip
It is connected, control chip is connected with prompting device so that, will after moisture of skin measuring circuit measures the water content situation of skin
The measurement data of output is sent to control chip, and control chip judges the data and default overdrying threshold value and excessively oily threshold value of measurement
Contrast, when less than overdrying threshold value, then manipulate prompting device carry out overdrying information alert, when higher than oily threshold value excessively, then operate
Prompting device carried out oily information alert, can effectively be accurately obtained the water content information of skin, moisture content of skin test mode
It is simple easily to realize.
Those skilled in the art will readily occur to the present invention its after considering specification and putting into practice the invention applied here
Its embodiment.The application be intended to the present invention any modification, purposes or adaptations, these modifications, purposes or
Person's adaptations follow the general principle of the present invention and the common knowledge in the art do not invented including the present invention
Or conventional techniques.Description and embodiments are considered only as exemplary, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be appreciated that the invention is not limited in the precision architecture for being described above and being shown in the drawings, and
And various modifications and changes can be being carried out without departing from the scope.The scope of the present invention is only limited by appended claim.
Claims (10)
1. a kind of moisture of skin measuring circuit, it is characterised in that the moisture of skin measuring circuit includes the first probe groups, voltage
Follower, electric capacity, first resistor and second resistance, wherein：
The first probe in first probe groups power on/off under the control of control chip；
The first end of the first end of the electric capacity and the first resistor is electrically connected with, the second end of the electric capacity and described first
The second end ground connection of resistance；
The first probe in the first end of the second resistance and first probe groups is electrically connected with, and the of the second resistance
Two ends are electrically connected with the second probe in first probe groups；
Second end of the second resistance is also electrically connected with the first end of the first resistor, and passes through the voltage follower
It is electrically connected with data output end.
2. moisture of skin measuring circuit according to claim 1, it is characterised in that the moisture of skin measuring circuit is also wrapped
The first triode is included, the base stage of the control chip and first triode is electrically connected with, the current collection of first triode
Pole is electrically connected with the power supply, and the emitter stage of first triode is electrically connected with the first probe in first probe groups.
3. moisture of skin measuring circuit according to claim 2, it is characterised in that the moisture of skin measuring circuit is also wrapped
Second group of probe, the second triode and 3rd resistor are included, the base stage of the control chip and second triode is electrically connected with,
The colelctor electrode of second triode is electrically connected with the power supply, the emitter stage of second triode and second group of probe
First probe is electrically connected with；
First probe of second group of probe power on/off under the control of the control chip；
The first end of the 3rd resistor and the first probe of second group of probe are electrically connected with, and the second of the 3rd resistor
End and the second probe of second group of probe are electrically connected with；
Second end of the 3rd resistor is also electrically connected with the first end of the first resistor.
4. moisture of skin measuring circuit according to claim 3, it is characterised in that the first probe of first probe groups
When being powered under the control of the control chip, the first probe of second probe groups breaks under the control of the control chip
Electricity；
When first probe of second probe groups is powered under the control of the control chip, the first of first probe groups
Probe powers off under the control of the control chip.
5. moisture of skin measuring circuit according to claim 3, it is characterised in that second in first probe groups visits
Pin is same probe with the second probe in second probe groups.
6. moisture of skin measuring circuit according to claim 1, it is characterised in that the first resistor be fixed resistance or
Adjustable resistance.
7. according to any described moisture of skin measuring circuit in claim 1 to 6, it is characterised in that the moisture of skin is surveyed
Amount circuit also includes change-over circuit, and the output end of the input of the change-over circuit and the voltage follower is electrically connected with, institute
The output end of change-over circuit is stated as the data output end；The of second end of the second resistance and the voltage follower
One input is connected, and the second input of the voltage follower is connected with the output end of the voltage follower.
8. a kind of moisture of skin measuring instrument, it is characterised in that the moisture of skin measuring instrument includes control chip and as right will
Ask any described moisture of skin measuring circuit in 1-7, the control chip and at least the one of the moisture of skin measuring circuit
Group probe groups are electrically connected with, and when the control chip controls the energization of one of which probe groups, control other probe groups to power off.
9. moisture of skin measuring instrument according to claim 8, it is characterised in that the moisture of skin measuring instrument also includes carrying
Show device, the prompting device and the data output end of the moisture of skin measuring circuit are electrically connected with, to prompt the data output
Hold the data of output.
10. moisture of skin measuring instrument according to claim 9, it is characterised in that
When the data of data output end output are higher than default oily threshold value excessively, the prompting device also carried out oily information and carried
Show；
When the data of data output end output are less than default overdrying threshold value, the prompting device also carries out overdrying information and carried
Show, the overdrying threshold value is less than the excessively oily threshold value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710881429.XA CN107468216A (en) | 2017-09-26 | 2017-09-26 | Moisture of skin measuring circuit and moisture of skin measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710881429.XA CN107468216A (en) | 2017-09-26 | 2017-09-26 | Moisture of skin measuring circuit and moisture of skin measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107468216A true CN107468216A (en) | 2017-12-15 |
Family
ID=60585908
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710881429.XA Pending CN107468216A (en) | 2017-09-26 | 2017-09-26 | Moisture of skin measuring circuit and moisture of skin measuring instrument |
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|---|---|---|---|---|
| CN1686048A (en) * | 2005-06-06 | 2005-10-26 | 清华大学 | Skin moisture measuring method |
| CN101038264A (en) * | 2007-02-13 | 2007-09-19 | 窦祥增 | Moisture tester for grain and oil crops |
| CN201001730Y (en) * | 2007-01-19 | 2008-01-09 | 廖植生 | Skin moisture test pen |
| CN203259491U (en) * | 2013-06-03 | 2013-10-30 | 慈溪市天野***配件有限公司 | Pure water testing pen |
| CN204228286U (en) * | 2014-10-28 | 2015-03-25 | 湖北永祥粮食机械股份有限公司 | A kind of Moisture Meter temperature collection circuit |
| CN206038099U (en) * | 2016-07-19 | 2017-03-22 | 深圳市拓普泰克电子有限公司 | Probe -type water level observation circuit and detection of water level equipment |
| CN208464052U (en) * | 2017-09-26 | 2019-02-05 | 江苏精微特电子股份有限公司 | Moisture of skin measuring circuit and moisture of skin measuring instrument |
-
2017
- 2017-09-26 CN CN201710881429.XA patent/CN107468216A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1686048A (en) * | 2005-06-06 | 2005-10-26 | 清华大学 | Skin moisture measuring method |
| CN201001730Y (en) * | 2007-01-19 | 2008-01-09 | 廖植生 | Skin moisture test pen |
| CN101038264A (en) * | 2007-02-13 | 2007-09-19 | 窦祥增 | Moisture tester for grain and oil crops |
| CN203259491U (en) * | 2013-06-03 | 2013-10-30 | 慈溪市天野***配件有限公司 | Pure water testing pen |
| CN204228286U (en) * | 2014-10-28 | 2015-03-25 | 湖北永祥粮食机械股份有限公司 | A kind of Moisture Meter temperature collection circuit |
| CN206038099U (en) * | 2016-07-19 | 2017-03-22 | 深圳市拓普泰克电子有限公司 | Probe -type water level observation circuit and detection of water level equipment |
| CN208464052U (en) * | 2017-09-26 | 2019-02-05 | 江苏精微特电子股份有限公司 | Moisture of skin measuring circuit and moisture of skin measuring instrument |
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