TWI614486B - A conductivity measuring device and test methods thereof - Google Patents

Abstract

The present invention discloses a conductance measuring device comprising a detecting platform extending downward to form a groove, wherein the first electrode and the second electrode are disposed in the groove, and the detecting module can supply a positive voltage to the first electrode and a negative voltage. The second electrode is configured to detect the conductivity of the tested skin care product according to the current value, the filter filters the noise for the conductivity, the amplifier increases the gain of the filtered conductivity, and the analog digital converter converts the conductivity of the gain. Converted into a digital conductivity signal, the digital signal of the microcontroller is converted into at least one digit conductivity data, and an accurate measurement result can be obtained according to the initial determination value and the slope determination value, which is determined by using the pH value in the past. In addition to avoiding measurement error, the way to maintain the product can avoid excessively cumbersome calibration procedures and costs.

Description

Conductivity measuring device and measuring method

The present invention relates to a measuring device and a measuring method, and more particularly to a conducting measuring device and a measuring method thereof.

From the early rouge gouache to the modern multi-functional makeup, skin care products, the variety of types and functions are constantly improving, but the more types, the more difficult it is to choose, plus the black heart products are frequently transmitted, the user uses it on the skin. The products on the market are not safe enough. Is it a guarantee that consumers can use these skin care products for a certain amount of safety?

When the skin care products are deteriorated, microorganisms are usually produced, and the microorganisms produce various acidic substances during the growth process, thereby changing the original pH value or the ion concentration of the skin care products, even if no microorganisms are produced, because the components of the components are deteriorated. Therefore, the balance and stability of various ingredients in the skin care products will also be destroyed. Such a situation will also affect the pH value or the concentration of ions. Based on this phenomenon, generally, the pH can be adjusted under constant temperature conditions. The value is measured, or the ion concentration is measured in terms of measuring conductivity.

When the pH value of the skin care product or the concentration of the ion is too large compared with the factory (the same temperature condition or temperature compensation), if there is an excessive difference, the skin care product may deteriorate.

It can be seen that the easiest way to know the lotion and care products that the public often use is not mild enough to irritate the skin. The simplest method is to measure its pH value (pH value).

Generally, the determination of lotion or skin care products is usually measured by pH value (also known as hydrogen ion concentration index, pH value). The pH value is a scale of hydrogen ion activity in the solution, that is, the degree of acidity and alkalinity of the solution in the usual sense. Metrics.

Under normal circumstances (25 ° C, 298K or so), drop some lotion or skin care products on the test paper. If the pH value is less than 7, the test paper is red and acidic; more than 7 and blue is alkaline. If it is close to pH 7 neutral or close to the skin pH value of 5.5, it means that the lotion or skin care products are mild and will not irritate the skin.

However, in general, the use of pH value to determine the skin care product, because it is easy to produce measurement error, it is necessary to use the detection liquid for error value correction, and these correction processes are very cumbersome and time consuming, using the detection fluid to make the error value Correction is also a cost overhead.

In view of this, it is known in the prior art how to solve the pH value to determine the measurement value error generated by the skin care product and how to avoid the cumbersome calibration procedure and cost, which is the problem to be solved by the present invention. In view of the above problems, the present invention provides a conductance measuring device and a measuring method for a skin care product, which will solve the above-mentioned drawbacks.

The main purpose of the present invention is to detect the conductivity of the tested skin care product based on the current value, and obtain a precise measurement result based on the initial determination value and the slope determination value. Compared with the past method of measuring the skin care product by using the pH value, the measurement value error can be avoided, and the cumbersome calibration procedure and cost can be avoided.

In order to achieve the above object, the present invention discloses a conductance measuring device for measuring at least one skin care product to be tested. The conductivity measuring device comprises a detecting platform extending downward to form a groove, and the first electrode and the second electrode are disposed in the groove. Electrode, and the tested skin care product is injected into the groove to cover the An electrode and a second electrode, the detecting module is electrically connected to the first electrode and the second electrode, and the detecting module is configured to supply a positive voltage to the first electrode and a negative voltage to the second electrode, and at the first electrode and When the second electrode is turned on, the conductivity of the tested skin care product is detected according to the current value, and the filter is electrically connected to the detecting module to receive the conductivity to filter the noise for the conductivity, and the amplifier is electrically connected to the filter. Receiving the filtered conductivity to increase the gain of the filtered conductivity, the analog digital converter is electrically connected to the amplifier, and receives the gain of the gain to convert the gain of the gain into a digital conductivity signal. The controller is electrically connected to the analog digital converter and receives the digital conductivity signal to convert the digital conductivity signal into at least one digit conductivity data.

A conductance measuring method for measuring at least one tested skin care product, the conductivity measuring method comprising the following steps, according to the current value, detecting the conductivity of the tested skin care product, filtering the conductivity to remove noise, and filtering the conductive material The gain is increased, and the gain of the gain is converted into a digital conductivity signal, and the digital conductivity signal is converted into at least one digit conductivity data.

The purpose, technical contents, features and effects achieved by the present invention will be more readily understood by the detailed description of the embodiments and the accompanying drawings.

10‧‧‧ Conductivity measuring device

12‧‧‧Testing platform

14‧‧‧ Groove

16‧‧‧First electrode

18‧‧‧second electrode

20‧‧‧Detection module

22‧‧‧ Filter

24‧‧ ‧Amplifier

26‧‧‧ Analog Digital Converter

28‧‧‧Microcontroller

30‧‧‧Temperature sensing components

32‧‧‧Data storage

34‧‧‧Warning module

36‧‧‧First light-emitting element

38‧‧‧Second light-emitting element

40‧‧‧ Third light-emitting element

42‧‧‧Switch Module

44‧‧‧First switch

46‧‧‧second switch

48‧‧‧ third switch

50‧‧‧Common sequence bus

T ₁ ‧‧‧First measurement time

T ₂ ‧‧‧Second measurement time

T ₃ ‧‧‧ third measurement time

T ₄ ‧‧‧ fourth measuring time

T _n ‧‧‧Measurement time

T _k ‧‧‧measuring time

D ₁ ‧‧‧first digit conductivity data

D ₂ ‧‧‧second digit conductivity data

D ₃ ‧‧‧ Third digit conductivity data

D ₄ ‧‧‧ fourth digit conductivity data

D _n ‧‧‧Digital conductivity data

D _k ‧‧‧Digital conductivity data

V ₁ ‧‧‧ first starting value

V ₂ ‧‧‧ second starting value

L ₁ ‧‧‧ dotted line

L ₂ ‧‧‧solid line

S10~S62‧‧‧Steps

Figure 1 is a block diagram of a conductance measuring device of the present invention.

Figure 2 is a schematic diagram of the detection platform of the present invention.

Figure 3 is a schematic diagram of the measurement statistics of the present invention.

Figure 4 is a schematic diagram of the statistical chart of the record of the present invention.

Figure 5 is a comparison chart of the measured statistical graph and the recorded statistical graph of the present invention.

Figure 6 is a block diagram of the conductance measuring device of the new warning module of the present invention.

Figure 7 is the new switch module of the present invention and the conductance of the universal serial bus A block diagram of the measuring device.

Figure 8 is a flow chart of the method for measuring conductance of the present invention.

Figure 9 is another flow chart of the conductance measuring method of the present invention.

Figure 10 is still another flow chart of the conductance measuring method of the present invention.

Figure 11 is a flow chart of another embodiment of the conductance measuring method of the present invention.

The invention relates to a conductance measuring device and a measuring method thereof for a skin care product. Generally, when measuring the conductivity of a solution, the conductivity of the solution is measured by measuring the alternating current resistance of the solution between the two electrodes. AC is used to avoid electrolysis. The conductivity of an electrolyte solution is measured by measuring the electrical resistance of a solution between a flat or cylindrical electrode at a distance.

The resistance is measured by an electrical conductivity meter, and the frequency range of the alternating current is generally selected to be 1-3 kHz. The frequency has little effect on the measurement results, but the high frequency alternating current has a significant effect on the results. This phenomenon is called the Debye-Falkenhagen effect.

Since the dissociation of the solution is an endothermic reaction, in general, the temperature rise is favorable for the dissociation of the solution, so that the ion mobility increases, the current increases, and the temperature increases, the rate of movement of the ions increases, and thus the conductivity increases.

For comparison purposes, the reference value is generally chosen to be 298K (25 ° C). Compensation measurements are typically taken at the appropriate temperature and then extrapolated to the reference temperature (typically at 25 ° C). Standard compensation is generally performed by increasing the temperature by 1 degree and increasing the conductivity by 2%.

The distance between the electrodes affects the conductivity of the solution. In accordance with Ohm's law, "the conductivity is inversely proportional to the distance between electricity and distance", that is, the conductivity decreases as the distance between the electrodes increases. This is because the distance increases. Addition affects the migration of ions and the ions may collide with other ions or water molecules during the movement of the ions, thus causing the conductivity to decrease. Therefore, when conducting conductivity measurement, the electrode distance must be fixed to avoid errors.

Further, in Ohm's law, "the conductivity is proportional to the surface area of the electrode." The larger the surface area of the electrode, the better the conductivity, because the amount of ions that can be attached to the surface of the electrode is large. Although the use of alternating current to determine the conductivity of the solution is stable for the test results, there is polarization.

The calculation method of the present invention is as follows: after the original sample is used as a calibration curve, the data of the measurement and the calibration curve are compared for each measurement. 1. Comparing the starting values, if the same substance is measured at the same potential, but the initial current magnitude is different (calculated as the difference percentage), the present invention regards it as deterioration. 2. Cut the curve of the data and the original calibration curve into a number of small segments to calculate the slope. The calculation is divided into two parts: the front and the back.

In the first half, the solution is disturbed by the applied voltage, so the slope will change more drastically. When doing the conductivity measurement, it will try to avoid measuring the solution with a fixed voltage DC, which will cause the above polarization phenomenon to be measured. The current is reduced, but our measurement method is to use the constant voltage electric current to energize the sample, observe the change of the generated current, and calculate the change as the criterion.

In the latter half, as the steady state enters the steady state, the current magnitude does not change much, so the slope change should be small. In the first half, when the relative error of the slopes is greater than 10% (different maintenance products have different judgment values), deterioration occurs. The latter half of the change is not large, when the relative error of the slope is greater than 3% (different skin care products have different judgment values), it is deterioration.

In addition, the measurement is carried out at a temperature of 298 K (25 ° C), if there are different temperatures, Then, after extrapolating to 298K by the above formula, the conductivity is increased by 2% for every 1 °C increase as a calculation standard.

In addition, the present invention has been made clear and fully disclosed, and the technical contents of the present invention can be understood by those skilled in the art to which the invention pertains. The principle of measuring ion concentration is described here: the measurement of conductivity is actually measuring the conductivity of ions in an electrolytic solution, measuring only the concentration of hydrogen ions relative to a pH meter; the measurement of conductivity includes all ions. Because the ions are all conductive, and the degree of conductivity is different due to the type of ions and the degree of dissociation.

The conductivity of a liquid is the movement of ions. The degree of conductivity is related to the following factors: the type and concentration of ions in the solution, the effective area of the electrode face, the distance between the electrodes and the potential difference, and the temperature of the solution.

Therefore, we can judge the deterioration of the skin care products through the measured conductivity, especially when the skin care products are separated by oil and water. This value will have a very significant difference.

The test method of the present invention is summarized as follows: setting the reference conductivity of the skin care product at the time of shipment (and recording the measured temperature at that time), immersing the positive and negative probes in the maintenance liquid, measuring the electrical conductivity, (the temperature ratio is the same as the temperature at the factory) Compensate for the temperature difference and compare it with the factory test value. If there is too much difference, it may deteriorate.

In addition, the conductivity of the solution comes from the movement of ions. When the temperature rises, the viscosity of the medium decreases, the molecular motion increases, the free diffusion becomes faster, and the mobility increases, so the temperature change will inevitably affect its conductivity.

In general, a 1 °C change in solution temperature will result in an error of about 2%. If the standard temperature is 25 ° C and the solution temperature is 30 ° C, the measurement will be about 10% higher.

Based on the above-described concepts and principles, the present invention may be exemplified by a device embodiment for measuring a solution by using a direct current. First, please refer to FIGS. 1 and 2 for a block diagram of the conductance measuring device of the present invention. Detection platform schematic.

The conductance measuring device 10 of the present invention is used for measuring at least one skin care product to be tested. The conductivity measuring device 10 includes a detecting platform 12, and the detecting platform 12 extends downward to form a groove 14. The groove 14 can be provided with a first groove. The electrode 16 and the second electrode 18, wherein the first electrode 16 and the second electrode 18 are at a fixed distance, and then the skin care product can be injected into the groove 14, thereby covering the first electrode 16 and the second electrode 18 .

The detecting module 20 is electrically connected to the first electrode 16 and the second electrode 18. The detecting module 20 can supply a positive voltage to the first electrode 16 and a negative voltage to the second electrode 18, because the tested skin care product is liquid. Therefore, when the first electrode 16 and the second electrode 18 are turned on, the present invention can detect the conductivity of the skin care product to be tested according to a current value.

Then, the filter 22 of the present invention is electrically connected to the detecting module 20 to receive the conductivity to filter the noise, and the amplifier 24 is electrically connected to the filter 22 to receive the filtered conductivity. The conductivity is increased by the filtering, and the analog-to-digital converter 26 is electrically connected to the amplifier 24 to receive the gain of the gain to convert the gain of the gain into a digital conductivity signal, and the microcontroller 28 is electrically connected to the analog digital conversion. The device 26 receives the digital conductivity signal to convert the digital conductivity signal into at least one digit conductivity data.

As described above, the conductance measuring device 10 of the present invention further includes a temperature sensing component 30 electrically connected to the microcontroller 28, the temperature sensing component 30 can detect the ambient temperature value, and the microcontroller 28 receives the ambient temperature value. The ambient temperature value can be converted into at least one digit ambient temperature data, and the data storage 32 is electrically connected to the microcontroller 28, and the microcontroller 28 can convert the digital conductivity data. The digital ambient temperature data is stored in the data storage 32.

In the drawings, the description and drawings clearly and fully disclose the invention. Therefore, in the above embodiments and drawings, only at least one of the tested skin care products is taken as an example, and the tested and maintained according to the present invention. When the quantity of the product is two, each can be the original skin care product and the test skin care product. The original skin care product is, for example, the same bottle of skin care product. After a period of use, the bottle skin care product becomes the test skin care product, or is more The bottle is the same as the skin care products on the production day, one of which is the original care product, and the other bottle is the test and maintenance product.

The digital conductivity data of the original skin care products can be respectively expressed as the first digit conductivity data and the second digit conductivity data, and the digital environmental temperature data of the original skin care product is the first digit ambient temperature data, and the digital conductivity of the skin care product is tested. The data can be expressed as the third digit conductivity data and the fourth digit conductivity data respectively, and the digital environmental temperature data of the test and maintenance products is the second digit ambient temperature data.

Then, the microcontroller 28 can generate measurement data according to the first digital conductivity data and the second digital conductivity data, and generate the record data according to the third digital conductivity data and the fourth digital conductivity data.

After the microcontroller 28 compares the first digital ambient temperature data and the second digital ambient temperature data, if the first digital ambient temperature data and the second digital ambient temperature data have differences, the microcontroller 28 compensates the recorded data.

In addition, for better detailed description, please refer to FIG. 3, FIG. 4 and FIG. 5, which illustrate the schematic diagram of the measurement statistical graph and the statistical diagram of the record and the comparison of the measurement statistical graph and the record statistical graph. . As shown in the figure, the horizontal axis is time sorted, the unit can be seconds, and the vertical axis is the current value in amps.

As shown in FIG. 3, the microcontroller 28 of the present invention can sequentially measure the measurement data such as the first measurement time T ₁ and the second measurement time T ₂ and the first digital conductivity data D ₁ and two digital data D ₂ to the electric conductivity of the corresponding generated statistic to measure the pattern. Next, as shown in FIG. 4, the record data is sequentially measured by a measurement time such as a third measurement time T ₃ and a fourth measurement time T ₄ and a third digital conductivity data D ₃ and a fourth digital conductivity data D _{4 .} Corresponding to generate a statistical graph of records.

In addition, as described above, the present invention is a first measurement time T ₁ , a second measurement time T ₂ , a first digital conductivity data D ₁ , a second digital conductivity data D ₂ , and a third The measurement time T ₃ , the fourth measurement time T ₄ , the third digital conductivity data D ₃ and the fourth digital conductivity data D _{4 are taken} as a label description, and the difference in the sign does not affect the technical idea of the present invention. .

Further, and as shown in FIG. 3, according to an increase of the measurement time, the measurement data of the measuring time and the conductivity of the signed digit data can be marked continues measuring time T _n corresponding digital data D _n to the conductivity of the amount of generated Measure statistical graphs.

Similarly, as shown in FIG. 4, according to increase measurement time, the measurement time log data and the signed digit conductivity material designation may measuring time T _k continues to correspond to digital conductivity data D _k to generate a record statistical pattern .

As shown in FIG. 5, wherein the measurement statistical graph is a broken line L ₁ and the recorded statistical graph is a solid line L ₂ , the microcontroller 28 generates a first starting value V ₁ and a first slope value m according to the measurement statistical graph L _{1 . k} , and generating a second starting value V ₂ and a second slope value m _k ' according to the statistical chart.

其中A係為起始判定值，V ₁係為第一起始值，V ₂係為第二起始值。 Continuing from the foregoing, the microcontroller 28 of the present invention can begin to compare the first starting value V ₁ with the second starting value V _{2 to} generate a starting determination value. When the initial determination value is less than 10%, the microcontroller 28 determines that the test and maintenance product is in a normal state; when the initial determination value is equal to 10%, the microcontroller 28 determines that the test and maintenance product is in a state of attention; the initial determination value is greater than 10%. At the time, the microcontroller 28 determines that the test and maintenance product is in an abnormal state, wherein the relationship of the initial determination values is:

Wherein A is the initial determination value, V ₁ is the first starting value, and V ₂ is the second starting value.

Then, the microcontroller 28 compares the first slope value m _k and the second slope value m _k ' according to the measurement statistical pattern L ₁ and the recorded statistical pattern L ₂ to generate a slope determination value E _R .

The relationship between the first slope value m _k and the second slope value m _k ' is:

其中m _k 係為第一斜率值，m _k '係為第二斜率值，x ₁係為第一測量時間，x ₂係為第二測量時間，x ₃係為第三測量時間，x ₄係為第四測量時間，y ₁係為第一數位導電度資料，y ₂係為第二數位導電度資料，y ₃係為第三數位導電度資料，y ₄係為第四數位導電度資料。

Where m _k is the first slope value, m _k ' is the second slope value, x ₁ is the first measurement time, x ₂ is the second measurement time, x ₃ is the third measurement time, x ₄ is For the fourth measurement time, y ₁ is the first digit conductivity data, y ₂ is the second digit conductivity data, y ₃ is the third digit conductivity data, and y ₄ is the fourth digit conductivity data.

其中E _R 係斜率判定值，m _k 係為第一斜率值，m _k '係為第二斜率值。 When the slope determination value is less than 3%, the microcontroller 28 determines that the test and maintenance product is in a normal state; when the slope determination value is equal to 3%, the microcontroller 28 determines that the test and maintenance product is in a state of attention; when the slope determination value is greater than 3%, the micro-controller The controller 28 determines that the test and maintenance product is in an abnormal state, and the relationship between the slope determination values is:

Where E _R is the slope determination value, m _k is the first slope value, and m _k ' is the second slope value.

For the continuation, refer to FIG. 6 for a block diagram of the conductance measuring device of the added warning module of the present invention. The conductance measuring device 10 of the present invention may include the warning module 34 electrically connected to the micro control. The controller 28 can send a warning signal, and the warning module 34 receives the warning signal to make a warning.

The warning module 34 further includes a first light-emitting component 36 electrically connected to the microcontroller 28. When the test and maintenance product is in a normal state, the microcontroller 28 sends a warning signal to cause the first light-emitting component 36 to be alerted; the second light-emitting component 38 is electrically The microcontroller 28 is connected to the microcontroller 28, and when the test product is in the attention state, the microcontroller 28 sends an alarm signal to alert the second illuminating component 38; the third illuminating component 40 is electrically connected to the microcontroller 28 when the test product is in an abnormal state. The controller 28 sends an alarm signal to cause the third lighting element 40 to alert.

Referring to FIG. 7 , a block diagram of a conductance measuring device for a new switch module and a universal serial bus is described. Referring to FIG. 1 at the same time, the conductance measuring device 10 of the present invention further includes a switch module 42 electrically connected. The controller 28 controls the microcontroller 28 to classify and archive the measurement data of the original skin care product and the record data of the test skin care product, and the switch module 42 can control whether the microcontroller 28 compensates the record data and determines whether to supply power. To the microcontroller 28.

The switch module 42 further includes a first switch 44 electrically connected to the microcontroller 28 to determine whether to supply power to the microcontroller 28, and the second switch 46 is electrically connected to the microcontroller 28 to control the microcontroller 28. Switching to the measurement mode or the recording mode, the third switch 48 is electrically connected to the microcontroller 28 to control the microcontroller 28 to classify and archive the measurement data of the original skin care product and the record data of the test skin care product.

In addition, the conductance measuring device 10 of the present invention further includes a universal serial bus bar 50 electrically connected to the first switch 44 to supply power to the first switch 44.

In accordance with the conductivity measuring device described above, the present invention may further cite a method embodiment. Please refer to FIG. 8 , FIG. 9 , FIG. 10 and FIG. 11 together to illustrate the electrical conductivity measurement of the present invention. A flow chart of the conductance measurement method of the method flow chart, another flow chart, still another flow chart, and still another flow chart.

As shown in the figure, the technical idea of the present invention is to determine a conductivity measurement method for measuring at least one condition to be tested. The conductance measurement method includes the following steps. As shown in step S10, detecting a measured value according to a current value. One conductivity of the skin care product, in step S12, the conductivity is filtered out of noise, as shown in step S14, the filtered conductivity is increased by the gain, and then, as in step S16, the gain of the gain is converted into a digital position. The conductivity signal, and then, in step S18, converts the digital conductivity signal into at least one digit conductivity data.

After step S18, the method further includes: step S20, detecting an ambient temperature value, and converting the ambient temperature value into at least one digit ambient temperature data, and then, as shown in step S22, digitizing the conductivity data and the digital ambient temperature data. Carry out data storage.

As described above, the conductivity measurement method, when the quantity of the skin care products to be tested is two, is the original skin care product and the test skin care product, and the digital conductivity data of the original skin care product can be respectively expressed as the first digital conductivity data. And the second digit conductivity data, the digital environmental temperature data of the original skin care product is the first digit ambient temperature data, and the digital conductivity data of the test and maintenance product can be respectively represented as the third digit conductivity data and the fourth digit conductivity data. The digital ambient temperature data of the test and maintenance products is the second digit ambient temperature data.

Continuing to refer to FIG. 8 and FIG. 9 , the method for measuring conductance of the present invention includes the following steps after step S22, such as step S24, generating measurement data according to the first digital conductivity data and the second digital conductivity data, In step S26, the record data is generated based on the third digit conductivity data and the fourth digit conductivity data.

After step S26, step S28 is performed to determine the first digital environment temperature Whether there is a difference between the material and the second digit ambient temperature data, if yes, the compensation start determination value and the slope determination value are performed in step S30, and if not, the compensation start determination value and the slope determination value are not performed, and the process proceeds directly to the next step.

For the continuation, refer to FIG. 9 and FIG. 10, and refer to FIG. 3, FIG. 4 and FIG. 5 at the same time, as described above for the conductance measurement method. After step S26, step S32 is performed to measure the data according to the first method. The measurement time T ₁ and the second measurement time T ₂ and the first digital conductivity data D ₁ and the second digital conductivity data D _{2 respectively} generate a measurement statistical pattern, and then proceed to step S34 to record the data according to the third measurement. The time T ₃ and the fourth measurement time T ₄ and the third digital conductivity data D ₃ and the fourth digital conductivity data D _{4 respectively} generate a record statistical graph.

After step S34, the method further includes the following steps. Step S36, generating a first starting value V ₁ and a first slope value m _k according to the measurement statistical pattern, and generating a second starting value V ₂ and the second according to the recorded statistical pattern. The slope value m _k ', in step S38, comparing the first starting value V ₁ and the second starting value V _{2 to} generate a starting determination value, comparing the first slope value m _k and the second slope value m _k ' to generate a slope determination value .

The relationship between the first slope value and the second slope value is:

其中m _k 係為第一斜率值，m _k '係為第二斜率值，x ₁係為第一測量時間，x ₂係為第一測量時間，x ₃係為第三測量時間，x ₄係為第一測量時間，y ₁係為第一數位導電度資料，y ₂係為第一數位導電度資料，y ₃係為第一數位導電度資料，y ₄係為第一數位導電度資料。

Where m _k is the first slope value, m _k ' is the second slope value, x ₁ is the first measurement time, x ₂ is the first measurement time, x ₃ is the third measurement time, x ₄ is the For the first measurement time, y ₁ is the first digit conductivity data, y ₂ is the first digit conductivity data, y ₃ is the first digit conductivity data, and y ₄ is the first digit conductivity data.

Then, after step 38, the following steps are further included. In step S40, it is determined whether the initial determination value is less than 10%. If yes, step S42 is performed to determine that the test and maintenance product is in a normal state. If not, proceed to step S44 to determine Whether the initial determination value is equal to 10%, and if so, the process proceeds to step S46, and the test and maintenance product is determined to be in a state of attention. If not, the process proceeds to step S48, and it is determined whether the initial determination value is greater than 10%. If yes, step S50 is performed to determine the test and maintenance product. If it is an abnormal state, if not, the process returns to step S40 to determine whether the initial determination value is less than 10%.

其中A係為起始判定值，V ₁係為第一起始值，V ₂係為第二起始值。 The relationship between the initial decision values is:

Wherein A is the initial determination value, V ₁ is the first starting value, and V ₂ is the second starting value.

As described above, the conductance measuring method of the present invention further includes the following steps after step 38, such as step S52, determining whether the slope determination value is less than 3%, and if so, performing step S54 to determine that the test and maintenance product is in a normal state, If not, proceed to step S56 to determine whether the slope determination value is equal to 3%. If yes, proceed to step S58 to determine that the test and maintenance product is in the attention state. If not, proceed to step S60 to determine whether the slope determination value is greater than 3%, and if so, perform the steps. In S62, it is determined that the test and maintenance product is in an abnormal state. If not, the process returns to step S52 to determine whether the slope determination value is less than 3%.

其中E _R 係為斜率判定值，m _k 係為第一斜率值，m _k '係為第二斜率值。 The relationship between the slope determination values is:

Where E _R is the slope determination value, m _k is the first slope value, and m _k ' is the second slope value.

In summary, the present invention discloses a conductance measuring device and a measuring method thereof for measuring at least one skin care product to be tested, and a current value can be used to detect the conductivity of the skin care product to be tested according to the current value. The initial judgment value and the slope determination value can obtain a precise measurement knot As a result, compared with the way in which the pH value is measured by the pH value in the past, the measurement value error can be avoided, and the cumbersome calibration procedure and cost can be avoided.

The foregoing embodiments and examples of the present invention are disclosed above, but are not intended to limit the present invention. Modifications and modifications made without departing from the spirit and scope of the invention are claimed in the scope of the invention. Please refer to the attached request for the scope of patents defined by the present invention.

S10~S18‧‧‧Steps

Claims (19)

A conductance measuring device for measuring at least one tested skin care product, the conductance measuring device comprising: a detecting platform, the detecting platform extending downward to form a groove, wherein the groove is provided with a first electrode and a second electrode, The detection device is injected into the recess to cover the first electrode and the second electrode; a detection module electrically connected to the first electrode and the second electrode, and the detection module Providing a positive voltage to the first electrode and a negative voltage to the second electrode, and when the first electrode and the second electrode are turned on, detecting a conductivity of the one of the tested skin care products according to a current value; a filter electrically connected to the detecting module to receive the conductivity to filter noise of the conductivity; an amplifier electrically connected to the filter to receive the filtered conductivity to filter In addition to the conductivity enhancement gain; an analog-to-digital converter electrically connected to the amplifier receives the gain of the gain to convert the gain to a digital conductivity signal; a microcontroller, electrical Connect the analog to digital converter The digital conductivity signal is converted into at least one digit conductivity data by the digital conductivity signal; a temperature sensing component is electrically connected to the microcontroller, and the temperature sensing component can detect an ambient temperature value, and The microcontroller receives the ambient temperature value, and converts the ambient temperature value into at least one digit ambient temperature data; and a data storage device electrically connected to the microcontroller, the microcontroller can determine the digital conductivity data And the digital ambient temperature data is stored in the data storage. The conductance measuring device according to claim 1, wherein the quantity of the tested skin care product is At 2 o'clock, respectively, the original skin care product and a test skin care product, and the digital conductivity data of the original skin care product is a first digit conductivity data and a second digit conductivity data, the original skin care product The digital ambient temperature data is a first digital ambient temperature data, and the digital electrical conductivity data of the test and maintenance product is a third digital electrical conductivity data and a fourth digital electrical conductivity data, and the digital environment of the test and maintenance product The temperature data is a second digit ambient temperature data, and the microcontroller can generate a measurement data according to the first digital conductivity data and the second digital conductivity data, and according to the third digital conductivity data and the The fourth digit conductivity data produces a record data. The conductance measuring device of claim 2, wherein the microcontroller compares the first digital ambient temperature data and the second digital ambient temperature data, the first digital ambient temperature data and the second digital environment The microcontroller compensates for the log data when there is a difference in temperature data. The conductance measuring device according to claim 3, wherein the microcontroller can determine the measured data according to a first measurement time and a second measurement time, and the first digital conductivity data and the second The digital conductivity data correspondingly generates a measurement statistical pattern, and the record data is generated according to a third measurement time and a fourth measurement time, and the third digital conductivity data and the fourth digital conductivity data are correspondingly generated. Record statistical figures. The conductivity measuring device of claim 4, wherein the microcontroller generates a first starting value and a first slope value according to the measurement statistical pattern, and generates a second based on the statistical pattern of the record. a start value and a second slope value, and the microcontroller can compare the first start value and the second start value to generate a start determination value and compare the first slope value and the second slope value to generate a slope determination a value, wherein the relationship between the first slope value and the second slope value is: Where m _k is the first slope value, m _k ' is the second slope value, x ₁ is the first measurement time, x ₂ is the second measurement time, and x ₃ is the third measurement Time, x ₄ is the fourth measurement time, y ₁ is the first digit conductivity data, y ₂ is the second digit conductivity data, y ₃ is the third digit conductivity data, y ₄ It is the fourth digit conductivity data. The conductance measuring device according to claim 5, wherein when the initial determination value is less than 10%, the microcontroller determines that the test and maintenance product is in a normal state; when the initial determination value is equal to 10%, the micro control The device determines that the test and maintenance product is in a state of attention; when the initial determination value is greater than 10%, the microcontroller determines that the test and maintenance product is in an abnormal state, and the relationship between the initial determination value is: Where A is the initial determination value, V ₁ is the first starting value, and V ₂ is the second starting value. The conductance measuring device according to claim 5, wherein when the slope determination value is less than 3%, the microcontroller determines that the test and maintenance product is in a normal state; when the slope determination value is equal to 3%, the microcontroller The test and maintenance product is determined to be in a state of attention; when the slope determination value is greater than 3%, the microcontroller determines that the test and maintenance product is in an abnormal state, and the relationship between the slope determination values is: Where E _R is the slope determination value, m _k is the first slope value, and m _k ' is the second slope value. The conductivity measuring device according to claim 6 or claim 7, further comprising: A warning module is electrically connected to the microcontroller, and the microcontroller can send an alarm signal, and the warning module receives the warning signal to make a warning. The conductance measuring device of claim 8, wherein the warning module further comprises: a first light-emitting component electrically connected to the microcontroller, and when the test and maintenance product is in a normal state, the microcontroller sends The warning signal causes the first light-emitting element to be alerted; a second light-emitting element is electrically connected to the microcontroller, and when the test and maintenance product is in a state of attention, the microcontroller sends the warning signal to cause the second light-emitting element to be alerted; And a third light-emitting component electrically connected to the microcontroller. When the test and maintenance product is in an abnormal state, the microcontroller sends the warning signal to cause the third light-emitting component to alert. The conductance measuring device according to claim 3, further comprising: a switch module electrically connected to the microcontroller to control the micro-controller to measure the original maintenance product and the test and maintenance The record data of the product is classified and archived, and the switch module can control whether the microcontroller compensates the record data and determines whether to supply a power to the microcontroller. The conductance measuring device of claim 10, wherein the switch module further comprises: a first switch electrically connected to the microcontroller to determine whether to supply the power to the microcontroller; a switch electrically connected to the microcontroller to control the microcontroller to switch to a measurement mode or a recording mode; and a third switch electrically connected to the microcontroller to control the microcontroller to the original The measurement data of the skin care product and the record information of the test skin care product are classified and archived. A conductance measuring method for determining at least one skin care product to be tested, the conductivity measuring method comprising Step of: detecting a conductivity of the measured skin care product according to a current value; filtering the conductivity to remove noise; increasing the filtered conductivity to increase the gain; converting the gain of the gain into a digit a conductivity signal; converting the digital conductivity signal into at least one digit conductivity data; detecting an ambient temperature value, and converting the ambient temperature value into at least one digit ambient temperature data; and the digital conductivity data and the Digital ambient temperature data for data storage. The method of measuring conductance according to claim 12, wherein the quantity of the tested skin care product is two, which is an original skin care product and a test skin care product, and the digital conductivity data of the original skin care product. The first digital electrical conductivity data and the second digital electrical conductivity data, wherein the digital environmental temperature data of the original skin care product is a first digital ambient temperature data, and the digital electrical conductivity data of the test skin care product is respectively The third digit conductivity data and a fourth digit conductivity data, the digital ambient temperature data of the test skin care product is a second digit ambient temperature data. The method for measuring conductance according to claim 13 is characterized in that after the digital conductivity data and the digital ambient temperature data are subjected to a data storage step, the method further comprises the following steps: according to the first digital conductivity data and the second The digital conductivity data generates a measurement data; and a record data is generated according to the third digital conductivity data and the fourth digital conductivity data. The conductivity measurement method according to claim 14 of the patent application, according to the third digital conductivity After the data and the fourth digit conductivity data generate a record data step, the method further includes the following steps: determining whether the first digital ambient temperature data and the second digital ambient temperature data are different, and if so, performing compensation on the initial determination value And the slope determination value, if not, the initial determination value and the slope determination value are not compensated. The method for measuring conductance according to claim 15 is characterized in that after the step of generating a record data according to the third digit conductivity data and the fourth digit conductivity data, the method further comprises the following steps: Corresponding to the first measurement time and a second measurement time and the first digital conductivity data and the second digital conductivity data to generate a measurement statistical graph; and the recording data according to a third measurement time and a fourth The measurement time and the third digit conductivity data and the fourth digit conductivity data correspondingly generate a record statistical graph. The method for measuring conductance according to claim 16 is characterized in that the record data is generated according to a third measurement time and a fourth measurement time, and the third digital conductivity data and the fourth digital conductivity data are generated. After the step of recording the statistical graph, the method further includes the following steps: generating a first starting value and a first slope value according to the measurement statistical pattern; generating a second starting value and a second slope value according to the recording statistical pattern; Comparing the first start value and the second start value to generate a start determination value; and comparing the first slope value and the second slope value to generate a slope determination value, wherein the first slope value and the second slope value The relationship is: Where m _k is the first slope value, m _k ' is the second slope value, x ₁ is the first measurement time, x ₂ is the first measurement time, and x ₃ is the third measurement Time, x ₄ is the first measurement time, y ₁ is the first digit conductivity data, y ₂ is the first digit conductivity data, and y ₃ is the first digit conductivity data, y ₄ The first digit conductivity data is used. The method for measuring conductance according to claim 17, after the step of comparing the first slope value and the second slope value to generate a slope determination value, further comprising the step of: determining whether the initial determination value is less than 10% If yes, determine that the test and maintenance product is in a normal state, and if not, determine whether the initial determination value is equal to 10%, if yes, determine that the test and maintenance product is in a state of attention, and if not, determine whether the initial determination value is greater than 10 %, if yes, it is determined that the test and maintenance product is in an abnormal state, and if not, the step returns to determine whether the initial determination value is less than 10%, wherein the relationship of the initial determination value is: Where A is the initial determination value, V ₁ is the first starting value, and V ₂ is the second starting value. The method for measuring conductance according to claim 17, after the step of comparing the first slope value and the second slope value to generate a slope determination value, further comprising the steps of: determining whether the slope determination value is less than 3%, If yes, determining that the test and maintenance product is in a normal state; if not, determining whether the slope determination value is equal to 3%, and if so, determining that the test and maintenance product is in a state of attention, and if not, determining whether the slope determination value is greater than 3%, and if so, It is determined that the test and maintenance product is in an abnormal state, and if not, the step returns to determine whether the slope determination value is less than 3%, wherein the relationship between the slope determination values is: Where E _R is the slope determination value, m _k is the first slope value, and m _k ' is the second slope value.