TWI551858B - Method for measuring the conductivity of conductor oxidation - Google Patents

Description

Conductivity measurement method for mitigating conductor oxidation

The invention provides a conductivity measuring method for mitigating the oxidation of a conductor, in particular to a water quality sensor applied to the internal washing space of the washing appliance, and changing the potential of the first conductor and the second conductor through the control unit during use, For mitigating the oxidation phenomenon of the first conductor and the second conductor at a high potential due to polarization.

According to the development of modern science and technology, many home appliances that provide people with comfortable and convenient life come out, so that people can quickly deal with the time-consuming and energetic work in the past through different home appliances. Among them, in general household electrical appliances, there are some washing appliances that need to be connected to a water source, such as a washing machine, a dishwasher, etc., which use a liquid water to mix with a cleaning liquid, a detergent, etc., thereby reducing the cost of manual washing. A lot of time.

A general washing appliance (such as a washing machine or a dishwasher) is provided with a water quality sensor in the internal washing space. The water sensor is internally provided with a control unit, and the control unit is electrically connected to expose the liquid to the liquid. Two of the conductors. In practical application, one electrode is set to a high potential through the control unit and the other conductor is set to a low potential, so that the current of one conductor is transmitted from the water in the washing space to the other conductor for the control unit to measure the water liquid. Conductivity. Among them, the conductivity of electrons in water under normal conditions approaches a fixed value, if there are other ions in the water (such as laundry detergent or dissolved detergent, etc. ), which affects the conduction rate of electrons in the liquid, so the control unit can compare the conductivity detected in the water with the aforementioned fixed value to determine whether the water in the washing space is not originally The ions present, and then the cleanness of the water solution is determined to determine whether to continue the washing operation.

However, when the control unit measures the conductivity in the aqueous solution by single-phase energization between the two conductors, single-phase energization will cause polarization of the two conductors, that is, the high-potential conductor is oxidized due to loss of electrons. Oxidation, a low-potential conductor produces a reduction due to electrons, and causes a high-potential conductor to rust under a long-term energization, thereby affecting the strength of the high-potential conductor output current, and causing the control unit to The wrong conductivity of the water is measured between the two conductors, and it is not possible for the washing appliance to accurately determine the cleanliness of the water in the washing space to determine whether to continue the washing operation.

Therefore, how to solve the problem that the two conductors measure the wrong conductivity in the water liquid due to the single-phase energization, that is, the direction that the relevant manufacturers engaged in this industry want to study and improve.

Therefore, in view of the above-mentioned deficiencies, the inventors have collected relevant information, and through multiple assessments and considerations, and through years of experience in the industry, through continuous trial and modification, we have designed this kind of change through the control unit. The potential of the conductor and the second conductor to slow down the oxidation of the conductor caused by the oxidation of the first conductor and the second conductor at a high potential due to polarization.

The main purpose of the invention is to control the unit inside the water quality sensor The phase changes the potential of the first conductor and the second conductor, thereby slowing the oxidation phenomenon of the first conductor and the second conductor at a high potential due to polarization, so as to prevent excessive corrosion of the first conductor and the second conductor The influence of the output current is strong, and the control unit can accurately measure the conductivity of the water liquid between the first conductor and the second conductor, thereby enabling the washing appliance to accurately determine the cleanness of the water in the washing space to determine whether to continue washing. operation.

A secondary object of the present invention is to change the potential of the first conductor and the second conductor through the control unit to prevent excessive rust of the first conductor and the second conductor, thereby improving the service life of the water quality sensor.

1‧‧‧Water quality sensor

11‧‧‧Control unit

111‧‧‧Microcontroller

112‧‧‧Drive circuit

12‧‧‧First conductor

13‧‧‧Second conductor

The first figure is a stereoscopic appearance of the water quality sensor of the present invention.

The second figure is a schematic circuit diagram of the water quality sensor of the present invention.

The third figure is a flow chart of the steps of the present invention.

In order to achieve the above objects and effects, the technical means and the configuration of the present invention will be described in detail with reference to the preferred embodiments of the present invention.

Please refer to the first and second figures, which are schematic diagrams of the water quality sensor of the present invention and the circuit diagram of the water quality sensor. As can be clearly seen from the figure, the water quality sensor 1 of the present invention is The control unit 11 is disposed inside, and the water quality sensor 1 is externally provided with a first conductor 12 and a second conductor 13 electrically connected to the control unit 11. The control unit 11 includes a microcontroller 111 and a driving circuit 112, and the microcontroller 111 is electrically connected. The driving circuit 112 is electrically connected to the first conductor 12 and the second conductor 13.

Referring to the third embodiment, which is a flow chart of the steps of the present invention, it can be clearly seen from the figure that the flow chart of the method for measuring the conductivity of the conductor to oxidize the conductor is as follows:

(200) The water quality sensor 1 is turned on.

(201) The control unit 11 sets the first conductor 12 to a high potential and the second conductor 13 to a low potential.

(202) The control unit 11 measures the conductivity of the water between the first conductor 12 and the second conductor 13 during the detection time.

(203) The control unit 11 sets the first conductor 12 to be low and the second conductor 13 to be high.

(204) The control unit 11 measures the conductivity of the water between the first conductor 12 and the second conductor 13 during the detection time.

(205) The control unit 11 sets the first conductor 12 to be low and the second conductor 13 to be low.

(206) The water quality sensor 1 is turned off and returns to step (200) after a set time.

In detail, in the above process, the method for measuring the conductivity of the conductor oxidizing is slowed down by the above steps to measure the oxidation phenomenon of the first conductor and the second conductor, and the conductivity of the water liquid is measured, wherein the water The sensor 1 is assembled in a washing appliance (such as a washing machine or a dishwasher) so that the first conductor 12 and the second conductor 13 are exposed to the washing space inside the washing appliance. When the washing space inside the washing appliance is used for the washing operation, the water is started. The sensor 1 and the microcontroller 111 of the control unit 11 first transmit a control signal to the driving circuit 112 for the driving circuit 112 to set the first conductor 12 to a high potential and the second conductor 13 to a low potential. The state continues for a detection time such that the current output by the drive circuit 112 at the first conductor 12 is transferred from the water in the wash space to the second conductor 13. During the detection time, the microcontroller 111 transmits a sensing signal to the driving circuit 112 for measuring the conductivity of the water between the first conductor 12 and the second conductor 13 by the driving circuit 112.

The driving circuit 112 of the control unit 11 is used for performing any signal processing operation such as amplifying, dividing or filtering the control signal and the sensing signal, and thus is not limited to the patent scope of the present invention, such as using other modifications and equivalent structural changes. All should be included in the scope of the patent of the present invention and combined with Chen Ming.

After the detection time has elapsed, the microcontroller 111 of the control unit 11 transmits a control signal to the driving circuit 112 for the driving circuit 112 to set the first conductor 12 to a low potential and the second conductor 13 to a high potential. This state continues for a detection time, thereby changing the direction of current flow between the first conductor 12 and the second conductor 13, that is, the driving circuit 112 is connected to the second conductor 13 to output current, and the current is transmitted by the liquid and liquid in the washing space. To the first conductor 12. During the subsequent detection time, the microcontroller 111 transmits a sensing signal to the driving circuit 112 for measuring the conductivity of the water between the first conductor 12 and the second conductor 13 by the driving circuit 112.

After the detection time elapses, the microcontroller 111 of the control unit 11 transmits a control signal to the driving circuit 112, so that the driving circuit 112 sets the first conductor 12 and the second conductor 13 to a low potential, thereby stopping at the first a conductor 12 and a second conductor 13 Power is applied between and the water quality sensor 1 is turned off. Further, after the water quality sensor 1 is turned off for a set time, the above operation flow is repeated, and the set time may be any time corresponding to the washing operation in the washing appliance.

The detection time may be three to thirty seconds or any time during the washing operation in the washing appliance, and only the control unit 11 needs to measure the water through the first conductor 12 and the second conductor 13 during the detecting time. The conductivity of the liquid may be, and is not limited to, the scope of the patent of the present invention, and other modifications and equivalent structural changes are included in the scope of the patent of the present invention.

The conductivity measuring method for mitigating the oxidation of the conductor is based on the conductivity of the water quality sensor 1 when measuring the conductivity of the water, and the potential of the first conductor 12 and the second conductor 13 is changed by the control unit 11 to slow down. The oxidation of the first conductor 12 and the second conductor 13 at a high potential due to polarization, thereby preventing the first conductor 12 and the second conductor 13 from being excessively corroded and affecting the strength of the output current The control unit 11 can accurately measure the conductivity of the water liquid between the first conductor 12 and the second conductor 13 for the washing appliance to accurately determine the state of the water in the washing space to decide whether to continue the washing operation.

Further, the method for measuring the conductivity of the conductor to oxidize the conductor changes the potential of the first conductor 12 and the second conductor 13 through the control unit 11 to slow down the generation of the first conductor 12 and the second conductor 13 at a high potential. The oxidation phenomenon prevents the first conductor 12 and the second conductor 13 from being excessively rusted to improve the service life of the water quality sensor 1.

The above-described conductivity measuring method for mitigating conductor oxidation of the present invention can have the following advantages in practical use, such as:

(1) The present invention changes the potentials of the first conductor 12 and the second conductor 13 by the phase of the control unit 11, thereby mitigating the oxidation phenomenon of the first conductor 12 and the second conductor 13 at a high potential, so that the control The unit 11 can accurately measure the conductivity of the water liquid between the first conductor 12 and the second conductor 13.

(2) The present invention changes the potentials of the first conductor 12 and the second conductor 13 by the control unit 11 to prevent the first conductor 12 and the second conductor 13 from being excessively rusted, thereby improving the use of the water quality sensor 1. life.

Therefore, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the patent of the present invention. The present invention is directed to a method for measuring conductivity of a conductor to reduce oxidation of a conductor, which is detected by the control unit 11. The phase changes the potentials of the first conductor 12 and the second conductor 13 in time to slow down the oxidation phenomenon of the first conductor 12 and the second conductor 13 at a high potential due to polarization, so that the foregoing effects can be achieved. The structure and the device are all covered by the present invention, and such simple modifications and equivalent structural changes are all included in the scope of the patent of the present invention and are combined with Chen Ming.

In summary, the above-mentioned method for measuring the conductivity of the oxidized conductor is effective in achieving the effect and purpose when used. Therefore, the present invention is an application of excellent practicality and is in accordance with the application requirements of the invention patent.提出 Submit an application in accordance with the law, and I hope that the trial committee will grant this case as soon as possible to protect the inventor's hard work. If there is any doubt in the trial committee, please do not hesitate to give instructions, the inventor will try his best to cooperate, and feel really good.

1‧‧‧Water quality sensor

11‧‧‧Control unit

111‧‧‧Microcontroller

112‧‧‧Drive circuit

12‧‧‧First conductor

13‧‧‧Second conductor

Claims (6)

A method for measuring conductivity of a conductor to reduce oxidation of a conductor, the method being applied to a water quality sensor for presetting a washing space inside a washing appliance, wherein the water sensor is internally provided with a control unit, and the control unit is electrically connected The first conductor and the second conductor contacting the water liquid in the washing space, the steps comprising: (A01) the water quality sensor is turned on; (A02) the control unit sets the first conductor to be a high potential and the second conductor to be a low potential; (A03) The control unit measures the conductivity of the water between the first conductor and the second conductor during the detection time; (A04) the control unit sets the first conductor to be low and the second conductor to be high; (A05) control The unit measures the conductivity of the water between the first conductor and the second conductor during the detection time; (A06) the control unit sets the first conductor to be low and the second conductor to be low; (A07) the water sensor is turned off Wherein, the method slows the oxidation phenomenon of the first conductor and the second conductor through the above steps, and measures the conductivity of the water liquid. The method for measuring conductivity of oxidizing conductors as described in claim 1, wherein the detection time is three to thirty seconds. The method for measuring the conductivity of the oxidized conductor oxidizing according to claim 1, wherein in the step (A07), the water quality sensor is returned to the step (A01) after being turned off to a set time. The method for measuring the conductivity of the conductor oxidizing as described in claim 1 of the patent application, wherein The control unit of the water quality sensor has a microcontroller, and the microcontroller is electrically connected to the driving circuit, and the first conductor and the second conductor are electrically connected to the driving circuit. The method for measuring conductivity of a mitigating conductor oxidation according to claim 4, wherein the microcontroller is configured to transmit a control signal to the driving circuit for changing the first conductor and the second conductor by the driving circuit. Potential. The method for measuring the conductivity of a mitigating conductor oxidation according to claim 4, wherein the microcontroller is configured to transmit a sensing signal to the driving circuit for measuring the first conductor and the second by the driving circuit. Conductivity of the conductor.