WO2019001290A1 - Detergent type detection method, detergent dosage control method and washing machine - Google Patents

Abstract

The invention discloses a detergent type detecting method, a detergent dosage control method and a washing machine, which comprise: determining N conductivity intervals for N types of detergents; conducting conductivity detection on unknown concentration detergents, and detecting The conductivity obtained is denoted by d; the conductivity interval into which the conductivity d falls is determined; the type of the detergent of the unknown concentration is identified based on the conductivity interval into which the conductivity d falls. The invention utilizes conductivity to identify the type of detergent, and according to the type of detergent combined with the weight of the laundry, the meter can directly determine the amount of detergent, not only achieves accurate control of the amount of detergent, but also does not need to be based on Conductivity converts the concentration of the detergent, so the control process is more concise and the execution speed is faster. Moreover, the washing machine designed by the detergent dosage control method of the present invention does not need to be diluted with the detergent, and can simplify the structural design and improve the production efficiency.

Description

Detergent type detecting method, detergent dosage control method and washing machine

Cross-reference to related applications

This application claims the priority of the Chinese patent application filed on June 30, 2017, the Chinese Patent Office, Application No. 201710525484.5, entitled "A Detergent Type Detection Method, Detergent Usage Control Method, and Washing Machine", all of which The content is incorporated herein by reference.

Technical field

The present invention relates to the field of washing equipment, and in particular to a method for detecting a type of detergent and a detergent amount control method and a washing machine designed based on the detecting method.

Background technique

The washing machine is a special cleaning device for washing clothes, cotton, linen, chemical fiber and other textiles. The current washing machine, whether it is a fully automatic washing machine or a semi-automatic washing machine, basically has the basic functions of washing, rinsing and dehydrating. To a certain extent, it has reduced people's labor intensity and comforted people's lives. Moreover, with the development of society, the gradual improvement of people's quality of life requirements and the continuous improvement of the expectations of smart products, washing machines are also rapidly developing towards the direction of intelligence.

At present, smart washing machines are mainly equipped with automatic detergent delivery or WiFi control. For a washing machine equipped with an automatic detergent delivery function, the amount of the detergent can be automatically determined according to the weight of the laundry, and the corresponding amount of the detergent is put into the automatic dispensing device to realize the automatic delivery function of the detergent.

However, there are many kinds of detergents on the market, and the types are divided into common type, concentrated type, super concentrated type, etc. Different types of detergents have different active substances, and the washing required for washing the same weight of clothes is required. The appropriate amount of the agent is also different. However, current smart washing machines often do not have the automatic detection function of the detergent type, and only rely on the weight of the laundry to determine the amount of detergent. This traditional method of controlling the amount of detergent often causes problems such as low foaming and unclean laundry when a low-concentration type of detergent is put into the detergent; and detergent residue occurs when a high-concentration type of detergent is put into the detergent. Increased foam, the need to increase the number of rinsing, water and electricity and other issues. These can seriously affect the user's laundry experience.

technical problem

The invention solves the problem that the existing washing machine can not reasonably determine the amount of detergent according to the type of the detergent, and proposes an automatic detection method of the detergent type to accurately identify the type of the detergent, thereby contributing to accurate control. The amount of detergent used.

Technical solution

In one aspect, the present invention provides a detergent type detecting method, the detergent type being divided according to a detergent concentration, and divided into N types; comprising: determining N conductivity values for N types of detergents Interval; conduct conductivity detection of detergent of unknown concentration, and record the detected conductivity as d; determine the conductivity interval into which the conductivity d falls; identify the conductivity interval according to the conductivity d The type of detergent of unknown concentration.

Wherein, the N conductivity intervals are generated by separately performing conductivity detection on the N types of detergents.

Preferably, each type of detergent has a different critical point concentration, and the detergent having the concentration of the different critical point concentration is selected to perform conductivity detection separately, and a plurality of conductivity values corresponding thereto are generated, The plurality of conductivity values are used as critical points to generate the N conductivity intervals.

In another aspect, the present invention also provides a detergent dosage control method for use in a washing apparatus, comprising: conducting conductivity detection on a detergent stored in a washing apparatus, and recording the detected conductivity as d; The conductivity d is compared with a predetermined N conductivity intervals to determine a conductivity interval into which the conductivity d falls; the washing is identified based on the conductivity interval into which the conductivity d falls Type of the agent; determining the amount of the detergent according to the type of the detergent in combination with the weight of the laundry; wherein the N conductivity intervals are determined for N known types of detergent, and the N A known type of detergent is classified according to the detergent concentration.

Further, the N conductivity intervals are generated by separately performing conductivity detection on the N known types of detergents.

Preferably, the N known types of detergents have different critical point concentrations Ci (i = 1, ..., N-1), and the selected concentration is Ci (i = 1, ..., N-1) The detergent is separately subjected to conductivity detection to generate N-1 conductivity values, and the N-1 conductivity values are used as critical points to generate the N conductivity intervals.

Further, in the process of determining the amount of the detergent according to the type of the detergent in combination with the weight of the laundry, comprising: detecting the weight of the laundry in the washing device; according to the type of the identified detergent and The weight of the detected laundry is searched for a correspondence table of the pre-written washing device, wherein the correspondence table is a correspondence table of the detergent type, the weight of the laundry, and the amount of the detergent; and the correspondence table is determined by the correspondence table. The amount of detergent used.

Preferably, in the correspondence table, the weight of the laundry is divided into M files according to a gear of 2 kg, and the detergent type is divided into N categories to form M×N kinds of detergent amounts.

In still another aspect, the present invention also provides a washing machine comprising a detergent box for storing detergent, a conductivity detecting module, an automatic dispensing device, a weight detecting device and a control module; wherein the conductivity detecting module is installed in the On the detergent box, for detecting the conductivity of the detergent in the detergent box; the automatic dispensing device is installed on the detergent box for quantitatively extracting and discharging the detergent in the detergent box; The weight detecting device is configured to detect the weight of the laundry in the washing machine; the control module receives the conductivity d detected by the conductivity detecting module and the weight of the laundry detected by the weight detecting device, and the The conductivity d is compared with the N conductivity intervals of the pre-written control module to determine the conductivity interval into which the conductivity d falls, and further identifying the conductivity interval in which the conductivity d falls. a type of the detergent; the control module determines the amount of the detergent according to the type of the detergent and the weight of the laundry, and further controls The automatic dispensing device performs quantitative extraction delivery; wherein the N conductivity intervals are determined for N known types of detergents, and the N known types of detergents are classified according to detergent concentration of.

Preferably, the N conductivity intervals are generated by separately performing conductivity detection on the N known types of detergents; wherein the N known types of detergents have different critical points Concentration Ci (i = 1, ..., N-1), select the concentration of Ci (i = 1, ..., N-1) detergent to conduct conductivity detection, generate N-1 conductivity values, will The N-1 conductivity values are used as critical points to generate the N conductivity intervals.

Further, a correspondence table about the detergent type, the weight of the laundry, and the amount of the detergent is stored in the control module; the control module searches for the type of the detergent and the weight of the laundry. The control relationship table is used to determine the amount of the detergent.

Preferably, the washing machine divides the weight of the laundry into M files according to its rated washing capacity according to a gear of 2 kg, the detergent type is divided into N types, and the detergent dosage forms M×N species, thereby constructing the corresponding correspondence. Relational tables.

The present invention proposes two preferred solutions for when to determine the conductivity of the detergent stored in the detergent box:

For one purpose, the control module activates the conductivity detecting module to detect the conductivity of the detergent stored in the detergent box at the beginning of each washing process. That is, the conductivity detection is performed once before each washing starts.

Secondly, a liquid level detecting module is disposed in the washing machine, and is installed on the detergent box for detecting a liquid level change of the detergent stored in the detergent box, and generating a liquid level detecting signal to be sent to the a control module; when the liquid level of the detergent in the detergent box is detected to rise, the control module starts the conductivity detection module to detect the conductivity d of the detergent stored in the detergent box to determine The type of detergent, and thereby the detergent type parameters stored in the control module; the control module determines the amount of detergent using its stored detergent type parameters at the beginning of each wash procedure. That is, the conductivity detection is performed only when the detergent is replenished to the detergent box.

Beneficial effect

The invention utilizes conductivity to identify the type of detergent, and according to the type of detergent combined with the weight of the laundry, the meter can directly determine the amount of detergent, not only achieves accurate control of the amount of detergent, but also does not need to be based on Conductivity converts the concentration of the detergent, so the control process is more concise and the execution speed is faster. Moreover, the washing machine designed by the detergent dosage control method of the invention can directly conduct the conductivity detection of the detergent in the detergent box, and can be corresponding to the accurate conductivity interval without the dilution treatment of the detergent, and then obtain Accurate detergent type and delivery results, which simplifies the structural design of the washing machine and increases production efficiency.

Other features and advantages of the present invention will become more apparent from the detailed description of the embodiments.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

1 is a partial structural schematic view of an embodiment of a washing machine provided by the present invention;

Figure 2 is a circuit block diagram showing an embodiment of an electronic control portion of the washing machine of Figure 1;

3 is a control flow chart of an embodiment of the detergent dosage control method proposed by the present invention;

4 is a control flow chart of another embodiment of the detergent dosage control method proposed by the present invention;

Fig. 5 is a correspondence diagram relating to an embodiment of a correspondence relationship between a detergent type, a laundry weight, and a detergent usage.

Embodiments of the invention

The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

The concentration of the detergent is reflected by the content of the active substance. At present, there are two main methods for detecting the activation content of the type: optical sensor detection method and chemical reagent detection method. Among them, the optical sensor detection method has high cost and complicated structure. If it is applied to the washing machine, it will not only complicate the hardware structure design of the washing machine, but also significantly increase the cost of the washing machine. The chemical reagent detection method requires off-line detection, consumes reagents, and cannot achieve concentration discrimination on-line, and thus is not suitable for use in a washing machine product.

In order to meet the application requirements of the washing machine, the present embodiment adopts the conductivity detection method to directly reflect the type of the detergent by detecting the conductivity of the detergent, and then comprehensively determines the amount of the detergent in combination with the weight of the laundry, so that the washing machine can be more precise. The amount of detergent is controlled, and then the washing cleanliness requirements are met, and problems such as detergent residue and increased foam are avoided.

In order to conduct conductivity detection of the detergent, a conductivity detection module is required. The current conductivity detection module has a higher detection accuracy for low-concentration detergents, and a relatively low detection accuracy for high-concentration detergents. In order to meet the requirements of detection accuracy, the conventional solution is to first dilute the detergent to the same extent, by conducting conductivity detection on the diluted detergent, and converting the concentration of the diluted detergent, according to the degree of dilution. Calculate the concentration of the detergent stored in the detergent box. With this conventional solution, it is necessary to add a set amount of the dilution container and the corresponding water inlet pipe and drainage pipe in the washing machine, which not only complicates the structural design of the washing machine, but also the process of detecting and converting the detergent concentration is relatively cumbersome. , causing certain difficulties in the design of software programs.

In order to simplify the software and hardware design of the washing machine, the present embodiment adopts the interval division method to form N concentration intervals according to the concentration ranges corresponding to different types of detergents currently on the market, and N is the number of types of detergents. That is, N concentration intervals are formed for N types of detergents. Then, the conductivity detection module is used to separately detect the conductivity of the detergent in different concentration intervals, thereby forming N conductive intervals corresponding thereto. That is to say, one conductivity interval corresponds to a detergent type. A correspondence table for the amount of detergent generated in combination with the type of the detergent and the weight of the laundry is written into the computer board of the washing machine before the washing machine leaves the factory. In this way, during the actual use of the washing machine after leaving the factory, the electrical conductivity detecting module can be directly used to detect the conductivity of the detergent stored in the detergent box to determine the conductivity interval into which the electrical conductivity falls, and then according to the conductivity The conductivity interval that falls in accurately identifies the type of detergent. Using the identified type of detergent, combined with the weight of the laundry in the washing machine, look up the meter to get the exact amount of detergent. The whole process does not need to perform the conversion of conductivity to detergent concentration, which not only speeds up the processing speed of the program, simplifies the software flow design, but also compensates for the lack of detection of the detergent quality caused by the direct detection of the detergent conductivity. The exact problem. Moreover, in the hardware structure design of the washing machine, it is not necessary to add a set amount of the dilution container and the corresponding water inlet pipe and the drain pipe, and only the conductivity detecting module is installed on the detergent box, and the detergent in the detergent box is directly The conductivity detection can be performed, the hardware structure design is simple, and the hardware cost can be effectively controlled.

The hardware structure design of the washing machine of this embodiment will be specifically described below with reference to FIG. 1 and FIG. 2 .

As shown in FIG. 1 and FIG. 2, in order to realize the automatic dispensing function of the detergent, the washing machine of the present embodiment firstly provides a detergent box 2 capable of storing a certain amount of detergent in the washing machine, and is installed on the detergent box 2. The automatic dispensing device 5 is used for quantitative extraction and delivery of the detergent stored in the detergent box 2. The automatic dispensing device 5 can be designed in various ways, such as a venturi negative pressure quantitative extraction method, a quantitative pump automatic extraction method, etc., all of which can ensure an ideal control precision in the amount of delivery. The detergent quantitatively extracted by the automatic dispensing device 5 is discharged to the washing tank 1 or firstly introduced into the water inlet pipe 6 that communicates with the washing tank 1, so that the detergent is first diluted in the water inlet pipe 6 and then injected. Into the washing tank 1, this is more advantageous for the dissolution and dilution of the detergent in the washing machine.

In order to conduct conductivity detection of the detergent in the detergent box 2, the conductivity detecting module 3 is mounted on the detergent box 2 in this embodiment. The conductivity detecting module 3 can be installed under the top, the bottom or the side wall of the detergent box 2, as long as the detecting electrode can protrude into the bottom of the detergent box 2, even if the detergent is left, it can be accurate. Conduct conductivity detection.

A liquid level detecting module 4 for detecting the remaining amount of the detergent stored in the detergent box 2 may be further mounted on the detergent box 2. By performing liquid level detection on the detergent in the detergent box 2, on the one hand, the user can be promptly reminded to replenish the detergent box 2 when the detergent is about to be used up; on the other hand, the level of the detergent can be When it is raised, it is automatically recognized that a new detergent is injected into the detergent box 2. At this time, the conductivity detecting module 3 can be activated to conduct conductivity detection on the newly injected detergent to re-recognize the detergent type, thereby achieving accurate control of the amount of the delivered detergent.

Further, in the present embodiment, the washing tank 1 is further provided with a weight detecting module 7 for detecting the weight m of the laundry to be placed in the washing machine. A control module 8 is further disposed on the computer board of the washing machine, as shown in FIG. 2, receiving the conductivity d output by the conductivity detecting module 3, the liquid level detecting signal output by the liquid level detecting module 4, and the washing clothes output by the weight detecting module 7. The weight m is determined and the amount of detergent v is determined and sent to the automatic dispensing device 5 to effect metered delivery of the detergent.

The method for controlling the amount of detergent executed by the washing machine will be specifically described below in conjunction with the hardware structure shown in FIGS. 1 and 2.

The detergent dosage control method of the present embodiment is preferably implemented by the following two design schemes.

The first design is shown in Figure 3 and includes the following steps:

S301. The washing machine is powered on and initialized, waiting for the user to select a desired running program.

S302. The washing machine performs the subsequent steps each time the washing program is run.

S303, detecting the conductivity d of the detergent;

In the present embodiment, the control module 8 on the washing machine computer board first activates the conductivity detecting module 3 to detect the conductivity d of the detergent stored in the detergent box 2 each time the washing machine is detected to enter the washing program. That is, the conductivity detection process of the present scheme is performed once at the beginning of each washing process.

S304. Determine, according to the detected conductivity d, a conductivity interval in which the conductivity d is located;

In this embodiment, in the development stage of the washing machine, firstly, N conductivity intervals corresponding to the N concentration intervals corresponding to the N types of detergents are determined, and the conductivity type is used to reflect the detergent type for subsequent washing. Determination of the amount of the agent.

Specifically, different critical point concentrations Ci (i = 1, ..., N-1) can be determined for N known types of detergents currently on the market. For example, there are currently four types of washing on the market. Agents are A: normal type (concentration range is between 15% and 25%), B: concentrated type (concentration range is between 25% and 35%), C, high concentration type (concentration range is 35%~) 45%), D, super concentrated (concentration range > 45%). Selecting a detergent having a concentration of Ci (i=1, . . . , N-1) to perform conductivity detection separately, generating N-1 conductivity values, and generating the N-1 conductivity values as a critical point N conductivity intervals. For example, the detergents with the concentrations of 25%, 35%, and 45% are respectively selected for conductivity detection, and three conductivity values are generated, that is, d1=22ms/cm, d2=13ms/cm, and d3=6ms/cm; D1-d3 can determine four conductivity intervals, which are: >22ms/cm, 22ms/cm~13ms/cm, 13ms/cm~6ms/cm, <6ms/cm. Each conductivity interval corresponds to a detergent type, that is, a conductivity interval of >22 ms/cm corresponds to a type A detergent, a conductivity interval of 22 ms/cm to 13 ms/cm corresponds to a type B detergent, 13 ms/cm. The conductivity interval of ~6ms/cm corresponds to the type C detergent, and the conductivity range of <6ms/cm corresponds to the D type detergent. Thus, the conductivity interval can be utilized to indirectly reflect the type of detergent.

Since the amount of detergent required for washing clothes of different weights is also different, the determination of the amount of the detergent should be comprehensively determined in consideration of both the type of the detergent and the weight of the laundry. For the current washing machine, the washing capacity of different types of washing machines is not the same, and the weight of the laundry can be divided into M files according to the rated washing capacity of the washing machine. The M gears may be determined by means of equalizing the rated washing capacity, or may be divided into M gears by using 1 kg. For example, for an 8 kg washing machine, it can be divided into 4 files of 0~2 kg, 2~4 kg, 4~6 kg, 6~8 kg; for a 7 kg washing machine, it can be divided into 0~2 For kilograms, 2 to 4 kilograms, 4 to 6 kilograms, and 6 to 7 kilograms, for 6 kilograms, it can be divided into 3 to 2 kilograms, 2 to 4 kilograms, and 4 to 6 kilograms. And so on. When the weight m of the laundry to be put into the washing machine exceeds the rated washing capacity of the washing machine, it can be divided into the highest grade for processing.

The conductivity interval of the detergent is used according to the type of the detergent, and according to the N types of detergent and the M clothing weight positions, a correspondence table of the detergent type, the weight of the laundry, and the amount of the detergent is formed, as shown in FIG. As shown, the amount of detergent in the correspondence table can be determined experimentally. The resulting correspondence table is written to the control module 8 so that the washing machine is called during actual use.

In the correspondence table shown in Fig. 5, the detergent type is divided into four types, namely A, B, C, and D; the weight of the clothes is divided into four files, which are 0 to 2 kg, 2 to 4 kg, and 4~ respectively. 6 kg, 6 ~ 8 kg; thus can correspond to 16 detergent dosage v. The unit of detergent amount v shown in Figure 5 is in milliliters.

S305. Identify a type of the detergent according to the conductivity interval in which the conductivity d is located;

That is, the type of the detergent stored in the detergent box 2 is determined for each type of detergent corresponding to the conductivity interval.

S306, detecting the weight m of the laundry;

In the present embodiment, the weight m of the laundry laundry put into the washing machine can be detected by the weight detecting module 7 and transmitted to the control module 8 to determine the gear position in which the weight m of the laundry is in the correspondence table.

S307, combining the type of detergent and the weight m of the laundry, finding a correspondence table, determining the amount of detergent v;

In the present embodiment, the control module 8 searches for the stored correspondence table according to the type of the detergent and the gear position in which the weight m of the laundry is located, and obtains the detergent amount v corresponding thereto.

S308, controlling the automatic dispensing device 5 to quantitatively dispense the detergent according to the amount of the detergent v;

In the embodiment, the control module 8 controls the automatic dispensing device 5 to extract the detergent having the capacity v from the detergent box 2 according to the obtained detergent dosage v, and puts it into the washing tank 1 or the water inlet pipe 6. In order to achieve the quantitative delivery of detergent.

S309. Enter a normal washing procedure.

In the first design, the liquid level detecting module 4 can only be used to detect the remaining amount of detergent in the detergent box 2, and send it to the control module 8 for comparison with a preset lower limit value. When the remaining amount of the detergent is lower than the set lower limit value, the control module 8 may prompt the user to replenish the detergent box 2 with the sound/light alarm or by displaying the prompt information through the human machine interface 9.

The second design scheme is shown in Figure 4 and includes the following steps:

S401, the washing machine is powered on and initialized.

S402. The startup liquid level detecting module 4 detects the liquid level of the detergent;

In the embodiment, the liquid level detecting module 4 periodically detects the liquid level of the detergent stored in the detergent box 2, and generates a liquid level detecting signal to be sent to the control module 8 for storage. The control module 8 compares each received detergent level with the previously stored liquid level parameter, and if not, updates; if the received detergent level is compared with the previously saved liquid level parameter A significant increase is made, and it is determined that the detergent box 2 is replenished with a new detergent.

S403. If the liquid level of the detergent is raised, the subsequent steps are performed; otherwise, the process proceeds to step S407 to continue the execution.

S404, detecting the conductivity d of the detergent;

In the present embodiment, the control module 8 on the washing machine computer board activates the conductivity detecting module 3 to detect the conductance of the detergent stored in the detergent box 2 after each time the new detergent is added to the detergent box 2. Rate d. That is, the conductivity detection process of the present scheme is performed only once when the detergent is refreshed.

S405. Determine, according to the detected conductivity d, a conductivity interval in which the conductivity d is located;

For the specific determination process of the conductivity interval in which the electrical conductivity d is located, reference may be made to the related description in the above step S304, and the description will not be further described herein.

S406, identifying a type of the detergent according to the conductivity interval in which the conductivity d is located, and saving;

For the specific identification method of the detergent type, refer to the related descriptions in the above steps S304 and S305, and the description is not repeated in this embodiment. The identified type of detergent is stored in the control module 8 for the washing machine to call in the washing program.

S407. Wait for the user to select a desired running program.

S408. If the user selects to run the washing program, perform the subsequent steps; otherwise, jump to another running program to respond to the user operation.

S409. Read a type corresponding to the current detergent;

The type of current detergent has been stored in the control module 8 and can be used directly.

S410, detecting the weight m of the laundry;

The present embodiment can use the weight detecting module 7 to detect the weight m of the laundry to be put into the washing machine, and transmit it to the control module 8 to determine the gear position in which the weight m of the current laundry is in the correspondence table.

S411, combining the current type of detergent and the weight m of the laundry, finding a correspondence table, determining the amount of detergent v;

That is, the detergent amount v corresponding thereto is found from the correspondence table according to the type of the current detergent and the gear position at which the weight m of the laundry is located.

S412, controlling the automatic dispensing device 5 to quantitatively dispense the detergent according to the amount of the detergent v;

That is, the control module 8 controls the automatic dispensing device 5 to extract the detergent having the capacity v from the detergent box 2 according to the obtained detergent dosage v, and put it into the washing tank 1 or the water inlet pipe 6 to realize the detergent. Quantitative delivery.

S413. Enter a normal washing procedure.

In the second design, the liquid level detecting module 4 detects the liquid level change of the detergent in the detergent box 2 in real time and sends it to the control module 8 for storage. The control module 8 can judge the remaining amount of the detergent according to the received detergent liquid level, and control the sound/light alarm to perform the sound/light alarm when the remaining amount of the detergent is lower than the preset lower limit value. Or displaying a prompt message through the man-machine interface 9 to remind the user to promptly replenish the detergent box 2; on the other hand, when the detergent liquid level is detected to rise, it is automatically determined that there is a new one in the detergent box 2 Detergent injection. Since the type of the newly injected detergent is unknown, it is necessary to activate the conductivity detecting module 3 to perform conductivity detection on the detergent in the detergent box 2 to modify the type of the current detergent stored in the control module 8, thereby facilitating Called directly in the washing program.

The invention combines the type of the detergent and the weight of the laundry, and uses the look-up table method to determine the amount of the detergent. The scheme is simple, the implementability is strong, and the precise delivery of the detergent is realized. Of course, the detergent dosage control method of the present invention can also be applied to other washing apparatuses other than the washing machine, and the same or similar technical effects can be obtained as well.

It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not limited thereto; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that The technical solutions described in the foregoing embodiments are modified, or the equivalents of the technical features are replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (14)

A detergent type detecting method, wherein the detergent type is divided according to a detergent concentration, and is classified into N types; N conductivity intervals are determined for N types of detergents; Conductivity detection of detergent of unknown concentration, and record the detected conductivity as d; Determining the conductivity interval into which the conductivity d falls; The type of detergent of the unknown concentration is identified based on the conductivity interval into which the conductivity d falls. The detergent type detecting method according to claim 1, wherein the N conductivity intervals are generated by separately performing conductivity detection on the N types of detergents. The detergent type detecting method according to claim 2, wherein each type of detergent has a different critical point concentration, and the detergent having the concentration of the different critical point concentration is selected for conductivity detection, A plurality of conductivity values corresponding thereto are generated, and the plurality of conductivity values are used as a critical point to generate the N conductivity intervals. A detergent dosage control method for use in a washing apparatus, characterized in that Conducting conductivity detection on the detergent stored in the washing device, and recording the detected conductivity as d; Comparing the conductivity d with a predetermined N conductivity intervals to determine a conductivity interval into which the conductivity d falls; Identifying the type of the detergent according to the conductivity interval into which the electrical conductivity d falls; Determining the amount of the detergent according to the type of the detergent combined with the weight of the laundry; Wherein the N conductivity intervals are determined for N known types of detergents, and the N known types of detergents are type-divided according to the detergent concentration. The detergent dosage control method according to claim 4, wherein the N conductivity intervals are generated by separately performing conductivity detection on the N known types of detergents. The detergent dosage control method according to claim 5, wherein said N known types of detergents have different critical point concentrations Ci (i = 1, ..., N-1), and the selected concentration is The detergents of Ci (i = 1, ..., N-1) are respectively subjected to conductivity detection to generate N-1 conductivity values, and the N-1 conductivity values are used as critical points to generate the N Conductivity interval. The detergent dosage control method according to any one of claims 4 to 6, wherein in the process of determining the amount of the detergent according to the type of the detergent in combination with the weight of the laundry, the method comprises: Detecting the weight of the laundry in the washing device; Searching, according to the type of the identified detergent and the detected weight of the laundry, a correspondence table of the pre-written washing device, wherein the correspondence table is a correspondence table of the detergent type, the weight of the laundry, and the amount of the detergent. ; The amount of the detergent is determined by the correspondence table. The detergent dosage control method according to claim 4, wherein in the correspondence table, the weight of the laundry is divided into M files according to a gear of 2 kg, and the detergent type is classified into N types to form M×N species. The amount of detergent used. A washing machine, comprising: a detergent box for storing detergent; a conductivity detecting module mounted on the detergent box for detecting conductivity of the detergent in the detergent box; An automatic dispensing device installed on the detergent box for quantitatively extracting and discharging the detergent in the detergent box; a weight detecting device for detecting the weight of the laundry in the washing machine; a control module that receives the conductivity d detected by the conductivity detecting module and the weight of the laundry detected by the weight detecting device, and writes the conductivity d with N conductivity intervals previously written into the control module Comparing to determine the conductivity interval into which the electrical conductivity d falls, and further identifying the type of the detergent according to the conductivity interval into which the electrical conductivity d falls; the control module according to the washing The type of the agent is combined with the weight of the laundry to determine the amount of the detergent, thereby controlling the automatic dispensing device to perform quantitative extraction; Wherein the N conductivity intervals are determined for N known types of detergents, and the N known types of detergents are type-divided according to the detergent concentration. The washing machine according to claim 9, wherein said N conductivity intervals are generated by separately performing conductivity detection on said N known types of detergents; wherein said N types have been Known types of detergents have different critical point concentrations Ci (i = 1, ..., N-1), and detergents with a concentration of Ci (i = 1, ..., N-1) are separately tested for conductivity. N-1 conductivity values are generated, and the N conductivity intervals are generated by using the N-1 conductivity values as critical points. The washing machine according to claim 9, wherein a correspondence table relating to a detergent type, a laundry weight, and a detergent usage amount is stored in the control module; the control module is based on the detected washing The type of the agent and the weight of the laundry are searched for the comparison table to determine the amount of the detergent. The washing machine according to claim 11, wherein the washing machine divides the weight of the laundry into M gears according to its rated washing capacity in a range of 2 kg, the detergent type is divided into N types, and the detergent amount forms M×N. To construct the corresponding relationship table. The washing machine according to any one of claims 9 to 12, wherein the control module activates the conductivity detecting module to detect the detergent stored in the detergent box at the beginning of each washing program Conductivity. The washing machine according to any one of claims 9 to 12, further comprising a liquid level detecting module mounted on the detergent box for detecting detergent stored in the detergent box Level change, and generating a liquid level detection signal is sent to the control module; The control module activates the conductivity detecting module to detect the conductivity d of the detergent stored in the detergent box to detect the detergent when the liquid level of the detergent in the detergent box is detected to rise. Type, and thereby replace the stored detergent type parameters in the control module; the control module determines the amount of detergent used at the beginning of each wash program using its stored detergent type parameters.