CN109060070A - A kind of detection system and method that the automatic liquid delivery based on probe-type is used up - Google Patents
A kind of detection system and method that the automatic liquid delivery based on probe-type is used up Download PDFInfo
- Publication number
- CN109060070A CN109060070A CN201810698060.3A CN201810698060A CN109060070A CN 109060070 A CN109060070 A CN 109060070A CN 201810698060 A CN201810698060 A CN 201810698060A CN 109060070 A CN109060070 A CN 109060070A
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- China
- Prior art keywords
- probe
- signal
- controller
- liquid
- resistor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/0007—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm for discrete indicating and measuring
- G01F23/0015—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm for discrete indicating and measuring with a whistle or other sonorous signal
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/02—Devices for adding soap or other washing agents
- D06F39/022—Devices for adding soap or other washing agents in a liquid state
Abstract
The invention discloses a kind of detection system and method that the automatic liquid delivery based on probe-type uses up, are related to field of intelligent control, which includes: the first probe, the second probe, detection circuit, controller；One end of first probe and second probe is inserted into magazine, and the other end is connected with the detection circuit respectively；Be spaced a predetermined distance between first probe and second probe, first probe and second probe when being inserted into the depth and alarm of the magazine remaining amount of liquid be negatively correlated；The controller is connected with the detection circuit, analyzes for realizing signal transmitting and receiving and data.It solves the problems, such as that door sensor formula liquid level detection device residue liquid detergent when detecting that liquid level is used up influences user's Normal Wash very little, has reached and warning note, the effect for using up user's sensed in advance to liquid detergent are arranged according to user demand.
Description
Technical field
The present invention relates to field of intelligent control, detection system that especially a kind of automatic liquid delivery based on probe-type is used up
System and method.
Background technique
Current some washing machines have automatic jettison system, and a certain amount of liquid detergent is poured into liquid detergent magazine, do washing
Machine can launch suitable liquid detergent in each washing later automatically and be washed.
The automatic jettison system of washing machine is usually to use door sensor formula liquid level detection device in the market, door sensor formula level sensing
Device is to carry out water-level alarm by float switch.Magnet floating ball floats up and down with water level, and magnet floating ball is close to door status switch
When, the stabilizing magnetic field of generation makes door status switch be in actuation working condition generation level signal.But floating ball and door status switch it
Between interval it is very close, just door status switch can be made in running order, therefore remaining in magazine when detecting that liquid level is used up
Liquid detergent it is very little, user can not sensed in advance liquid detergent use up, to influence the Normal Wash of user.
Summary of the invention
The present invention regarding to the issue above and technical need, proposes what a kind of automatic liquid delivery based on probe-type was used up
Detection system and method.
Technical scheme is as follows:
In a first aspect, providing a kind of detection system that the automatic liquid delivery based on probe-type is used up, the system packet
It includes: the first probe, the second probe, detection circuit, controller；
One end of first probe and second probe be inserted into magazine in, the other end respectively with the detection circuit phase
Even；It is spaced a predetermined distance between first probe and second probe, first probe and second probe insertion
Remaining amount of liquid is negatively correlated when the depth and alarm of the magazine；
The controller is connected with the detection circuit, analyzes for realizing signal transmitting and receiving and data.
Its further technical solution are as follows: the detection circuit includes: input, output end, PNP type triode, first
Resistance, second resistance, 3rd resistor, first capacitor, the second capacitor, first interface, second interface, first diode and the two or two
Pole pipe；
The input terminal and the output end are for connecting the controller；
The input terminal is connected with the base stage of the PNP type triode, emitter and the power supply phase of the PNP type triode
Even, the collector of the PNP type triode is connected with one end of first resistor, the other end of the first resistor and described second
One end of resistance is connected, the other end ground connection of the second resistance, the other end of the second resistance also with the one or two pole
The anode of pipe is connected, and the cathode of the first diode is connected with the anode of second diode, second diode
Cathode is connected with power supply, one end of the 3rd resistor be connected between the first resistor and the second resistance and
Between the first diode and second diode, the other end of the 3rd resistor is connected with the output end, described
One end of first capacitor is connected with the output end, other end ground connection, and one end of second capacitor is connected to first electricity
Between resistance and the second resistance, other end ground connection, the first interface is connected with one end of second capacitor, and described second
Interface is connected with the other end of second capacitor；
The first interface by detect harness be connected with first probe, the second interface by detect harness and
Second probe is connected.
Second aspect provides a kind of detection method that the automatic liquid delivery based on probe-type is used up, and is applied to such as the
In detection system described in one side, which comprises
First probe and second probe are inserted into the magazine according to target depth；
The first signal is sent to first probe by the controller；
The second signal that second probe returns is read by the controller；
When first signal is identical as the type of the second signal, control output alarm signal.
Its further technical solution are as follows: described that first signal, packet are sent to first probe by the controller
It includes:
Pulse width modulation (PWM) signal is sent to first probe by the controller；
It is described when first signal is identical as the type of the second signal, control output alarm signal, comprising:
When first signal and the second signal are pwm signal, control output alarm signal.
Its further technical solution are as follows: described that the second signal that second probe returns is read by the controller
Later, further includes:
When first signal is pwm signal, and the second signal is AD signal, the AD electricity of the second signal is detected
Pressure value；
Determine that the liquid in the magazine is liquid detergent or water according to the AD voltage value；
When the liquid in the magazine is water, control output alarm signal；
When the liquid in the magazine is liquid detergent, control washing machine executes normal washing procedure.
The method have the benefit that:
By the way that the first probe and the second probe are arranged in magazine, due to the depth of the first probe and the second probe insertion magazine
Remaining amount of liquid is negatively correlated when degree is with alarm, therefore the first probe and second can be arranged according to the use demand of user and visit
The insertion depth of needle solves the problems, such as to detect that liquid level is too low when liquid is used up, while user can be used with sensed in advance liquid
To the greatest extent, and the access times that can also be launched automatically after liquid level warning can be effectively learnt according to insertion depth.
In addition, different according to the conductivity of liquid detergent and clear water, can also distinguish between out the liquid in magazine be liquid detergent also
It is clear water.
Detailed description of the invention
Fig. 1 is the structural representation for the detection system that a kind of automatic liquid delivery based on probe-type provided by the invention is used up
Figure.
Fig. 2 is a kind of schematic diagram of detection circuit provided by the invention.
Fig. 3 is the flow chart for the detection method that a kind of automatic liquid delivery based on probe-type provided by the invention is used up.
Specific embodiment
The following further describes the specific embodiments of the present invention with reference to the drawings.
Fig. 1 is the structural representation for the detection system that a kind of automatic liquid delivery based on probe-type provided by the invention is used up
Figure, as shown in Figure 1, the system includes: the first probe 10, the second probe 20, detection circuit 30 and controller 40.
One end of first probe 10 and the second probe 20 is inserted into magazine, and the other end is connected with detection circuit 30 respectively；The
It is spaced a predetermined distance between one probe 10 and the second probe 20, the depth and report of the first probe 10 and the second probe 20 insertion magazine
Remaining amount of liquid is negatively correlated when alert；Controller 40 is connected with detection circuit 30, analyzes for realizing signal transmitting and receiving and data.
Fixed height in a part insertion magazine of first probe 10 and the second probe 20, another part are exposed at magazine external application
In wiring.
Optionally, detection circuit 30 and controller 40 can be set in the control mainboard of washing machine.
Optionally, in conjunction with reference Fig. 2, it illustrates a kind of schematic diagram of detection circuit, detection circuit 30 includes input terminal
31, output end 32, PNP type triode Q, first resistor R1, second resistance R2,3rd resistor R3, first capacitor C1, the second capacitor
C2, first interface 33, second interface 34, first diode D1, the second diode D2.
Input terminal 31 and output end 32 are used to connect the control pin of controller 40；First interface 33 by detection harness with
First probe 10 is connected, and second interface 34 is connected by detecting harness with the second probe 20.
Input terminal 31 is connected with the base stage of PNP type triode Q, and the emitter of PNP type triode Q is connected with power supply, positive-negative-positive
The collector of triode Q is connected with one end of first resistor R1, one end phase of the other end and second resistance R2 of first resistor R1
Even, the other end ground connection of second resistance R2, the other end of second resistance R2 are also connected with the anode of first diode D1, and the one or two
The cathode of pole pipe D1 is connected with the anode of the second diode D2, and the cathode of the second diode D2 is connected with power supply, 3rd resistor R3
One end be connected between first resistor R1 and second resistance R2 and first diode D1 and the second diode D2 between,
The other end of 3rd resistor R3 is connected with output end 32, and one end of first capacitor C1 is connected with output end 32, other end ground connection, the
One end of two capacitor C2 is connected between first resistor R1 and second resistance R2, other end ground connection, first interface 33 and the second electricity
The one end for holding C2 is connected, and second interface 34 is connected with the other end of the second capacitor C2.
Illustratively, first resistor R1 is 1k Ω, and second resistance R2 is 10k Ω, and 3rd resistor R3 is 1k Ω, first capacitor
C1 is 10nF, and the second capacitor C2 is 100pF.
It should be noted that the resistance of a 10k Ω is connected between the emitter and base stage of PNP type triode Q, one
The resistance of 10k Ω is connected between the base stage of PNP type triode Q and input terminal 31, PNP type triode Q and the two resistive seals
It is fitted together.
First diode D1 and the second diode D2 are packaged together, and constitute zener diode, play burning voltage.
Optionally, precision resister can be used in second resistance R2 and 3rd resistor R3.
Optionally, controller 40 can be micro-control unit (English: Micro Control Unit, abbreviation: MCU).
Fig. 3 is the flow chart for the detection method that a kind of automatic liquid delivery based on probe-type provided by the invention is used up,
This method is applied in detection system as shown in Figure 1 or 2, as shown in figure 3, this method may comprise steps of:
Step 110, by the first probe and the second probe according in target depth insertion magazine.
According to the use demand of user, the target depth in the first probe and the second probe insertion magazine is calculated.First
The height of probe and the second probe apart from magazine bottom also can be carried out the number of Normal Wash when using up alarm with liquid level related, if
The number needed is more, then the first probe and the depth of the second probe insertion are smaller.Therefore when liquid level uses up alarm, Yong Huneng
According to the initial quick determination of setting can also the number of normal use avoid liquid level from using completely to supply liquid detergent in time
The problem of influencing Normal Wash to the greatest extent.
Step 120, the first signal is sent to the first probe by controller.
Controller sends the first signal to the input terminal of detection circuit, and the first signal is transmitted to the first spy by detection circuit
Needle.
Optionally, step 120 can be implemented as by controller to the first probe send pulse width modulation (English:
Pulse Width Modulation, referred to as: PWM) signal.
For example, controller sends the pwm signal of 1kHz to the first probe.
Step 130, the second signal that the second probe returns is read by controller.
Step 140, when the first signal is identical as the type of second signal, control output alarm signal.
It is air between the first probe and the second probe if liquid level is lower than the bottom of the first probe and the second probe, the
The signal that two probes receive is as the signal that the first probe is sent.
It is liquid, liquid between the first probe and the second probe if liquid level is higher than the bottom of the first probe and the second probe
It include conductive ion in body, then the signal that the second probe receives and the signal that the first probe is sent are different.
Optionally, step 140 can be implemented as when the first signal and the second signal are pwm signal, control output report
Alert signal.
For example, the first probe is sent out the pwm signal of 1kHz, the second probe then receives the pwm signal of same frequency.
Optionally, controller 40 not only can determine whether liquid is used up according to the type of second signal, can also basis
The signal value of second signal determines that the liquid in magazine is liquid detergent or clear water.
When the first signal is pwm signal, and second signal is AD signal, controller 40 detects the AD voltage of second signal
Value, determines that the liquid in magazine is liquid detergent or water according to AD voltage value；When the liquid in magazine is water, control output report
Alert signal, when the liquid in magazine is liquid detergent, control washing machine executes normal washing procedure.
Due to containing many conductive ions in liquid, if the first probe sends pwm signal, the second probe can be to controller
The AD signal of feedback stability.
Due to containing the conductive ions such as many sodium ion and magnesium ion, the conductivity and water of liquid detergent in liquid detergent
Conductivity it is different, the AD voltage value of feedback is also different, by the way that threshold value is arranged, AD voltage is compared with threshold value, if AD is electric
Pressure value is higher than threshold value, then is determined as liquid detergent, if AD voltage value is lower than threshold value, is determined as water, needs warning reminding user more
Change liquid detergent.
Above-described is only preferred embodiments of the invention, and present invention is not limited to the above embodiments.It is appreciated that this
The other improvements and change that field technical staff directly exports or associates without departing from the spirit and concept in the present invention
Change, is considered as being included within protection scope of the present invention.
Claims (5)
1. a kind of detection system that the automatic liquid delivery based on probe-type is used up, which is characterized in that the system comprises: first
Probe, the second probe, detection circuit, controller；
One end of first probe and second probe is inserted into magazine, and the other end is connected with the detection circuit respectively；
It is spaced a predetermined distance between first probe and second probe, described in first probe and second probe insertion
Remaining amount of liquid is negatively correlated when the depth and alarm of magazine；
The controller is connected with the detection circuit, analyzes for realizing signal transmitting and receiving and data.
2. detection system according to claim 1, which is characterized in that the detection circuit include: input, output end,
PNP type triode, first resistor, second resistance, 3rd resistor, first capacitor, the second capacitor, first interface, second interface,
One diode and the second diode；
The input terminal and the output end are for connecting the controller；
The input terminal is connected with the base stage of the PNP type triode, and the emitter of the PNP type triode is connected with power supply,
The collector of the PNP type triode is connected with one end of first resistor, the other end of the first resistor and second electricity
One end of resistance is connected, the other end ground connection of the second resistance, the other end of the second resistance also with the first diode
Anode be connected, the cathode of the first diode is connected with the anode of second diode, the yin of second diode
Pole is connected with power supply, and one end of the 3rd resistor is connected between the first resistor and the second resistance and institute
It states between first diode and second diode, the other end of the 3rd resistor is connected with the output end, and described
One end of one capacitor is connected with the output end, and other end ground connection, one end of second capacitor is connected to the first resistor
Between the second resistance, other end ground connection, the first interface is connected with one end of second capacitor, and described second connects
Mouth is connected with the other end of second capacitor；
The first interface by detect harness be connected with first probe, the second interface pass through detect harness with it is described
Second probe is connected.
3. a kind of detection method that the automatic liquid delivery based on probe-type is used up, which is characterized in that be applied to such as claim 1
Or in detection system described in 2, which comprises
First probe and second probe are inserted into the magazine according to target depth；
The first signal is sent to first probe by the controller；
The second signal that second probe returns is read by the controller；
When first signal is identical as the type of the second signal, control output alarm signal.
4. according to the method described in claim 3, it is characterized in that, described sent by the controller to first probe
First signal, comprising:
Pulse width modulation (PWM) signal is sent to first probe by the controller；
It is described when first signal is identical as the type of the second signal, control output alarm signal, comprising:
When first signal and the second signal are pwm signal, control output alarm signal.
5. according to the method described in claim 4, it is characterized in that, described returned by controller reading second probe
After the second signal returned, further includes:
When first signal is pwm signal, and the second signal is AD signal, the AD voltage of the second signal is detected
Value；
Determine that the liquid in the magazine is liquid detergent or water according to the AD voltage value；
When the liquid in the magazine is water, control output alarm signal；
When the liquid in the magazine is liquid detergent, control washing machine executes normal washing procedure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810698060.3A CN109060070A (en) | 2018-06-29 | 2018-06-29 | A kind of detection system and method that the automatic liquid delivery based on probe-type is used up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810698060.3A CN109060070A (en) | 2018-06-29 | 2018-06-29 | A kind of detection system and method that the automatic liquid delivery based on probe-type is used up |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109060070A true CN109060070A (en) | 2018-12-21 |
Family
ID=64818457
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810698060.3A Pending CN109060070A (en) | 2018-06-29 | 2018-06-29 | A kind of detection system and method that the automatic liquid delivery based on probe-type is used up |
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| CN (1) | CN109060070A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110346015A (en) * | 2019-08-05 | 2019-10-18 | 杭州微联智控科技有限公司 | Electric pole type water logging detection circuit and water sensor |
| CN114717806A (en) * | 2020-12-22 | 2022-07-08 | 青岛海尔滚筒洗衣机有限公司 | Liquid storage box, additive feeding module and liquid storage box identification method |
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| JPH06307915A (en) * | 1993-04-28 | 1994-11-04 | Omron Corp | Liquid sensor |
| CN102155969A (en) * | 2011-03-18 | 2011-08-17 | 深圳和而泰智能控制股份有限公司 | Water level detecting circuit, device and method |
| CN102535112A (en) * | 2012-02-16 | 2012-07-04 | 海尔集团公司 | Circuit and method for detecting detergents |
| CN205368781U (en) * | 2015-12-29 | 2016-07-06 | Tcl家用电器（合肥）有限公司 | Liquid level detecting head, liquid level detecting device and washing machine |
| CN106400403A (en) * | 2015-07-30 | 2017-02-15 | 青岛海尔滚筒洗衣机有限公司 | Water inlet box with function of detecting whether detergents are delivered and washing machine |
| CN107217452A (en) * | 2017-07-21 | 2017-09-29 | 无锡和晶信息技术有限公司 | A kind of automatic detergent feeding system and method |
-
2018
- 2018-06-29 CN CN201810698060.3A patent/CN109060070A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06307915A (en) * | 1993-04-28 | 1994-11-04 | Omron Corp | Liquid sensor |
| CN102155969A (en) * | 2011-03-18 | 2011-08-17 | 深圳和而泰智能控制股份有限公司 | Water level detecting circuit, device and method |
| CN102535112A (en) * | 2012-02-16 | 2012-07-04 | 海尔集团公司 | Circuit and method for detecting detergents |
| CN106400403A (en) * | 2015-07-30 | 2017-02-15 | 青岛海尔滚筒洗衣机有限公司 | Water inlet box with function of detecting whether detergents are delivered and washing machine |
| CN205368781U (en) * | 2015-12-29 | 2016-07-06 | Tcl家用电器（合肥）有限公司 | Liquid level detecting head, liquid level detecting device and washing machine |
| CN107217452A (en) * | 2017-07-21 | 2017-09-29 | 无锡和晶信息技术有限公司 | A kind of automatic detergent feeding system and method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110346015A (en) * | 2019-08-05 | 2019-10-18 | 杭州微联智控科技有限公司 | Electric pole type water logging detection circuit and water sensor |
| CN114717806A (en) * | 2020-12-22 | 2022-07-08 | 青岛海尔滚筒洗衣机有限公司 | Liquid storage box, additive feeding module and liquid storage box identification method |
| CN114717806B (en) * | 2020-12-22 | 2023-10-20 | 青岛海尔洗涤电器有限公司 | Liquid storage box, additive delivery module and identification method of liquid storage box |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20190729 Address after: 214028 No. 177 Changjiang East Road, Xinwu District, Wuxi City, Jiangsu Province Applicant after: Wuxi Hejing Intelligent Technology Co., Ltd. Address before: 214000 East Yangtze Road, Wuxi New District, Jiangsu Province, No. 177 Applicant before: Wuxi Hodgen Technology Co., Ltd. |
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Application publication date: 20181221 |
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