WO2015096671A1 - 一种适用于排水泵的水位检测控制电路及其工作方法 - Google Patents
一种适用于排水泵的水位检测控制电路及其工作方法 Download PDFInfo
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- WO2015096671A1 WO2015096671A1 PCT/CN2014/094432 CN2014094432W WO2015096671A1 WO 2015096671 A1 WO2015096671 A1 WO 2015096671A1 CN 2014094432 W CN2014094432 W CN 2014094432W WO 2015096671 A1 WO2015096671 A1 WO 2015096671A1
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- water level
- drain pump
- unit
- detecting
- control circuit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
Definitions
- the invention relates to the field of drainage pumps, in particular to a water level detection control circuit suitable for a drainage pump and a working method thereof.
- the drainage pumps for various types of electrical appliances on the market generally design the pump body separately from the water level sensor, resulting in inconvenient installation, and the separation of the pump body and the water level sensor also makes the control circuit more complicated.
- the water level sensor in the prior art mostly adopts a reed switch type float switch. Since the reed tube type float is a movable part, the water level control is complicated, and the liquid level is liable to cause a malfunction when the liquid level fluctuates.
- the object of the present invention is to provide a water level detecting control circuit suitable for a drain pump and a working method thereof, so that the water level detecting control circuit can be installed in the drain pump, form an integrated structure with the drain pump, and the water level detecting control circuit is provided.
- the function of anti-liquid level fluctuation is simple, easy to integrate and reliable.
- an aspect of the present invention provides a water level detecting control circuit suitable for a drain pump, the water level detecting control circuit including a power supply unit, a detecting unit, and a water pump unit;
- the power supply unit is configured to supply a voltage to the detecting unit and the water pump unit;
- the detecting unit includes a sensor portion for periodically detecting a water level position in the drain pump, and a comparing portion for sensing a value corresponding to the water level position and a preset in the detecting unit The first threshold is compared, and a driving signal is generated according to the comparison result;
- the water pump unit is configured to receive a driving signal from the detecting unit to operate the drain pump for a preset period of time.
- control circuit can be provided with a function of automatically detecting the water level position in the drain pump by the above-described setting of the water level detecting control circuit, and can control the drain pump operation according to the comparison result.
- the water level detecting control circuit is installed inside the drain pump.
- the power supply unit includes a power supply unit and a voltage stabilization unit, wherein
- the power supply unit is configured to convert the external alternating current into direct current, and provide the converted direct current to the voltage stabilizing unit and the water pump unit;
- the voltage stabilizing unit is configured to supply the converted DC power to the detecting unit and the water pump unit.
- the detecting unit comprises two sets of detecting circuits, wherein the sensor part of the first group of detecting circuits is used for periodically detecting the water level position in the drain pump, and the comparing part compares the sensing value corresponding to the water level position and Comparing the first thresholds preset in the comparison portion of the first group of detection circuits, and generating a driving signal according to the comparison result; the sensor portion in the second group of detecting circuits is for periodically detecting the water level position in the drain pump, The comparing portion compares the sensing value corresponding to the water level position and the second threshold value preset in the comparing portion of the second group detecting circuit, and generates a driving signal according to the comparison result.
- the water pump unit includes a delay control circuit for receiving the driving signal from the detecting unit, and controlling the drain pump operation according to the preset at least one intermittent starting period and one working period, wherein
- the intermittent start cycle refers to a first time period in which the drain pump is started and a second time period in which the drain pump is inoperative;
- the duty cycle refers to a third time period in which the drain pump operates normally, and the third time period Greater than the first time period.
- the delay control circuit is further configured to control the drain pump operation according to a preset delay period after receiving the signal from the detecting unit from the driving signal to the no-input signal, wherein the delay The time period is the fourth period of time during which the drain pump continues to operate.
- the pump unit further includes an alarm output interface for an external alarm circuit.
- Another aspect of the present invention provides a method of operating a water level detection control circuit suitable for use in a drain pump, the method comprising the steps of:
- the drain pump does not work
- the beneficial effect of this aspect of the invention is that the drainage pump can be controlled to operate in a predetermined mode of operation by the above-described working method.
- the control drain pump operates according to a preset delay period, wherein the delay period refers to a fourth period of time during which the drain pump continues to operate.
- the method further comprises the following steps:
- the drain pump When the sensing value is greater than the second threshold, the drain pump is controlled to operate normally, and an alarm signal is issued to the outside.
- Fig. 1 is a block diagram showing a water level detecting control circuit according to the present invention.
- Fig. 2 is a circuit diagram showing the power supply unit of the present invention.
- Fig. 3 is a circuit diagram showing the voltage stabilizing unit of the present invention.
- Fig. 4 shows a circuit schematic of a detecting unit according to the present invention.
- Fig. 5 shows a circuit schematic of a water pump unit according to the present invention.
- FIG. 6 is a timing chart showing control of the delay control chip according to the present invention, (a) is a control timing when the delay control chip receives a low level; (b) is a low-level switching of the input of the delay control chip Control timing to no input.
- the water level detecting control circuit includes a power supply unit 10, a voltage stabilizing unit 20, a detecting unit 30, and a water pump unit 40.
- the power supply unit 10 is respectively connected to the voltage stabilizing unit 20 and the water pump unit 40.
- the voltage stabilizing unit 20 is also respectively connected to the detecting unit 30 and the water pump unit 40, and the detecting unit 30 is connected with the water pump unit 40. connection.
- the circuit diagram of the specific power supply unit 10 is as shown in FIG. 2, and the switching power supply management chip U1 of the type CX7131 can be used in the power supply unit 10.
- the circuit of the power supply unit 10 is a common application of the switching power management chip U1. Circuit.
- the specific function of the circuit is to convert the AC power connected to the L port and the N port into 12 V DC power, and supply the above 12 V DC power to the voltage stabilizing unit 20 and the water pump unit 40.
- the circuit schematic diagram of the specific voltage stabilizing unit 20 is shown in FIG. 3, and the voltage stabilizing chip U5 of the type 78L05 can be used in the voltage stabilizing unit 20, and the pin 1 of the voltage stabilizing chip U5 is a voltage input pin. Connected to the output end of the power supply unit 10 through the fifth diode D5, wherein the fifth diode D5 is used for anti-discharge; the pin 2 of the voltage stabilizing chip U5 is a ground pin; The 3 pin of the chip U5 is a voltage output pin for outputting the regulated 5V voltage to the detecting unit 30 and the water pump unit 40, and the output pin is also grounded via the thirteenth capacitor C13.
- the circuit schematic diagram of the specific detecting unit 30 is as shown in FIG. 4, and the detecting unit 30 adopts a chip with a water level detecting function, specifically including a low water level detecting chip U2 and a high water level detecting chip U3, and the above two detecting chips are the same
- the IC in which the low water level means that the water level in the drain pump is in the normal water level range; the high water level means that the water level in the drain pump is in an abnormal water level range.
- the pin 1 of the low water level detecting chip U2 is a signal input pin, which can be connected to the first sensing head through the first interface B, for detecting the change of the external capacitance field, and reading the capacitance value; the low water level detecting chip
- the 2 pin of U2 is suspended; the 3 pin of the low water level detecting chip U2 is an output pin, and is connected to the second connection point P2 through the fourteenth resistor R14; the 4 feet of the low water level detecting chip U2 are suspended; the low The 5 feet of the water level detecting chip U2 are grounded; the 6 feet of the low water level detecting chip U2 are suspended; the low water level detecting chip U2 7
- the pin is connected to the 3 pin of the voltage stabilizing unit 20 through the tenth capacitor C10; the 8 pin of the low water level detecting chip U2 is connected to the 3 pin of the voltage stabilizing unit 20, and the tenth pin is drawn from the 3 pin of the voltage stabilizing unit 20
- the nine resistor R19 is connected to the
- the pin 1 of the high water level detecting chip U3 is a signal input pin, and the second inductive head can be connected through the second interface C for detecting a change of the external capacitive field, and reading the capacitance value, wherein the second sensing The position of the head is higher than the position of the first inductive head; the 2 feet of the high water level detecting chip U3 are suspended; the 3 pin of the high water level detecting chip U3 is an output pin, and is connected to the first through the fifteenth resistor R15.
- the pin is connected to the 3 pin of the voltage stabilizing unit 20 through the eleventh capacitor C11; the pin 8 of the high water level detecting chip U3 is connected to the 3 pin of the voltage stabilizing unit 20, and is led out from the 3 pin of the voltage stabilizing unit 20
- the twelve capacitor C12 is grounded.
- the circuit schematic diagram of the specific water pump unit 40 is shown in FIG. 5, and the delay control chip U4 can be used in the water pump unit 40.
- the 1 pin of the delay control chip U4 is a power supply pin and is connected to the voltage stabilization unit 20 3 feet; the 2, 3, 4, 5 feet of the delay control chip U4 are suspended; the 6 feet of the delay control chip U4 are connected to the base of the NPN type first transistor Q1 through the sixteenth resistor R16.
- the pin of the delay control chip U4 is connected to the second connection point P2; the 8th pin of the delay control chip U4 is grounded; the emitter of the first transistor Q1 is grounded; the first transistor Q1 is The collector is connected to the 2 pin of the Hall switch of the type US79; the 2 pin of the Hall switch is also connected to the collector of the NPN type second transistor Q2; the emitter of the second transistor Q2 is grounded; The base of the second transistor Q2 passes through the seventeenth resistor R17, the eighteenth resistor R18 is connected to the third interface D, and the interface can be connected to an external alarm circuit; the collector connection of the PNP type third transistor Q3 Between the seventeenth resistor R17 and the eighteenth resistor R18, the emitter of the third transistor Q3 is connected to the 3 pin of the voltage stabilizing unit 20; the base of the third transistor Q3 is connected To the first connection point P1; the 1st and 3rd feet of the Hall switch are respectively connected to the left and right coils of the motor M1; the motor
- the program set in the low water level detecting chip U2 is used to complete the low water level detecting function.
- the specific detecting process is as follows: the first sensing head connected to the first interface B of the chip 1 is used to sense the change of the external capacitance field.
- the low water level detecting chip U2 reads the current capacitance value CB; since the 7th pin of the low water level detecting chip U2 has previously set the first capacitance threshold C10, The low water level detecting chip U2 will read the above 1 foot
- the capacitance value CB is compared with the first capacitance threshold of the 7-pin; when the capacitance value CB is higher than the first capacitance threshold C10, the 3 feet of the low-water detection chip U2 are turned on, and the output is low; When the capacitance value CB is lower than the first capacitance threshold C10, the 3 feet of the low water level detecting chip U2 have no output.
- the program set in the high water level detecting chip U3 is used to complete the high water level detecting function.
- the specific detecting process is as follows: the first sensing head connected to the second interface C of the chip 1 is used to sense the change of the external capacitance field.
- the high water level detecting chip U3 reads the current capacitance value CC; since the second capacitance threshold C11 has been preset in the 7th pin of the high water level detecting chip U3,
- the high water level detecting chip U3 compares the capacitance value CC read by the 1 pin with the second capacitance threshold of the 7 pin; when the capacitance value CC is higher than the second capacitance threshold C11, the high water level detecting chip
- the 3 pin of U3 will be turned on and output low level; when the capacitance value CC is lower than the second capacitance threshold C11, the 3 pin of the high water level detecting chip U3 has no output.
- the program set in the delay control chip U4 is used to complete the delay control function, and the specific delay control process is shown in FIG. 6: when the 7th pin of the delay control chip U4 receives a low level, the chip The 6 feet output a high level in the first preset time period T1, and there is no output in the second preset time period T2, and the first preset time period T1 and the second preset time period T2 are used as the drain pump During the intermittent start-up period, after the second preset time period T2, a plurality of intermittent start-up periods may be set as needed, and the air in the working chamber of the impeller of the drain pump is substantially evacuated.
- the high level is outputted in the third preset time period T3 to officially start the drain pump operation; when the 7th leg of the delay control chip U4 is switched from the low level to the no input, the 6 feet of the chip are preset.
- the fourth period of time T4 continues to output a high level, and after the fourth period of time T4, the 6-pin of the delay control chip U4 has no output.
- the working principle of the water level detecting control circuit applicable to the drain pump according to the present invention is that the power supply unit 10 converts the external alternating current into a 12V direct current power supply motor M1 and a pin of the voltage stabilizing unit 20; the voltage stabilizing unit 20 The above 12V voltage is regulated, and the low water level detecting chip U2 and the high water level detecting chip U3 in the detecting unit 30 and the delay control chip U4 and the third transistor Q3 in the water pump unit 40 are powered by the regulated 5V voltage. .
- the low water level detecting chip U2 reads the current external capacitance field capacitance value CB through the first sensor head connected to the first interface B; The capacitance value CB is compared with the first capacitance threshold C10. When the capacitance value CB is lower than the first capacitance threshold C10, the water level of the drainage pump is lower than the position of the first sensing head, and the drainage function does not need to be activated.
- the low water level detecting chip U2 has no output at the 3 feet, so that the delay When the control chip U4 is not working, there is no high level output, so that the first transistor Q1 is turned off, and finally the motor M1 does not work.
- the capacitance value CB When the capacitance value CB is higher than the first capacitance threshold C10, it indicates that the water level of the drain pump is higher than the position of the first sensing head, and at this time, the 3 feet of the low water level detecting chip U2 will be turned on, and the output is low. Triggering the 7-pin of the delay control chip U4, so that the 6-pin of the chip outputs a high level after a preset intermittent start period, so that the first transistor Q1 is turned on, and finally the motor M1 is energized to operate, and the pump is Out.
- the capacitance value CB When the capacitance value CB is changed from the first capacitance threshold C10 to be lower than the first capacitance threshold C10, it indicates that the water level of the drainage pump is already lower than the position of the first induction head, and the drainage function is not required to be activated.
- the 3 pin of the water level detecting chip U2 has no output, so that the 7 feet of the delay control chip U4 are switched from the low level to the no input state, and the 6 pins of the chip continue to be output in the preset fourth time period T4.
- the first transistor Q1 is turned on, and the motor M1 is energized, but after the fourth period T4 is over, the 6th pin of the delay control chip U4 has no high level output, and the first time Transistor Q1 is turned off, eventually making motor M1 inoperative.
- the low water level detecting chip U2 circuit fails or is damaged, or when the low water level detecting chip U2 circuit works normally, but the inflow water flow rate of the drain pump is greater than the drainage flow rate, the water level in the drain pump is higher than The first sensing head continues to rise to the second sensing head, at which time the high water level detecting chip U3 circuit will be activated.
- the high water level detecting chip U3 reads the capacitance value CC of the current external capacitance field through the second sensor head connected to the second interface C;
- the capacitance value CC is compared with the second capacitance threshold C11.
- the capacitance value CC is higher than the second capacitance threshold C11, it indicates that the water level of the drainage pump is higher than the position of the second induction head, and the drainage function and the external alarm function are required to be activated.
- the 3 feet of the high water level detecting chip U3 output a low level, so that the third transistor Q3 is turned on, and then the second transistor Q2 is turned on, and finally the motor M1 is energized to pump out.
- the third interface D turns on the external alarm circuit to implement the alarm function.
- the water level detecting control circuit suitable for the drain pump according to the present invention can be installed in the drain pump and form an integrated structure with the drain pump; since the water level detecting control circuit does not include a reed switch type float switch such as the prior art.
- the moving parts are therefore resistant to liquid level fluctuations; the water level detection control circuit is also simple, easy to integrate and reliable.
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- General Engineering & Computer Science (AREA)
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- Control Of Positive-Displacement Pumps (AREA)
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Abstract
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Claims (10)
- 一种适用于排水泵的水位检测控制电路,其特征在于:所述水位检测控制电路包括供电单元、检测单元以及水泵单元;其中所述供电单元,用于对所述检测单元以及水泵单元提供电压;所述检测单元,包括传感器部分和比较部分,其中所述传感器部分用于周期性的检测排水泵中水位位置;所述比较部分将所述水位位置所对应的感应数值以及所述检测单元中预设的第一阈值进行比较,并根据比较结果产生驱动信号;所述水泵单元,用于接收来自所述检测单元的驱动信号,使所述排水泵工作预设的时间段。
- 根据权利要求1所述的适用于排水泵的水位检测控制电路,其特征在于:所述水位检测控制电路安装于所述排水泵的内部。
- 根据权利要求1或2所述的适用于排水泵的水位检测控制电路,其特征在于:所述供电单元包括电源单元和稳压单元,其中所述电源单元,用于将外接的交流电转换成直流电,并将转换后的直流电提供给所述稳压单元以及所述水泵单元;所述稳压单元,用于将所述转换后的直流电进行稳压后提供至所述检测单元以及所述水泵单元。
- 根据权利要求1或2所述的适用于排水泵的水位检测控制电路,其特征在于:所述检测单元包括两组检测电路,其中第一组检测电路中的传感器部分用于周期性的检测排水泵中水位位置,第一组检测电路中的比较部分将所述水位位置所对应的感应数值以及所述第一组检测电路的比较部分中预设的第一阈值进行比较,并根据比较结果产生驱动信号;第二组检测电路中的传感器部分用于周期性的检测排水泵中水位位置,第二组检测电路中的比较部分将所述水位位置所对应的感应数值以及所述第二组检测电路的比较部分中预设的第二阈值进行比较,并根据比较结果产生驱动信号。
- 根据权利要求1或2所述的适用于排水泵的水位检测控制电路,其特征在于:所述水泵单元中包括延时控制电路,用于接收来自所述检测单元的驱动信号后,按照预设的至少一个间歇启动周期以及一个工作周期来控制所述 排水泵工作,所述间歇启动周期是指使所述排水泵启动的第一时间段以及使所述排水泵不工作的第二时间段之和;所述工作周期是指使所述排水泵正常工作的第三时间段,并且所述第三时间段大于所述第一时间段。
- 根据权利要求5所述的适用于排水泵的水位检测控制电路,其特征在于:所述延时控制电路还用于在接收到来自所述检测单元的信号从驱动信号变为无输入信号后,按照预设的延时周期来控制所述排水泵工作,所述延时周期是指使所述排水泵继续工作的第四时间段。
- 根据权利要求5所述的适用于排水泵的水位检测控制电路,其特征在于:所述水泵单元中还包括报警输出接口,用于外接报警电路。
- 一种适用于排水泵的水位检测控制电路的工作方法,其特征在于:所述方法包括以下步骤:用第一传感器产生排水泵中水位位置所对应的感应数值;将所述感应数值与第一阈值相比较;当所述感应数值小于所述第一阈值时,所述排水泵不工作;当所述感应数值大于所述第一阈值时,控制所述排水泵按照预设的至少一个间歇启动周期以及一个工作周期来工作,其中所述间歇启动周期是指使所述排水泵启动的第一时间段以及使排水泵不工作的第二时间段之和;所述工作周期是指使所述排水泵正常工作的第三时间段,并且所述第三时间段大于所述第一时间段。
- 根据权利要求8所述的适用于排水泵的水位检测控制电路的工作方法,其特征在于:当上一次检测到的所述排水泵中水位位置所对应的感应数值大于所述第一阈值,并且当前检测到的排水泵中水位位置所对应的感应数值小于所述第一阈值时,控制所述排水泵按照预设的延时周期来工作,其中所述延时周期是指使所述排水泵继续工作的第四时间段。
- 根据权利要求8或9所述的适用于排水泵的水位检测控制电路的工作方法,其特征在于:当所述排水泵的水位位置高于低水位时,所述方法还包括以下步骤:用高于所述第一传感器的第二传感器产生所述排水泵中水位位置所对应的感应数值;将所述感应数值与第二阈值相比较;当所述感应数值大于所述第二阈值时,控制所述排水泵正常工作,并且对外发出报警信号。
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JP2015554052A JP2016513194A (ja) | 2013-12-27 | 2014-12-19 | 排水ポンプに適用する水位検出制御回路及びその作動方法(関連出願の参照)本出願は、2013年12月27日に中国特許庁に提出された、出願番号第201310739790.0号、タイトル「排水ポンプに適用する水位検出制御回路及びその作動方法」という中国特許出願の優先権の利益を主張し、そのすべての内容を引用により本出願に組み込むものとする。 |
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CN113027784B (zh) * | 2021-03-31 | 2022-04-22 | 浙江大元泵业股份有限公司 | 一种潜水泵缺水检测控制方法 |
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CN107458303A (zh) * | 2017-06-23 | 2017-12-12 | 东风商用车有限公司 | 一种汽车紧急制动危险警报系统及其控制方法 |
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CN108572669B (zh) * | 2018-05-29 | 2023-11-14 | 中土智能科技(广州)有限公司 | 一种水泵智能控制器 |
CN109240357A (zh) * | 2018-11-26 | 2019-01-18 | 淮南万泰电子股份有限公司 | 一种输出本安型水位控制器 |
CN109240357B (zh) * | 2018-11-26 | 2024-02-27 | 淮南万泰电子股份有限公司 | 一种输出本安型水位控制器 |
CN109826784A (zh) * | 2019-03-26 | 2019-05-31 | 任若琛 | 注水式排水泵自动检测装置 |
CN109826784B (zh) * | 2019-03-26 | 2024-05-10 | 任若琛 | 注水式排水泵自动检测装置 |
CN110209099A (zh) * | 2019-06-28 | 2019-09-06 | 苏州优德通力科技有限公司 | 一种检测水管中水流的控制系统 |
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CN103676988A (zh) | 2014-03-26 |
CN103676988B (zh) | 2016-09-28 |
JP2016513194A (ja) | 2016-05-12 |
TW201535082A (zh) | 2015-09-16 |
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