WO2012003788A1 - 一种水泵控制电路及水泵控制方法 - Google Patents

一种水泵控制电路及水泵控制方法 Download PDF

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WO2012003788A1
WO2012003788A1 PCT/CN2011/076800 CN2011076800W WO2012003788A1 WO 2012003788 A1 WO2012003788 A1 WO 2012003788A1 CN 2011076800 W CN2011076800 W CN 2011076800W WO 2012003788 A1 WO2012003788 A1 WO 2012003788A1
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water
water pump
electrically connected
pump control
central controller
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PCT/CN2011/076800
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French (fr)
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高上前
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漳州灿坤实业有限公司
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Publication of WO2012003788A1 publication Critical patent/WO2012003788A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine

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  • the invention relates to a water pump control circuit, in particular to a circuit device capable of accurately controlling the water discharge amount of a water pump through a thyristor.
  • a relay is an electronic control device that is usually used in automatic control circuits. It is actually an "automatic switch” that uses a small current to control a large current. It is automatically adjusted, safely protected, and converted in the circuit.
  • the functions of circuits, etc. are widely used in power protection, automation, remote control, measurement, communication, with the advantages of fast action, stable operation, long service life and small volume.
  • the traditional mechanical relay can not achieve precise control, especially the water can not be used for accurate control of the water pump, resulting in inconvenient user use, often more water or less water.
  • Conventional two-terminal mechanical relays may reduce their service life under current.
  • the present invention provides a water pump control circuit that can accurately control the water output of a water pump by a thyristor, which overcomes the deficiencies in the background art.
  • the invention connects a water pump, a power source and a voltage Vcc, which comprises:
  • a central controller having an output capable of outputting a high level signal
  • triode having a base, an emitter and a collector, the base being electrically connected to an output of the central controller, the emitter being grounded;
  • a thyristor having an anode, a cathode and a trigger pole, wherein the anode is electrically connected to the positive pole of the power source, and the water pump is electrically connected between the cathode and the negative pole of the power source;
  • An optical coupler having two input ends and two output ends, one input terminal is electrically connected to the voltage Vcc, and the other input end is electrically connected to the collector of the triode, the one output end is electrically connected to the positive pole of the power supply, and the other output end is electrically connected.
  • Thyristor trigger.
  • the output of the central controller and the base of the transistor are electrically connected to the resistor R1; the voltage Vcc and an input of the optocoupler are electrically connected to the resistor R2; the other output of the optocoupler is
  • the silicon control trigger electrode is electrically connected to the resistor R3; the central controller output terminal outputs a pulse signal whose duty ratio can be adjusted.
  • Step 1 the central controller determines whether the user needs to pump water (by the pumping water to open the key is pressed or by determining whether the water level in the water tank is lower than the predetermined water level), if yes, proceed to step 2, otherwise step 5;
  • Step 2 The central controller queries the amount of residual water in the water tank through the sensor;
  • Step 3 The central controller receives the residual water quantity data, and calculates the water supply quantity of the water pump;
  • Step 4 calculating the frequency of the pulse signal according to the water supply amount of the pump and outputting the pulse signal of the frequency, and then performing step 1;
  • step 5 the central controller outputs a low level, and then performs step 1.
  • the step 1 is performed by whether the water pumping key is pressed or by determining whether the water level in the water tank sent by the sensor is lower than a predetermined water level.
  • the central controller output outputs a pulse signal that can be adjusted by the duty cycle, which is convenient for the user to control the central controller.
  • FIG. 1 is a circuit schematic diagram of an embodiment of the present invention.
  • FIG. 2 is a flow chart of a program according to an embodiment of the present invention.
  • central controller MCU--1 central controller MCU--1, resistor R1-2, triode-3, resistor R2-4, optocoupler-5, resistor R3-6, thyristor-7, pump-8, power supply AC- -9.
  • the water pump control circuit of the present invention comprises: a central controller MCU1, a triode 3, an optocoupler 5, a thyristor 7, and an output end of the MCU1 is connected to the triode 3 through a resistor R1.
  • the base electrode is such that the base of the transistor 3 is forward biased, the emitter of the transistor 3 is grounded, and the collector of the transistor 3 is connected to one input of the optocoupler 5 and the other input of the optocoupler 5 Connected to a voltage Vcc through a resistor R2, such that the collector of the transistor 3 is reverse biased, the anode of the power source AC9 is connected to an output of the optocoupler 5, and the other output of the optocoupler 5 is coupled via a resistor R3.
  • the trigger current of the thyristor 7 is provided, the anode of the thyristor 7 is connected to the anode of the power source AC9, and the cathode of the thyristor 7 is connected in series to the cathode of the power source AC9 through the PUMP8.
  • the MCU1 When the MCU1 outputs a high level, the transistor 3 is turned on at this time, the input end of the optocoupler 5 is triggered, the thyristor 7 is triggered to conduct, the water pump 8 starts pumping, and the function of the thyristor 7 is equivalent to an electronic switch, The water pump 8 realizes high-frequency on-off control; when the MCU1 outputs a low level, the triode 3 is not turned on, the input end of the optocoupler 5 cannot be triggered, and the thyristor 7 cannot be triggered to conduct, the water pump 8 stop pumping. Moreover, the MCU1 can output a pulse signal with an adjustable duty cycle according to different water output requirements.
  • the MCU1 if the system does not need water, MCU1 outputs a low level, then the transistor 3 is not turned on, the input of the optocoupler 5 cannot be triggered, and the thyristor 7 cannot be triggered to conduct, the water pump 8 Stop pumping; if the system needs water, check the water output of the pump 8, and then calculate the water output of the pump 8, and then according to different calculation values, the MCU outputs pulse signals of different frequencies, according to the pulse signals of these different frequencies.
  • the transistor 3 is turned on, the input end of the optocoupler 5 is triggered, and the thyristor 7 is also triggered to conduct, so that the water pump 8 is controlled by the thyristor. Therefore, according to the low level and high level of the MCU output, the water output is turned off and on, and the different water output is controlled according to the pulse signals of different frequencies output by the MCU.
  • Step 1 The central controller determines whether the user needs to pump water (by whether the pumping key is pressed or By determining whether the water level in the water tank sent by the sensor is lower than the predetermined water level), if yes, proceed to step 2, otherwise perform step 5; in step 2, the central controller queries the residual water amount in the water tank through the sensor; step 3, the central controller receives The residual water quantity data, and calculating the water supply quantity of the water pump; step 4, calculating the frequency of the pulse signal according to the water supply quantity of the water pump and outputting the pulse signal of the frequency, and then performing step 1; step 5, the central controller outputs a low level, and then performing the steps 1.
  • the utility model relates to a water pump control circuit, which can control the water pump through the thyristor and the optical coupler to avoid the control current directly acting on the thyristor, can improve the sensitivity, reduce the possibility of interference, realize the precise water discharge control, realize the control convenience, and can extend the water pump. Service life and simple construction.

Abstract

公开了一种水泵控制电路及水泵控制方法，该电路连接水泵（8）、电源（9）和电压Vcc，其包括：中央控制器（1），其具有能够输出高电平信号的输出端；三极管，其具有基极、发射极和集电极，基极电接中央控制器（1）的输出端，发射极接地；可控硅(7），其具有阳极、阴极和触发极，阳极电接电源（9）正极，阴极和电源（9）负极之间电接水泵（8）；光耦合器（5），其具有两个输入端和两个输出端，一个输入端电接电压Vcc，另一个输入端电接三极管（3）的集电极，一个输出端电接电源（9）正极，另一个输出端电接可控硅（7）触发极。通过可控硅（7）和光耦合器（5）配合控制水泵（8），避免控制电流直接作用可控硅（7），具有提高灵敏度，降低干扰性，实现精准出水控制和控制便利性，延长水泵（8）使用寿命，构造简单的优点。

Description

[根据细则37.2由ISA制定的发明名称]　一种水泵控制电路及水泵控制方法 技术领域
本发明涉及一种水泵控制电路，尤其是一种可以通过可控硅对水泵的出水量进行精准控制的电路装置。
背景技术
继电器是一种电子控制器件，通常应用于自动控制电路中，实际上是用较小的电流去控制较大电流的一种“自动开关”，固在电路中起着自动调节、安全保护、转换电路等作用，广泛应用于电力保护，自动化，遥控，测量，通信，具有动作快，工作稳定，使用寿命长，体积小的优点。然而传统的机械继电器无法实现精准控制，尤其是无法用于水泵的水量精准控制，造成用户使用不便，经常出现多出水或少出水现象。传统二端机械继电器在电流作用下可能会降低使用寿命。
发明内容
本发明提供了一种可以通过可控硅对水泵的出水量进行精确控制的水泵控制电路，其克服了背景技术中的不足。
本发明解决其技术问题的所采用的技术方案是：
本发明连接水泵、电源和电压Vcc，它包括：
一中央控制器，它具有一能够输出高电平信号的输出端；
一三极管，它具有一基极、一发射极和一集电极，所述基极电接中央控制器的输出端，所述发射极接地；
一可控硅，它具有一阳极、一阴极和一触发极，所述阳极电接电源正极，所述阴极和电源负极之间电接水泵;及
一光耦合器，它具有二输入端和二输出端，一输入端电接电压Vcc，另一输入端电接三极管的集电极，所述一输出端电接电源正极，另一输出端电接可控硅触发极。
所述中央控制器的输出端和三极管的基极之间电接电阻R1；所述电压Vcc和光耦合器的一输入端之间电接电阻R2；所述光耦合器的另一输出端和可控硅触发极之间电接电阻R3；所述中央控制器输出端输出占空比能够调节的脉冲信号。
本发明的又一目的是提供一种水泵控制电路的水泵控制方法，包括以下步骤：
步骤1,中央控制器判断用户是否需要抽水（通过抽水开关键是否被按压或通过判断传感器传来的水箱中水位是否低于预定水位），如果是则执行步骤2，否则执行步骤5；
步骤2，中央控制器通过传感器查询水箱中的残留水量；
步骤3，中央控制器接收该残留水量数据，并计算水泵供水水量；
步骤4，根据水泵供水水量计算脉冲信号的频率并输出该频率的脉冲信号，然后执行步骤1；
步骤5，中央控制器输出低电平，然后执行步骤1。
所述的步骤1通过抽水开关键是否被按压或通过判断传感器传来的水箱中水位是否低于预定水位。
本技术方案与背景技术相比，它具有如下优点：
1.通过可控硅和光耦合器配合控制水泵，避免控制电流直接作用可控硅，能够提高灵敏度，降低干扰可能性，实现精准出水控制，实现控制便利性，能够延长水泵使用寿命，构造简单；
2.中央控制器的输出端和三极管的基极之间电接电阻R1，电压Vcc和光耦合器的一输入端之间电接电阻R2，光耦合器的另一输出端和可控硅触发极之间电接电阻R3，提高电路电流稳定性，延长使用寿命；
3.中央控制器输出端输出占空比能够调节的脉冲信号，便于用户控制中央控制器。
附图说明
下面结合附图和实施例对本发明作进一步说明。
图1为本发明一实施例的电路原理图。
图2为本发明一实施例的程序流程图。
主要标号说明：中央控制器MCU--1，电阻R1—2；三极管—3；电阻R2—4；光耦合器—5；电阻R3—6；可控硅—7；水泵—8；电源AC--9。
具体实施方式
实施例，请参阅图1，本发明水泵控制电路包括：中央控制器MCU1，三极管3，光耦合器5，可控硅7，所述的MCU1的输出端通过电阻R1连接于所述的三极管3的基电极，使得三极管3的基极正向偏置，三极管3的发射极接地，而三极管3的集电极连接所述的光耦合器5的一输入端、光耦合器5的另一输入端通过电阻R2连接于一电压Vcc，使得三极管3的集电极反向偏置，电源AC9的正极连接所述的光耦合器5的一输出端、光耦合器5的另一输出端通过电阻R3联接到所述的可控硅7的触发极，提供可控硅7的触发电流，可控硅7的阳极连接到电源AC9的正极，可控硅7的阴极通过PUMP8串联连接于电源AC9的负极。
当MCU1输出高电平时使得此时三极管3导通，光耦合器5输入端被触发，可控硅7被触发导通，水泵8开始抽水，可控硅7的作用相当于一个电子开关，对水泵8实现高频率的通断控制；而当MCU1输出低电平的时候，三极管3不导通，光耦合器5的输入端无法被触发，可控硅7也就无法被触发导通，水泵8停止抽水。而且MCU1可以根据不同的出水量的要求输出占空比可调的脉冲信号。
参阅图2，如果系统不需要出水，则MCU1输出低电平，那么三极管3就不被导通，光耦合器5的输入端无法被触发，可控硅7也就无法被触发导通，水泵8停止抽水；如果系统需要出水，则进行水泵8的出水量查询，再进行水泵8的出水量计算，然后根据不同的计算值，MCU输出不同的频率的脉冲信号，根据这些不同频率的脉冲信号，三极管3导通，光耦合器5输入端被触发，可控硅7也被触发导通，这样通过可控硅来对水泵8进行出水量的控制。所以根据MCU输出的低电平，高电平来调节出水量的关和开，并根据MCU输出的不同频率的脉冲信号来控制不同的出水量。
为了使审查员进一步了解本具体实施例，下面列举一个中央控制器控制步骤的例子，请查阅图2，它包括：步骤1,中央控制器判断用户是否需要抽水（通过抽水开关键是否被按压或通过判断传感器传来的水箱中水位是否低于预定水位），如果是则执行步骤2，否则执行步骤5；步骤2，中央控制器通过传感器查询水箱中的残留水量；步骤3，中央控制器接收该残留水量数据，并计算水泵供水水量；步骤4，根据水泵供水水量计算脉冲信号的频率并输出该频率的脉冲信号，然后执行步骤1；步骤5，中央控制器输出低电平，然后执行步骤1。
以上所述，仅为本发明较佳实施例而已，故不能依此限定本发明实施的范围，即依本发明专利范围及说明书内容所作的等效变化与修饰，皆应仍属本发明涵盖的范围内。
工业实用性
本发明一种水泵控制电路，通过可控硅和光耦合器配合控制水泵，避免控制电流直接作用可控硅，能够提高灵敏度，降低干扰可能性，实现精准出水控制，实现控制便利性，能够延长水泵使用寿命，构造简单。

Claims (6)

  1. 一种水泵控制电路，它连接水泵、电源和电压Vcc，其特征在于：它包括：
    一中央控制器，它具有一能够输出高电平信号的输出端；
    一三极管，它具有一基极、一发射极和一集电极，所述基极电接中央控制器的输出端，所述发射极接地；
    一可控硅，它具有一阳极、一阴极和一触发极，所述阳极电接电源正极，所述阴极和电源负极之间电接水泵;及
    一光耦合器，它具有二输入端和二输出端，一输入端电接电压Vcc，另一输入端电接三极管的集电极，所述一输出端电接电源正极，另一输出端电接可控硅触发极。
  2. 根据权利要求1所述的一种水泵控制电路，其特征在于：所述中央控制器的输出端和三极管的基极之间电接电阻R1。
  3. 根据权利要求1所述的一种水泵控制电路，其特征在于：所述电压Vcc和光耦合器的一输入端之间电接电阻R2。
  4. 根据权利要求1所述的一种水泵控制电路，其特征在于：所述光耦合器的另一输出端和可控硅触发极之间电接电阻R3。
  5. 根据权利要求1所述的一种水泵控制电路的水泵控制方法，其特征在于：包括以下步骤：
    步骤1,中央控制器判断用户是否需要抽水（通过抽水开关键是否被按压或通过判断传感器传来的水箱中水位是否低于预定水位），如果是则执行步骤2，否则执行步骤5；
    步骤2，中央控制器通过传感器查询水箱中的残留水量；
    步骤3，中央控制器接收该残留水量数据，并计算水泵供水水量；
    步骤4，根据水泵供水水量计算脉冲信号的频率并输出该频率的脉冲信号，然后执行步骤1；
    步骤5，中央控制器输出低电平，然后执行步骤1。
  6. 根据权利要求5所述的一种水泵控制方法，其特征在于：所述的步骤1通过抽水开关键是否被按压或通过判断传感器传来的水箱中水位是否低于预定水位。
PCT/CN2011/076800 2010-07-08 2011-07-04 一种水泵控制电路及水泵控制方法 WO2012003788A1 (zh)

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