CN102562548B - Single-phase alternating-current frequency-conversion constant-voltage water pump - Google Patents

Single-phase alternating-current frequency-conversion constant-voltage water pump Download PDF

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CN102562548B
CN102562548B CN201010594895.8A CN201010594895A CN102562548B CN 102562548 B CN102562548 B CN 102562548B CN 201010594895 A CN201010594895 A CN 201010594895A CN 102562548 B CN102562548 B CN 102562548B
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circuit
manifold
pin
connected
dsc
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CN201010594895.8A
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CN102562548A (en
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赵军彪
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台州神能电器有限公司
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Abstract

单相交流变频恒压水泵,包括单相电机、水泵、压力传感器、流量传感器和控制系统,其特征在于所述的控制系统由DSC、按键电路、整流电源电路、显示电路、信号隔离电路、功率输出电路、过流保护电路和控制代码所组成,所述按键电路及显示电路、压力传感器、流量传感器和信号隔离电路与DSC连接,电源与整流电源电路连接,整流电源电路与所有电路连接,水泵有进水口和出水口,压力传感器和流量传感器安装在出水口上。 Single-phase AC constant pressure pump, comprising a single-phase motors, pumps, pressure sensors, flow rate sensor and a control system, said control system characterized by a DSC, a key circuit, a rectifier power supply circuit, a display circuit, a signal isolation circuit, a power an output circuit, overcurrent protection circuit, and a control code composed of a key circuit and display circuit, a pressure sensor, a flow sensor and a signal isolation circuit connected to the DSC, the power supply circuit is connected to the rectifier, the rectifier circuit is connected to all the power supply circuit, the pump a water inlet and a water outlet, a pressure sensor and a flow sensor mounted on the outlet.

Description

单相交流变频恒压水泵 Single-phase AC constant pressure pumps

技术领域 FIELD

[0001] 本发明涉及单相交流变频恒压水泵,主要适用于对供水稳定度要求较高的家庭、小型单元楼、小型酒店等场所的管道供水及供水控制技术。 [0001] The present invention relates to a single-phase AC constant pressure pump, mainly suitable for water pipes of water supply and stability requirement of high water home, small building unit, hotels and other places small control technology.

背景技术 Background technique

[0002] 单相交流电源水泵以其构造简单、成本低、技术成熟度高等特点,在工业和民用有着极其广泛的用途。 [0002] single-phase AC power supply pumps for its simple structure, low cost, high technical maturity, etc., in industrial and civilian has an extremely wide range of uses. 近年来,随着生活水平的提高,人们环保意识的增强,以及不断加大的电力供给压力,个人及社会都对各类电器的能耗提出更高的要求,以往主要依靠压力开关来控制的自动单相水泵因其不节能和对管道冲击大而越来越无法满足用户要求。 In recent years, with the improvement of living standards, enhance the awareness of environmental protection, as well as the power supply pressure, increasing personal and community have put forward higher requirements for various types of electrical energy, in the past mainly rely on a pressure switch control automatic single-phase pumps because of their impact on the pipeline are not energy-efficient and large, increasingly unable to meet user requirements. 单相节能恒压水泵能够达到以上目的,提高用户用水的舒适性和延长管道的使用寿命,但目前市场上并未提供单相节能恒压水泵。 Single-phase energy-saving constant pressure water pump to achieve the above purpose, to improve the life of comfort and extend the pipeline of water users, but does not provide a single-phase energy-saving constant pressure water pump on the market.

发明内容 SUMMARY

[0003] 本发明的目的是为了克服已有技术存在的缺点,提供一种控制性能高,供水压力稳定性好,对管道冲击小,并且节能的单相交流变频恒压水泵。 [0003] The object of the present invention is to overcome the disadvantages of the prior art, there is provided a method of controlling a high performance, good water pressure stability, small impact on the pipeline, and the single-phase AC energy constant pressure pump.

[0004] 本发明单相交流变频恒压水泵的技术方案是:包括单相电机、水泵、压力传感器、流量传感器和控制系统,其特征在于所述的控制系统由DSC、按键电路、整流电源电路、显示电路、信号隔离电路、功率输出电路、过流保护电路和控制代码所组成,所述按键电路及显示电路、压力传感器、流量传感器和信号隔离电路与DSC连接,电源与整流电源电路连接,整流电源电路与所有电路连接,水泵有进水口和出水口,压力传感器和流量传感器安装在出水口上。 [0004] Single-phase AC constant pressure pump of the present invention is a technical solution: a single-phase motors, pumps, pressure sensors, flow rate sensor and a control system, said control system characterized by a DSC, a key circuit, a power rectifier circuit , a display circuit, a signal isolation circuit, power output circuit, overcurrent protection circuit, and a control code composed of a key circuit and display circuit, a pressure sensor, a flow sensor and a signal isolation circuit connected to the DSC, the power supply circuit connected to the rectifier, a rectifying circuit connected to all the power supply circuit, with a pump inlet and a water outlet, a pressure sensor and a flow sensor mounted on the outlet.

[0005] 本发明公开了一种单相交流变频恒压水泵,主要包括单相电机带动的水泵、压力传感器、流量传感器和控制系统,所述的控制系统由DSC (数字信号控制器)、按键、整流电源电路、显示电路、信号隔离电路、功率输出电路、过流保护电路和控制代码所组成,所述按键及显示电路、压力传感器、流量传感器和信号隔离电路与DSC连接,电源与整流电源电路连接,整流电源电路与所有电路连接(指整流电源电路与显示电路、信号隔离电路、功率输出电路、过流保护电路和DSC连接)。 [0005] The present invention discloses a single-phase AC constant pressure pump, mainly comprising a single-phase motor driven pump, a pressure sensor, a flow sensor and control system, said control system by the DSC (digital signal controller), a key , rectifier power supply circuit, a display circuit, a signal isolation circuit, power output circuit, overcurrent protection circuit, and a control code composed of keys and the display circuit, a pressure sensor, a flow sensor and a signal isolation circuit connected to the DSC, the rectification power supply circuit, a rectifying circuit connected to all the power supply circuit (power supply circuit and a display means rectifying circuit, a signal isolation, power output circuit, overcurrent protection circuit is connected and DSC). 本产品具有以下优点: This product has the following advantages:

[0006] 一、采用机电一体化结构,使用户免去了安装的麻烦。 [0006] First, using electromechanical integrated structure, so that the user eliminates the trouble to install.

[0007] 二、比三相变频恒压水泵多用了一个流量传感器,可更准确的判断用户的用水状态,实现更可靠的控制。 [0007] Second, the ratio of the three-phase constant pressure pump with a multi-flow sensor, the user can more accurately determine the state of water, more reliable control.

[0008] 三、使用高性能带DSP功能的DSC产生高精度的矢量脉宽信号。 [0008] Third, the use of high-performance DSP are produced with high precision DSC vector pulse width signal.

[0009] 四、本发明可适用于所有单相水泵类型,不需要设定复杂的主副绕组匝数比。 [0009] Fourth, the present invention is applicable to all types of single-phase pumps, it does not require complicated setting than the primary and secondary winding turns.

[0010] 五、恒定压力、无冲击、无水锤效应的供水可有效保护供水泵流内的管道、阀门和用水设备。 [0010] Fifth, the constant pressure, no impact, water water hammer effect can effectively protect pipes, valves and pumps for water flow in the device.

附图说明 BRIEF DESCRIPTION

[0011] 图1是本发明单相交流变频恒压水泵结构示意图; [0011] FIG. 1 is a schematic single phase structure of the present invention, the pump constant pressure;

[0012] 图2是本发明单相交流变频恒压水泵原理方框图; [0012] FIG. 2 is a block diagram showing a single-phase AC constant pressure pump principles of the present invention;

[0013] 图3是按键电路、显示电路和DSC控制电路示意图; [0013] FIG. 3 is a key circuit, a display circuit schematic of a control circuit and a DSC;

[0014] 图4是信号隔离电路、功率输出电路、整流电源电路、过流保护电路示意图; [0014] FIG 4 is a signal isolation circuit, the power output circuit, a rectifier power supply circuit, a circuit diagram of the overcurrent protection;

[0015] 图5是LED显示电路; [0015] FIG. 5 is a LED display circuit;

[0016] 图6是DSC (数字信号控制器)电路; [0016] FIG. 6 is a DSC (Digital Signal Controller) circuit;

[0017] 图7是输出驱动电路; [0017] FIG. 7 is an output driving circuit;

[0018] 图8是信号隔离电路; [0018] FIG 8 is a signal isolation circuit;

[0019] 图9是功率输出电路; [0019] FIG. 9 is a power output circuit;

[0020] 图10是整流电源电路; [0020] FIG. 10 is a rectifying power supply circuit;

[0021 ] 图11是过流保护电路。 [0021] FIG. 11 is an overcurrent protection circuit.

具体实施方式 Detailed ways

[0022] 本发明涉及一种单相交流变频恒压水泵,如图1一图11所示,包括单相电机1、水泵2、压力传感器5、流量传感器6和控制系统,其特征在于所述的控制系统由DSC、按键电路、整流电源电路9、显示电路7、信号隔离电路81、功率输出电路82、过流保护电路83和控制代码所组成,所述按键电路及显示电路7、压力传感器5、流量传感器6和信号隔离电路81与DSC连接,电源与整流电源电路9连接,整流电源电路与所有电路连接,水泵有进水口3和出水口4,压力传感器5和流量传感器6安装在出水口4上。 [0022] The present invention relates to a single-phase AC constant pressure pump, as shown in FIG. 11 a, including 1, 2 pumps, a pressure sensor 5, a flow sensor 6 and a control system of single-phase motors, characterized in that said the control system consists of a DSC, a key circuit, a rectifying power supply circuit 9, a display circuit 7, a signal isolation circuit 81, power output circuit 82, overcurrent protection circuit 83 and a control code composed of a key circuit and a display circuit 7, a pressure sensor 5, a flow sensor 6 and a signal isolation circuit 81 and the DSC is connected to power supply and the rectifying power supply circuit 9 is connected to a rectifying power supply circuit and all circuits connected to the water pump water inlet 3 and outlet 4, the pressure sensor 5 and a flow sensor 6 is mounted on the 4 on the outlet.

[0023] 本发明单相交流变频恒压水泵,所述控制系统的显示电路7中有数码管U4显示实时压力和设定压力,由按键电路来设定需要控制的压力,4位8段LED数码管U4由第四集成块IC4和第六集成块IC6驱动,其信号输入端口第四集成块IC4的第14管脚连接到DSC的第11管脚,第四集成块IC4的第11管脚连接到DSC的第14管脚,第四集成块IC4的第12管脚连接到DSC的第15管脚,由第51、第50、第52、第53、第54电阻R51、R50、R52、R53、R54和第1、第2、第3按键S1、S2、S3组成的按键电路连接到DSC的第6管脚。 [0023] Single-phase AC constant pressure pump according to the present invention, the display control circuitry 7 of U4 have digital display real-time pressure and the set pressure, the pressure is set by the key circuit to be controlled, four 8-segment LED U4 driven by the fourth digital manifold IC4 and IC6 sixth manifold, which signal input port of the fourth manifold 14th pin IC4 is connected to the pin of the DSC 11, a fourth manifold 11 of pin IC4 DSC is connected to the 14th pin, the fourth pin 12 of IC4 manifold connected to the DSC 15 of the pin 51 by the first, 50th, 52nd, 53rd, 54th resistor R51, R50, R52, key circuit R53, R54, and first, second, and third keys S1, S2, S3 are connected to the DSC composed of 6 pins. 所述控制系统由含有DSP功能的DSC通过代码产生的两个PWM信号由PWMlL的第26管脚和PWM2L的第24管脚输出,由第一集成块ICl和第八集成块IC8组成的信号隔离电路81隔离后连接到Al集成块UlA的第I管脚和B集成块UlB的第3管脚非门74HC04 ;反相后分别由Al集成块UlA的第2管脚和B集成块UlB的第4管脚输出,与第七集成块IC7、第二集成块IC2的第1、第2管脚交叉连接,第二集成块IC2、第七集成块IC7的第19、第12管脚分别驱动4个IGBT ;第I三极管、第2三极管、第3三极管、第4三极管Ql、Q2、Q3、Q4由第I三极管Ql的E极连接到电机的U端,由第3三极管Q3的E极连接到V端。 Isolating the control signal system is composed of two PWM signals containing DSC DSP function code is produced by the first output pin 26 of the pin 24 and the PWM2L PWMlL by the first and eighth ICl Manifold Manifold composition IC8 after isolation circuit 81 is connected to the manifold Al UlA pin of I and B manifold UlB third pin of the NAND gate 74HC04; UlB the inverted respectively by the Al manifold UlA pin 2 and the first manifold of B output pin 4, with the seventh IC7 manifold, a second manifold IC2 first and second cross-connect pin, the second integrated block IC2, the first manifold 19 IC7 seventh, the drive pin 12, respectively 4 th the IGBT; I, transistor, the second transistor, a third transistor, a fourth transistor Ql, Q2, Q3, Q4 by the first I transistor Ql is E is connected to the terminal U of the motor, by the third transistor Q3 is E is connected to V terminal. 所述第二集成块、第七集成块IC2、IC7的内部放大器与第33、第34电阻R33、R34、第28电容C28、第18、第25、第27、第16、第22、第23电阻R18、R25、R27、R16、R22、R23共同组成过流保护电路;第二集成块IC2、第七集成块IC7的保护输出端第3管脚连接到隔离第三集成块IC3的2脚,将信号隔离后由第三集成块IC3的第4管脚输出连接到DSC的第16管脚,低电平时保护起动。 The second manifold, the manifold internal seventh amplifier IC2, IC7 and 33, resistor 34 R33, R34, the C28 capacitor 28, 18, 25, 27, 16, 22, 23, resistors R18, R25, R27, R16, R22, R23 together form an overcurrent protection circuit; a second integrated block IC2, IC7 seventh output terminal protected manifold third pin is connected to a third manifold spacer pin 2 of IC3 after the connection by the third signal isolation manifold output pin 4 of IC3 to DSC of 16 pin secured launching low. 所述流量传感器6的一端连接到地端,另一端连接到DSC的第5管脚,压力传感器5的3个端口一个连接到5V电源,另一个连接到地端,再另一个连接到DSC的第4管脚。 One end of the flow sensor 6 is connected to ground, and the other end connected to the fifth terminal of the DSC, the pressure sensor 3 is connected to port 5 of a 5V power supply, the other terminal connected to ground, then the other is connected to the DSC 4 pin.

[0024] 单相交流变频恒压水泵控制工作过程: [0024] Single-phase AC constant pressure pump control work process:

[0025] 图1中压力传感器5和流量传感器6安装在水泵2的出水口4,用于采集压力与流量信号,压力传感器5和流量传感器6通过电线与控制系统线路板连接,将压力与流量电信号传入控制系统线路板,控制系统线路板和电源与水泵电机I连接。 [0025] In the pressure sensor 1 in FIG. 5 and a flow sensor 6 is mounted in the pump outlet 2 to 4, for acquiring pressure and flow signals, the pressure sensor 5 and a flow sensor 6 are connected by a wire circuit board with the control system, the pressure and flow incoming electrical control system board, the control board and a power supply system with a pump motor connected to I.

[0026] 由图2、图3可见,压力传感器5和流量传感器6将实时信号专递到DSC (数字信号控制器)后,DSC通过特定的程序对信号做出反应,这一反应生成的2个脉宽调制信号,经信号隔离电路81隔离后送到功率输出电路82,功率输出电路82将电压信号放大成功率信号,合成变频正弦电压后用于驱动水泵电机I运转。 [0026] FIG. 2, FIG. 3, the pressure sensor 5 and a flow sensor 6 to the real-time signal courier DSC (digital signal controller) after, a DSC signal to respond to a specific program, the reaction of 2 pulse width modulated signal, the signal after isolation circuit 81 to the isolated power output circuit 82, power output circuit 82 amplifies the voltage signal success rate signal, the synthesized sinusoidal voltage for driving the inverter I operate the pump motor. 其控制原理为:当用户用水量加大时,流量传感器6和压力传感器5将这一变化感知后传递到DSC,DSC将提高输出频率,使水泵2以更快的速度运转,提高供水量以保持压力恒定。 The control principle is: when the user to increase the water flow sensor and a pressure sensor 6 after the transmission 5 to the perceived change in DSC, DSC will increase the output frequency, the pump 2 operating at a faster rate, in order to improve the water supply keep the pressure constant. 当用户用水量减少时,流量传感器6和压力传感器5将这一变化传递给DSC,DSC将降低输出频率,使水泵2以低速运转,减少供水量,使压力保持恒定。 When water users reduce the flow sensor 6 and a pressure sensor 5 is transmitted to the change in DSC, DSC will reduce the output frequency, the pump 2 at low speed, to reduce the amount of water, pressure was kept constant. 当用户不再用水时,流量传感器和压力传感器将这一变化传递给DSC,DSC将关闭输出频率,停止水泵运转。 When the user is no longer water flow sensor and a pressure sensor of this change is transmitted to DSC, DSC will turn off the output frequency, stop the pump operation.

[0027] 图3(可分为图5和图6)为按键显示电路和DSC部分原理图,根据特定程序由DSC(数字信号控制器)产生的显示信号由DSC的第14、第15、第11管脚输出,DSC的第14管脚连接到第四集成块IC4的第11管脚,DSC的第15管脚连接到第四集成块IC4的第12管脚,DSC的第11管脚连接到第四集成块IC4的第14管脚。 [0027] FIG. 3 (divided into FIGS. 5 and 6), and DSC is a button to display partial schematic circuit diagram showing a signal generated by a DSC (Digital Signal Controller) according to a specific program by the second DSC 14, the first 15, output pin 11, the DSC 14 is connected to a fourth pin of the pin 11 of IC4 of the manifold, the DSC is connected to a fourth pin 15 to pin 12 of IC4 of the manifold, a first pin 11 connecting the DSC the fourth manifold to the 14th pin of IC4. 压力传感器的第I管脚连接到+5V,第2管脚连接到DSC的第4管脚,第3管脚连接到地端。 I first pin is connected to the pressure sensor + 5V, the second pin is connected to the fourth terminal of the DSC, the third pin is connected to ground. 流量传感器6的第I管脚连接到DSC的第5管脚,第2管脚连接到地端,按键信号连接到第6管脚,整流电源电路9和电流信号分别连接到DSC的第2、3管脚,DSC的第26和第24管脚输出一对PWM信号。 I of the flow sensor 6 is connected to pin 5 of the DSC pin, the second pin is connected to ground, a key signal is connected to pin 6, and 9 signal current rectifier connected to the power supply circuit of the second DSC, 3 pins, DSC 26 and the first pin 24 outputs a PWM signal.

[0028] 图4 (可分为图7、图8、图9、图10和图11)为信号隔离电路、功率输出电路、整流电源电路、过流保护电路的电路原理图,由DSC输出一对PWM信号分别连接到光耦第一集成块ICl和第八集成块IC8的第2管脚,第I集成块ICl和第八集成块IC8将信号隔离后由各自的第6管脚输出,经反相器U1A、UlB反相后交叉连接到第二集成块IC2和第七集成块IC7的第1、第2管脚,第二集成块IC2和第七集成块IC7为功率驱动1C,将PWM信号放大后驱动IGBT、第I三极管Q1、第2三极管Q2、第3三极管Q3、第4三极管Q4。 [0028] FIG. 4 (divided into FIGS. 7, 8, 9, 10 and 11) is a circuit diagram showing a signal isolation circuit, the power output circuit, a rectifier power supply circuit, overcurrent protection circuit, an output from the DSC PWM signal are respectively connected to a first manifold optocoupler IC8 ICl and second manifold eighth pin, the first and eighth I ICl manifold IC8 after signal isolation manifold by a respective output pin 6, by UlA inverter, the inverted cross UlB manifold connected to the second and seventh IC2 first manifold, a second pin IC7, and the second manifold block IC2 driving power for the seventh IC7 manifold 1C, the PWM after the drive signal amplification IGBT, I, transistor Q1, a second transistor Q2, a third transistor Q3, a fourth transistor Q4. 在第I三极管Ql和第3三极管Q3的E端形成正弦电压,驱动水泵电机I运转。 Sinusoidal voltage E is formed at the end of the first transistor Ql and I 3 of the transistor Q3, the driving operation of the I pump motor. 在第4三极管Q4的E端连接有电流取样第33电阻R33,将电流取样后输入第七集成块IC7的第6管脚由其内部放大器放大后输入第七集成块IC7的第9管脚,第9管脚内部放大器连接成比较器,当电流过大时,比较器由第3管脚输出低电频驱动光耦第三集成块IC3,将过流信号隔离后输入到DSC。 In the fourth terminal E of transistor Q4 is connected to a current sampling resistor 33, R33, a seventh input of IC7 manifold pin 6 therefrom after the inner seventh input amplifier IC7 manifold 9 after the current sampling pin, 9-pin connector into the internal amplifier of the comparator, when the current is too large, the comparator output by the third low-frequency driving pin optocoupler IC3 third manifold, after the DSC is input to the overcurrent signal isolation.

[0029] 本方案具有以下优点: [0029] The present embodiment has the following advantages:

[0030] 1、采用机电一体化结构,使用户免去了安装的麻烦。 [0030] 1, with electromechanical integrated structure, so that the user eliminates the trouble to install.

[0031] 2、比三相变频恒压水泵多用了一个流量传感器,可更准确的判断用户的用水状态,实现更可靠的控制。 [0031] 2, more than three-phase constant pressure pump with a multi-flow sensor, the user can more accurately determine the state of water, more reliable control.

[0032] 3、使用高性能带DSP功能的DSC产生高精度的矢量脉宽信号。 [0032] 3, a high-performance DSP are produced with high precision DSC vector pulse width signal.

[0033] 4、本发明可适用于所有单相水泵类型,不需要设定复杂的主副绕组匝数比。 [0033] 4, the present invention is applicable to all types of single-phase pumps, it does not require complicated setting than the primary and secondary winding turns.

[0034] 5、恒定压力、无冲击、无水锤效应的供水可有效保护供水泵流内的管道、阀门和用水设备。 [0034] 5, a constant pressure, no impact, water water hammer effect can effectively protect pipes, valves and pumps for water flow in the device.

Claims (2)

1.单相交流变频恒压水泵,包括单相电机(I)、水泵(2)、压力传感器(5)、流量传感器(6)和控制系统,其特征在于所述的控制系统由DSC、按键电路、整流电源电路(9)、显示电路(7)、信号隔离电路(81)、功率输出电路(82)、过流保护电路(83)和控制代码所组成,所述按键电路及显示电路(7)、压力传感器(5)、流量传感器(6)和信号隔离电路(81)与DSC连接,电源与整流电源电路(9)连接,整流电源电路与所有电路连接,水泵有进水口(3)和出水口(4),压力传感器(5)和流量传感器(6)安装在出水口(4)上,所述控制系统的显示电路(7)中有数码管U4显示实时压力和设定压力,由按键电路来设定需要控制的压力,4位8段LED数码管U4由第四集成块IC4和第六集成块IC6驱动,其信号输入端口第四集成块IC4的第14管脚连接到DSC的第11管脚,第四集成块IC4的第11管脚连接到DSC的第14管脚,第四集成 1. Single-phase AC constant pressure pump, comprising a water pump (2), a pressure sensor (5), a flow sensor (6) and a control system, said control system characterized by a DSC, single-phase motor key (I) circuit, a rectifying power supply circuit (9), a display circuit (7), a signal isolation circuit (81), power output circuit (82), overcurrent protection circuit (83) and a control code composed of a key circuit and display circuit ( 7), a pressure sensor (5), a flow sensor (6) and a signal isolation circuit (81) is connected to a DSC, the power supply and the rectifying power supply circuit (9), a rectifying power supply circuit and all circuits connected to the water pump water inlet (3) and a water outlet (4), a pressure sensor (5) and a flow sensor (6) is mounted on the outlet (4), the display circuit of the control system (7) has U4 digital display real-time pressure and the set pressure, a key circuit to set the pressure to be controlled, four 8-segment LED U4 driven by the fourth and sixth manifold manifold IC4 IC6, which signal input port of the fourth manifold 14 is connected to the pin IC4 DSC the first pin 11, a fourth manifold 11 is connected to the pin IC4 DSC pin 14, the fourth integration IC4的第12管脚连接到DSC的第15管脚,由第51、第50、第52、第53、第54电阻(R51、R50、R52、R53、R54)和第1、第2、第3按键(S1、S2、S3)组成的按键电路连接到DSC的第6管脚,所述控制系统由含有DSP功能的DSC通过代码产生的两个PWM信号由PWMlL的第26管脚和PWM2L的第24管脚输出,由第一集成块ICl和第八集成块IC8组成的信号隔离电路(81)隔离后连接到Al集成块UlA的第I管脚和B集成块UlB的第3管脚非门74HC04 ;反相后分别由Al集成块UlA的第2管脚和B集成块UlB的第4管脚输出,与第七集成块IC7、第二集成块IC2的第1、2管脚交叉连接,第二集成块IC2、第七集成块IC7的第19、12管脚分别驱动4个IGBT ;第I三极管、第2三极管、第3三极管、第4三极管(Ql、Q2、Q3、Q4)由第I三极管Ql的E极连接到电机的U端,由第3三极管Q3的E极连接到V端,所述控制系统有第二集成块、第七集成块IC2、IC7的内部放大器与第3 IC4 is connected to pin 12 of the DSC 15 of pin 51 by the first, 50th, 52nd, 53rd, 54th resistor (R51, R50, R52, R53, R54) and the first, second, 3 button (S1, S2, S3) the key circuit connected to pin 6 of the DSC, the control system is composed of two PWM signals containing DSC DSP function code is produced by the first pin 26 and PWM2L of PWMlL output pin 24, signal isolation circuit (81) by a first manifold, and an eighth ICl composition IC8 after isolation manifold is connected to the third terminal I of the non-manifold UlA pin Al and B of the manifold UlB gate 74HC04; UlB after inverted respectively by the first Al manifold UlA pin 2 and output pin B manifold 4, seventh IC7 manifold, a second manifold 1,2 IC2 cross pin connection the second manifold IC2, IC7 manifold of the seventh pin 19, 12 respectively drive the IGBT 4; I, transistor, the second transistor, a third transistor, a fourth transistor (Ql, Q2, Q3, Q4) of E I of transistor Ql is connected to the terminal U of the motor, by the third transistor Q3 is connected to the E terminal V, the control system has a second manifold, the manifold internal seventh amplifier IC2, IC7 and third 3、第34电阻(R33、R34)、第28 电容C28、第18、第25、第27、第16、第22、第23 电阻(R18、R25、R27、R16、R22、R23)共同组成过流保护电路(83);第二集成块IC2、第七集成块IC7的保护输出端第3管脚连接到隔离第三集成块IC3的第2管脚,将信号隔离后由第三集成块IC3的第4管脚输出连接到DSC的第16管脚,低电平时保护起动。 3, 34th resistor (R33, R34), the 28th capacitor the C28, 18, 25, 27, 16, 22, 23, resistors (R18, R25, R27, R16, R22, R23) together constitute through protection circuit (83); the second integrated block IC2, IC7 seventh output terminal protected manifold third pin is connected to a third manifold spacer pin 2 of IC3, the signal is separated by a third manifold IC3 the fourth terminal is connected to the output pin of the DSC 16, starting at the low level protection.
2.如权利要求1所述的单相交流变频恒压水泵,其特征在于所述流量传感器(6)的一端连接到地端,另一端连接到DSC的第5管脚,压力传感器(5)的3个端口一个连接到5V电源,另一个连接到地端,再另一个连接到DSC的第4管脚。 2. The single-phase AC constant pressure water pump according to claim 1, characterized in that one end of the flow sensor (6) is connected to ground, and the other end connected to the fifth terminal of the DSC, the pressure sensor (5) the three ports are connected to a 5V power supply, the other terminal connected to ground, then the other is connected to the fourth terminal of the DSC.
CN201010594895.8A 2010-12-17 2010-12-17 Single-phase alternating-current frequency-conversion constant-voltage water pump CN102562548B (en)

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CN201671802U (en) * 2010-05-26 2010-12-15 天津市华萌科技有限公司 Fan and pump class load automatic adjusting and super power saving device
CN201953633U (en) * 2010-12-17 2011-08-31 台州神能电器有限公司 Single-phase alternating-current variable-frequency constant-pressure water pump

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