CN201425921Y - Electromagnetic relay zero-crossing switch circuit - Google Patents

Electromagnetic relay zero-crossing switch circuit Download PDF

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Publication number
CN201425921Y
CN201425921Y CN2009200761967U CN200920076196U CN201425921Y CN 201425921 Y CN201425921 Y CN 201425921Y CN 2009200761967 U CN2009200761967 U CN 2009200761967U CN 200920076196 U CN200920076196 U CN 200920076196U CN 201425921 Y CN201425921 Y CN 201425921Y
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circuit
electromagnetic relay
relay
resistor
zero
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CN2009200761967U
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Chinese (zh)
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勇 卫
利 姚
黄德松
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百利通电子(上海)有限公司
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Abstract

The utility model discloses an electromagnetic relay zero-crossing switch circuit, which is characterized by comprising an intelligent control chip, a trace detection circuit and an AC sampling circuit, wherein the intelligent control chip is respectively connected with the outputs of the trace detection circuit and the AC sampling circuit and controls the output of the electromagnetic relay; theAC sampling circuit is used for detecting the input AC voltage signal, the trace detection circuit is used for detecting the contact switch signal of the electromagnetic relay, and the intelligent control chip is used for collecting, storing and computing the input AC voltage signal and the contact switch signal of the electromagnetic relay and for controlling the switch of the electromagnetic relay. The utility model solves the problems of the sparking and EMI of the electromagnetic relay through the circuit self-learning, improves the service life of the relay, and reduces the production cost of the circuit design.

Description

一种电磁继电器过零开关电路 An electromagnetic relays zero switch circuit

技术领域 FIELD

本实用新型属于电子电路技术领域,尤其涉及一种电磁电器过零开关电路。 The present invention belongs to the technical field of electronic circuits, and particularly to a zero-crossing electrical solenoid switch circuit. 背景技术 Background technique

在电褽斗、电热水器、电烤箱、空调、冰箱等大功率家电的控制电路中大多采用电磁继电器控制,而继电器开关过程中的打火则是继电器触点的致命杀手, 大大减少了继电器寿命,并同时带来了EMI干扰问题。 A control circuit electrically band collar bucket, electric water heaters, ovens, air conditioners, refrigerators and other appliances used in most high-power electromagnetic relay control, and the relay switch is the ignition process of the relay contacts killer, greatly reducing the life of the relay and also brought EMI interference.

而本申请人已就继电器的打火问题递交过解决该问题的有关过零触发电路 The applicant has submitted on this issue ignition relay had been about to solve the problem of zero trigger circuit

的专利申请,具体可参见专利ZL 2006 2 0039011.1 ,本申请是在前一专利的基础上改进,去掉了可控硅,降低了成本,不但可以达到同样的目的,同时还可以适应更多的继电器。 Patent application, reference may be made Patent ZL 2006 2 0039011.1, the present patent application is based on a first improvement, the thyristor is removed, reducing the cost, not only can achieve the same purpose, but also can accommodate more relays .

实用新型内容 SUMMARY

本实用新型的目的是公开一种提高电磁继电器使用寿命,解决EMI干扰问题的电磁继电器过零开关电路。 The object of the present invention is disclosed for improving the service life of the electromagnetic relay, an electromagnetic interference EMI solve the zero-crossing relay switch circuit.

本实用新型的技术方案是, 一种电磁继电器过零开关电路,包括智能控制芯片、跟踪检测电路和交流采样电路,所述智能控制芯片分别连接所述跟踪检测 Aspect of the present invention is an electromagnetic relays zero switch circuit comprising intelligent control chip, the tracking detection circuit and a sampling circuit AC, the smart controller chip is connected to the tracking and detection

电路和所述交流采样电路的输出,控制所述电磁继电器的输出,其中: 所述交流采样电路用于对输入交流电压信号的检测; 所述跟踪检测电路用于对电磁继电器触点开关信号的检测; 所述智能控制芯片用于对所述输入交流电压信号和所述电磁继电器触点开 Circuit and the AC output sampling circuit, the control output of the electromagnetic relay, wherein: said sampling circuit for detecting AC input AC voltage signal; a detection circuit for the tracking electromagnetic relay contact switch signal detection; the smart chip for controlling the opening of the input AC voltage signal and the electromagnetic relay contacts

关信号的采集、存储和计算,和对于所述电磁继电器的开关控制。 OFF signal acquisition, storage and computation, and a switch for controlling the electromagnetic relay.

所述交流采样电路由电阻器三和电容器二的并联电路与电阻器一串联组成。 The alternating current sampling circuit of a resistor and a capacitor two three parallel circuit in series with a resistor. 所述电阻器三取值10KQ,电容器二取值0.01 li F,电阻器一取值1MQ。 The three resistor values ​​10KQ, two capacitor values ​​0.01 li F, a resistor value 1MQ. 所述跟踪检测电路由电阻器四和电容器三的并联电路与电阻器二串联组成。 The tracking and detection circuit consists of two series resistors and four capacitors in parallel circuit with three resistors. 所述电阻器四取值10KQ,电容器三取值0.01 u F,电阻器二取值1MQ。 The value of resistor four 10KQ, three values ​​of the capacitor 0.01 u F, two resistor values ​​1MQ. 下面就本实用新型的技术方案的原理做一简单说明。 What follows is a brief description on the principles of the present invention technical solution. 电磁继电器就是一个机械的电磁开关,其基本原理是在给线圈加电时,其产生的磁场会将衔铁从一个常闭触点上吸下来转到常开触点上,因为是金属触点, 所以继电器具有导通电阻非常小的特点,可以应用在大功率控制的场合。 A mechanical electromagnetic relay is an electromagnetic switch, which is the basic principle when the power to the coil, which will generate a magnetic field of the armature from a normally closed to normally open suction down contact to the contact, as is the metal contact, so relay has very low on-resistance characteristics, it can be used in applications where high power control.

也因为电磁继电器的通断是机械性的动作,所以在给继电器加电的时候开关从一边移动到另外一边是需要一定的时间的,这就是继电器的动作时间, 一般功率继电器的动作时间在5—30mS左右,而且具有较大的个体差异,这个时间对电器工作一般是没有什么影响的,但是这样就导致无法去对准电压过零点进行开启和关断负载,开关带来的浪涌电流就会给电网造成干扰,这是继电器一直无法解决的问题,有些在研发的使用继电器的控制的产品中基本是计算一个继电器的平均吸合时间,然后在过零点提前一定的时间去开启继电器,这样基本可以使部分开关动作是在过零点附近,但考虑个体差异,还是没有真正解决问题。 But also because the electromagnetic relay on and off are mechanical action, so that when a relay is powered from the switch while moving to the other side will take some time, which is the operation time of the operation time of the relay, the general power relay 5 about -30mS, but also has a large individual differences, this time for electrical work in general is no effect, but this will not lead to the alignment voltage zero crossing on and off the load current is caused by switching surges grid will cause interference, which is the relay has been unable to solve the problem, some of the products developed using the relay control of a relay base is calculation of the average pull-in time, then the zero crossing ahead some time to open the relay, so the basic part can make switching action is too close to zero, but considering individual differences, did not really solve the problem.

另外电磁继电器在控制高压大电流时在开关的瞬间在开关触点上往往会出现拉弧现象,也就是一般看到的打火现象,此时就会出现电磨损,而这种磨损要远远超过机械磨损,所以导致继电器的电气寿命远远小于其机械寿命, 一般电气寿命都在5 — 10万次左右,而纯机械寿命一般可以达到100万次以上,为此业界很多人都在致力于电子灭弧的研究, 一般会使用灭弧罩、阻容消弧或者电子消弧器来消除电弧。 Further control of the electromagnetic relay when the high voltage at the moment a large current will tend to switch on the switching arcing contact, which is generally seen ignition phenomena, electrical wear occurs at this time, and this is much wear more than mechanical wear, resulting in an electrical relay life far less than their mechanical life and electrical life are generally 5 - 10 million, while the purely mechanical life in general can reach more than one million times, for a lot of people are committed to the industry electron interrupter, generally use arc chute, or an electronic RC crowbar to extinguish the arc crowbar.

针对上述问题,本实用新型的技术方案在过零点前面提前一个时间给电磁继电器线圈加电,如果这个时间正好等于继电器的动作时间,则继电器的触点就可以正好在过零点吸合。 For the above problem, the technical solution of the present invention in advance in front of the zero crossing time for a power relay solenoid, if this time is exactly equal to the operation time of the relay, the relay contacts can just pull the zero crossing. 对于不同类型的电磁继电器,或者同一种继电器的不同个体,甚至同一个体的不同驱动电压或者温度等外界条件,都有较大的动作时间的差异。 For different types of electromagnetic relays, the relay or different individuals of the same, or even the same individual or different driving voltages external conditions such as temperature, there are large differences in the operation time. 因为无法给所有的继电器一样的提前量,本实用新型的技术方案在每次继电器吸合或者断开的时候跟踪检测触点真正吸合或者断开的时间,将数据送入IC 内部,进行存储、计算,以修正提前量,从而达到正好让提前量等于动作时间, 实现了过零触发。 Since the same can not advance to all relays, the technical solution of the present invention to track each time the relay contacts or disconnection detection or pull off the real time data into the IC, it is stored calculated to correct the amount in advance, so as to advance an amount equal to just let the operating time to achieve zero trigger. 同时,本实用新型的电路也不需要额外的灭弧装置。 Meanwhile, the present invention does not require additional circuitry extinguishing device.

本实用新型以一种电路自学习的方式解决了电磁继电器打火的问题和EMI 问题,提高了继电器的使用寿命,降低了电路设计制造成本。 The utility model self-learning circuit in a way to solve the electromagnetic relay ignition problems and EMI problems and improve the life of the relay, reducing design and manufacturing cost of the circuit.

4图1是本实用新型一实施例中电磁继电器过零开关电路模块原理框图图2是本实用新型一实施例中电磁继电器过零开关电路原理图 FIG 4 is an embodiment of the electromagnetic relay embodiment according to the present invention a zero-crossing module switch circuit 2 is a functional block diagram of the electromagnetic relay of the present invention, a zero-crossing switching circuit schematic embodiment of FIG.

具体实施方式 Detailed ways

以下结合附图,对本实用新型的具体实施方式做进一步说明。 Below in conjunction with the accompanying drawings, the present invention is further described particular embodiment. 本实用新型在电路内部存储有一个首次开启继电器提前量的默认初始值,在首次接到开启继电器信号后,根据默认提前量开启继电器,随后则检测继电器的触点真正吸合时间,若正好是在过零点,则下次继续以这个提前量进行控制,而一般继电器阵阵吸合时间都会有一点提前或者滞后,则IC会将这个提前和滞后的时间存入IC,经过加权计算用来修正提前量,提前则减,滞后则加,第二次就以修正后的时间来开启继电器,同样若正好过零则不作处理,若有提前或者滞后则再修正提前量,如此几次即可完成跟踪,以后继电器都会在过零点吸合。 In the present invention, the circuit stores therein in advance a first open relay default initial value of the amount, in turn relays the signal received after the first, according to advance default open relay, then the relay contacts is detected pull real time, exactly if zero crossing, the next to continue to control the advance, and the general relay bursts will pull a little time lag or advance, the IC will use this in advance and stored in the IC lag time, for correcting the calculated weighted advance, advance is reduced, then add the hysteresis, the second on the time to open the relay after the correction, the same if not disposed of just over zero, then if the advance or lag correction amount in advance, so a few times to complete tracking, after the zero crossing will be the relay pull. 关闭的过程与开启相同。 The process of closing and opening the same.

如图1所示,电磁继电器过零开关电路模块,包括智能控制芯片、跟踪检测电路和交流采样电路,其中,交流采样电路用于对输入交流电压信号的检测,跟踪检测电路用于对电磁继电器触点开关信号的检测,智能控制芯片用于对所述输入交流电压信号和所述电磁继电器触点开关信号的采集、存储和计算,和对于所述电磁继电器的开关控制。 1, the electromagnetic relays zero switch circuit module includes an intelligent control chip, the tracking detection circuit and a sampling circuit AC, wherein AC sampling circuit for detecting, tracking and detection circuit of the AC input voltage signal for the electromagnetic relay detection, intelligent control chip contact switch signal for acquiring, storing, and calculating the electromagnetic alternating voltage signal and the relay contact switch signal, and a switch for controlling the input of the electromagnetic relay. 控制电路主要完成继电器信号的采集、存储、计算、 输出处理,交流采样电路只需一个电阻即可,为安全可靠可以增加一个电阻和一个电容,而跟踪采样电路可以跟交流采样电路具有同样的结构,而继电器可以是目前市面使用的所有的直流驱动继电器。 The main relay control circuit completion signal acquisition, storage, calculation, output processing, the AC resistance can be only one sampling circuit, may be added to secure a resistor and a capacitor, and tracking the sampling circuit may have the same configuration with the sampling circuit AC , and all of the current relay can be used to drive a relay DC market.

如图2所示,图中U1是PTI专用控制芯片,是控制电路的核心,控制协调其它电路的工作;R1,R3和C2用来采集交流电源的过零点信息,R2, R4和C3 是继电器触点工作状态检测电路,检测继电器是否已经在过零点吸合或断开,IC 根据这些信息以进行吸合控制的调整;R5, Q1和D1则是继电器线圈驱动电路, 用以控制继电器吸合或断开。 As shown, in FIG. 2 PTI U1 is a dedicated control chip, the core control circuit controls the coordination of the other circuits; R1, R3 and C2 zero-crossing information is used to collect AC power, R2, R4, and C3 is a relay contact operating state detection circuit for detecting whether the relay has zero crossing pull or off, according to the information in the IC pull adjustment control; R5, Q1 and D1 is the relay coil driver circuit for controlling the relay or disconnected. Cl是IC的电源滤波电容。 Cl is the power supply filter capacitor IC. 所述交流采样电路由电阻器R3和电容器C2的并联电路与电阻器R1串联组成,电阻器R3取值10KQ , 电容器C2取值0.01 u F,电阻器Rl取值1M Q 。 Sampling the AC circuit by the resistor R3 and the capacitor C2 is a parallel circuit in series with a resistor R1, a resistor R3 in 10KQ, the capacitor C2 has the value 0.01 u F, resistors Rl values ​​1M Q. 跟踪检测电路由电阻器R4和电容器C3的并联电路与电阻器R2串联组成,电阻器R4取值10KQ ,电容器C3取值0.01uF,电阻器R2取值1MQ。 Tracking and detection circuit by the resistor R4 and the capacitor C3 is connected in parallel circuit in series with a resistor R2, resistor R4 value 10KQ, values ​​of 0.01uF capacitor C3, resistor R2 value 1MQ.

总之,本实用新型的技术方案主要是一种自学习型继电器过零开关的实现方法,电路由智能控制IC、交流采样电路、跟踪检测电路、继电器和负载等组成, 其中智能控制电路为本公司专用芯片的部分或者全部电路,它是系统的核心,收到控制指令后会根据交流信号相位以及目前继电器的状态作出判断后给出一个驱动信号,去开启或者关闭继电器。 In summary, the technical solution of the present invention is to achieve a method for self-learning type relays zero switch circuit by the intelligent control IC, a circuit composed of AC sampling, tracking and detection circuit, a load relay and the like, wherein the intelligent control circuit Company Some or all of the circuit ASIC, which is the core of the system, will make the determination gives a drive signal phase, and the current state of the AC signal after receiving the relay control instruction to open or close the relay. 交流采样电路负责采样交流相位;跟踪检测电路则采样继电器触点的工作状态,确认有没有真正吸合。 AC sampling circuit responsible for sampling a phase alternating current; tracking the sampling operation state detecting circuit of the relay contacts, to confirm there is no real pull. 本方案运用自动学习跟踪继电器的吸合动作时间的原理,根据继电器本身的开关延迟,给予相应的提前量的方法,实现了电磁继电器过零开关。 Using the principle of the present embodiment to automatically learn the tracking pull-in operation of the relay time delay switch according to the relay itself, to give the corresponding advance way to achieve electromagnetic relays zero switch. 本实用新型技术方案无需其它附件器件,自动适应各种继电器,继电器的个体差异不再成为问题。 Aspect of the present invention without further attachment means, automatically adapt to various relays, relays individual differences no longer a problem.

6 6

Claims (5)

1、一种电磁继电器过零开关电路,其特征在于,包括智能控制芯片、跟踪检测电路和交流采样电路,所述智能控制芯片分别连接所述跟踪检测电路和所述交流采样电路的输出,控制所述电磁继电器的输出,其中: 所述交流采样电路用于对输入交流电压信号的检测; 所述跟踪检测电路用于对电磁继电器触点开关信号的检测; 所述智能控制芯片用于对所述输入交流电压信号和所述电磁继电器触点开关信号的采集、存储和计算,和对于所述电磁继电器的开关控制。 1. An electromagnetic relays zero switch circuit comprising intelligent control chip, the tracking detection circuit and a sampling circuit AC, the intelligent control chip connected to the tracking detection circuit and the AC output of the sampling circuit respectively, the control output of the electromagnetic relay, wherein: said sampling circuit for detecting an AC input AC voltage signal; a detection circuit for detecting said tracking electromagnetic relay contact switch signal; the smart chip for controlling the said input collection, storage and computation of the electromagnetic alternating voltage signal and the relay contact switch signal, and a switch for controlling the electromagnetic relay.
2、 如权利要求1所示的电磁继电器过零开关电路,其特征在于,所述交流采样电路由电阻器三和电容器二的并联电路与电阻器一串联组成。 2, the electromagnetic relay as claimed in claim 1 represented by the zero crossing switching circuit, characterized in that the alternating sampling circuit of a resistor and a capacitor two three parallel circuit in series with a resistor.
3、 如权利要求2所示的电磁继电器过零开关电路,其特征在于,所述电阻器三取值10KQ,电容器二取值0.01 F,电阻器一取值1MQ。 3, shown an electromagnetic relay as claimed in claim 2, zero-crossing switching circuit, characterized in that said three resistor values ​​10KQ, two capacitor values ​​0.01 F, a resistor value 1MQ.
4、 如权利要求1所示的电磁继电器过零开关电路,其特征在于,所述跟踪检测电路由电阻器四和电容器三的并联电路与电阻器二串联组成。 4, the electromagnetic relay as claimed in claim 1 represented by the zero crossing switching circuit, wherein the tracking detection circuit two four series resistor and a capacitor and a parallel circuit of three resistors.
5、 如权利要求4所示的电磁继电器过零开关电路,其特征在于,所述电阻器四取值10KQ,电容器三取值0.01 u F,电阻器二取值1MQ。 5, the electromagnetic relay as claimed in claim 4 illustrated zero-crossing switching circuit, wherein said resistor four values ​​10KQ, three values ​​of the capacitor 0.01 u F, two resistor values ​​1MQ.
CN2009200761967U 2009-06-12 2009-06-12 Electromagnetic relay zero-crossing switch circuit CN201425921Y (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101577192B (en) 2009-06-12 2011-05-04 百利通电子(上海)有限公司 Method of zero passage switch of electromagnetic relay and circuit
CN102419562A (en) * 2011-12-14 2012-04-18 海信(山东)空调有限公司 Control method of relay with inductive load, and household appliance
CN102956398A (en) * 2011-08-26 2013-03-06 Ls产电株式会社 Electromagnetic contactor control method and electromagnetic contactor using the same
CN104576206A (en) * 2015-01-19 2015-04-29 国家电网公司 Spark control device of alternating current contactor
CN105098792A (en) * 2014-12-18 2015-11-25 华北电力大学 Intelligent capacitor capable of realizing on-line self-adaptive zero-crossing switching correction
CN105679606A (en) * 2016-01-28 2016-06-15 福州大学 Electromagnetic relay based wireless zero-crossing on-off switch and control method
US10240597B2 (en) 2012-02-03 2019-03-26 S.P.M. Flow Control, Inc. Pump assembly including fluid cylinder and tapered valve seats
USD856498S1 (en) 2013-01-31 2019-08-13 S.P.M. Flow Control, Inc. Valve seat

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101577192B (en) 2009-06-12 2011-05-04 百利通电子(上海)有限公司 Method of zero passage switch of electromagnetic relay and circuit
CN102956398A (en) * 2011-08-26 2013-03-06 Ls产电株式会社 Electromagnetic contactor control method and electromagnetic contactor using the same
CN102419562A (en) * 2011-12-14 2012-04-18 海信(山东)空调有限公司 Control method of relay with inductive load, and household appliance
CN102419562B (en) 2011-12-14 2013-08-21 海信(山东)空调有限公司 Control method of relay with inductive load, and household appliance
US10240597B2 (en) 2012-02-03 2019-03-26 S.P.M. Flow Control, Inc. Pump assembly including fluid cylinder and tapered valve seats
USD856498S1 (en) 2013-01-31 2019-08-13 S.P.M. Flow Control, Inc. Valve seat
CN105098792A (en) * 2014-12-18 2015-11-25 华北电力大学 Intelligent capacitor capable of realizing on-line self-adaptive zero-crossing switching correction
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