阅读说明：本技术 一种继电器控制同步电机的电路 (Circuit for controlling synchronous motor by relay ) 是由 吴泉 于 2019-08-10 设计创作，主要内容包括：本发明公开了一种继电器控制同步电机的电路,包括继电器REL1、继电器REL2、三极管Q1和三极管Q2；所述三极管Q1的基极连接电阻R1和电阻R2,电阻R1的另一端连接CPU芯片的P1.1接口,三极管Q1的集电极连接二极管D1的阳极和继电器REL1线圈,继电器REL1线圈另一端连接12V直流电,继电器REL1触点的一个不动端连接CPU芯片的AD检测口,继电器REL1触点的另一个不动端连接12V直流电,继电器REL1触点的动端连接电容C1和电机接口CN1,本发明继电器控制同步电机的电路根据家用电器的功能,工作流程等,切换同步电机的转动方向,带动结构部件,从而实现家电产品中进、出风口的开和关,对整机产品防尘、防污等,还实现外观美化,也给用户带来良好的体验感。(The invention discloses a circuit for controlling a synchronous motor by a relay, which comprises a relay REL1, a relay REL2, a triode Q1 and a triode Q2, wherein the relay REL1 is connected with the relay; the base electrode of the triode Q1 is connected with a resistor R1 and a resistor R2, the other end of the resistor R1 is connected with a P1.1 interface of a CPU chip, the collector electrode of the triode Q1 is connected with the anode of a diode D1 and a coil of a relay REL1, the other end of the coil of the relay REL1 is connected with 12V direct current, one fixed end of a contact of the relay REL1 is connected with an AD detection port of the CPU chip, the other fixed end of a contact of the relay REL1 is connected with the 12V direct current, and the movable end of the contact of the relay REL1 is connected with a capacitor C1 and a motor interface CN 1.)

1. A circuit for controlling a synchronous motor by a relay comprises a relay REL1, a relay REL2, a triode Q1 and a triode Q2; the CPU chip detection circuit is characterized in that the base of the triode Q1 is connected with a resistor R1 and a resistor R2, the other end of the resistor R1 is connected with a P1.1 interface of a CPU chip, the collector of the triode Q1 is connected with the anode of a diode D1 and a coil of a relay REL1, the other end of the coil of the relay REL1 is connected with 12V direct current, one fixed end of a contact of the relay REL1 is connected with an AD detection port of the CPU chip, the other fixed end of the contact of the relay REL1 is connected with 12V direct current, the movable end of a contact of the relay REL1 is connected with a capacitor C1 and a motor interface CN1, the other end of the capacitor C1 is connected with the other end of the motor interface CN1 and the movable end of a contact of the relay REL2 through a resistor R5, the base of the triode Q2 is connected with a resistor R3 and a resistor R4, the other end of the resistor R3 is connected with a P1.0 interface of the CPU chip, the collector of, one fixed end of a contact of the relay REL2 is connected with an AD detection port of the CPU chip, a resistor R6 and a resistor R7, the other fixed end of a contact of the relay REL2 is connected with 12V direct current, and the other end of the resistor R6 is connected with an anode of a diode D3, a cathode of a diode D4 and a P0.5 interface of the CPU chip.

2. The circuit for controlling a synchronous motor according to claim 1, wherein the cathode of the diode D3 is connected to 5V dc.

Technical Field

The invention relates to the technical field of relays, in particular to a circuit for controlling a synchronous motor by a relay.

Background

A relay (english name: relay) is an electric control device, and is an electric appliance that generates a predetermined step change in a controlled amount in an electric output circuit when a change in an input amount (excitation amount) meets a predetermined requirement. It has an interactive relationship between a control system (also called an input loop) and a controlled system (also called an output loop). It is commonly used in automated control circuits, which are actually a "recloser" that uses low current to control high current operation. Therefore, the circuit plays the roles of automatic regulation, safety protection, circuit conversion and the like.

At present, when a common household appliance adopts a relay to control a load of a synchronous motor, a CPU chip driving port is directly used for controlling the relay to drive the load, if the CPU chip driving port is damaged, the possibility that the load has certain hidden danger and the load is damaged can be caused, and the design reliability is insufficient.

Disclosure of Invention

the present invention is directed to a circuit for controlling a synchronous motor with a relay, which solves the above problems of the prior art.

In order to achieve the purpose, the invention provides the following technical scheme:

A circuit for controlling a synchronous motor by a relay comprises a relay REL1, a relay REL2, a triode Q1 and a triode Q2; the base of the triode Q1 is connected with a resistor R1 and a resistor R2, the other end of the resistor R1 is connected with a P1.1 interface of a CPU chip, the collector of the triode Q1 is connected with the anode of a diode D1 and a coil of a relay REL1, the other end of a coil of a relay REL1 is connected with 12V direct current, one fixed end of a contact of a relay REL1 is connected with an AD detection port of the CPU chip, the other fixed end of a contact of the relay REL1 is connected with 12V direct current, the movable end of a contact of the relay REL1 is connected with a capacitor C1 and a motor interface CN1, the other end of the capacitor C1 is connected with the other end of a contact CN1 of the motor interface and the movable end of a contact of a relay REL2 through a resistor R5, the base of the triode Q2 is connected with a resistor R3 and a resistor R4, the other end of the resistor R3 is connected with a P1.0 interface of the CPU chip, the collector of the diode D2 and a coil of the relay REL2, the other end of the, The other fixed end of a contact of the relay REL2 is connected with 12V direct current, and the other end of the resistor R6 is connected with an anode of a diode D3, a cathode of a diode D4 and a P0.5 interface of the CPU chip.

As a further technical scheme of the invention: the cathode of the diode D3 is connected with 5V direct current.

Compared with the prior art, the invention has the beneficial effects that: the circuit for controlling the synchronous motor by the relay switches the rotation direction of the synchronous motor according to the functions, the working process and the like of the household appliance, and drives the structural component, so that the opening and closing of the air inlet and the air outlet in the household appliance are realized, the whole household appliance is dustproof and antifouling, the appearance is beautified, and good experience is brought to a user.

Drawings

Fig. 1 is a circuit diagram of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.