CN210724618U - Forward and reverse rotation control circuit - Google Patents
Forward and reverse rotation control circuit Download PDFInfo
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- CN210724618U CN210724618U CN201921795228.9U CN201921795228U CN210724618U CN 210724618 U CN210724618 U CN 210724618U CN 201921795228 U CN201921795228 U CN 201921795228U CN 210724618 U CN210724618 U CN 210724618U
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Abstract
The utility model relates to a control circuit that is just reversing, including main control chip, the first group relay drive circuit and the second group relay drive circuit of being connected with main control chip respectively, first group relay drive circuit connects first group relay, and the second group relay drive circuit connects the second group relay, adopts first phase sequence to insert three phase current after the first group relay intercommunication and treats the control motor, adopts second phase sequence to insert three phase current after the second group relay intercommunication and treats the control motor, first phase sequence with second phase sequence includes two phase sequences that exchange. In this application, send drive instruction to first group relay drive circuit or second group relay drive circuit through master control chip and make first group relay or second group relay intercommunication realize treating the positive and negative rotation of control motor. The circuit realizes positive and negative rotation control without wiring for phase sequence of a waiting control motor, and a contactor is not needed in the circuit, so that the structure of the positive and negative rotation control circuit is simplified.
Description
Technical Field
The application relates to the technical field of circuit control, in particular to a forward and reverse rotation control circuit.
Background
The motor rotates clockwise and counterclockwise, which means that the motor rotates clockwise and counterclockwise. The clockwise rotation of the motor is the forward rotation of the motor, and the anticlockwise rotation of the motor is the reverse rotation of the motor. The existing forward and reverse rotation control circuit needs to achieve the purpose of reversing any two opposite connecting wires connected to the three-phase power inlet wire of the motor when the forward and reverse rotation of the motor is realized.
In addition, in the prior art, the forward and reverse rotation of the motor is realized by controlling the contactor through the controller so as to control the forward and reverse rotation of the motor. The contactor is only suitable for connecting and breaking larger current signals to drive power equipment such as a motor, and a positive and negative rotation control system using the contactor is also required to be provided with an arc extinguishing device, so that the contactor is large in size and inconvenient to install and carry.
SUMMERY OF THE UTILITY MODEL
To overcome, at least to some extent, the problems of the related art, the present application provides a forward/reverse control circuit.
The scheme of the application is as follows:
a positive and negative rotation control circuit comprising:
the main control chip is used for inputting a control instruction, wherein the control instruction comprises a forward rotation instruction or a reverse rotation instruction, outputting a first driving instruction to the first group of relay driving circuits when the control instruction is the forward rotation instruction, and outputting a second driving instruction to the second group of relay driving circuits when the control instruction is the reverse rotation instruction;
the first group of relay driving circuits are connected with the main control chip and used for driving the first group of relays connected to be communicated after the first driving instruction is received;
the second group of relay driving circuits are connected with the main control chip and used for driving the second group of relays connected to be communicated after the second driving instruction is received;
the first group of relays are connected with the first group of relay driving circuits and used for being communicated under the driving of the first group of relay driving circuits, and after the first group of relays are communicated, a three-phase power supply is connected to a motor to be controlled by adopting a first phase sequence;
the second group of relays are connected with the second group of relay driving circuits and used for being communicated under the driving of the second group of relay driving circuits, and after the second group of relays are communicated, a three-phase power supply is connected to a motor to be controlled by adopting a second phase sequence;
wherein the first phase sequence and the second phase sequence comprise two phase sequences that are reversed.
Preferably, in an implementable manner herein,
the first set of relay drive circuits includes: a first relay drive circuit and a second relay drive circuit;
the second group of relay drive circuits includes: a second relay drive circuit and a third relay drive circuit;
the first set of relays includes: a first relay, a second relay and a third relay;
the second set of relays includes: a third relay, a fourth relay and a fifth relay;
the first relay and the second relay are connected in parallel and then connected to a driving port of the first relay driving circuit;
the third relay is connected to a driving port of the second relay driving circuit;
the fourth relay and the fifth relay are connected in parallel and then connected to a driving port of the third relay driving circuit;
the first relay, the second relay, the third relay, the fourth relay and the fifth relay are respectively provided with two contacts;
the three-phase power supply comprises a first power supply output end, a second power supply output end and a third power supply output end;
the motor to be controlled comprises a first power supply input end, a second power supply input end and a third power supply input end;
one contact of the first relay is connected with the first power supply output end, and the other contact of the first relay is connected with the first power supply input end;
one contact of the second relay is connected with the second power supply output end, and the other contact of the second relay is connected with the second power supply input end;
one contact of the third relay is connected with the third power supply output end, and the other contact of the third relay is connected with the third power supply input end;
one contact of the fourth relay is connected with the first power supply output end, and the other contact of the fourth relay is connected with the second power supply input end;
one contact of the fifth relay is connected with the second power supply output end, and the other contact of the fifth relay is connected with the first power supply input end.
Preferably, in an implementation manner of the present application, the method further includes: a key circuit;
the key circuit is connected with the main control chip;
the key circuit includes: a first branch and a second branch;
the first branch and the second branch are mutually connected in parallel;
the first branch circuit is provided with a first branch circuit switch, a first contact and a second contact, the first contact and the second contact are in contact with the first branch circuit switch, the first branch circuit switch is used for controlling connection or disconnection of the first branch circuit, the second contact is grounded, and the first contact is connected with the main control chip; when the first branch is communicated, the forward rotation instruction is sent to the main control chip;
the second branch circuit is provided with a second branch circuit switch, a third contact and a fourth contact which are in contact with the second branch circuit switch, the second branch circuit switch is used for controlling the connection or disconnection of the second branch circuit, the fourth contact is grounded, and the third contact is connected with the main control chip; and when the second branch is communicated, the reverse instruction is sent to the main control chip.
Preferably, in an implementable manner of the present application, the key circuit further includes: a third branch;
the first branch, the second branch and the third branch are mutually connected in parallel;
a third branch switch, a fifth contact and a sixth contact which are in contact with the third branch switch are arranged on the third branch, the third branch switch is used for controlling the connection or disconnection of the third branch, the sixth contact is grounded, and the fifth contact is connected with the main control chip; when the third branch is communicated, a stop instruction is sent to the main control chip;
the main control chip is used for outputting a disconnection instruction to the first group of relay driving circuits or outputting a disconnection instruction to the second group of relay driving circuits when the control instruction is a stop instruction;
the first group of relay driving circuits are also used for driving the connected first group of relays to be connected after receiving the disconnection instruction;
and the second group of relay driving circuits are also used for driving the second group of relays connected to be disconnected after receiving the disconnection instruction.
Preferably, in an implementation manner of the present application, the method further includes: a remote control signal receiving circuit;
the remote control signal receiving circuit includes: the antenna is used for receiving the remote control signal;
the remote control signal receiving chip is connected with the antenna through a first capacitor; the remote control signal receiving chip is also connected with the main control chip;
the remote control signal receiving chip is used for receiving the forward rotation instruction or the forward rotation instruction through the antenna and sending the forward rotation instruction or the forward rotation instruction to the main control chip.
Preferably, in an implementable manner of the present application, the remote control signal receiving circuit further includes: the circuit comprises a first inductor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor and a crystal oscillator;
one end of the first inductor is connected with the antenna, and the other end of the first inductor is grounded;
one end of the second inductor is connected with the antenna through the first capacitor, and the other end of the second inductor is grounded;
one end of the second capacitor is connected with the antenna, and the other end of the second capacitor is grounded;
one end of the third capacitor is connected with the remote control signal receiving chip, and the other end of the third capacitor is grounded;
one end of the fourth capacitor is connected with the remote control signal receiving chip, and the other end of the fourth capacitor is grounded;
one end of the fifth capacitor is connected with the remote control signal receiving chip, and the other end of the fifth capacitor is grounded;
one end of the crystal oscillator is connected with the remote control signal receiving chip, and the other end of the crystal oscillator is grounded.
Preferably, in an implementation manner of the present application, the method further includes: a positive and negative rotation indicating circuit;
the positive and negative rotation indicating circuit comprises: the circuit comprises a first indicator light, a second indicator light, a first resistor and a second resistor;
one end of the first indicator lamp is connected with the main control chip through the first resistor, and the other end of the first indicator lamp is grounded;
one end of the second indicator light is connected with the main control chip through the second resistor, and the other end of the second indicator light is grounded.
Preferably, in an implementation manner of the present application, the method further includes: a power indication circuit; the power indication circuit includes: a third indicator light, a third resistor;
one end of the third indicator light is connected with the main control chip through the third resistor, and the other end of the third indicator light is grounded.
Preferably, in an implementation manner of the present application, the main control chip includes: the timing control circuit comprises a first grounding pin, a second grounding pin, a first timing configuration pin and a second timing configuration pin;
the first ground pin and the first timing configuration pin are connected by a shorting cap, or,
the second ground pin and the second timing configuration pin are connected by a shorting cap, or,
the first ground pin and the first timing configuration pin are connected by a shorting cap and the second ground pin and the second timing configuration pin are connected by a shorting cap.
Preferably, in an implementation manner of the present application, the main control chip includes: the relay driving circuit comprises a first relay driving circuit positive electrode configuration pin, a first relay driving circuit negative electrode configuration pin, a second relay driving circuit positive electrode configuration pin, a second relay driving circuit negative electrode configuration pin, a third relay driving circuit positive electrode configuration pin and a third relay driving circuit negative electrode configuration pin;
the driving port of the first relay driving circuit is connected with the first relay driving positive electrode configuration pin through a fourth resistor, connected with the first relay driving negative electrode configuration pin through a fifth resistor, connected with a power supply through a sixth resistor and grounded through a grounding wire;
the driving port of the second relay driving circuit is connected with the second relay driving positive electrode configuration pin through a seventh resistor, connected with the second relay driving negative electrode configuration pin through an eighth resistor, connected with a power supply through a ninth resistor and grounded through a grounding wire;
the driving port of the third relay driving circuit is connected with the third relay driving positive electrode configuration pin through a tenth resistor, connected with the third relay driving negative electrode configuration pin through an eleventh resistor, connected with a power supply through a twelfth resistor and grounded through a grounding wire.
The technical scheme provided by the application can comprise the following beneficial effects:
in the application, a main control chip is connected with a first group of relay driving circuits, when an input control instruction is a forward rotation instruction, the main control chip outputs a first driving instruction to the first group of relay driving circuits, the first group of relay driving circuits drive the connected first group of relays to be communicated after receiving the first driving instruction, and the first group of relays adopt a first phase sequence to connect a three-phase power supply to a motor to be controlled after being communicated; the main control chip is further connected with a second group of relay driving circuits, when the input control instruction is a reverse rotation instruction, the main control chip outputs a second driving instruction to the second group of relay driving circuits, the second group of relay driving circuits drive the second group of relays connected to be communicated after receiving the second driving instruction, the second group of relays adopt a second phase sequence to connect a three-phase power supply into a motor to be controlled after being communicated, the first phase sequence and the second phase sequence comprise two phase sequences which are exchanged, the belt control motor rotates forwards when being connected into three power supplies of the first sequence, and rotates backwards when being connected into three power supplies of the second sequence. In this application, accomplish the positive and negative control of treating the control motor through main control chip and relay, need not to exchange the wiring of motor to because need not use contactor in the circuit, simplified the circuit structure who uses the positive and negative control system of contactor, make the circuit system volume diminish, portable. The relay works in a low current circuit, and the low current can be used for controlling high current by using the relay instead of a contactor.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Fig. 1 is a circuit structure diagram of a forward/reverse rotation control circuit according to an embodiment of the present application;
fig. 2 is a structural diagram of a main control chip in a forward/reverse control circuit according to an embodiment of the present application;
fig. 3 is a circuit diagram of a relay driving circuit in a forward/reverse rotation control circuit according to an embodiment of the present application;
fig. 4 is a circuit diagram of a key circuit in a forward/reverse rotation control circuit according to an embodiment of the present application;
fig. 5 is a circuit diagram of a remote control signal receiving circuit in a forward/reverse control circuit according to an embodiment of the present application;
fig. 6 is a circuit diagram of a forward/reverse rotation indicating circuit and a power indicating circuit in a forward/reverse rotation control circuit according to an embodiment of the present application;
fig. 7 is a partial structural diagram of a main control chip in a forward/reverse control circuit according to another embodiment of the present application.
Reference numerals: a main control chip-1; a first group of relay drive circuits-2; a first relay drive circuit-21; a drive port-211 of the first relay drive circuit; a second relay drive circuit-22; drive port-221 of the second relay drive circuit; a second group of relay drive circuits-3; a third relay drive circuit-31; drive port-311 of the third relay drive circuit; a first set of relays-4; a first relay-41; a second relay-42; a third relay-43; a second set of relays-5; a fourth relay-51; a fifth relay-52; three power supplies-6; a first power supply output terminal 61; a second power supply output 62; a third power supply output terminal 63; a motor-7 to be controlled; a first power input 71; a second power input terminal 72; a third power input 73; a remote control signal receiving circuit-8; an antenna-81; and a remote control signal receiving chip-82.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
Fig. 1 is a circuit structure diagram of a forward/reverse rotation control circuit according to an embodiment of the present application, and referring to fig. 1, the forward/reverse rotation control circuit includes:
the main control chip 1 is used for inputting a control instruction, wherein the control instruction comprises a forward rotation instruction or a reverse rotation instruction, outputting a first driving instruction to the first group of relay driving circuits 2 when the control instruction is the forward rotation instruction, and outputting a second driving instruction to the second group of relay driving circuits 3 when the control instruction is the reverse rotation instruction;
the first group of relay driving circuits 2 are connected with the main control chip 1 and used for driving the connected first group of relays 4 to be communicated after receiving a first driving instruction;
the second group of relay driving circuits 3 are connected with the main control chip 1 and used for driving the second group of relays 5 connected to the second group of relays to be communicated after receiving a second driving instruction;
the first group of relays 4 is connected with the first group of relay driving circuits 2, is used for being communicated under the driving of the first group of relay driving circuits 2, and is used for connecting a three-phase power supply to the motor 7 to be controlled by adopting a first phase sequence after being communicated;
the second group of relays 5 is connected with the second group of relay driving circuits 3, is used for being communicated under the driving of the second group of relay driving circuits 3, and is used for connecting a three-phase power supply to the motor 7 to be controlled by adopting a second phase sequence after being communicated;
wherein the first phase sequence and the second phase sequence comprise two phase sequences that are reversed.
The main control chip 1 may be, but is not limited to, a KSL8M163 chip, and has an operating voltage of 5V. The structure of the main control chip 1 is shown in fig. 2.
The PA0, PA1, PA2, PA4, PA4, PA6, PA7, PC0, PC1, PC2, PC3, PC4, PC5, PC6, and PC7 are all signal input or output pins. VDD is a power supply pin, and VSS is a ground pin.
The 220V power supply voltage is reduced through the transformer, the reduced power supply is connected through the interface circuit, and the reduced power supply outputs one path of 12V power supply to the first group of relay driving circuits 2 and the second group of relay driving circuits 3. And outputting a 5V power supply to the main control chip 1.
The relay driving circuit can be but is not limited to a BL8023 bidirectional relay driving integrated circuit, is used for controlling the work of the magnetic latching relay, and has the characteristics of large output current and small static power consumption.
The motor usually comprises three items of U, V and W, and the motor needs to realize positive and negative rotation control, only two items of the phase sequence of the power supply of the motor need to be exchanged, usually, the item V is unchanged, and the item U and the item W are exchanged.
The first group of relays 4 adopt a first phase sequence to connect the three-phase power supply to the motor 7 to be controlled after being communicated, and the second group of relays 5 adopt a second phase sequence to connect the three-phase power supply to the motor 7 to be controlled after being communicated.
The first phase sequence and the second phase sequence comprise two phase sequences that are reversed.
Therefore, the forward and reverse rotation of the motor can be controlled by only controlling the communication of the first group of relays 4 and the second group of relays 5.
Specifically, the method comprises the following steps:
the first group relay drive circuit 2 includes: a first relay drive circuit 21 and a second relay drive circuit 22;
the second group relay drive circuit 3 includes: the second relay drive circuit 22 and the third relay drive circuit 31;
the first group of relays 4 includes: a first relay 41, a second relay 42, and a third relay 43;
the second group of relays 5 includes: a third relay 43, a fourth relay 51, and a fifth relay 52;
the first relay 41 and the second relay 42 are connected in parallel and then connected to the driving port 211 of the first relay driving circuit 21;
the third relay 43 is connected to the drive port 221 of the second relay drive circuit 22;
the fourth relay 51 and the fifth relay 52 are connected in parallel and then connected to the driving port 311 of the third relay driving circuit 31;
the first relay 41, the second relay 42, the third relay 43, the fourth relay 51, and the fifth relay 52 have two contacts, respectively;
the three-phase power supply comprises a first power supply output terminal 61, a second power supply output terminal 62 and a third power supply output terminal 63;
the motor 7 to be controlled comprises a first power input 71, a second power input 72 and a third power input 73;
one contact of the first relay 41 is connected to the first power output terminal 61, and the other contact is connected to the first power input terminal 71;
one contact of the second relay 42 is connected to the second power output terminal 62, and the other contact is connected to the second power input terminal 72;
one contact of the third relay 43 is connected to the third power output terminal 63, and the other contact is connected to the third power input terminal 73;
one contact of the fourth relay 51 is connected to the first power output terminal 61, and the other contact is connected to the second power input terminal 72;
one contact of the fifth relay 52 is connected to the second power output terminal 62, and the other contact is connected to the first power input terminal 71.
The first relay 41, the second relay 42, and the third relay 43 are the first group of relays 4.
One contact of the first relay 41 is connected to the first power output terminal 61, and the other contact is connected to the first power input terminal 71; one contact of the second relay 42 is connected to the second power output terminal 62, and the other contact is connected to the second power input terminal 72; one contact of the third relay 43 is connected to the third power output terminal 63, and the other contact is connected to the third power input terminal 73. And after the first group of relays 4 are communicated, a three-phase power supply is connected to a motor 7 to be controlled by adopting a first phase sequence.
The third relay 43, the fourth relay 51, and the fifth relay 52 are a second group of relays 5.
One contact of the third relay 43 is connected to the third power output terminal 63, and the other contact is connected to the third power input terminal 73; one contact of the fourth relay 51 is connected to the first power output terminal 61, and the other contact is connected to the second power input terminal 72; one contact of the fifth relay 52 is connected to the second power output terminal 62, and the other contact is connected to the first power input terminal 71. And after the second group of relays 5 are communicated, the three-phase power supply is connected to the motor 7 to be controlled by adopting a second phase sequence.
The first relay 41 and the second relay 42 are connected in parallel, and the fourth relay 51 and the fifth relay 52 are connected in parallel, so that the relay load current can be increased.
Since the first relay 41, the second relay 42, the third relay 43, the fourth relay 51, and the fifth relay 52 need to be connected to the main circuit of the motor 7 to be controlled, the first relay 41, the second relay 42, the third relay 43, the fourth relay 51, and the fifth relay 52 need a relatively large load current.
The first relay 41, the second relay 42, the third relay 43, the fourth relay 51 and the fifth relay 52 adopt high-current relays, and the load current requirement is 80-100A.
In this embodiment, the main control chip 1 is connected to the first relay drive circuit 2, when the input control instruction is a forward rotation instruction, the main control chip 1 outputs a first drive instruction to the first relay drive circuit 2 (the first relay drive circuit 21 and the second relay drive circuit 22), after receiving the first drive instruction, the first relay drive circuit 2 drives the connected first relay 4 (the first relay 41, the second relay 42, and the third relay 43) to be communicated, and after being communicated, the first relay 4 adopts a first phase sequence to connect a three-phase power supply to the motor 7 to be controlled; the main control chip 1 is further connected with a second group of relay driving circuits 3, when the input control instruction is a reverse rotation instruction, the main control chip 1 outputs a second driving instruction to the second group of relay driving circuits 3 (a second relay driving circuit 22 and a third relay driving circuit 31), after receiving the second driving instruction, the second group of relay 5 driving circuits 3 drive the connected second group of relays 5 (a third relay 43, a fourth relay 51 and a fifth relay 52) to be communicated, after the second group of relays 5 are communicated, a three-phase power supply is connected into the motor 7 to be controlled by adopting a second phase sequence, the first phase sequence and the second phase sequence comprise two phase sequences which are exchanged, the belt control motor rotates forwards when being connected into the three power supplies 6 of the first sequence, and rotates backwards when being connected into the three power supplies 6 of the second sequence. In this application, accomplish through main control chip 1 and relay and treat the positive and negative control of controlling motor 7, need not to exchange the wiring of motor to because need not use the contactor in the circuit, simplified the circuit structure who uses the positive and negative control system of contactor, make the circuit system volume diminish, portable. The relay works in a low current circuit, and the low current can be used for controlling high current by using the relay instead of a contactor.
Further, referring to fig. 2, the main control chip 1 includes: a positive electrode configuration pin PC4 of the first relay drive circuit 21, a negative electrode configuration pin PC5 of the first relay drive circuit 21, a positive electrode configuration pin PC3 of the second relay drive circuit 22, a negative electrode configuration pin PC2 of the second relay drive circuit 22, a positive electrode configuration pin PC1 of the third relay drive circuit 31 and a negative electrode configuration pin PC0 of the third relay drive circuit 31;
referring to fig. 3, the driving port 211 of the first relay driving circuit 21 is connected to a first relay driving positive electrode configuration pin PC4 through a fourth resistor R4, connected to a first relay driving negative electrode configuration pin PC5 through a fifth resistor R5, connected to a 12V power supply through a sixth resistor R6, and grounded through a ground line;
the driving port 221 of the second relay driving circuit 22 is connected to the second relay driving positive electrode configuration pin PC3 through a seventh resistor R7, connected to the second relay driving negative electrode configuration pin PC2 through an eighth resistor R8, connected to a 12V power supply through a ninth resistor R9, and grounded through a ground line;
the drive port 311 of the third relay drive circuit 31 is connected to a third relay drive positive electrode arrangement pin PC1 via a tenth resistor R10, to a third relay drive negative electrode arrangement pin PC0 via an eleventh resistor R11, to a power supply via a twelfth resistor R12, and to ground via a ground line.
The forward/reverse rotation control circuit in some embodiments, referring to fig. 4, further includes: a key circuit;
the key circuit is connected with the main control chip 1;
the key circuit includes: a first branch and a second branch;
the first branch and the second branch are mutually connected in parallel;
the first branch is provided with a first branch switch, a first contact and a second contact, wherein the first contact and the second contact are in contact with the first branch switch; when the first branch is communicated, a forward rotation instruction is sent to the main control chip 1;
a second branch switch, a third contact and a fourth contact which are in contact with the second branch switch are arranged on the second branch, the second branch switch is used for controlling the connection or disconnection of the second branch, the fourth contact is grounded, and the third contact is connected with the main control chip 1; and when the second branch is communicated, a reverse instruction is sent to the main control chip 1.
Further, the key circuit further includes: a third branch;
the first branch circuit, the second branch circuit and the third branch circuit are mutually connected in parallel;
a third branch switch, a fifth contact and a sixth contact which are in contact with the third branch switch are arranged on the third branch, the third branch switch is used for controlling the connection or disconnection of the third branch, the sixth contact is grounded, and the fifth contact is connected with the main control chip 1; when the third branch is communicated, a stop instruction is sent to the main control chip 1;
the main control chip 1 is used for outputting a disconnection instruction to the first group of relay drive circuits 2 or outputting a disconnection instruction to the second group of relay drive circuits 3 when the control instruction is a stop instruction;
the first group of relay driving circuits 2 are also used for driving the connected first group of relays 4 to be communicated after receiving the disconnection instruction;
the second group relay driving circuit 3 is also used for driving the connected second group relay 5 to be disconnected after receiving the disconnection instruction.
The first branch is connected to the PA2 pin of the main control chip 1, the second branch is connected to the PA4 pin of the main control chip 1, and the third branch is connected to the PA0 pin of the main control chip 1.
Wherein, the forward rotation instruction, the reverse rotation instruction and the stop instruction are all electric signals.
The main control chip 1 identifies the received control instruction according to the pin receiving the signal.
The first branch switch is UP in fig. 4, the second branch switch is DOWN in the figure, and the third branch switch is STOP in the figure.
Further, a program is configured in the main control chip 1, and when UP and STOP are pressed for a long time (for example, 5S is pressed at the same time), the main control chip 1 recognizes the electrical signal sent by the first branch switch as a reverse rotation command, and recognizes the electrical signal sent by the second branch switch as a forward rotation command. I.e. the flip direction setting.
The forward/reverse rotation control circuit in some embodiments, referring to fig. 5, further includes: a remote control signal receiving circuit 8;
the remote control signal receiving circuit 8 includes: an antenna 81, a remote control signal receiving chip 82;
the remote control signal receiving chip 82 is connected with the antenna 81 through a first capacitor C1; the remote control signal receiving chip 82 is also connected with the main control chip 1;
the remote control signal receiving chip 82 is configured to receive a forward rotation instruction or a forward rotation instruction through the antenna 81, and send the forward rotation instruction or the forward rotation instruction to the main control chip 1.
Further, the remote control signal receiving circuit 8 further includes: a first inductor L1, a second inductor L2, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5 and a crystal oscillator X1;
one end of the first inductor L1 is connected to the antenna 81, and the other end is grounded;
one end of the second inductor L2 is connected to the antenna 81 through the first capacitor C1, and the other end is grounded;
one end of the second capacitor C2 is connected to the antenna 81, and the other end is grounded;
one end of the third capacitor C3 is connected with the remote control signal receiving chip 82, and the other end is grounded;
one end of the fourth capacitor C4 is connected with the remote control signal receiving chip 82, and the other end is grounded;
one end of a fifth capacitor C5 is connected with the remote control signal receiving chip 82, and the other end is grounded;
one end of the crystal oscillator X1 is connected to the remote control signal receiving chip 82, and the other end is grounded.
In this embodiment, a wireless communication connection may be established with the remote control signal receiving circuit 8 through a remote controller. The remote controller sends a control instruction, and the antenna 81 of the remote control signal receiving circuit 8 receives the control instruction sent by the remote controller and sends the control instruction to the main control chip 1. Thereby realizing the remote control of the positive and negative rotation circuit.
The remote controller is similar to the key circuit and is provided with three branches which are respectively used for sending a forward rotation instruction, a reverse rotation instruction and a stop instruction through an antenna 81 when being communicated.
The forward/reverse rotation control circuit in some embodiments, referring to fig. 6, further includes: a positive and negative rotation indicating circuit;
the positive and negative rotation indicating circuit includes: a first indicator light LED1, a second indicator light LED2, a first resistor R1, a second resistor R2;
one end of the first indicator light LED1 is connected with the main control chip 1 through a first resistor R1, and the other end is grounded;
one end of the second indicator light LED2 is connected to the main control chip 1 through a second resistor R2, and the other end is grounded.
The forward/reverse rotation control circuit in some embodiments, referring to fig. 6, further includes: a power indication circuit; the power supply indicating circuit includes: a third indicator light LED3, a third resistor R3;
one end of the third indicator light LED3 is connected to the main control chip 1 through a third resistor R3, and the other end is grounded.
In some embodiments, referring to fig. 7, the main control chip 1 includes: the timing control circuit comprises a first grounding pin, a second grounding pin, a first timing configuration pin and a second timing configuration pin;
the first ground pin and the first timing arrangement pin are connected by a shorting cap, or,
the second ground pin and the second timing configuration pin are connected by a shorting cap, or,
the first ground pin and the first timing configuration pin are connected by a shorting cap and the second ground pin and the second timing configuration pin are connected by a shorting cap.
The first timing configuration pin is a PA7 pin, and the second timing configuration pin is a PA6 pin.
The main control chip 1 is configured that when a first timing configuration pin and a first grounding pin are connected through a short-circuit cap, an input signal of the first timing configuration pin is 0; when the second timing configuration pin and the second grounding pin are connected through the short-circuit cap, the input signal of the second timing configuration pin is 0. If not, the input signal is 1.
When the first ground pin and the first timing configuration pin are connected by a shorting cap and the second ground pin and the second timing configuration pin are connected by a shorting cap, the input signal is 0, 0.
When only the first ground pin and the first timing configuration pin are connected by the shorting cap, the input signal is 0, 1.
When only the second ground pin and the second timing configuration pin are connected by the shorting cap, the input signal is 1, 0.
The main control chip 1 is configured to:
when the received signal is 0, a first driving instruction is output to the first group of relay 4 driving circuit 2 after delaying for 20min, or a second driving instruction is output to the second group of relay 5 driving circuit 3.
When the received signal is 0,1, a first driving instruction is output to the first group of relay 4 driving circuit 2 after the time delay of 15min, or a second driving instruction is output to the second group of relay 5 driving circuit 3.
When the received signal is 1,0, a first driving instruction is output to the first group of relay 4 driving circuit 2 after 10min of delay, or a second driving instruction is output to the second group of relay 5 driving circuit 3.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (10)
1. A positive and negative rotation control circuit, comprising:
the main control chip is used for inputting a control instruction, wherein the control instruction comprises a forward rotation instruction or a reverse rotation instruction, outputting a first driving instruction to the first group of relay driving circuits when the control instruction is the forward rotation instruction, and outputting a second driving instruction to the second group of relay driving circuits when the control instruction is the reverse rotation instruction;
the first group of relay driving circuits are connected with the main control chip and used for driving the first group of relays connected to be communicated after the first driving instruction is received;
the second group of relay driving circuits are connected with the main control chip and used for driving the second group of relays connected to be communicated after the second driving instruction is received;
the first group of relays are connected with the first group of relay driving circuits and used for being communicated under the driving of the first group of relay driving circuits, and after the first group of relays are communicated, a three-phase power supply is connected to a motor to be controlled by adopting a first phase sequence;
the second group of relays are connected with the second group of relay driving circuits and used for being communicated under the driving of the second group of relay driving circuits, and after the second group of relays are communicated, a three-phase power supply is connected to a motor to be controlled by adopting a second phase sequence;
wherein the first phase sequence and the second phase sequence comprise two phase sequences that are reversed.
2. Positive and negative rotation control circuit according to claim 1,
the first set of relay drive circuits includes: a first relay drive circuit and a second relay drive circuit;
the second group of relay drive circuits includes: a second relay drive circuit and a third relay drive circuit;
the first set of relays includes: a first relay, a second relay and a third relay;
the second set of relays includes: a third relay, a fourth relay and a fifth relay;
the first relay and the second relay are connected in parallel and then connected to a driving port of the first relay driving circuit;
the third relay is connected to a driving port of the second relay driving circuit;
the fourth relay and the fifth relay are connected in parallel and then connected to a driving port of the third relay driving circuit;
the first relay, the second relay, the third relay, the fourth relay and the fifth relay are respectively provided with two contacts;
the three-phase power supply comprises a first power supply output end, a second power supply output end and a third power supply output end;
the motor to be controlled comprises a first power supply input end, a second power supply input end and a third power supply input end;
one contact of the first relay is connected with the first power supply output end, and the other contact of the first relay is connected with the first power supply input end;
one contact of the second relay is connected with the second power supply output end, and the other contact of the second relay is connected with the second power supply input end;
one contact of the third relay is connected with the third power supply output end, and the other contact of the third relay is connected with the third power supply input end;
one contact of the fourth relay is connected with the first power supply output end, and the other contact of the fourth relay is connected with the second power supply input end;
one contact of the fifth relay is connected with the second power supply output end, and the other contact of the fifth relay is connected with the first power supply input end.
3. The positive and negative rotation control circuit according to claim 1, further comprising: a key circuit;
the key circuit is connected with the main control chip;
the key circuit includes: a first branch and a second branch;
the first branch and the second branch are mutually connected in parallel;
the first branch circuit is provided with a first branch circuit switch, a first contact and a second contact, the first contact and the second contact are in contact with the first branch circuit switch, the first branch circuit switch is used for controlling connection or disconnection of the first branch circuit, the second contact is grounded, and the first contact is connected with the main control chip; when the first branch is communicated, the forward rotation instruction is sent to the main control chip;
the second branch circuit is provided with a second branch circuit switch, a third contact and a fourth contact which are in contact with the second branch circuit switch, the second branch circuit switch is used for controlling the connection or disconnection of the second branch circuit, the fourth contact is grounded, and the third contact is connected with the main control chip; and when the second branch is communicated, the reverse instruction is sent to the main control chip.
4. The positive and negative rotation control circuit according to claim 3, wherein said key circuit further comprises: a third branch;
the first branch, the second branch and the third branch are mutually connected in parallel;
a third branch switch, a fifth contact and a sixth contact which are in contact with the third branch switch are arranged on the third branch, the third branch switch is used for controlling the connection or disconnection of the third branch, the sixth contact is grounded, and the fifth contact is connected with the main control chip; when the third branch is communicated, a stop instruction is sent to the main control chip;
the main control chip is used for outputting a disconnection instruction to the first group of relay driving circuits or outputting a disconnection instruction to the second group of relay driving circuits when the control instruction is a stop instruction;
the first group of relay driving circuits are also used for driving the connected first group of relays to be connected after receiving the disconnection instruction;
and the second group of relay driving circuits are also used for driving the second group of relays connected to be disconnected after receiving the disconnection instruction.
5. The positive and negative rotation control circuit according to claim 1, further comprising: a remote control signal receiving circuit;
the remote control signal receiving circuit includes: the antenna is used for receiving the remote control signal;
the remote control signal receiving chip is connected with the antenna through a first capacitor; the remote control signal receiving chip is also connected with the main control chip;
the remote control signal receiving chip is used for receiving the forward rotation instruction or the forward rotation instruction through the antenna and sending the forward rotation instruction or the forward rotation instruction to the main control chip.
6. The positive and negative rotation control circuit according to claim 5, wherein said remote control signal receiving circuit further comprises: the circuit comprises a first inductor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor and a crystal oscillator;
one end of the first inductor is connected with the antenna, and the other end of the first inductor is grounded;
one end of the second inductor is connected with the antenna through the first capacitor, and the other end of the second inductor is grounded;
one end of the second capacitor is connected with the antenna, and the other end of the second capacitor is grounded;
one end of the third capacitor is connected with the remote control signal receiving chip, and the other end of the third capacitor is grounded;
one end of the fourth capacitor is connected with the remote control signal receiving chip, and the other end of the fourth capacitor is grounded;
one end of the fifth capacitor is connected with the remote control signal receiving chip, and the other end of the fifth capacitor is grounded;
one end of the crystal oscillator is connected with the remote control signal receiving chip, and the other end of the crystal oscillator is grounded.
7. The positive and negative rotation control circuit according to claim 1, further comprising: a positive and negative rotation indicating circuit;
the positive and negative rotation indicating circuit comprises: the circuit comprises a first indicator light, a second indicator light, a first resistor and a second resistor;
one end of the first indicator lamp is connected with the main control chip through the first resistor, and the other end of the first indicator lamp is grounded;
one end of the second indicator light is connected with the main control chip through the second resistor, and the other end of the second indicator light is grounded.
8. The positive and negative rotation control circuit according to claim 1, further comprising: a power indication circuit; the power indication circuit includes: a third indicator light, a third resistor;
one end of the third indicator light is connected with the main control chip through the third resistor, and the other end of the third indicator light is grounded.
9. The positive and negative rotation control circuit according to claim 1, wherein the main control chip comprises: the timing control circuit comprises a first grounding pin, a second grounding pin, a first timing configuration pin and a second timing configuration pin;
the first ground pin and the first timing configuration pin are connected by a shorting cap, or,
the second ground pin and the second timing configuration pin are connected by a shorting cap, or,
the first ground pin and the first timing configuration pin are connected by a shorting cap and the second ground pin and the second timing configuration pin are connected by a shorting cap.
10. The positive and negative rotation control circuit according to claim 2, wherein the main control chip comprises: the relay driving circuit comprises a first relay driving circuit positive electrode configuration pin, a first relay driving circuit negative electrode configuration pin, a second relay driving circuit positive electrode configuration pin, a second relay driving circuit negative electrode configuration pin, a third relay driving circuit positive electrode configuration pin and a third relay driving circuit negative electrode configuration pin;
the driving port of the first relay driving circuit is connected with the first relay driving positive electrode configuration pin through a fourth resistor, connected with the first relay driving negative electrode configuration pin through a fifth resistor, connected with a power supply through a sixth resistor and grounded through a grounding wire;
the driving port of the second relay driving circuit is connected with the second relay driving positive electrode configuration pin through a seventh resistor, connected with the second relay driving negative electrode configuration pin through an eighth resistor, connected with a power supply through a ninth resistor and grounded through a grounding wire;
the driving port of the third relay driving circuit is connected with the third relay driving positive electrode configuration pin through a tenth resistor, connected with the third relay driving negative electrode configuration pin through an eleventh resistor, connected with a power supply through a twelfth resistor and grounded through a grounding wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921795228.9U CN210724618U (en) | 2019-10-23 | 2019-10-23 | Forward and reverse rotation control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921795228.9U CN210724618U (en) | 2019-10-23 | 2019-10-23 | Forward and reverse rotation control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN210724618U true CN210724618U (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921795228.9U Active CN210724618U (en) | 2019-10-23 | 2019-10-23 | Forward and reverse rotation control circuit |
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| CN (1) | CN210724618U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111684961A (en) * | 2020-06-23 | 2020-09-22 | 温州大学 | Greenhouse multi-mode intelligent control system |
| CN111697902A (en) * | 2020-06-23 | 2020-09-22 | 温州大学 | Three-phase motor control circuit based on relay |
-
2019
- 2019-10-23 CN CN201921795228.9U patent/CN210724618U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111684961A (en) * | 2020-06-23 | 2020-09-22 | 温州大学 | Greenhouse multi-mode intelligent control system |
| CN111697902A (en) * | 2020-06-23 | 2020-09-22 | 温州大学 | Three-phase motor control circuit based on relay |
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