A wireless remote control circuit

Abstract

The utility model discloses a wireless remote control circuit, including wireless transmitter, receiver and the frequency converter for controlling motor's running speed, wireless transmitter and receiver wireless connection, receiver and frequency converter electricity is connected, wireless transmitter is infrared button remote control transmitting circuit, the receiver includes photo -coupler isolation relay receiving module, high -speed operation pilot lamp circuit, medium -speed operation pilot lamp circuit, low -speed operation pilot lamp circuit, controller, the utility model discloses a frequency converter through the size of change frequency, can change motor running speed, with wireless transmitter control the frequency converter of large current, is safe and labor -saving.

Description

Technical Field

[0001] This utility model relates to the field of remote control circuit technology, and in particular to the design of a wireless remote control circuit. Background Technology

[0002] Remote operation is required at flood control sites, which requires staff to travel back and forth to observe the site and return to the back office for remote control. This is very laborious and inconvenient. In addition, existing technologies usually only have simple switching circuits, which cannot adjust the pumping speed according to the water level or switch between different speeds as needed on site. Therefore, staff need to be on duty at the site for a long time, which is very labor-intensive. Utility Model Content

[0003] The purpose of this invention is to solve the problems mentioned in the background art and to provide a wireless remote control circuit.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0005] A wireless remote control circuit includes a wireless transmitter, a receiver, and a frequency converter for controlling the operating speed of a motor. The wireless transmitter is wirelessly connected to the receiver, and the receiver is electrically connected to the frequency converter. The wireless transmitter is an infrared button remote control transmitting circuit. The receiver includes an optocoupler-isolated relay receiving module, a high-speed operation indicator circuit, a medium-speed operation indicator circuit, a low-speed operation indicator circuit, and a controller. The high-speed, medium-speed, and low-speed operation indicator circuits are electrically connected to the optocoupler-isolated relay receiving module, and are electrically connected to the controller. The high-speed and low-speed operation indicator circuits are electrically connected to the medium-speed operation indicator circuit.

[0006] Preferably, the optocoupler isolation relay receiving module includes a receiving chip U1, a relay KA1, a relay KA2, and a relay KA3. The COM1, COM2, COM3, and NO5 terminals of the receiving chip U1 are electrically connected to the COM4 terminal of the receiving chip U1, the NC4 terminal of the receiving chip U1 is electrically connected to the COM6 terminal, the NO1 terminal of the receiving chip U1 is electrically connected to the NO2 terminal, the COM2 terminal of the receiving chip U1 is electrically connected to the NC3 terminal, the NO2 terminal of the receiving chip U1 is electrically connected to one end of the coil of the relay KA1 through the coil of the relay KA2, the other end of the coil of the relay KA1 is electrically connected to the COM5 terminal of the receiving chip U1, the COM3 terminal of the receiving chip U1 is electrically connected to one end of the coil of the relay KA1 through the coil of the relay KA3, and the COM4, ​​NC6, coils of the relay KA1, and NC6 terminals of the receiving chip U1 are all electrically connected to the controller.

[0007] Preferably, the high-speed operation indicator circuit includes switches S11, S12, and S13, and a high-speed indicator LED H1. The stationary contact of the relay KA1 is electrically connected to a 24V power supply, and the moving contact of the relay KA1 is electrically connected to the COM1 terminal of the receiving chip U1 through the high-speed indicator LED H1. The two ends of the switch S11 are respectively electrically connected to the control signal terminals S1 and S3 of the controller. One end of the switch S12 is electrically connected to the COM1 terminal of the receiving chip U1, and the other end of the switch S12 is electrically connected to the control signal terminal S3 of the controller. One end of the switch S13 is electrically connected to the control signal terminal S3 of the controller, and the other end of the switch S13 is electrically connected to the medium-speed operation indicator circuit.

[0008] Preferably, the medium-speed operation indicator circuit includes switches S21, S22, and S23, and a medium-speed indicator LED H2. The stationary contact of the relay KA2 is electrically connected to a 24V power supply, and the moving contact of the relay KA2 is electrically connected to the COM1 terminal of the receiving chip U1 through the medium-speed indicator LED H2. The two ends of the switch S21 are respectively connected to the control signal terminals S1 and S4 of the controller. One end of the switch S22 is electrically connected to the COM1 terminal of the receiving chip U1, and the other end of the switch S22 is electrically connected to the control signal terminal S4 of the controller. One end of the switch S23 is electrically connected to the other end of the switch S13, and the other end of the switch S23 is electrically connected to the low-speed operation indicator circuit.

[0009] Preferably, the low-speed operation indicator circuit includes switches S31, S32, and S33, and a low-speed indicator LED H3. The stationary contact of the relay KA3 is electrically connected to a 24V power supply, and the moving contact of the relay KA3 is electrically connected to the COM1 terminal of the receiving chip U1 through the low-speed indicator LED H3. The two ends of the switch S31 are electrically connected to the control signal terminals S1 and S5 of the controller, respectively. One end of the switch S32 is electrically connected to the COM1 terminal of the receiving chip U1, and the other end of the switch S32 is electrically connected to the control signal terminal S4 of the controller. One end of the switch S33 is connected to the other end of the switch S23, and the other end of the switch S33 is connected to the DCM4 terminal of the controller.

[0010] Preferably, the wireless transmitter includes an encoding chip U2, a button module 11, a transmitting module, and an oscillation resistor DOCT. The A0, A1, A2, A3, A4, A5, A6, A7, and VSS terminals of the encoding chip U2 are grounded respectively. The TE terminal of the encoding chip U2 is connected to ground GND. The OSC1 and OSC2 terminals of the encoding chip U2 are electrically connected through the oscillation resistor DOCT. The DOUt terminal of the encoding chip U2 is electrically connected to the transmitting module, and the VSS terminal of the encoding chip U2 is electrically connected to the button module.

[0011] Preferably, the button module includes resistors R21, R22, R23, R24, R25, R26, and R3, a transistor Q1, an LED1, switches S1, S2, S3, S4, S5, and S6, and a power supply VCC. One end of each of the resistors R21, R22, R23, R24, R25, and R26 is connected to ground GND. One end of resistor R22, the other end of resistor R23, the other end of resistor R24, the other end of resistor R25, and the other end of resistor R26 are respectively connected to the base of transistor Q1 through switches S1, S2, S3, S4, S5, and S6. The base and collector of transistor Q1 are connected through resistor R3. The emitter of transistor Q1 is connected to the VSS terminal of encoding chip U2. The collector of transistor Q1 is connected to power supply VCC through lamp LED1. Preferably, the transmitting module includes resistor RS, resistor R5, transistors Q2 and Q3, capacitors C1, C2, and C3, inductor L1, wire E, and crystal oscillator Y1. The DOUT terminal of the encoding chip U2 is electrically connected to the base of transistor Q3 through resistor RS. The emitter of transistor Q3 is floating. The collector of transistor Q3 is electrically connected to the emitter of transistor Q2. The collector of transistor Q3 is electrically connected to the power supply VCC through capacitor C1. The collector of transistor Q3 is electrically connected to the ground terminal of crystal oscillator Y1. Resistor R5 is electrically connected between the input and output terminals of crystal oscillator Y1. One end of resistor R5 is electrically connected to the base of transistor Q2, and the other end of resistor R5 is electrically connected to power supply VCC. The collector of transistor Q2 is electrically connected to power supply VCC through inductor L1. Inductor L1 is connected in parallel with capacitor C2. The collector of transistor Q2 is connected to the transmitter terminal via capacitor C3 to transmit signals.

[0012] The beneficial effects of this utility model are as follows: This utility model sends a signal to a receiver via a wireless transmitter, and then the receiver sends it to the frequency converter. The control line inside the frequency converter drives the high-voltage output to work. The frequency converter can change the running speed of the motor by changing the frequency. Using a wireless transmitter to control a high-current frequency converter is both safe and labor-saving. When the frequency converter is running at high speed, the high-speed indicator LED H1 lights up; when the frequency converter is running at medium speed, the medium-speed indicator LED H2 lights up; and when the frequency converter is running at low speed, the low-speed indicator LED H3 lights up. Attached Figure Description

[0013] Figure 1 This is a system block diagram of a wireless remote control circuit according to an embodiment of the present invention;

[0014] Figure 2This is a circuit diagram of a wireless transmitter according to an embodiment of the present invention;

[0015] Figure 3 This is a circuit diagram of an optocoupler isolation relay receiving module according to an embodiment of the present invention;

[0016] Figure 4 The circuit diagrams are of a high-speed operation indicator circuit, a medium-speed operation indicator circuit, and a low-speed operation indicator circuit according to an embodiment of the present invention.

[0017] Figure 5 This is a schematic diagram of a controller according to an embodiment of the present invention. Detailed Implementation

[0018] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0019] like Figure 1 As shown, a wireless remote control circuit includes a wireless transmitter 1, a receiver 2, and a frequency converter 3 for controlling the operating speed of a motor. The wireless transmitter 1 is wirelessly connected to the receiver 2, and the receiver 2 is electrically connected to the frequency converter 3. The wireless transmitter 1 is an infrared button remote control transmitting circuit. The receiver 2 includes an optocoupler isolation relay receiving module 21, a high-speed operation indicator circuit 22, a medium-speed operation indicator circuit 23, a low-speed operation indicator circuit 24, and a controller 25. The high-speed operation indicator circuit 22, the medium-speed operation indicator circuit 23, and the low-speed operation indicator circuit 24 are each electrically connected to the optocoupler isolation relay receiving module 21. The optocoupler isolation relay receiving module 21, the high-speed operation indicator circuit 22, the medium-speed operation indicator circuit 23, and the low-speed operation indicator circuit 24 are each electrically connected to the controller 25. The high-speed operation indicator circuit 22 and the low-speed operation indicator circuit 24 are each electrically connected to the medium-speed operation indicator circuit 23.

[0020] like Figure 3As shown, the optocoupler isolation relay receiving module 21 includes a receiving chip U1, a relay KA1, a relay KA2, and a relay KA3. The COM1, COM2, COM3, and NO5 terminals of the receiving chip U1 are electrically connected to the COM4 terminal of the receiving chip U1, the NC4 terminal of the receiving chip U1 is electrically connected to the COM6 terminal, the NO1 terminal of the receiving chip U1 is electrically connected to the NO2 terminal, the COM2 terminal of the receiving chip U1 is electrically connected to the NC3 terminal, the NO2 terminal of the receiving chip U1 is electrically connected to one end of the coil of the relay KA1 through the coil of the relay KA2, the other end of the coil of the relay KA1 is electrically connected to the COM5 terminal of the receiving chip U1, the COM3 terminal of the receiving chip U1 is electrically connected to one end of the coil of the relay KA1 through the coil of the relay KA3, and the COM4, ​​NC6, coils of the relay KA1, and NC6 terminals of the receiving chip U1 are all electrically connected to the controller 25.

[0021] like Figure 4 As shown, the high-speed operation indicator circuit 22 includes switches S11, S12, and S13, and a high-speed indicator LED H1. The stationary contact of the relay KA1 is electrically connected to a 24V power supply, and the moving contact of the relay KA1 is electrically connected to the COM1 terminal of the receiving chip U1 through the high-speed indicator LED H1. The two ends of the switch S11 are respectively electrically connected to the control signal terminals S1 and S3 of the controller 25. One end of the switch S12 is electrically connected to the COM1 terminal of the receiving chip U1, and the other end of the switch S12 is electrically connected to the control signal terminal S3 of the controller 25. One end of the switch S13 is electrically connected to the control signal terminal S3 of the controller 25, and the other end of the switch S13 is electrically connected to the medium-speed operation indicator circuit 23.

[0022] like Figure 4 As shown, the medium-speed operation indicator circuit 23 includes switches S21, S22, and S23, and a medium-speed indicator LED H2. The stationary contact of the relay KA2 is electrically connected to a 24V power supply, and the moving contact of the relay KA2 is electrically connected to the COM1 terminal of the receiving chip U1 through the medium-speed indicator LED H2. The two ends of the switch S21 are respectively connected to the control signal terminals S1 and S4 of the controller 25. One end of the switch S22 is electrically connected to the COM1 terminal of the receiving chip U1, and the other end of the switch S22 is electrically connected to the control signal terminal S4 of the controller 25. One end of the switch S23 is electrically connected to the other end of the switch S13, and the other end of the switch S23 is electrically connected to the low-speed operation indicator circuit 24.

[0023] like Figure 4As shown, the low-speed operation indicator circuit 24 includes switches S31, S32, and S33, and a low-speed indicator LED H3. The stationary contact of the relay KA3 is electrically connected to a 24V power supply, and the moving contact of the relay KA3 is electrically connected to the COM1 terminal of the receiving chip U1 through the low-speed indicator LED H3. The two ends of the switch S31 are electrically connected to the control signal terminals S1 and S5 of the controller 25, respectively. One end of the switch S32 is electrically connected to the COM1 terminal of the receiving chip U1, and the other end of the switch S32 is electrically connected to the control signal terminal S4 of the controller 25. One end of the switch S33 is connected to the other end of the switch S23, and the other end of the switch S33 is connected to the DCM4 terminal of the controller 25.

[0024] like Figure 2 As shown, the wireless transmitter 1 includes an encoding chip U2, a button module 11, a transmitting module 12, and an oscillation resistor DOCT. The A0, A1, A2, A3, A4, A5, A6, A7, and VSS terminals of the encoding chip U2 are grounded respectively. The TE terminal of the encoding chip U2 is connected to ground GND. The OSC1 and OSC2 terminals of the encoding chip U2 are electrically connected through the oscillation resistor DOCT. The DOUt terminal of the encoding chip U2 is electrically connected to the transmitting module 12. The VSS terminal of the encoding chip U2 is electrically connected to the button module 11.

[0025] like Figure 2 As shown, the button module 11 includes resistors R21, R22, R23, R24, R25, R26, and R3, transistor Q1, LED1, switches S1, S2, S3, S4, S5, and S6, and a power supply VCC. One end of each of the resistors R21, R22, R23, R24, R25, and R26 is connected to ground GND. The other end of resistor R21... One end of resistor R22, the other end of resistor R23, the other end of resistor R24, the other end of resistor R25, and the other end of resistor R26 are respectively connected to the base of transistor Q1 through switches S1, S2, S3, S4, S5, and S6. The base and collector of transistor Q1 are connected through resistor R3. The emitter of transistor Q1 is connected to the VSS terminal of encoding chip U2. The collector of transistor Q1 is connected to power supply VCC through lamp LED1.

[0026] like Figure 2As shown, the transmitting module 12 includes resistors RS and R5, transistors Q2 and Q3, capacitors C1, C2, and C3, inductor L1, wire E, and crystal oscillator Y1. The DOUT terminal of the encoding chip U2 is electrically connected to the base of transistor Q3 through resistor RS. The emitter of transistor Q3 is floating. The collector of transistor Q3 is electrically connected to the emitter of transistor Q2. The collector of transistor Q3 is electrically connected to the power supply VCC through capacitor C1. The collector of transistor Q3 is electrically connected to the ground terminal of crystal oscillator Y1. Resistor R5 is electrically connected between the input and output terminals of crystal oscillator Y1. One end of resistor R5 is electrically connected to the base of transistor Q2, and the other end of resistor R5 is electrically connected to power supply VCC. The collector of transistor Q2 is electrically connected to power supply VCC through inductor L1. Inductor L1 is connected in parallel with capacitor C2. The collector of transistor Q2 is connected to the transmitter terminal via capacitor C3 to transmit signals.

[0027] When the high-speed indicator LED H1 is lit, it indicates that the frequency converter is running at high speed; when the low-speed indicator LED H3 is lit, it indicates that the frequency converter is running at low speed; when the medium-speed indicator LED H2 is lit, it indicates that the frequency converter is running at medium speed.

[0028] This invention is primarily used in disaster relief and emergency response. It allows for remote operation at flood control sites, eliminating the need for back-and-forth travel between the site and control center. The invention can adjust the pumping speed according to water depth and is equipped with high, medium, and low speed settings. In operation, the remote control transmits a wireless pulse signal (water level signal) to receiver 2. The receiver then transmits the signal via a 24V DC low-voltage cable to the inverter's control circuit, thereby enabling the inverter to start, stop, and switch between its three speeds.

[0029] like Figures 1 to 5 As shown, the transmitting module 12 transmits a wireless pulse signal (water level signal) to the optocoupler isolation relay receiving module 21. The optocoupler isolation relay receiving module 21 receives the signal and transmits it to the inverter controller via a 24V DC low-voltage cable, thereby enabling the inverter to run, stop, and switch between three speeds.

[0030] A frequency converter can change the speed of a motor by changing the frequency, thus changing the pumping speed at any time. Using a remote control circuit to control a high-current frequency converter is both safe and labor-saving.

[0031] It should be noted that the above examples are only one specific embodiment of this utility model. Obviously, this utility model is not limited to the above embodiments and can have many variations. In short, all variations that can be directly derived or conceived by those skilled in the art from the content disclosed in this utility model should be considered within the protection scope of this utility model.

Claims

1. A wireless remote control circuit, characterized by The device includes a wireless transmitter (1), a receiver (2), and a frequency converter (3) for controlling the running speed of the motor. The wireless transmitter (1) is wirelessly connected to the receiver (2), and the receiver (2) is electrically connected to the frequency converter (3). The wireless transmitter (1) is an infrared button remote control transmitting circuit. The receiver (2) includes an optocoupler isolation relay receiving module (21), a high-speed running indicator circuit (22), a medium-speed running indicator circuit (23), a low-speed running indicator circuit (24), and a controller (25). The high-speed running indicator circuit (22), the medium-speed running indicator circuit (23), and the low-speed running indicator circuit (24) are electrically connected to the optocoupler isolation relay receiving module (21), and the optocoupler isolation relay receiving module (21), the high-speed running indicator circuit (22), the medium-speed running indicator circuit (23), and the low-speed running indicator circuit (24) are electrically connected to the controller (25). The high-speed running indicator circuit (22) and the low-speed running indicator circuit (24) are electrically connected to the medium-speed running indicator circuit (23).

2. A wireless remote control circuit according to claim 1, wherein, The optocoupler isolation relay receiving module (21) includes a receiving chip U1, a relay KA1, a relay KA2, and a relay KA3. The COM1, COM2, COM3, and NO5 terminals of the receiving chip U1 are electrically connected to the COM4 terminal of the receiving chip U1, the NC4 terminal of the receiving chip U1 is electrically connected to the COM6 terminal, the NO1 terminal of the receiving chip U1 is electrically connected to the NO2 terminal, the COM2 terminal of the receiving chip U1 is electrically connected to the NC3 terminal, the NO2 segment of the receiving chip U1 is electrically connected to one end of the coil of the relay KA1 through the coil of the relay KA2, the other end of the coil of the relay KA1 is electrically connected to the COM5 terminal of the receiving chip U1, the COM3 terminal of the receiving chip U1 is electrically connected to one end of the coil of the relay KA1 through the coil of the relay KA3, and the COM4, ​​NC6, one end of the coil of the relay KA1, and the NC6 terminal of the receiving chip U1 are all electrically connected to the controller (25).

3. A wireless remote control circuit according to claim 2, wherein, The high-speed operation indicator circuit (22) includes switches S11, S12, S13 and a high-speed indicator LED H1. The stationary contact of the relay KA1 is electrically connected to a 24V power supply. The moving contact of the relay KA1 is electrically connected to the COM1 terminal of the receiving chip U1 through the high-speed indicator LED H1. The two ends of the switch S11 are respectively electrically connected to the control signal terminals S1 and S3 of the controller (25). One end of the switch S12 is electrically connected to the COM1 terminal of the receiving chip U1. The other end of the switch S12 is electrically connected to the control signal terminal S3 of the controller (25). One end of the switch S13 is electrically connected to the control signal terminal S3 of the controller (25). The other end of the switch S13 is electrically connected to the medium-speed operation indicator circuit (23).

4. A wireless remote control circuit according to claim 3, wherein, The medium-speed operation indicator circuit (23) includes switches S21, S22, S23 and a medium-speed indicator LED H2. The stationary contact of the relay KA2 is electrically connected to a 24V power supply. The moving contact of the relay KA2 is electrically connected to the COM1 terminal of the receiving chip U1 through the medium-speed indicator LED H2. The two ends of the switch S21 are respectively connected to the control signal terminals S1 and S4 of the controller (25). One end of the switch S22 is electrically connected to the COM1 terminal of the receiving chip U1. The other end of the switch S22 is electrically connected to the control signal terminal S4 of the controller (25). One end of the switch S23 is electrically connected to the other end of the switch S13. The other end of the switch S23 is electrically connected to the low-speed operation indicator circuit (24).

5. A wireless remote control circuit according to claim 4, wherein, The low-speed operation indicator circuit (24) includes switches S31, S32, S33 and a low-speed indicator LED H3. The stationary contact of the relay KA3 is electrically connected to a 24V power supply. The moving contact of the relay KA3 is electrically connected to the COM1 terminal of the receiving chip U1 through the low-speed indicator LED H3. The two ends of the switch S31 are electrically connected to the control signal terminals S1 and S5 of the controller (25) respectively. One end of the switch S32 is electrically connected to the COM1 terminal of the receiving chip U1. The other end of the switch S32 is electrically connected to the control signal terminal S4 of the controller (25). One end of the switch S33 is connected to the other end of the switch S23. The other end of the switch S33 is connected to the DCM4 terminal of the controller (25).

6. The wireless remote control circuit of claim 1, wherein, The wireless transmitter (1) includes an encoding chip U2, a button module (11), a transmitting module (12), and an oscillation resistor DOCT. The A0, A1, A2, A3, A4, A5, A6, A7, and VSS terminals of the encoding chip U2 are grounded respectively. The TE terminal of the encoding chip U2 is connected to ground GND. The OSC1 and OSC2 terminals of the encoding chip U2 are electrically connected through the oscillation resistor DOCT. The DOUt terminal of the encoding chip U2 is electrically connected to the transmitting module (12). The VSS terminal of the encoding chip U2 is electrically connected to the button module (11).

7. A wireless remote control circuit according to claim 6, wherein, The button module (11) includes resistors R21, R22, R23, R24, R25, R26, and R3, transistor Q1, LED1, switches S1, S2, S3, S4, S5, and S6, and a power supply VCC. One end of each of the resistors R21, R22, R23, R24, R25, and R26 is connected to ground GND. The other end of resistor R21... One end of resistor R22, the other end of resistor R23, the other end of resistor R24, the other end of resistor R25, and the other end of resistor R26 are respectively connected to the base of transistor Q1 through switches S1, S2, S3, S4, S5, and S6. The base and collector of transistor Q1 are connected through resistor R3. The emitter of transistor Q1 is connected to the VSS terminal of encoding chip U2. The collector of transistor Q1 is connected to power supply VCC through lamp LED1.

8. A wireless remote control circuit according to claim 7, wherein, The transmitting module (12) includes resistors RS and R5, transistors Q2 and Q3, capacitors C1, C2, and C3, inductor L1, wire E, and crystal oscillator Y1. The DOUt terminal of the encoding chip U2 is electrically connected to the base of transistor Q3 through resistor RS. The emitter of transistor Q3 is left floating. The collector of transistor Q3 is electrically connected to the emitter of transistor Q2. The collector of transistor Q3 is electrically connected to power supply VCC through capacitor C1. The collector of transistor Q3 is electrically connected to the ground terminal of crystal oscillator Y1. Resistor R5 is electrically connected between the input and output terminals of crystal oscillator Y1. One end of resistor R5 is electrically connected to the base of transistor Q2, and the other end of resistor R5 is electrically connected to power supply VCC. The collector of transistor Q2 is electrically connected to power supply VCC through inductor L1. Inductor L1 is connected in parallel with capacitor C2. The collector of transistor Q2 is connected to the transmitter terminal via capacitor C3 to transmit signals.

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