Drive-by-wire circuit

Abstract

The invention provides a drive-by-wire circuit. The drive-by-wire circuit comprises a main control unit; first and second control ports; first and second switch modules; and a first controlled device and a second controlled device. The main control unit is used for sending a first control signal to the first control port, and / or sending a second control signal to the second control port; if the first control port monitors a first control signal and the alternating current power supply signal meets a first preset condition, the first switch module is conducted through the control line so as to start the first controlled equipment; if the second control port monitors a second control signal and the AC power supply signal satisfies a second preset condition, the second control port conducts a second switch module through a control line so as to start a second controlled device; the first preset condition and the second preset condition are mutually exclusive. Through the above structure, the control of the first controlled device and the second controlled device can be realized through one control line, so that the problem that the control of a plurality of electric devices cannot be satisfied due to the fact that the number of reserved electric wires is small is solved.

Description

Technical Field

[0001] The present application relates to the field of circuit control technology, and in particular to a line control circuit. Background Art

[0002] At present, one electrical device usually requires one power line and one control line for control. When there are multiple electrical devices, a corresponding number of power lines and control lines need to be prepared for control. However, this control structure cannot be implemented when the original control lines are not enough to cover the control devices. Summary of the invention

[0003] The present application provides a wire control circuit to solve the problem that the number of wires does not meet the needs of electrical equipment.

[0004] In a first aspect, the present application provides a line control circuit, including: a main control unit, a first control port, a second control port, a first switch module, a second switch module, a first controlled device, and a second controlled device;

[0005] The main control unit is connected to the first control port and the second control port respectively, and the first control port and the second control port are connected to the first switch module and the second switch module respectively through a control line; the first switch module is connected to the first controlled device; and the second switch module is connected to the second controlled device;

[0006] The main control unit is used to send a first control signal to the first control port, and / or send a second control signal to the second control port;

[0007] The first control port is used to obtain an AC power signal, and if the first control signal is detected and the AC power signal meets a first preset condition, the first switch module is turned on through the control line;

[0008] The second control port is used to obtain an AC power signal. If the second control signal is detected and the AC power signal meets a second preset condition, the second switch module is turned on through the control line; the first preset condition and the second preset condition are mutually exclusive;

[0009] The first controlled device is turned on when the first switch module is turned on; the second controlled device is turned on when the second switch module is turned on.

[0010] In a possible implementation manner, both the first control signal and the second control signal are high level signals;

[0011] The first control port includes a first switch tube circuit; a first input end of the first switch tube circuit is connected to the main control unit, and a second input end of the first switch tube circuit is connected to a neutral line of an AC power source; the neutral line is grounded;

[0012] The second control port includes a second switch tube circuit, wherein a first input end of the second switch tube circuit is connected to the main control unit, and a second input end of the second switch tube circuit is grounded;

[0013] The first switch tube circuit is turned on when the high level signal and the first zero line signal are connected; the second switch tube circuit is turned on when the high level signal and the second zero line signal are connected;

[0014] When the first zero line signal is a positive zero line signal, the second zero line signal is a negative zero line signal; when the first zero line signal is a negative zero line signal, the second zero line signal is a positive zero line signal.

[0015] In a possible implementation, the first switch tube circuit includes a first switch tube, a first resistor, a second resistor, a first diode, and a second diode;

[0016] The first end of the first diode is the first input end of the first switch tube circuit, the second end of the first diode is respectively connected to the first end of the first switch tube and the first end of the first resistor, the second end of the first switch tube is respectively connected to the second end of the first resistor and the first end of the second resistor, and the second end of the second resistor is the second input end of the first switch tube circuit; the third end of the first switch tube is connected to the first end of the second diode, and the second end of the second diode is connected to the control line.

[0017] In a possible implementation manner, the first switch tube is an NMOS tube.

[0018] In a possible implementation, the second switch tube circuit includes a second switch tube, a third resistor, a fourth resistor, a third diode and a fourth diode;

[0019] The first end of the third diode is the first input end of the second switch tube circuit, the second end of the third diode is respectively connected to the third end of the second switch tube and the first end of the third resistor, the second end of the second switch tube is respectively connected to the second end of the third resistor and the first end of the fourth resistor, the second end of the fourth resistor is the second input end of the second switch tube circuit; the first end of the second switch tube is connected to the first end of the fourth diode, and the second end of the fourth diode is connected to the control line.

[0020] In a possible implementation manner, the second switch tube is a PMOS tube.

[0021] In a possible implementation, the first switch module includes a first relay;

[0022] The first end of the coil of the first relay is connected to the neutral line, and the second end of the coil of the first relay is connected to the control line; the first contact of the switch in the first relay is connected to the live wire of the AC power supply, and the second contact of the switch in the first relay is connected to the first controlled device.

[0023] In a possible implementation, the first switch module further includes a fifth diode, a sixth diode and a first filtering unit;

[0024] The first end of the fifth diode and the first end of the first filter unit are respectively connected to the neutral line of the AC power supply, the second end of the fifth diode is respectively connected to the second end of the first filter unit, the second end of the coil of the first relay, and the first end of the sixth diode; the second end of the sixth diode is connected to the control line.

[0025] In a possible implementation, the second switch module includes a second relay;

[0026] The first end of the coil of the second relay is connected to the control line, and the second end of the coil of the second relay is grounded; the first contact of the switch in the second relay is connected to the live wire of the AC power supply, and the second contact of the switch in the second relay is connected to the second controlled device.

[0027] In a possible implementation, the second switch module further includes a seventh diode, an eighth diode and a second filtering unit;

[0028] The first end of the seventh diode is connected to the control line, and the second end of the seventh diode is respectively connected to the first end of the second filter unit, the first end of the coil of the second relay, and the first end of the eighth diode; the second end of the eighth diode and the second end of the second filter unit are both grounded.

[0029] The embodiment of the present application provides a line control circuit, including: a main control unit, a first control port, a second control port, a first switch module, a second switch module, a first controlled device and a second controlled device; the main control unit is used to send a first control signal to the first control port, and / or send a second control signal to the second control port; the first control port is used to obtain an AC power signal, if the first control signal is detected and the AC power signal meets a first preset condition, the first switch module is turned on through the control line; the second control port is used to obtain the AC power signal, if the second control signal is detected and the AC power signal meets a second preset condition, the second switch module is turned on through the control line; the first preset condition and the second preset condition are mutually exclusive; the first controlled device is turned on when the first switch module is turned on; the second controlled device is turned on when the second switch module is turned on. Through the above structure, the present embodiment can realize the control of the first controlled device and the second controlled device through one control line, thereby solving the problem that the reserved wires are small and cannot meet the control of multiple electrical devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0031] Figure 1 is a schematic diagram of the structure of a wire control circuit provided in an embodiment of the present application;

[0032] Figure 2 It is a specific circuit diagram of the wire control circuit provided in the embodiment of the present application.

[0033] The above-mentioned reference numerals are as follows:

[0034] D6, the first diode; D5, the second diode; D7, the third diode; D8, the fourth diode; D1, the fifth diode; D3, the sixth diode; D4, the seventh diode; D2, the eighth diode; R4, the first resistor; R3, the second resistor; R5, the third resistor; R6, the fourth resistor; R1, the fifth resistor; R2, the sixth resistor; Q1, the first switch tube; Q2, the second switch tube; CD1, the first capacitor; CD2, the second capacitor; K1, the first relay; K2, the second relay; L, the live wire; N, the neutral wire. DETAILED DESCRIPTION

[0035] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0036] In order to make the purpose, technical solutions and advantages of the present application clearer, specific embodiments will be described below in conjunction with the accompanying drawings.

[0037] Figure 1 This is a schematic diagram of the structure of the wire control circuit provided in the embodiment of the present application. Figure 1 As shown, the line control circuit includes: a main control unit, a first control port, a second control port, a first switch module, a second switch module, a first controlled device and a second controlled device;

[0038] The main control unit is connected to the first control port and the second control port respectively, and the first control port and the second control port are connected to the first switch module and the second switch module respectively through a control line; the first switch module is connected to the first controlled device; and the second switch module is connected to the second controlled device;

[0039] The main control unit is used to send a first control signal to the first control port, and / or send a second control signal to the second control port;

[0040] The first control port is used to obtain an AC power signal, and if the first control signal is detected and the AC power signal meets a first preset condition, the first switch module is turned on through the control line;

[0041] The second control port is used to obtain an AC power signal. If the second control signal is detected and the AC power signal meets a second preset condition, the second switch module is turned on through the control line; the first preset condition and the second preset condition are mutually exclusive;

[0042] The first controlled device is turned on when the first switch module is turned on; the second controlled device is turned on when the second switch module is turned on.

[0043] In this embodiment, the first controlled device and the second controlled device may be electrical devices such as lamps, air conditioners, and audio equipment. The main control unit may be a control panel, a remote control, or other equipment. A switch button of the first controlled device and a switch button of the second controlled device are set on the main control unit to control the switch states of the first controlled device and the second controlled device respectively; the button may be a physical button or a virtual button. When the switch button of the first controlled device is triggered, the main control unit generates a first control signal; when the switch button of the second controlled device is triggered, the main control unit generates a second control signal.

[0044] Specifically, the first control port and the second control port are both connected to the main control unit, and both are provided with AC power signals by the AC power supply. Specifically, the present application adopts the characteristic that the AC power signal has mutually exclusive signal segments, so that the first control port and the second control port alternately use a single control line, correspondingly controlling the first switch module and the second switch module to be turned on, thereby controlling the corresponding controlled device to be turned on, so as to be compatible with more wire control application environments.

[0045] It can be seen from the above embodiments that the wire control circuit provided in this embodiment controls the first controlled device and the second controlled device through one control wire, thereby solving the problem that too few wires are reserved to meet the control of multiple electrical devices.

[0046] In a possible implementation manner, both the first control signal and the second control signal are high level signals;

[0047] The first control port includes a first switch tube circuit; a first input end of the first switch tube circuit is connected to the main control unit, and a second input end of the first switch tube circuit is connected to a neutral line of an AC power source; the neutral line is grounded;

[0048] The second control port includes a second switch tube circuit, wherein a first input end of the second switch tube circuit is connected to the main control unit, and a second input end of the second switch tube circuit is grounded;

[0049] The first switch tube circuit is turned on when the high level signal and the first zero line signal are connected; the second switch tube circuit is turned on when the high level signal and the second zero line signal are connected;

[0050] When the first zero line signal is a positive zero line signal, the second zero line signal is a negative zero line signal; when the first zero line signal is a negative zero line signal, the second zero line signal is a positive zero line signal.

[0051] In one possible implementation, Figure 2 As shown, the first switch tube circuit includes a first switch tube Q1, a first resistor R4, a second resistor R3, a first diode D6 and a second diode D5;

[0052] The first end of the first diode D6 is the first input end of the first switch tube circuit, the second end of the first diode D6 is respectively connected to the first end of the first switch tube Q1 and the first end of the first resistor R4, the second end of the first switch tube Q1 is respectively connected to the second end of the first resistor R4 and the first end of the second resistor R3, and the second end of the second resistor R3 is the second input end of the first switch tube circuit; the third end of the first switch tube Q1 is connected to the first end of the second diode D5, and the second end of the second diode D5 is connected to the control line.

[0053] In a possible implementation manner, the first switch tube Q1 is an NMOS tube.

[0054] Specifically, when the first switch tube Q1 is an NMOS tube, the cathode of the first diode D6 is the first input end of the first switch tube circuit, the anode of the first diode D6 is respectively connected to the drain D of the first switch tube Q1 and the first end of the first resistor R4, the gate S of the first switch tube Q1 is respectively connected to the second end of the first resistor R4 and the first end of the second resistor R3, and the second end of the second resistor R3 is the second input end of the first switch tube circuit; the source S of the first switch tube is connected to the cathode of the second diode D5, and the anode of the second diode D5 is connected to the control line.

[0055] In a possible implementation, the first switch tube Q1 may also be a PMOS tube.

[0056] In one possible implementation, Figure 2 As shown, the second switch tube circuit includes a second switch tube Q2, a third resistor R5, a fourth resistor R6, a third diode D7 and a fourth diode D8;

[0057] The first end of the third diode D7 is the first input end of the second switch tube circuit, the second end of the third diode D7 is respectively connected to the third end of the second switch tube Q2 and the first end of the third resistor R5, the second end of the second switch tube Q2 is respectively connected to the second end of the third resistor R5 and the first end of the fourth resistor R6, the second end of the fourth resistor R6 is the second input end of the second switch tube circuit; the first end of the second switch tube Q2 is connected to the first end of the fourth diode D8, and the second end of the fourth diode D8 is connected to the control line.

[0058] In a possible implementation, the second switch tube Q2 is a PMOS tube.

[0059] Specifically, when the second switch tube Q2 is a PMOS tube, the anode of the third diode D7 is the first input end of the second switch tube circuit, the cathode of the third diode D7 is respectively connected to the source of the second switch tube Q2 and the first end of the third resistor R5, the gate of the second switch tube Q2 is respectively connected to the second end of the third resistor R5 and the first end of the fourth resistor R6, and the second end of the fourth resistor R6 is the second input end of the second switch tube circuit; the drain of the second switch tube Q2 is connected to the first end of the fourth diode D8, and the second end of the fourth diode D8 is connected to the control line.

[0060] In this embodiment, when the first switch tube Q1 is an NMOS tube, the second switch tube Q2 is a PMOS tube; when the first switch tube Q1 is a PMOS tube, the second switch tube Q2 is an NMOS tube.

[0061] In a possible implementation, the first switch module includes a first relay K1;

[0062] The first end of the coil of the first relay K1 is connected to the neutral line, and the second end of the coil of the first relay K1 is connected to the control line; the first contact of the switch in the first relay K1 is connected to the live wire of the AC power supply, and the second contact of the switch in the first relay K1 is connected to the first controlled device.

[0063] Specifically, when the coil of the first relay K1 is energized, the switch in the first relay K1 is closed, so that the live wire supplies power to the first controlled device.

[0064] In a possible implementation, the first switch module further includes a fifth diode D1, a sixth diode D3 and a first filtering unit;

[0065] The first end of the fifth diode D1 and the first end of the first filter unit are respectively connected to the neutral line of the AC power supply, the second end of the fifth diode D1 is respectively connected to the second end of the first filter unit, the second end of the coil of the first relay K1, and the first end of the sixth diode D3; the second end of the sixth diode D3 is connected to the control line.

[0066] In this embodiment, the first filtering unit includes a first capacitor CD1 and a fifth resistor R1; and the first capacitor CD1 and the fifth resistor R1 are connected in series.

[0067] In one possible implementation, Figure 2 As shown, the second switch module includes a second relay K2;

[0068] The first end of the coil of the second relay K2 is connected to the control line, and the second end of the coil of the second relay K2 is grounded; the first contact of the switch in the second relay K2 is connected to the live wire of the AC power supply, and the second contact of the switch in the second relay K2 is connected to the second controlled device.

[0069] Specifically, when the coil of the second relay K2 is energized, the switch in the second relay K2 is closed, so that the live wire supplies power to the second controlled device.

[0070] In a possible implementation, the second switch module further includes a seventh diode D4, an eighth diode D2, and a second filtering unit;

[0071] The first end of the seventh diode D4 is connected to the control line, and the second end of the seventh diode D4 is respectively connected to the first end of the second filter unit, the first end of the coil of the second relay K2, and the first end of the eighth diode D2; the second end of the eighth diode D2 and the second end of the second filter unit are both grounded.

[0072] In this embodiment, the second filtering unit includes a second capacitor CD2 and a sixth resistor R2; and the second capacitor CD2 and the sixth resistor R2 are connected in series.

[0073] In this embodiment, when the first controlled device 1 needs to be turned on separately, the first control port 1 is pulled high to power on, and when the sine wave of the N line is the positive half axis at this time, the first switch tube Q1 is an N-channel MOS, and the conduction condition is met at this time. The current flows through the common terminal ground-N to charge the capacitor CD1, and flows through the relay K1 coil 2-1 in sequence to the sixth diode D3, the second diode D5, the first switch tube Q1 and the first diode D6 to form a loop, so that the relay K1 coil voltage is generated, the switch contacts 3 and 4 of K1 are attracted and turned on, so that the live wire-L supplies power to the first controlled device 1 and starts to work. Because the second control port 2 is low level and not powered on at this time, no matter what state the N line is in, the second switch tube Q2 is not turned on, and the second relay K2 does not work.

[0074] Similarly, when it is necessary to turn on the second controlled device 2 separately, a high-level second control signal is sent to the second control port 2, the second control port 2 is pulled up to power on, and when the sine wave of the N line is the negative half axis at this time, the second switch tube Q2 is a P-channel MOS, and the conduction condition is met at this time. The current flows through the second control port through the third diode D7, the second switch tube Q2, the fourth diode D8, and the seventh diode D4 to charge CD2, and flows through the second relay K2 coil 2-1, so that the second relay K2 coil voltage is generated, and the 3rd and 4th pins of the second relay K2 are attracted and turned on, so that the live wire -L supplies power to the second controlled device 2 and starts to run.

[0075] When two controlled devices need to be turned on at the same time, the first control signal can be sent to the first control port 1 and the second control signal can be sent to the second control port 2 at the same time. At this time, the upper and lower axes of the sine wave work alternately, and each controls the corresponding first controlled device 1 and second controlled device 2 separately.

[0076] From the above embodiments, it can be seen that this embodiment provides a circuit solution for controlling two controlled devices with a single line. When the original wall is lacking or the number is insufficient to control the number of devices, it can be designed as a circuit solution. The traditional control structure is that one control line controls one device loop. The line control circuit provided in this embodiment can effectively utilize the current defective environment and effectively increase the number of controllable devices.

[0077] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A wire control circuit, characterized in that: include: A main control unit, a first control port, a second control port, a first switch module, a second switch module, a first controlled device, and a second controlled device; The main control unit is connected to the first control port and the second control port respectively, and the first control port and the second control port are connected to the first switch module and the second switch module respectively through a control line; the first switch module is connected to the first controlled device; and the second switch module is connected to the second controlled device; The main control unit is used to send a first control signal to the first control port, and / or send a second control signal to the second control port; The first control port is used to obtain an AC power signal, and if the first control signal is detected and the AC power signal meets a first preset condition, the first switch module is turned on through the control line; The second control port is used to obtain the AC power signal. If the second control signal is detected and the AC power signal meets a second preset condition, the second switch module is turned on through the control line; the first preset condition and the second preset condition are mutually exclusive; The first controlled device is turned on when the first switch module is turned on; The second controlled device is turned on when the second switch module is turned on.

2. The wire control circuit according to claim 1, characterized in that: The first control signal and the second control signal are both high level signals; The first control port includes a first switch tube circuit; a first input end of the first switch tube circuit is connected to the main control unit, and a second input end of the first switch tube circuit is connected to a neutral line of an AC power source; the neutral line is grounded; The second control port includes a second switch tube circuit, wherein a first input end of the second switch tube circuit is connected to the main control unit, and a second input end of the second switch tube circuit is grounded; The first switch tube circuit is turned on when the high level signal and the first zero line signal are connected; the second switch tube circuit is turned on when the high level signal and the second zero line signal are connected; When the first zero line signal is a positive zero line signal, the second zero line signal is a negative zero line signal; when the first zero line signal is a negative zero line signal, the second zero line signal is a positive zero line signal.

3. The wire control circuit according to claim 1, characterized in that: The first switch tube circuit includes a first switch tube, a first resistor, a second resistor, a first diode and a second diode; The first end of the first diode is the first input end of the first switch tube circuit, the second end of the first diode is respectively connected to the first end of the first switch tube and the first end of the first resistor, the second end of the first switch tube is respectively connected to the second end of the first resistor and the first end of the second resistor, and the second end of the second resistor is the second input end of the first switch tube circuit; the third end of the first switch tube is connected to the first end of the second diode, and the second end of the second diode is connected to the control line.

4. The wire control circuit according to claim 3, characterized in that: The first switch tube is an NMOS tube.

5. The wire control circuit according to claim 1, characterized in that: The second switch tube circuit includes a second switch tube, a third resistor, a fourth resistor, a third diode and a fourth diode; The first end of the third diode is the first input end of the second switch tube circuit, the second end of the third diode is respectively connected to the third end of the second switch tube and the first end of the third resistor, the second end of the second switch tube is respectively connected to the second end of the third resistor and the first end of the fourth resistor, the second end of the fourth resistor is the second input end of the second switch tube circuit; the first end of the second switch tube is connected to the first end of the fourth diode, and the second end of the fourth diode is connected to the control line.

6. The wire control circuit according to claim 5, characterized in that: The second switch tube is a PMOS tube.

7. The wire control circuit according to claim 1, characterized in that: The first switch module includes a first relay; The first end of the coil of the first relay is connected to the neutral line of the AC power supply, and the second end of the coil of the first relay is connected to the control line; the first contact of the switch in the first relay is connected to the live wire of the AC power supply, and the second contact of the switch in the first relay is connected to the first controlled device.

8. The wire control circuit according to claim 7, characterized in that: The first switch module further includes a fifth diode, a sixth diode and a first filtering unit; The first end of the fifth diode and the first end of the first filter unit are respectively connected to the neutral line of the AC power supply, the second end of the fifth diode is respectively connected to the second end of the first filter unit, the second end of the coil of the first relay, and the first end of the sixth diode; the second end of the sixth diode is connected to the control line.

9. The control-by-wire circuit according to claim 1, characterized in that: The second switch module includes a second relay; The first end of the coil of the second relay is connected to the control line, and the second end of the coil of the second relay is grounded; the first contact of the switch in the second relay is connected to the live wire of the AC power supply, and the second contact of the switch in the second relay is connected to the second controlled device.

10. The wire control circuit according to claim 9, characterized in that: The second switch module further includes a seventh diode, an eighth diode and a second filtering unit; The first end of the seventh diode is connected to the control line, and the second end of the seventh diode is respectively connected to the first end of the second filter unit, the first end of the coil of the second relay, and the first end of the eighth diode; the second end of the eighth diode and the second end of the second filter unit are both grounded.

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