A control circuit and a switch module using the same

Abstract

The present invention discloses a control circuit and a switch module using the same, including an operation control module, a signal trigger module and a comparison module. The operation control module can generate a first trigger signal through logical operation, and the signal trigger module can be driven to generate a second trigger signal. The comparison module includes a first input end, a second input end and an output end. The first input end of the comparison module is connected to the operation control module, and the second input end of the comparison module is connected to the signal trigger module. When the comparison module receives the first trigger signal or the second trigger signal, the comparison module can invert the signal output from the output end of the comparison module. This design can control the on and off of the switch through multi-way control, which are mutually related but not mutually restricted, thereby improving the control flexibility and safety.

Description

Technical Field

[0001] The present invention relates to the field of electronic circuits, and in particular to a control circuit and a switch module using the same. Background Art

[0002] Currently, with the development of Internet of Things technology, the application of remote control is becoming more and more widespread. Remote control switch technology has also been developed, and it must also be compatible with local control. Generally speaking, existing products all use an operation control module (such as MCU, CPU, etc.), which can be connected to a wireless transmission module and a key touch module. Whether it is remote control or local control, the remote trigger signal or local trigger signal generated must be judged by the software of the operation control module, and then the corresponding control instruction is output to control the operation of the subsequent circuit module (switch module).

[0003] It can be seen that the current control is completely based on the operation control module. Once the operation control module is interfered with and fails, the operation control module cannot complete the software operation judgment, resulting in the subsequent circuit being completely out of control. Even if the local button touch module is driven to generate a corresponding trigger signal, it cannot be controlled, which may cause safety problems. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a control circuit with multi-channel control capable of manipulating output signals, thereby improving control flexibility and safety.

[0005] The present invention also proposes a switch module that can control the on and off of a switch through multi-way control. The modules are interrelated but do not restrict each other, thereby improving the control flexibility and safety.

[0006] According to an embodiment of the first aspect of the present invention, a control circuit includes: an operation control module, which can generate a first trigger signal through a logical operation; a signal trigger module, which can be driven to generate a second trigger signal; a comparison module, including a first input terminal, a second input terminal and an output terminal, the first input terminal of the comparison module is connected to the operation control module, the second input terminal of the comparison module is connected to the signal trigger module, and the comparison module can invert the signal output from the output terminal of the comparison module when receiving the first trigger signal or the second trigger signal.

[0007] A control circuit according to an embodiment of the present invention has at least the following beneficial effects:

[0008] In the control circuit of the present invention, the operation control module can generate a first trigger signal according to a logical operation. The first trigger signal is input to the comparison module, which can invert the signal output from the output end of the comparison module, thereby controlling the operation of the rear circuit. Similarly, the signal trigger module can generate a second trigger signal when driven. The second trigger signal is input to the comparison module, which can also invert the signal output from the output end of the comparison module, thereby controlling the operation of the rear circuit. There is no restriction between the operation control module and the signal trigger module. The multi-channel control of this design can control the output signal, thereby improving the control flexibility and safety.

[0009] According to some embodiments of the present invention, the comparison module is an XOR gate unit or an XNOR gate unit.

[0010] According to some embodiments of the present invention, a wireless transmission module is further included, and the operation control module is connected to the wireless transmission module so as to generate a first trigger signal based on the received wireless signal. The operation control module is connected to the output end of the comparison module to obtain the state of the signal output by the output end of the comparison module, and the wireless transmission module can send the state of the signal output by the output end of the comparison module to the outside world.

[0011] According to some embodiments of the present invention, the first trigger signal and the second trigger signal are rising edge signals or falling edge signals.

[0012] According to some embodiments of the present invention, the operation control module includes an operation processing unit and a first register, the first register includes an input end and an output end, the operation processing unit is connected to the input end of the first register and the operation processing unit outputs a first pulse signal, the output end of the first register is connected to the first input end of the comparison module, and the first register can invert the first level signal output from the output end of the first register to form a rising edge signal or a falling edge signal when receiving the first pulse signal.

[0013] According to some embodiments of the present invention, the operation processing unit includes an operation processing chip and a crystal oscillator component, the crystal oscillator component is connected to the operation processing chip to provide a clock signal for the operation processing chip, and the operation processing chip forms the first pulse signal according to the clock signal.

[0014] According to some embodiments of the present invention, the signal trigger module includes a key trigger unit and a second register, the second register includes an input end and an output end, the key trigger unit is connected to the input end of the second register and the key trigger unit can generate and output a first pulse signal when driven, and the second register can invert the second level signal output from the output end of the second register to form a rising edge signal or a falling edge signal when receiving the second pulse signal.

[0015] According to an embodiment of the second aspect of the present invention, the switch module includes a switch driving module and a control circuit disclosed in any of the above embodiments, and the output end of the comparison module is connected to the switch driving module to control the operation of the switch driving module through the signal output from the output end of the comparison module.

[0016] The switch module according to the embodiment of the present invention has at least the following beneficial effects:

[0017] In the switch module of the present invention, the operation control module can generate a first trigger signal according to a logical operation. The first trigger signal is input into the comparison module, which can invert the signal output from the output end of the comparison module, thereby controlling the opening and closing of the switch driving module. Similarly, the signal trigger module can generate a second trigger signal when driven. The second trigger signal is input into the comparison module, which can also invert the signal output from the output end of the comparison module, and can also control the opening and closing of the switch driving module. This design can control the opening and closing of the switch through multi-way control, which are interrelated but not mutually restricted, thereby improving the control flexibility and safety.

[0018] According to some embodiments of the present invention, the switch driving module includes a switch driving unit and a relay unit, the relay unit includes a relay coil and a contact assembly that can be attracted by the relay coil, one end of the contact assembly can be connected to an external power supply, and the other end of the contact assembly can be connected to an external load, one end of the relay coil can be connected to an external power supply, and the other end of the relay coil is connected to the input end of the switch driving unit, the output end of the switch driving unit is grounded, and the output end of the comparison module is connected to the control end of the switch driving unit to control the on / off between the input end and the output end of the switch driving unit.

[0019] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0021] Figure 1 This is a schematic diagram of the principle structure of one embodiment of the switch module of the present invention;

[0022] Figure 2 A circuit diagram of an operation control module of one embodiment of a switch module of the present invention;

[0023] Figure 3A circuit diagram of a signal trigger module of one embodiment of a switch module of the present invention;

[0024] Figure 4 This is a circuit diagram of a comparison module and a switch driving module according to one embodiment of the switch module of the present invention.

[0025] Reference numerals:

[0026] Operation control module 100, operation processing unit 110, operation processing chip 111, crystal oscillator component 112, first register 120, signal trigger module 200, key trigger unit 210, second register 220, comparison module 300, wireless transmission module 400, switch drive module 500, switch drive unit 510, relay unit 520. DETAILED DESCRIPTION

[0027] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0028] In the description of the present invention, it should be understood that descriptions involving orientations, such as the orientations or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside", are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0030] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0031] like Figure 1-4 As shown, a control circuit according to an embodiment of the present invention includes an operation control module 100, a signal trigger module 200 and a comparison module 300. The operation control module 100 can generate a first trigger signal through logical operation; the signal trigger module 200 can be driven to generate a second trigger signal; the comparison module 300 includes a first input terminal, a second input terminal and an output terminal. The first input terminal of the comparison module 300 is connected to the operation control module 100, and the second input terminal of the comparison module 300 is connected to the signal trigger module 200. When receiving the first trigger signal or the second trigger signal, the comparison module 300 can invert the signal output from the output terminal of the comparison module 300.

[0032] It should be noted that if Figure 2 As shown, the operation control module 100 here can be an integrated circuit or chip with logical operation functions, such as MCU, CPU or other chips, which can record programming. Certain instructions are input into the input serial port of the operation control module 100. After the logical operation of the programming program in the operation control module 100, the output instruction is obtained and output through the output serial port, thereby generating a first trigger signal.

[0033] Here, the signal trigger module 200 is as follows: Figure 3 As shown, it can be a button trigger unit 210, and an external power supply supplies power to the button trigger unit 210. When the user presses the button trigger unit 210, a second trigger signal can be generated; the signal trigger module 200 can also be an element that generates a second trigger signal under the influence of the external environment. For example, the signal trigger module 200 is a temperature-sensitive element, and an external power supply supplies power to the signal trigger module 200. When the temperature changes, a second trigger signal can also be generated due to a change in resistance.

[0034] In some embodiments of the present invention, the first trigger signal and the second trigger signal are rising edge signals or falling edge signals, or the first trigger signal and the second trigger signal are pulse signals.

[0035] In some embodiments of the present invention, the first trigger signal and the second trigger signal are rising edge signals or falling edge signals, and the comparison module 300 is an XOR gate unit or an XNOR gate unit. Specifically, the comparison module 300 can be selected from conventional XOR gate integrated components or XNOR gate integrated components, such as Figure 4As shown, the comparison module 300 is an XOR gate unit. When the signal received by the first input terminal (A) of the comparison module 300 is low level and the signal received by the second input terminal (B) is low level, the output terminal (Y) outputs a low level. When the first trigger signal (rising edge) is input to the first input terminal of the comparison module 300, so that the received signal changes from low level to high level, the output terminal (Y) outputs a high level, as shown in Table 1. Thereafter, when the first trigger signal (rising edge) is input to the first input terminal of the comparison module 300 or when the second trigger signal (rising edge) is input to the second input terminal of the comparison module 300, the above situation is similar.

[0036] First input terminal (A) Second input terminal (B) Output terminal (Y) 0 0 0 0 1 1 1 0 1 1 1 0

[0037] Table 1

[0038] The comparison module 300 is an XOR gate unit, as shown in Table 2. The specific situation is similar to that of the XOR gate unit and will not be described in detail here.

[0039] First input terminal (A) Second input terminal (B) Output terminal (Y) 0 0 1 0 1 0 1 0 0 1 1 1

[0040] Table 2

[0041] In the control circuit of the present invention, the operation control module 100 can generate a first trigger signal based on a logical operation. The first trigger signal is input to the comparison module 300, which can invert the signal output from the output end of the comparison module 300, thereby controlling the operation of the rear circuit. Similarly, the signal trigger module 200 can generate a second trigger signal when driven. The second trigger signal is input to the comparison module 300, which can also invert the signal output from the output end of the comparison module 300, and can also control the operation of the rear circuit. There is no restriction between the operation control module 100 and the signal trigger module 200. The multi-channel control of this design can control the output signal, thereby improving the control flexibility and safety.

[0042] In some embodiments of the present invention, a wireless transmission module 400 is further included. The operation control module 100 is connected to the wireless transmission module 400 so as to generate a first trigger signal based on the received wireless signal. The operation control module 100 is connected to the output end of the comparison module 300 to obtain the status of the signal output from the output end of the comparison module 300. The wireless transmission module 400 can send the status of the signal output from the output end of the comparison module 300 to the outside world.

[0043] Specifically, if Figure 2As shown, the wireless transmission module 400 can be one or more of WiFi, Bluetooth, and ZigBee. In this design, the operation control module 100 integrates the ZigBee protocol and can obtain external wireless control instructions in conjunction with the antenna. The operation control module 100 can then generate a first trigger signal. Similarly, the operation control module 100 can obtain the status of the signal output by the output terminal of the comparison module 300, so that the operation control module 100 can know the status of the signal output by the output terminal of the comparison module 300 at that time. The status can also be sent to the user wirelessly to further control the operation of the subsequent circuit. For example, when the output terminal of the comparison module 300 outputs a low level, the subsequent switch driving module 500 is turned off. When the output terminal of the comparison module 300 outputs a high level, the subsequent switch driving module 500 is closed. The user can know the output status of the output terminal of the comparison module 300 at that time and determine whether to output a control instruction to the operation control module 100. The operation control module 100 can then generate a first trigger signal to switch the output status of the output terminal of the comparison module 300.

[0044] In some embodiments of the present invention, the operation control module 100 includes an operation processing unit 110 and a first register 120, the first register 120 includes an input end and an output end, the operation processing unit 110 is connected to the input end of the first register 120 and the operation processing unit 110 outputs a first pulse signal, the output end of the first register 120 is connected to the first input end of the comparison module, and when receiving the first pulse signal, the first register 120 can invert the first level signal output from the output end of the first register 120 to form a rising edge signal or a falling edge signal.

[0045] In some embodiments of the present invention, the operation control module 100 may also be composed of only an operation processing unit 110 which may be an MCU, a CPU or other chips, and the operation processing unit 110 may generate the first trigger signal.

[0046] For an embodiment in which the operation control module 100 includes an operation processing unit 110 and a first register 120, as shown in FIG. Figure 2 As shown, specifically, the first register 120 can be a D flip-flop U2B, the operation processing unit 110 is a processing chip integrated with ZigBee, such as JN5169, the input end (CLK pin) of the first register 120 is connected to the DIO16 pin of the operation processing unit 110, the CLR pin and the PR pin of the first register 120 are grounded, and the register end (D pin) of the first register 120 is connected to the output flip end ( When the input level of the first register 120 changes from low to high, the rising edge triggers the output of the first register 120 (Q pin) to invert, and the output of the first register 120 is output to the first input of the comparison module 300.

[0047] At the same time, a program can be written into the processing unit 110 to generate a 10ms low-level pulse at the reset pin (RESETN) of the processing unit 110 when the reset resistor R15 and the capacitor C9 are powered on. The processing unit 110 is reset and operates, forming a first pulse signal.

[0048] The processing unit 110 can also read the status of the output end of the comparison module 300 by reading the input port DIO8 and report it wirelessly to the cloud.

[0049] The processing unit 110 can also receive wireless control commands via wireless ZigBee signals. When receiving a control command (e.g., a power-on / off command), the processing unit 110 first reads the signal at pin DIO8. If pin DIO8 is high, it indicates that the output has been closed and powered on, so the output end (pin DIO16) of the processing unit 110 does not need to be changed. If pin DIO8 is low, the processing unit 110 program determines to send a 5ms low-level pulse via pin DIO16 to the CLK pin of the first register 120 connected thereto, triggering the output signal of the first register 120 to be inverted.

[0050] In some embodiments of the present invention, Figure 2 As shown, the operation processing unit 110 includes an operation processing chip 111 and a crystal oscillator component 112. The crystal oscillator component 112 is connected to the operation processing chip 111 to provide a clock signal to the operation processing chip 111. The operation processing chip 111 generates a first pulse signal according to the clock signal.

[0051] According to some embodiments of the present invention, the signal trigger module 200 includes a key trigger unit 210 and a second register 220, the second register 220 includes an input end and an output end, the key trigger unit 210 is connected to the input end of the second register 220 and the key trigger unit 210 can generate and output a first pulse signal when driven, and the second register 220 can invert the second level signal output from the output end of the second register 220 when receiving the second pulse signal to form a rising edge signal or a falling edge signal.

[0052] Specifically, the key trigger unit 210 can use a key with two states of closed and open to form high and low level signals; or the key trigger unit 210 can use a self-recovering normally open key, such as Figure 3As shown, the button S1 is a normally open button, the second register 220 is a D flip-flop U2B, one end of the button S1 is grounded, the other end of the button S1 is connected to the input end (CLK pin) of the D flip-flop U2B and one end of the resistor R14, an external power supply is connected to the other end of the resistor R14, the output end Q pin of the D flip-flop U2B is connected to the second input end of the comparison module 300, and the inverting output end ( The second level signal output by the D flip-flop U2B is inverted to form a rising edge signal or a falling edge signal.

[0053] According to the switch module of the second embodiment of the present invention, Figure 1-Figure 4 As shown, it includes a switch driving module 500 and a control circuit disclosed in any of the above embodiments. The output end of the comparison module 300 is connected to the switch driving module 500 to control the operation of the switch driving module 500 through the signal output from the output end of the comparison module 300.

[0054] In the switch module of the present invention, the operation control module 100 can generate a first trigger signal based on a logical operation. The first trigger signal is input to the comparison module 300, which can invert the signal output from the output end of the comparison module 300, thereby controlling the opening and closing of the switch driving module 500. Similarly, the signal trigger module 200 can generate a second trigger signal when driven. The second trigger signal is input to the comparison module 300, which can also invert the signal output from the output end of the comparison module 300, and can also control the opening and closing of the switch driving module 500. This design can control the opening and closing of the switch through multi-way control, which are interrelated but not mutually restricted, thereby improving the control flexibility and safety.

[0055] Specifically, if Figure 4 As shown, the switch driving module 500 includes a switch driving unit 510 and a relay unit 520. The relay unit 520 includes a relay coil and a contact assembly that can be attracted by the relay coil. One end of the contact assembly can be connected to an external power supply, and the other end of the contact assembly can be connected to an external load. One end of the relay coil can be connected to the external power supply, and the other end of the relay coil is connected to the input end of the switch driving unit 510. The output end of the switch driving unit 510 is grounded. The output end of the comparison module 300 is connected to the control end of the switch driving unit 510 to control the on-off between the input end and the output end of the switch driving unit 510. The switch driving unit 510 can be composed of a switch tube, for example, a transistor Q1 or a MOS tube. The output signal of the output end of the comparison module 300 can control the operation of the relay unit 520 through the switch driving unit 510, thereby realizing switching.

[0056] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0057] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A control circuit, characterized in that: include: An operation control module, comprising an integrated circuit or chip with a logic operation function, wherein the operation control module is capable of generating a first trigger signal through a logic operation; A signal trigger module capable of being driven to generate a second trigger signal; a comparison module, comprising a first input terminal, a second input terminal, and an output terminal, wherein the first input terminal of the comparison module is connected to the operation control module, the second input terminal of the comparison module is connected to the signal trigger module, and the comparison module is capable of inverting the signal output by the output terminal of the comparison module upon receiving the first trigger signal or the second trigger signal; The comparison module is an XOR gate unit or an XNOR gate unit; A wireless transmission module, wherein the operation control module is connected to the wireless transmission module so as to generate a first trigger signal according to the received wireless signal, the operation control module is connected to the output end of the comparison module to obtain the state of the signal output by the output end of the comparison module, and the wireless transmission module can send the state of the signal output by the output end of the comparison module to the outside world.

2. A control circuit according to claim 1, characterized in that: The first trigger signal and the second trigger signal are rising edge signals or falling edge signals.

3. A control circuit according to claim 2, characterized in that: The operation control module includes an operation processing unit and a first register, the first register includes an input end and an output end, the operation processing unit is connected to the input end of the first register and the operation processing unit outputs a first pulse signal, the output end of the first register is connected to the first input end of the comparison module, and the first register can invert the first level signal output from the output end of the first register to form a rising edge signal or a falling edge signal when receiving the first pulse signal.

4. A control circuit according to claim 3, characterized in that: The operation processing unit includes an operation processing chip and a crystal oscillator component. The crystal oscillator component is connected to the operation processing chip to provide a clock signal for the operation processing chip. The operation processing chip generates the first pulse signal according to the clock signal.

5. A control circuit according to claim 2, characterized in that: The signal trigger module includes a key trigger unit and a second register, the second register includes an input end and an output end, the key trigger unit is connected to the input end of the second register and the key trigger unit can generate and output a first pulse signal when driven, and the second register can invert the second level signal output from the output end of the second register to form a rising edge signal or a falling edge signal when receiving a second pulse signal.

6. A switch module, characterized in that: It comprises a switch driving module and the control circuit according to any one of claims 1 to 5, wherein the output end of the comparison module is connected to the switch driving module so as to control the operation of the switch driving module through the signal outputted from the output end of the comparison module.

7. The switch module according to claim 6, characterized in that: The switch driving module includes a switch driving unit and a relay unit. The relay unit includes a relay coil and a contact assembly that can be attracted by the relay coil. One end of the contact assembly can be connected to an external power supply, and the other end of the contact assembly can be connected to an external load. One end of the relay coil can be connected to an external power supply, and the other end of the relay coil is connected to the input end of the switch driving unit. The output end of the switch driving unit is grounded. The output end of the comparison module is connected to the control end of the switch driving unit to control the on-off between the input end and the output end of the switch driving unit.

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