Switch control box circuit

Abstract

The utility model relates to the technical field of switch electric control, and discloses a switch control box circuit capable of adapting to various types of switches, which comprises a DC-DC step-down circuit (110) for outputting 3.3 V voltage signals, a first identification circuit (120), a second identification circuit (130), a master control circuit (140), a driving circuit (150) and an LED lamp strip (160). When the first trigger signal or the second trigger signal is at a low level, the drive circuit (150) is controlled to trigger and output a high-level drive signal, and the LED lamp strip (160) is controlled to be turned on, and when the first trigger signal or the second trigger signal is at a low level, the drive circuit (150) is controlled to trigger and output a low-level drive signal, and the LED lamp strip (160) is controlled to be turned off.

Description

Technical Field

[0001] This utility model relates to the field of switch control technology, and more specifically, to a switch control box circuit. Background Technology

[0002] Currently, in home lighting control applications, such as door switches, hand-swipe switches, and human body sensor switches, different control methods require customized adapter boxes that match the switch type. The variety of opening sizes and types makes installation cumbersome and maintenance or replacement very inconvenient.

[0003] On the other hand, different control methods require the selection of corresponding adapter boxes, and the opening sizes are also different. Different sizes of drill bits need to be used to open the holes for installation, which results in low installation efficiency. If the installer makes the wrong hole or selects the wrong type of switch, it may damage the home products. Summary of the Invention

[0004] The technical problem this utility model aims to solve is that, in the existing technology, different control methods require the selection of corresponding adapter boxes, and the opening sizes are also inconsistent. Different sizes of drill bits are needed to open the holes for installation, which results in low installation efficiency. If the installer makes a mistake in opening the hole or selects the wrong type of switch, it may damage the home products. This utility model provides a switch control box circuit that can adapt to multiple types of switches.

[0005] The technical solution adopted by this utility model to solve its technical problem is: to construct a switch control box circuit, which includes:

[0006] The DC-DC step-down circuit is configured at the front end of the switch control box circuit to receive the power signal input from the previous stage circuit, and to perform step-down, filtering and voltage regulation on the input power signal to output a 3.3V voltage signal.

[0007] The first identification circuit has its voltage signal input terminal connected to the output terminal of the DC-DC step-down circuit, and is used to receive the 3.3V voltage signal.

[0008] Its other signal input terminal is used to receive the first control signal;

[0009] The second identification circuit has its voltage signal input terminal connected to the output terminal of the DC-DC step-down circuit, and is used to receive the 3.3V voltage signal.

[0010] Its other signal input terminal is used to receive the second control signal;

[0011] The main control circuit has its voltage signal input terminal connected to the output terminal of the DC-DC step-down circuit to receive the 3.3V voltage signal.

[0012] The first signal input terminal of the main control circuit is connected to the signal output terminal of the first identification circuit, and is used to receive the first control signal and output a first trigger signal according to the first control signal.

[0013] The second signal input terminal of the main control circuit is connected to the signal output terminal of the second identification circuit, and is used to receive the second control signal and output the second trigger signal according to the second control signal;

[0014] The driving circuit has its signal input terminal coupled to the signal output terminal of the main control circuit, and is used to receive the first trigger signal or the second trigger signal, and output a driving signal according to the first trigger signal or the second trigger signal.

[0015] The LED light strip has one end connected to the second end of the driving circuit and the other end connected to the power supply.

[0016] When either the first trigger signal or the second trigger signal is high, the driving circuit is triggered and outputs a high-level driving signal, thereby turning on the LED strip.

[0017] When the first trigger signal or the second trigger signal is low, the driving circuit is triggered and outputs a low-level driving signal, and the LED strip is turned off.

[0018] In some embodiments, the driving circuit includes at least a driver and a MOSFET.

[0019] The power input terminal of the driver is connected to the VDD signal terminal.

[0020] The signal input terminal of the driver is coupled to the signal output terminal of the main control circuit, and is used to receive the first trigger signal or the second trigger signal.

[0021] The gate of the MOS transistor is connected to the signal output terminal of the driver to receive the drive signal.

[0022] The drain of the MOSFET is connected to the negative terminal of the LED strip.

[0023] The source of the MOS transistor is connected to the common terminal.

[0024] In some implementations, the main control circuit includes a main controller.

[0025] The first signal input terminal of the main controller is connected to the signal output terminal of the first identification circuit, and is used to receive the first control signal.

[0026] The second signal input terminal of the main controller is connected to the signal output terminal of the second identification circuit, and is used to receive the second control signal.

[0027] The signal output terminal of the main controller is connected to the signal input terminal of the driver.

[0028] In some embodiments, the first identification circuit includes at least a first signal receiving module.

[0029] The signal input terminal of the first signal receiving module is used to receive externally input touch / sensing signals.

[0030] The output terminal of the first signal receiving module is connected to the first signal input terminal of the main controller through a first resistor.

[0031] In some embodiments, the first identification circuit further includes a second resistor and a first TVS diode connected in series.

[0032] The first end of the first TVS diode and one end of the second resistor are connected to the first signal input terminal of the main controller.

[0033] The other end of the second resistor is connected to the output terminal of the DC-DC buck circuit.

[0034] In some embodiments, the second identification circuit includes at least a second signal receiving module.

[0035] The signal input terminal of the second signal receiving module is used to receive external touch / sensing signals.

[0036] The output terminal of the second signal receiving module is connected to the second signal input terminal of the main controller through an eighth resistor.

[0037] In some embodiments, the second identification circuit further includes a seventh resistor and a second TVS diode connected in series.

[0038] The first end of the second TVS diode and one end of the seventh resistor are connected to the second signal input terminal of the main controller.

[0039] The other end of the seventh resistor is connected to the output terminal of the DC-DC step-down circuit.

[0040] In some embodiments, the DC-DC buck circuit includes a power controller and a first inductor.

[0041] The input terminal of the power controller is used to receive the power signal input from the preceding circuit.

[0042] The output terminal of the power controller is connected to one end of the first inductor.

[0043] The other end of the first inductor is connected to the power input terminals of the first identification circuit, the second identification circuit, and the main control circuit, respectively.

[0044] The switch control box circuit described in this utility model includes a DC-DC step-down circuit that outputs a 3.3V voltage signal, a first identification circuit, a second identification circuit, a main control circuit, a drive circuit, and an LED light strip. When the first or second trigger signal is high, the drive circuit is triggered and outputs a high-level drive signal, turning on the LED light strip. When the first or second trigger signal is low, the drive circuit is triggered and outputs a low-level drive signal, turning off the LED light strip. Compared with the prior art, by setting multiple sets of identification circuits that are compatible with and can identify different types of signals, and correspondingly inputting sensing signals, the main control circuit outputs a trigger signal according to the input sensing signal to trigger the drive circuit to act, thereby controlling the working state of the LED light strip. This effectively solves the problem that multiple types of switches require corresponding matching adapter boxes, and their opening sizes are inconsistent, requiring different sized drill bits for drilling and installation, resulting in low installation efficiency and potential damage to home products. Attached Figure Description

[0045] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0046] Figure 1 This is a circuit schematic diagram of an embodiment of the DC-DC step-down circuit provided by this utility model;

[0047] Figure 2 This is a circuit diagram of an embodiment of the first identification circuit, the second identification circuit, and the main control circuit provided by this utility model;

[0048] Figure 3 This is a circuit diagram of an embodiment of the driving circuit and LED light strip provided by this utility model. Detailed Implementation

[0049] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0050] like Figures 1-3 As shown, in the first embodiment of the switch control box circuit of this utility model, the switch control box circuit (110, 120, 130, 140, 150, 160) includes a DC-DC step-down circuit 110, a first identification circuit 120, a second identification circuit 130, a main control circuit 140, a drive circuit 150, and an LED light strip 160.

[0051] The DC-DC step-down circuit 110 is used to receive the input power signal (corresponding to Vbus), and to rectify, filter and regulate it to provide a 3.3V voltage signal for the first identification circuit 120, the second identification circuit 130 and the main control circuit 140.

[0052] The first identification circuit 120 and the second identification circuit 130 are used to acquire the hand scan or touch signal (corresponding to the control signal) of the external input and output the hand scan or touch signal to the main control circuit 140.

[0053] The main control circuit 140 is the core of the circuit. It has the functions of logic operation and signal discrimination, and outputs trigger signals according to the input hand scan or touch signal (corresponding control signal).

[0054] The drive circuit 150 is used to receive and amplify the voltage / current of the trigger signal to increase the drive capability;

[0055] Specifically, the DC-DC step-down circuit 110 is configured at the front end of the switch control box circuit to receive the power signal (corresponding to Vbus) input from the pre-amplifier circuit, and to perform rectification, step-down, filtering and voltage regulation on the input power signal (corresponding to Vbus) to output a 3.3V voltage signal.

[0056] Furthermore, the voltage signal input terminal of the first identification circuit 120 is connected to the output terminal of the DC-DC step-down circuit 110 to receive a 3.3V voltage signal and provide it with operating power.

[0057] Another signal input terminal of the first identification circuit 120 is used to receive a first control signal from an external input, such as a touch, swipe, voice control, or wireless signal;

[0058] Furthermore, the voltage signal input terminal of the second identification circuit 130 is connected to the output terminal of the DC-DC step-down circuit 110 to receive a 3.3V voltage signal and provide it with operating power.

[0059] Another signal input terminal of the second identification circuit 130 is used to receive a second control signal from an external input, such as a touch, swipe, voice control, or wireless signal;

[0060] The voltage signal input terminal of the main control circuit 140 is connected to the output terminal of the DC-DC step-down circuit 110 to receive a 3.3V voltage signal and provide it with operating power.

[0061] The main control circuit 140 has its first signal input terminal connected to the signal output terminal of the first identification circuit 120, and is used to receive the first control signal and output the first trigger signal according to the input first control signal.

[0062] The second signal input terminal of the main control circuit 140 is connected to the signal output terminal of the second identification circuit 130, and is used to receive the second control signal and output the second trigger signal according to the input second control signal;

[0063] Furthermore, the signal input terminal of the drive circuit 150 is coupled to the signal output terminal of the main control circuit 140, and is used to receive the first trigger signal or the second trigger signal, and output a drive signal (high level or low level) according to the first trigger signal or the second trigger signal.

[0064] One end of the LED strip 160 (corresponding to the negative terminal) is connected to the second terminal of the driver circuit 150, and the other end of the LED strip 160 (corresponding to the positive terminal) is connected to the power supply terminal (corresponding to Vbus).

[0065] When either the first or second trigger signal is high, the drive circuit 150 is triggered and outputs a high-level drive signal, thus turning on the LED strip 160.

[0066] When the first or second trigger signal is low, the drive circuit 150 is triggered and outputs a low-level drive signal, and the LED strip 160 is turned off.

[0067] Using this technical solution, by setting up multiple sets of recognition circuits that are compatible with and can identify different types of signals, and correspondingly inputting sensing signals, the main control circuit outputs a trigger signal according to the input sensing signal to trigger the drive circuit to act, thereby controlling the working state of the LED light strip. This can effectively solve the problem that multiple types of switches require corresponding matching adapter boxes, and their opening sizes are not consistent, requiring the replacement of different sized drill bits for drilling and installation, resulting in low installation efficiency and the possibility of damaging home products.

[0068] In some implementations, such as Figure 3 As shown, to improve the driving capability of the circuit, a driver M2 and a MOSFET Q1 can be set in the driving circuit 150.

[0069] Among them, driver M2, as a single-channel high-speed low-side gate driver, provides a high peak pull-up / current pulse for capacitive loads, while providing rail-to-rail drive capability and short propagation delay, and can provide a peak pull-up / sink (symmetric drive) current drive capability of 2A.

[0070] MOSFET Q1 functions as a switch;

[0071] Specifically, the power input terminal (corresponding to pin 5) of driver M2 is connected to the emitter of the first transistor Q2.

[0072] The base of the first transistor Q2 is connected to the VDD signal terminal through the sixth resistor R6.

[0073] The collector of the first transistor Q2 is connected to the VDD signal terminal.

[0074] When the first transistor Q2 is turned on, the VDD voltage signal is input to the power input terminal (pin 5) of the driver M2 through the first transistor Q2.

[0075] The signal input terminal (corresponding to pin 1) of driver M2 is connected to the signal output terminal of main control circuit 140 through the fourth resistor R4, and is used to receive the first trigger signal or the second trigger signal.

[0076] The gate of MOSFET Q1 is connected to the signal output terminals (pins 3 and 4) of driver M2 via resistor R5 to receive drive signals.

[0077] The drain of MOSFET Q1 is connected to the negative terminal of LED strip 160.

[0078] The source of MOSFET Q1 is connected to the common terminal.

[0079] When the first trigger signal or the second trigger signal is low, the driver M2 is controlled to turn off and there is no drive signal output.

[0080] When the first or second trigger signal is high, the driver M2 is controlled to work and outputs a high-level drive signal to control the MOSFET Q1 to conduct. The power supply current (corresponding to Vbus) flows through the LED strip 160 and the drain and source of the MOSFET Q1 to the common terminal to control the LED strip 160 to turn on.

[0081] In some implementations, such as Figure 2 As shown, in order to improve the processing performance of hand scanning or touch signals (corresponding control signals), a main controller M1 can be set in the main control circuit 140, which has the functions of logic operation, signal processing and output trigger signal;

[0082] Specifically, the first signal input terminal (corresponding to pin 8) of the main controller M1 is connected to the signal output terminal (corresponding to pin 2) of the first identification circuit 120 through the first resistor R1. It is used to receive the first control signal, perform calculation and processing on the first control signal, and output a trigger signal (high / low level) according to the state of the first control signal.

[0083] The second signal input terminal (corresponding to pin 1) of the main controller M1 is connected to the signal output terminal (corresponding to pin 2) of the second identification circuit 130 through the eighth resistor R8. It is used to receive the second control signal, perform calculation and processing on the second control signal, and output another trigger signal (high / low level) according to the state of the second control signal.

[0084] The signal output terminal (corresponding to pin 10) of the main controller M1 is connected to the signal input terminal (corresponding to pin 1) of the driver M2 through the fourth resistor R4. The two output trigger signals are used to control the working state of the driver M2.

[0085] In some implementations, such as Figure 2 As shown, in order to identify or be compatible with multiple input signals, a first signal receiving module S1 can be set in the first identification circuit 120, which is used to acquire external input electrical signals;

[0086] Specifically, the signal input terminal of the first signal receiving module S1 is used to receive externally input touch / sensing signals (corresponding control signals).

[0087] The output terminal (corresponding to pin 2) of the first signal receiving module S1 is connected to the first signal input terminal (corresponding to pin 8) of the main controller M1 through the first resistor R1, and the touch / sensing signal (corresponding to the control signal) is output to the main controller M1.

[0088] In some implementations, such as Figure 2 As shown, the first identification circuit 120 also includes a second resistor R2 and a first TVS diode D1 connected in series.

[0089] The second resistor R2 and the first resistor R1 form a voltage divider module.

[0090] The first TVS diode D1 is an overvoltage protector with bidirectional voltage regulation and bidirectional negative resistance characteristics.

[0091] Specifically, the first terminal of the first TVS diode D1 and one terminal of the second resistor R2 are connected to the first signal input terminal (corresponding to pin 8) of the main controller M1, and the second terminal of the first TVS diode D1 is connected to the common terminal.

[0092] The other end of the second resistor R2 is connected to the output terminal of the DC-DC step-down circuit 110.

[0093] When the first signal input terminal (corresponding to pin 8) of the main controller M1 detects a port voltage of <2.1V, it is a hand-scanning and touch-type switch. When the port voltage is >2.8V, it is a human body and door control switch. The main controller M1 determines the type of input signal based on the voltage value of the current control signal and then triggers the corresponding signal.

[0094] In some implementations, such as Figure 2 As shown, in order to identify or be compatible with multiple input signals, a second signal receiving module S2 can be set in the second identification circuit 130, which is used to acquire external input electrical signals;

[0095] Specifically, the signal input terminal of the second signal receiving module S2 is used to receive externally input touch / sensing signals.

[0096] The output terminal (corresponding to pin 2) of the second signal receiving module S2 is connected to the second signal input terminal (corresponding to pin 1) of the main controller M1 through the eighth resistor R8, so as to output the touch / sensing signal (corresponding to the control signal) to the main controller M1.

[0097] In some implementations, such as Figure 2 As shown, the second identification circuit 130 also includes a seventh resistor R7 and a second TVS diode D6 connected in series.

[0098] The seventh resistor R7 and the eighth resistor R8 form a voltage divider module.

[0099] The second TVS diode D6 is an overvoltage protector with bidirectional voltage regulation and bidirectional negative resistance characteristics.

[0100] Specifically, the first terminal of the second TVS diode D6 and one terminal of the seventh resistor R7 are connected to the second signal input terminal (corresponding to pin 1) of the main controller M1.

[0101] The other end of the seventh resistor is connected to the output of the DC-DC step-down circuit 110.

[0102] When the second signal input terminal (corresponding to pin 1) of the main controller M1 detects a port voltage of <2.1V, it is a hand-scanning and touch-type switch. When the port voltage is >2.8V, it is a human body and door control switch. The main controller M1 determines the type of input signal based on the voltage value of the current control signal and then triggers the corresponding signal.

[0103] In some implementations, such as Figure 1 As shown, the DC-DC step-down circuit 110 includes a power controller U1 and a first inductor L1.

[0104] The input terminal (pin 2) of the power controller U1 is used to receive the power signal (Vbus) input from the front-end circuit.

[0105] The output terminal (corresponding to pin 5) of the power controller U1 is connected to one end of the first inductor L1.

[0106] The other end of the first inductor L1 is connected to the power input terminals of the first identification circuit 120, the second identification circuit 130, and the main control circuit 140, respectively.

[0107] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A switch control box circuit, characterized in that, have: The DC-DC step-down circuit is configured at the front end of the switch control box circuit to receive the power signal input from the previous stage circuit, and to perform step-down, filtering and voltage regulation on the input power signal to output a 3.3V voltage signal. The first identification circuit has its voltage signal input terminal connected to the output terminal of the DC-DC step-down circuit, and is used to receive the 3.3V voltage signal. Its other signal input terminal is used to receive the first control signal; The second identification circuit has its voltage signal input terminal connected to the output terminal of the DC-DC step-down circuit, and is used to receive the 3.3V voltage signal. Its other signal input terminal is used to receive the second control signal; The main control circuit has its voltage signal input terminal connected to the output terminal of the DC-DC step-down circuit to receive the 3.3V voltage signal. The first signal input terminal of the main control circuit is connected to the signal output terminal of the first identification circuit, and is used to receive the first control signal and output a first trigger signal according to the first control signal. The second signal input terminal of the main control circuit is connected to the signal output terminal of the second identification circuit, and is used to receive the second control signal and output the second trigger signal according to the second control signal; The driving circuit has its signal input terminal coupled to the signal output terminal of the main control circuit, and is used to receive the first trigger signal or the second trigger signal, and output a driving signal according to the first trigger signal or the second trigger signal. The LED light strip has one end connected to the second end of the driving circuit and the other end connected to the power supply. When either the first trigger signal or the second trigger signal is high, the driving circuit is triggered and outputs a high-level driving signal, thereby turning on the LED strip. When the first trigger signal or the second trigger signal is low, the driving circuit is triggered and outputs a low-level driving signal, and the LED strip is turned off.

2. The switch control box circuit according to claim 1, characterized in that, The driving circuit includes at least a driver and a MOSFET. The power input terminal of the driver is connected to the VDD signal terminal. The signal input terminal of the driver is coupled to the signal output terminal of the main control circuit, and is used to receive the first trigger signal or the second trigger signal. The gate of the MOS transistor is connected to the signal output terminal of the driver to receive the drive signal. The drain of the MOSFET is connected to the negative terminal of the LED strip. The source of the MOS transistor is connected to the common terminal.

3. The switch control box circuit according to claim 2, characterized in that, The main control circuit includes a main controller. The first signal input terminal of the main controller is connected to the signal output terminal of the first identification circuit, and is used to receive the first control signal. The second signal input terminal of the main controller is connected to the signal output terminal of the second identification circuit, and is used to receive the second control signal. The signal output terminal of the main controller is connected to the signal input terminal of the driver.

4. The switch control box circuit according to claim 3, characterized in that, The first identification circuit includes at least a first signal receiving module. The signal input terminal of the first signal receiving module is used to receive externally input touch / sensing signals. The output terminal of the first signal receiving module is connected to the first signal input terminal of the main controller through a first resistor.

5. The switch control box circuit according to claim 4, characterized in that, The first identification circuit also includes a second resistor and a first TVS diode connected in series. The first end of the first TVS diode and one end of the second resistor are connected to the first signal input terminal of the main controller. The other end of the second resistor is connected to the output terminal of the DC-DC step-down circuit.

6. The switch control box circuit according to claim 3, characterized in that, The second identification circuit includes at least a second signal receiving module. The signal input terminal of the second signal receiving module is used to receive external touch / sensing signals. The output terminal of the second signal receiving module is connected to the second signal input terminal of the main controller through an eighth resistor.

7. The switch control box circuit according to claim 6, characterized in that, The second identification circuit also includes a seventh resistor and a second TVS diode connected in series. The first end of the second TVS diode and one end of the seventh resistor are connected to the second signal input terminal of the main controller. The other end of the seventh resistor is connected to the output terminal of the DC-DC step-down circuit.

8. The switch control box circuit according to any one of claims 1-7, characterized in that, The DC-DC buck circuit includes a power controller and a first inductor. The input terminal of the power controller is used to receive the power signal input from the preceding circuit. The output terminal of the power controller is connected to one end of the first inductor. The other end of the first inductor is connected to the power input terminals of the first identification circuit, the second identification circuit, and the main control circuit, respectively.

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