Output circuit of Internet of Things controller

Abstract

The utility model provides an output circuit of an internet of things controller, which comprises a voltage output circuit, a first circuit, a second circuit and a switching circuit, one end of the voltage output circuit is connected with a pulse width modulation signal, the other end of the voltage output circuit is respectively connected with the first circuit and the second circuit, and the voltage output circuit is used for providing stable voltage for the first circuit and the second circuit; the switching circuit is connected with the first circuit and the second circuit and used for selecting one circuit between the first circuit and the second circuit to output electric signals, the first circuit is used for outputting current signals at the output end, the second circuit is used for outputting voltage signals at the output end, and the first circuit or the second circuit can be selected according to user requirements. The Internet of Things controller solves the limitation problem that the output end of the Internet of Things controller is fixed in the prior art, the output end of the Internet of Things controller can be used in various specifications, the same port outputs different modes of electric signals, the Internet of Things controller is suitable for more scenes, and the utilization rate of the Internet of Things controller is improved.

Description

Technical Field

[0001] This utility model relates to the field of Internet of Things (IoT) controller technology, and in particular to an output circuit for an IoT controller. Background Technology

[0002] Smart buildings are a global trend. As users have increasingly higher requirements for smart buildings, energy conservation in building automation systems and cold and heat source control systems within buildings is particularly important.

[0003] Currently, smart building IoT controllers form a complete control system for buildings by controlling various types of sensors and electrical devices. However, in existing technologies, the general port specifications of IoT controller output circuits are not standardized and cannot be reused. This means that when smart buildings require multiple analog signal outputs, the problem can only be solved by adding a new controller, which limits the selection of IoT controllers. Utility Model Content

[0004] This invention provides an output circuit for an Internet of Things (IoT) controller, which at least solves the above-mentioned technical problems existing in the prior art.

[0005] This invention provides an output circuit for an Internet of Things (IoT) controller. The method includes: a voltage output circuit, a first circuit, a second circuit, and a switching circuit.

[0006] One end of the voltage output circuit is connected to a pulse width modulation signal, and the other end is connected to the first circuit and the second circuit respectively, for providing a stable voltage to the first circuit and the second circuit;

[0007] The switching circuit includes circuits connected to the first circuit and the second circuit, used to select one circuit between the first circuit and the second circuit to output an electrical signal;

[0008] The first circuit is used to output a current signal at the output terminal, and includes: a first enhancement sub-circuit, a first feedback sub-circuit, and a first voltage regulator sub-circuit; the first enhancement sub-circuit is connected to the first feedback sub-circuit and the first voltage regulator sub-circuit respectively, and is used to enhance the current input to the first feedback sub-circuit; the first feedback sub-circuit is used to integrate the current output by the first enhancement sub-circuit into an integrated voltage input to the first voltage regulator sub-circuit; the first voltage regulator sub-circuit is used to stabilize the current signal output at the output terminal by comparing the voltage output by the voltage output circuit with the voltage fed back by the first feedback sub-circuit.

[0009] The second circuit is used to output a voltage signal at the output terminal, including: a second voltage regulator sub-circuit and a second enhancement sub-circuit; the second enhancement sub-circuit is connected to both ends of the second voltage regulator sub-circuit respectively, and is used to enhance the current input to the second voltage regulator sub-circuit. The second voltage regulator sub-circuit is used to stabilize the voltage signal output at the output terminal by comparing the voltage output by the voltage output circuit with the voltage fed back by the second enhancement sub-circuit.

[0010] In one embodiment, the voltage output circuit includes a first filter sub-circuit and a first voltage amplifier. The first filter sub-circuit includes at least one set of filter resistors and filter capacitors connected to the input terminal of the first voltage amplifier. The output terminal of the first voltage amplifier is connected to the first circuit and the second circuit respectively.

[0011] In one embodiment, the first voltage regulator sub-circuit includes a second filter sub-circuit and a second voltage amplifier. The second filter sub-circuit is connected to the voltage output circuit and the first input terminal of the second voltage amplifier, respectively. The second input terminal of the second voltage amplifier is connected to the first feedback sub-circuit, and the output terminal of the second voltage amplifier is connected to the first enhancement sub-circuit.

[0012] In one embodiment, the first enhancement sub-circuit includes a first supplementary power supply and a first transistor. The first terminal of the first transistor is connected to the voltage output by the first voltage regulator sub-circuit, the second terminal of the first transistor is connected to the first supplementary power supply, and the third terminal of the first transistor is connected to the first feedback sub-circuit.

[0013] In one embodiment, the first feedback sub-circuit includes a differential amplifier, the input of which is connected to the first enhancement sub-circuit, and the output of which is connected to the first voltage regulator sub-circuit.

[0014] In one embodiment, the second voltage regulator sub-circuit includes a third filter sub-circuit and a third voltage amplifier. The third filter sub-circuit is connected to the voltage output circuit and the first input terminal of the third voltage amplifier, respectively. The second input terminal and the output terminal of the third voltage amplifier are connected to the second enhancement sub-circuit, respectively.

[0015] In one embodiment, the second enhancement sub-circuit includes a second supplementary power supply and a second transistor. The first terminal of the second transistor is connected to the voltage output by the second voltage regulator sub-circuit, the second terminal of the second transistor is connected to the second supplementary power supply, and the third terminal of the second transistor is connected to the third voltage amplifier.

[0016] In one embodiment, the switching circuit includes a first switching circuit and a second switching circuit. The first switching circuit includes a first optocoupler for controlling the switching of the first circuit, and the second switching circuit includes a second optocoupler for controlling the switching of the second circuit.

[0017] In one possible implementation, it further includes:

[0018] A protection circuit, including a fuse resistor and a Zener diode, is disposed at the output terminal to provide safety protection for the output circuit of the Internet of Things controller.

[0019] An isolation diode is used to isolate the first circuit from the second circuit.

[0020] In one possible implementation, it further includes:

[0021] Filter capacitors are used to filter the power supply to provide a stable power supply.

[0022] The output circuit of the IoT controller provided by this utility model includes: a voltage output circuit, a first circuit, a second circuit, and a switching circuit. One end of the voltage output circuit is connected to a pulse width modulation signal, and the other end is connected to the first circuit and the second circuit respectively, for providing a stable voltage to the first circuit and the second circuit. The switching circuit is connected to the first circuit and the second circuit, for selecting one of the circuits between the first circuit and the second circuit for outputting an electrical signal. The first circuit is used to output a current signal at the output terminal, and the second circuit is used to output a voltage signal at the output terminal. The first circuit or the second circuit can be selected according to user needs, which solves the limitation of fixed output terminals of existing IoT controllers, realizes the use of multiple specifications of IoT controller output terminals, and enables the same port to output different modes of electrical signals, making it suitable for more scenarios and improving the utilization rate of IoT controllers.

[0023] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0024] The above and other objects, features, and advantages of the present invention will become readily apparent from the following detailed description of exemplary embodiments, taken in conjunction with the accompanying drawings. Several embodiments of the present invention are illustrated in the drawings by way of example and not limitation, in which:

[0025] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0026] Figure 1 This diagram illustrates the structure of the output circuit of an Internet of Things (IoT) controller according to an embodiment of the present invention.

[0027] Figure 2 A schematic diagram of the output circuit of an exemplary Internet of Things controller provided in an embodiment of the present invention is shown. Detailed Implementation

[0028] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] Figure 1 A schematic diagram of the output circuit of an Internet of Things controller provided in an embodiment of this utility model is shown below. Figure 1 The circuit shown includes: a voltage output circuit 10, a first circuit 20, a second circuit 30, and a switching circuit 40.

[0030] One end of the voltage output circuit 10, Y0_AO1, is connected to a pulse width modulation signal, and the other end is connected to the first circuit 20 and the second circuit 30 respectively, for providing a stable voltage to the first circuit 20 and the second circuit 30.

[0031] The switching circuit 40 includes circuits connected to the first circuit 20 and the second circuit 30, and is used to select one circuit between the first circuit 20 and the second circuit 30 to output an electrical signal.

[0032] The first circuit 20 is used to output a current signal at the output terminal AO1, and includes: a first enhancement sub-circuit 210, a first feedback sub-circuit 220, and a first voltage regulator sub-circuit 230; the first enhancement sub-circuit 210 is connected to the first feedback sub-circuit 220 and the first voltage regulator sub-circuit 230 respectively, and is used to enhance the current input to the first feedback sub-circuit 220; the first feedback sub-circuit 220 is used to integrate the current output by the first enhancement sub-circuit 210 into an integrated voltage input to the first voltage regulator sub-circuit 230; the first voltage regulator sub-circuit 230 is used to stabilize the current signal output at the output terminal by comparing the voltage output by the voltage output circuit 10 with the voltage feedback by the first feedback sub-circuit 220.

[0033] The second circuit 30 is used to output a voltage signal at the output terminal, including: a second voltage regulator sub-circuit 310 and a second enhancement sub-circuit 320; the second enhancement sub-circuit 320 is connected to both ends of the second voltage regulator sub-circuit 310 respectively, and is used to enhance the current input to the second voltage regulator sub-circuit 310. The second voltage regulator sub-circuit 310 is used to stabilize the voltage signal output at the output terminal by comparing the voltage output by the voltage output circuit 10 with the voltage fed back by the second enhancement sub-circuit 320.

[0034] Pulse Width Modulation (PWM) is a method for digitally encoding analog signal levels. Using a high-resolution counter, the duty cycle of a square wave is modulated to encode the level of a specific analog signal. The frequency of the PWM signal is fixed; the duty cycle is varied by changing the duration of the high and low levels, with a duty cycle ranging from 0% to 100% representing the signal.

[0035] The switching circuit 40 can be a switch composed of different forms and different devices, which can be set according to user needs to select whether the first circuit 20 or the second circuit 30 is turned on.

[0036] Specifically, in this embodiment, to output different electrical signals at the same output terminal, the circuit is divided into a first circuit 20 and a second circuit 30. The first circuit 20 and the second circuit 30 are controlled by a switching circuit 40. When a current signal needs to be output at the output terminal AO1, the switching circuit 40 controls the first circuit 20 to conduct; when a voltage signal needs to be output at the output terminal AO1, the switching circuit 40 controls the second circuit 30 to conduct. By switching different circuits using the switching circuit 40, the output terminal AO1 is multiplexed, improving its utilization rate.

[0037] In one embodiment, the voltage output circuit 10 includes a first filter sub-circuit and a first voltage amplifier. The first filter sub-circuit includes at least one set of filter resistors and filter capacitors connected to the input terminal of the first voltage amplifier. The output terminal of the first voltage amplifier is connected to the first circuit and the second circuit respectively.

[0038] Specifically, in this embodiment, the PWM signal output by Y0_AO1 is filtered by the first filter sub-circuit to output an analog signal, and the analog signal is output to the first circuit 20 and the second circuit 30 via the first voltage amplifier.

[0039] For ease of understanding, the following is in conjunction with the appendix. Figure 2 The output circuit of the Internet of Things controller provided in the embodiments of this utility model will be described in detail.

[0040] like Figure 2 As shown, YO_AO1 in this embodiment is the PWM output level. The first filter sub-circuit includes two sets of filter resistors and filter capacitors, namely R1, R2, C1 and C2, which filter the PWM output level and input it to the input terminal 3 of the subsequent first voltage amplifier U51A. The output terminal 1 of the first voltage amplifier is connected to the first circuit 20 and the second circuit 30 respectively, and the output terminal 1 of the first voltage amplifier is also connected to its input terminal 2, serving as a follower voltage amplifier to ensure that the output voltage of its output terminal 1 is consistent with that of its input terminal 3.

[0041] In one embodiment, the first voltage regulator sub-circuit includes a second filter sub-circuit and a second voltage amplifier. The second filter sub-circuit is connected to the voltage output circuit and the first input terminal of the second voltage amplifier, respectively. The second input terminal of the second voltage amplifier is connected to the first feedback sub-circuit, and the output terminal of the second voltage amplifier is connected to the first enhancement sub-circuit.

[0042] like Figure 2 As shown, the second filter sub-circuit includes a filter capacitor C3 and a filter resistor R3, which further filters the voltage output by the first voltage amplifier U51A and inputs it to the first input terminal 5 of the second voltage amplifier U51B. The output terminal 7 of the second voltage amplifier U51B can be connected to a current-limiting resistor R4. Since the voltage output by the output terminal 7 of the second voltage amplifier U51B is limited, it can be connected to the first enhancement sub-circuit to enhance the circuit voltage. It is also connected to the first feedback sub-circuit through the second input terminal 6 of the second voltage amplifier U51B to stabilize the current signal at the output terminal AO1 of the entire circuit.

[0043] In one embodiment, the first enhancement sub-circuit includes a first supplementary power supply and a first transistor. The first terminal of the first transistor is connected to the voltage output by the first voltage regulator sub-circuit, the second terminal of the first transistor is connected to the first supplementary power supply, and the third terminal of the first transistor is connected to the first feedback sub-circuit.

[0044] like Figure 2 As shown, the first enhancement sub-circuit includes a first transistor Q44 and a first supplementary power supply VS_A0 with a voltage of 15V. It may also include current-limiting resistors R5 and R6. One end of the current-limiting resistor R5 can be connected to the current-limiting resistor R4, and the other end can be connected to the first terminal 1 of the first transistor Q44, i.e., the base of the first transistor Q44, to receive the voltage output from the first voltage regulator sub-circuit. The second terminal 2 of the first transistor Q44, i.e., the emitter, is connected to the first supplementary power supply VS_A0, and the third terminal 3 of the first transistor, i.e., the collector, is connected to the first feedback sub-circuit.

[0045] In this embodiment, the first supplementary power supply VS_A0 supplies power to the first transistor Q44 to drive the current signal in the first transistor Q44 enhancement circuit.

[0046] In one embodiment, the first feedback sub-circuit includes a differential amplifier, the input of which is connected to the first enhancement sub-circuit, and the output of which is connected to the first voltage regulator sub-circuit.

[0047] like Figure 2 As shown, the first feedback sub-circuit includes a differential amplifier U51C and resistors R7-R13. In this embodiment, a sampling resistor R7 is provided at the output terminal of the first transistor Q44 within the first enhancement sub-circuit to collect the current in the circuit. A voltage is output by differentially dividing the current output by the first transistor Q44 using resistors R8-R11. This voltage is then divided by resistors R12 and R13 to obtain an integrated voltage, which is input to the second input terminal 6 of the second voltage amplifier U51B within the first voltage regulator sub-circuit. This allows the second voltage amplifier U51B to compare the input voltage at the first input terminal 5 with that at the second input terminal 6, forming negative feedback to control the output current at the output terminal 7, thereby stabilizing the output current at the output terminal AO1.

[0048] In one embodiment, the switching circuit includes a first switching circuit and a second switching circuit, wherein the first switching circuit includes a first optocoupler for controlling the switching of the first circuit.

[0049] like Figure 2 As shown, the first switching circuit includes a first optocoupler U54, a current-limiting resistor R14, and a first switch C1_AOI. In this embodiment, the first switch C1_AOI controls whether the first circuit outputs a current signal. When a voltage is input to the first switch C1_AOI, the first optocoupler U54 is turned on to cut off the current input to the first enhancement sub-circuit, thereby preventing current from being output at the output terminal AO1. When no voltage is input to the first switch C1_AOI, the first optocoupler U54 is turned off to not obstruct the current input to the first enhancement sub-circuit, thereby allowing the first circuit to output current normally at the output terminal AO1.

[0050] This embodiment enables the use of the first circuit when the user needs it by setting the electrical components in the first circuit. The voltage output is converted into the current output, and the current signal is normally output at the output terminal AO1, for example, 4-20mA.

[0051] In one embodiment, the second voltage regulator sub-circuit includes a third filter sub-circuit and a third voltage amplifier. The third filter sub-circuit is connected to the voltage output circuit and the first input terminal of the third voltage amplifier, respectively. The second input terminal and the output terminal of the third voltage amplifier are connected to the second enhancement sub-circuit.

[0052] like Figure 2 As shown, the third filter sub-circuit includes a set of filter resistors R15 and filter capacitor C4, which further filters the voltage output from the output terminal 1 of the first voltage amplifier U51A and inputs it to the first input terminal 12 of the third voltage amplifier U51D. The output terminal 14 of the third voltage amplifier U51D can be connected to a current-limiting resistor R16. Since the voltage output from the output terminal 14 of the third voltage amplifier U51D is limited, it can be connected to the second enhancement sub-circuit at the output terminal 14 to enhance the circuit voltage. It is also directly connected to the other end of the second enhancement sub-circuit through the second input terminal 13 of the third voltage amplifier U51D to stabilize the voltage signal at the output terminal AO1 of the entire circuit.

[0053] In one embodiment, the second enhancement sub-circuit includes a second supplementary power supply and a second transistor. The first terminal of the second transistor is connected to the voltage output by the second voltage regulator sub-circuit, the second terminal of the second transistor is connected to the second supplementary power supply, and the third terminal of the second transistor is connected to the third voltage amplifier.

[0054] like Figure 2 As shown, the second enhancement circuit includes a second transistor Q43 and a second supplementary power supply VS_A0 with a voltage of 15V. It may also include current-limiting resistors R17 and R18. One end of the current-limiting resistor R17 can be connected to the current-limiting resistor R16, and the other end can be connected to the first terminal 1 of the second transistor Q43, i.e., the base of the second transistor Q44, to receive the voltage output from the second voltage regulator circuit. The second terminal 2, i.e., the emitter of the second transistor Q44, is connected to the second supplementary power supply VS_A0, and the third terminal 3, i.e., the collector of the second transistor, is connected to the second input terminal 13 of the third voltage amplifier U51D.

[0055] In this embodiment, a second supplementary power supply VS_A0 supplies power to the second transistor Q43 to drive the current signal in the transistor Q43 enhancement circuit. In addition, this embodiment can also include resistors R19-R21 in the second voltage regulator circuit to integrate the voltage output from the second transistor Q43 into the second input terminal 13 of the third voltage amplifier U51D. This allows the third voltage amplifier U51D to compare the input voltages at the first input terminal 12 and the second input terminal 13, adjusting the output voltage at the output terminal 14 and thus stabilizing the output voltage at the output terminal AO1.

[0056] In one embodiment, the switching circuit includes a first switching circuit and a second switching circuit. The second switching circuit includes a second optocoupler for controlling the switching of the second circuit.

[0057] like Figure 2 As shown, the second switching circuit includes a second optocoupler U55, a current-limiting resistor R22, and a second switch C1_AOU. In this embodiment, the second switch C1_OU controls whether the second circuit outputs a voltage signal. When a voltage is input to the second switch C1_OU, the second optocoupler U55 is turned on to cut off the current input to the second enhancement sub-circuit, thereby preventing voltage output at the output terminal AO1. When no voltage is input to the second switch C1_OU, the second optocoupler U55 is turned off to not obstruct the current input to the second enhancement sub-circuit, thus allowing the second circuit to output voltage normally at the output terminal AO1.

[0058] This embodiment enables the use of the second circuit when required by the user by setting electrical components within the second circuit. Through voltage amplification, the second circuit can output a normal voltage signal at the output terminal AO1, for example, it can output 0-10V.

[0059] In one possible implementation, it further includes: a protection circuit, comprising a fuse resistor and a Zener diode, disposed at the output terminal, for providing safety protection for the output circuit of the IoT controller; and an isolation diode for isolating the first circuit from the second circuit.

[0060] like Figure 2 As shown, this embodiment also includes a fuse resistor F21, a Zener diode D100, a Zener diode GD18, an isolation diode D94, and an isolation diode D95. The fuse resistor F21 provides overload protection; when the current in the circuit exceeds a certain limit, the fuse resistor F21 will break the circuit by melting or other means, thereby protecting other components in the circuit from damage. Zener diodes D100 and GD18 maintain the voltage stability in the circuit, achieving a more stable voltage. Isolation diodes D94 and D95 ​​isolate the first circuit from the second circuit to prevent interference, and finally output the corresponding electrical signal through the output terminal AO1.

[0061] In one embodiment, it further includes a filter capacitor to filter all power supplies in the output circuit of the IoT controller to provide a stable power supply.

[0062] like Figure 2As shown, this embodiment also includes filter capacitors C138 and C139, which are bypass capacitors, used to filter the power supply in the circuit, especially to provide stable power to the first voltage amplifier U51A, the second voltage amplifier U51B, the differential amplifier U51C, and the third voltage amplifier U51D.

[0063] This embodiment uses a single PWM output, which, after filtering, outputs an analog signal. This analog signal is simultaneously supplied to two output circuits: the first circuit (4-20mA) and the second circuit (0-10V). The corresponding 4-20mA and 0-10V outputs are then combined using a diode and output through a single port AO1. This embodiment allows for software-configurable switching circuits to achieve different output modes on the same port AO1, catering to various scenario requirements.

[0064] The output circuit of the IoT controller provided by this utility model includes: a voltage output circuit, a first circuit, a second circuit, and a switching circuit. One end of the voltage output circuit is connected to a pulse width modulation signal, and the other end is connected to the first circuit and the second circuit respectively, for providing a stable voltage to the first circuit and the second circuit. The switching circuit is connected to the first circuit and the second circuit, for selecting one of the circuits between the first circuit and the second circuit for outputting an electrical signal. The first circuit is used to output a current signal at the output terminal, and the second circuit is used to output a voltage signal at the output terminal. The first circuit or the second circuit can be selected according to user needs, which solves the limitation of fixed output terminals of existing IoT controllers, realizes the use of multiple specifications of IoT controller output terminals, and enables the same port to output different modes of electrical signals, making it suitable for more scenarios and improving the utilization rate of IoT controllers.

[0065] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. Furthermore, the described specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0066] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0067] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An output circuit for an Internet of Things (IoT) controller, characterized in that, The circuit includes: a voltage output circuit, a first circuit, a second circuit, and a switching circuit. One end of the voltage output circuit is connected to a pulse width modulation signal, and the other end is connected to the first circuit and the second circuit respectively, for providing a stable voltage to the first circuit and the second circuit; The switching circuit is connected to the first circuit and the second circuit respectively, and is used to select one circuit between the first circuit and the second circuit to output an electrical signal; The first circuit is used to output a current signal at the output terminal, and includes: a first enhancement sub-circuit, a first feedback sub-circuit, and a first voltage regulator sub-circuit; the first enhancement sub-circuit is connected to the first feedback sub-circuit and the first voltage regulator sub-circuit respectively, and is used to enhance the current input to the first feedback sub-circuit; the first feedback sub-circuit is used to integrate the current output by the first enhancement sub-circuit into an integrated voltage input to the first voltage regulator sub-circuit; the first voltage regulator sub-circuit is used to stabilize the current signal output at the output terminal by comparing the voltage output by the voltage output circuit with the voltage fed back by the first feedback sub-circuit. The second circuit is used to output a voltage signal at the output terminal, including: a second voltage regulator sub-circuit and a second enhancement sub-circuit; the second enhancement sub-circuit is connected to both ends of the second voltage regulator sub-circuit respectively, and is used to enhance the current input to the second voltage regulator sub-circuit. The second voltage regulator sub-circuit is used to stabilize the voltage signal output at the output terminal by comparing the voltage output by the voltage output circuit with the voltage fed back by the second enhancement sub-circuit.

2. The circuit according to claim 1, wherein, The voltage output circuit includes a first filter sub-circuit and a first voltage amplifier. The first filter sub-circuit includes at least one set of filter resistors and filter capacitors connected to the input terminal of the first voltage amplifier. The output terminal of the first voltage amplifier is connected to the first circuit and the second circuit respectively.

3. The circuit according to claim 2, wherein, The first voltage regulator circuit includes a second filter circuit and a second voltage amplifier. The second filter circuit is connected to the voltage output circuit and the first input terminal of the second voltage amplifier. The second input terminal of the second voltage amplifier is connected to the first feedback circuit. The output terminal of the second voltage amplifier is connected to the first enhancement circuit.

4. The circuit according to claim 3, wherein, The first enhancement sub-circuit includes a first supplementary power supply and a first transistor. The first terminal of the first transistor is connected to the voltage output of the first voltage regulator sub-circuit, the second terminal of the first transistor is connected to the first supplementary power supply, and the third terminal of the first transistor is connected to the first feedback sub-circuit.

5. The circuit according to claim 4, wherein, The first feedback sub-circuit includes a differential amplifier, the input of which is connected to the first enhancement sub-circuit, and the output of which is connected to the first voltage regulator sub-circuit.

6. The circuit according to claim 5, wherein, The second voltage regulator circuit includes a third filter circuit and a third voltage amplifier. The third filter circuit is connected to the voltage output circuit and the first input terminal of the third voltage amplifier, respectively. The second input terminal and the output terminal of the third voltage amplifier are connected to the second enhancement circuit.

7. The circuit according to claim 6, wherein, The second enhancement sub-circuit includes a second supplementary power supply and a second transistor. The first terminal of the second transistor is connected to the voltage output of the second voltage regulator sub-circuit, the second terminal of the second transistor is connected to the second supplementary power supply, and the third terminal of the second transistor is connected to the third voltage amplifier.

8. The circuit according to claim 7, wherein, The switching circuit includes a first switching circuit and a second switching circuit. The first switching circuit includes a first optocoupler for controlling the switching of the first circuit. The second switching circuit includes a second optocoupler for controlling the switching of the second circuit.

9. The circuit according to claim 8, characterized in that, Also includes: A protection circuit, including a fuse resistor and a Zener diode, is disposed at the output terminal to provide safety protection for the output circuit of the Internet of Things controller. An isolation diode is used to isolate the first circuit from the second circuit.

10. The circuit according to claim 9, characterized in that, The circuit also includes: Filter capacitors are used to filter the power supply to provide a stable power supply.

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