Circuit structure of a three-phase infrared control device

Abstract

The utility model relates to a kind of circuit structure of three-phase infrared control instrument, including linear power supply and control circuit, control circuit is provided with control chip;Still including and the three-phase zero point sampling circuit of linear power supply, control circuit, three-phase current sampling circuit, ambient temperature sampling circuit, radiator temperature sampling circuit, three-phase output pulse control circuit, thermocouple signal sampling circuit are connected.This utility model can effectively solve the problem that current value and internal temperature data of each phase cannot be directly and intuitively viewed in real time by existing infrared control instrument.

Description

Technical Field

[0001] This utility model relates to an infrared controller, and more particularly to a circuit structure for a three-phase infrared controller. Background Technology

[0002] Existing infrared controllers, due to their unreasonable design, cannot provide real-time and intuitive viewing of phase current and internal temperature data. Summary of the Invention

[0003] The purpose of this invention is to provide a circuit structure for a three-phase infrared controller, which solves the problem that existing infrared controllers cannot provide real-time and intuitive viewing of the current values ​​and internal temperature data of each phase.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a circuit structure of a three-phase infrared controller, including a linear power supply and a control circuit, wherein the control circuit is equipped with a control chip U17; it also includes a three-phase zero-point sampling circuit, a three-phase current sampling circuit, an ambient temperature sampling circuit, a radiator temperature sampling circuit, a three-phase output pulse control circuit, and a thermocouple signal sampling circuit connected to the linear power supply and the control circuit. The three-phase zero-point sampling circuit and the three-phase output pulse control circuit are respectively provided for phases A, B, and C, and the three-phase current sampling circuit is respectively provided for phases A, B, and C. The system includes one or three three-phase zero-point sampling circuits connected at their center points. Each of the three three-phase zero-point sampling circuits is connected to a corresponding pin (pins 6, 26, and 25) of the control chip U17. Each of the three three-phase output pulse control circuits is connected to a corresponding pin (pins 22, 21, and 18) of the control chip U17. Each three-phase output pulse control circuit has a fifth terminal J5 connected to an external module. The system also includes a digital display connected to the control chip U17, which displays the real-time temperatures of each phase circuit, thermocouples, ambient temperature, and radiator temperature. The three three-phase current sampling circuits are respectively connected to one of the corresponding pins 10, 14 and 15 of the control chip U17. Each three-phase current sampling circuit is provided with a first terminal J1 for connecting to an external current transformer.

[0005] The thermocouple signal sampling circuit is connected to pin 8 ADC TC of the control chip U17. The thermocouple signal sampling circuit is provided with a first socket J7 that is connected to the thermocouple sensor used to collect internal temperature. The ambient temperature sampling circuit is connected to pin 7 (ADC Env) of the control chip U17; the ambient temperature sampling circuit is equipped with a temperature sampling diode D18 for collecting ambient temperature data. The heat sink temperature sampling circuit is connected to pin 9 of the control chip U17, which is the SENSOR ADC. The heat sink temperature sampling circuit is equipped with an eighth socket J8 for connecting to the temperature sensor.

[0006] Furthermore, the thermocouple signal sampling circuit includes a fifth bidirectional diode D5, a sixth bidirectional diode D6, and a fourth operational amplifier chip U4. The common terminal (pin 3) of the fifth bidirectional diode D5 is connected to pin 2 of the fourth operational amplifier chip U4, and the common terminal (pin 3) of the sixth bidirectional diode D6 is connected to pin 8 (ADC TC) of the control chip U17. The fourth operational amplifier chip U4 is connected to a linear power supply, and its pin 6 is connected to pin 8 (ADC TC) of the control chip U17.

[0007] Furthermore, the three-phase current sampling circuit is equipped with a third transport amplifier U3, and pin 1 of the third transport amplifier U3 is connected to one of the corresponding pins 10, 14, and 15 of the control chip U17.

[0008] Furthermore, the output pulse control circuit includes a first fuse F1, a second fuse F2, a second high-frequency pulse transformer T2, a third high-frequency pulse transformer T3, a fourth transistor Q4, a single-crystal transistor Q1, and a fourteenth diode D14. The base of the fourth transistor Q4 is connected to one of the corresponding pins 22, 21, and 3 of the control chip U17 via the single-crystal transistor Q1. The collector of the fourth transistor Q4 is connected to the fourteenth diode D14 and the left input terminals of the second and third high-frequency pulse transformers T2 and T3. The first fuse F1 is located between the right output terminal of the second high-frequency pulse transformer T2 and pins J51 (R-K2) of the fifth terminal, and the thirteenth diode D13 is located between the right output terminal of the third high-frequency pulse transformer T3 and pins J54 (R-K1) of the fifth terminal, and the sixteenth diode D16 is located between the right output terminal of the third high-frequency pulse transformer T3 and pins J53 (R-G1) of the fifth terminal.

[0009] The beneficial effects of this utility model are as follows: The coordinated operation of the control chip U17, linear power supply, three-phase zero-point sampling circuit, three-phase current sampling circuit, ambient temperature sampling circuit, radiator temperature sampling circuit, three-phase output pulse control circuit, and thermocouple signal sampling circuit enables zero-point sampling and current measurement of three-phase current. It also enables real-time sampling of ambient temperature, radiator temperature, and internal temperature. Furthermore, by connecting a digital display to the control chip U17, the current values ​​of the three-phase lines, ambient temperature, radiator temperature, and internal temperature can be displayed in real time. The entire structure is simple and reliable. Simultaneously, it provides the market with a new circuit structure for a three-phase infrared controller.

[0010] The first fuse F1 is protected by setting the thirteenth diode D13, the sixteenth diode D16, the first fuse F1, and the second fuse F2.

[0011] The fourth transistor Q4 is protected by setting the fourteenth diode D14.

[0012] The fourth operational amplifier chip U4 is protected by setting the fifth bidirectional diode D5, and the control chip U17 is protected by setting the sixth bidirectional diode D6.

[0013] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0014] Figure 1 This is the circuit diagram for the control circuit.

[0015] Figure 2 This is a schematic diagram of the A-phase zero-point sampling circuit in a three-phase zero-point sampling circuit.

[0016] Figure 3 This is a schematic diagram of the A-phase current sampling circuit in a three-phase current sampling circuit.

[0017] Figure 4 This is a schematic diagram of the A-phase output pulse control circuit in a three-phase output pulse control circuit.

[0018] Figure 5 This is a schematic diagram of a thermocouple signal sampling circuit.

[0019] Figure 6 This is a schematic diagram of an ambient temperature sampling circuit.

[0020] Figure 7 This is a schematic diagram of a heat sink temperature sampling circuit.

[0021] Figure 8 A schematic diagram of a linear power supply.

[0022] Figure 9 A schematic diagram of a digital display. Detailed Implementation

[0023] Examples, such as Figures 1 to 9The circuit structure of a three-phase infrared controller shown includes a linear power supply and a control circuit. The control circuit includes a control chip U17. It also includes a three-phase zero-point sampling circuit, a three-phase current sampling circuit, an ambient temperature sampling circuit, a radiator temperature sampling circuit, a three-phase output pulse control circuit, and a thermocouple signal sampling circuit, all connected to the linear power supply and control circuit. One three-phase zero-point sampling circuit and one three-phase output pulse control circuit are respectively provided for phases A, B, and C. One three-phase current sampling circuit is also provided for each of phases A, B, and C. The three three-phase zero-point sampling circuits... The sampling circuits of the point sampling circuit are connected to the center point. The three three-phase zero-point sampling circuits are respectively connected to one of the corresponding pins 6, 26, and 25 of the control chip U17. The three three-phase output pulse control circuits are respectively connected to one of the corresponding pins 22, 21, and 18 of the control chip U17. Each of the three-phase output pulse control circuits is provided with a fifth terminal J5 connected to an external module. It also includes a digital display connected to the control chip U17. The digital display is used to display the real-time temperature of each phase circuit, thermocouple, ambient temperature, and radiator temperature. The three three-phase current sampling circuits are respectively connected to one of the corresponding pins 10, 14 and 15 of the control chip U17. Each three-phase current sampling circuit is provided with a first terminal J1 for connecting to an external current transformer.

[0024] The thermocouple signal sampling circuit is connected to pin 8 ADC TC of the control chip U17. The thermocouple signal sampling circuit is provided with a first socket J7 that is connected to the thermocouple sensor used to collect internal temperature. The ambient temperature sampling circuit is connected to pin 7 (ADC Env) of the control chip U17; the ambient temperature sampling circuit is equipped with a temperature sampling diode D18 for collecting ambient temperature data. The heat sink temperature sampling circuit is connected to pin 9 of the control chip U17, which is the SENSOR ADC. The heat sink temperature sampling circuit is equipped with an eighth socket J8 for connecting to the temperature sensor.

[0025] The thermocouple signal sampling circuit includes a fifth bidirectional diode D5, a sixth bidirectional diode D6, and a fourth operational amplifier chip U4. The common terminal (pin 3) of the fifth bidirectional diode D5 is connected to pin 2 of the fourth operational amplifier chip U4. The common terminal (pin 3) of the sixth bidirectional diode D6 is connected to pin 8 (ADC TC) of the control chip U17. The fourth operational amplifier chip U4 is connected to a linear power supply, and its pin 6 is connected to pin 8 (ADC TC) of the control chip U17.

[0026] The three-phase current sampling circuit is equipped with a third transport amplifier U3. Pin 1 of the third transport amplifier U3 is connected to one of the corresponding pins 10, 14, and 15 of the control chip U17.

[0027] The output pulse control circuit includes a first fuse F1, a second fuse F2, a second high-frequency pulse transformer T2, a third high-frequency pulse transformer T3, a fourth transistor Q4, a single-crystal transistor Q1, and a fourteenth diode D14. The base of the fourth transistor Q4 is connected to pins 22, 21, and 3 of the control chip U17 via the single-crystal transistor Q1. The collector of the fourth transistor Q4 is connected to the fourteenth diode D14 and the left input terminals of the second and third high-frequency pulse transformers T2 and T3. The first fuse F1 is located between the right output terminal of the second high-frequency pulse transformer T2 and pins J51 (R-K2) of the fifth terminal, and the thirteenth diode D13 is located between the first and third terminals J52 (R-G2). The second fuse F2 is located between the right output terminal of the third high-frequency pulse transformer T3 and pins J54 (R-K1) of the fifth terminal, and the sixteenth diode D16 is located between the second and third terminals J53 (R-G1).

[0028] In the description of this utility model, it should be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. 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 one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Additionally, the term "comprising" and any variations thereof are intended to cover non-exclusive inclusion.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments. Unless the context clearly indicates otherwise, the singular forms “a” and “an” as used herein are also intended to include the plural. It should also be understood that the terms “comprising” and / or “including” as used herein specify the presence of the stated features, integers, steps, operations, units, and / or components, without excluding the presence or addition of one or more other features, integers, steps, operations, units, components, and / or combinations thereof.

[0031] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A circuit structure for a three-phase infrared controller, characterized in that: The system includes a linear power supply and control circuit, with a control chip (U17) installed in the control circuit. It also includes a three-phase zero-point sampling circuit, a three-phase current sampling circuit, an ambient temperature sampling circuit, a radiator temperature sampling circuit, a three-phase output pulse control circuit, and a thermocouple signal sampling circuit, all connected to the linear power supply and control circuit. One three-phase zero-point sampling circuit and one three-phase output pulse control circuit are respectively installed for phases A, B, and C. One three-phase current sampling circuit is also provided for each of phases A, B, and C. The sampling circuit center of each of the three three-phase zero-point sampling circuits... The circuits are connected to the control chip (U17). The three three-phase zero-point sampling circuits are connected to one of the corresponding pins 6, 26, and 25 of the control chip (U17). The three three-phase output pulse control circuits are connected to one of the corresponding pins 22, 21, and 18 of the control chip (U17). Each three-phase output pulse control circuit is equipped with a fifth terminal (J5) connected to an external module. The circuit also includes a digital display connected to the control chip (U17). The digital display is used to display the real-time temperature of each phase circuit, the thermocouple, the ambient temperature, and the radiator temperature. The three three-phase current sampling circuits are connected to one of the corresponding pins 10, 14 and 15 of the control chip (U17), and each three-phase current sampling circuit is provided with a first terminal (J1) for connecting to an external current transformer. The thermocouple signal sampling circuit is connected to the 8-pin ADC TC of the control chip (U17). The thermocouple signal sampling circuit is provided with a first socket (J7) for connecting to the thermocouple sensor used to collect internal temperature. The ambient temperature sampling circuit is connected to pin 7 of the control chip (U17) via the ADC Env; the ambient temperature sampling circuit is equipped with a temperature sampling diode (D18) for collecting ambient temperature data. The heat sink temperature sampling circuit is connected to the 9-pin SENSOR ADC of the control chip (U17). The heat sink temperature sampling circuit is equipped with an eighth socket (J8) for connecting to the temperature sensor.

2. The circuit structure of the three-phase infrared controller according to claim 1, characterized in that: The thermocouple signal sampling circuit is equipped with a fifth bidirectional diode (D5), a sixth bidirectional diode (D6), and a fourth operational amplifier chip (U4). The common terminal (pin 3) of the fifth bidirectional diode (D5) is connected to pin 2 of the fourth operational amplifier chip (U4), and the common terminal (pin 3) of the sixth bidirectional diode (D6) is connected to pin 8 (ADC TC) of the control chip (U17). The fourth operational amplifier chip (U4) is connected to a linear power supply, and its pin 6 is connected to pin 8 (ADC TC) of the control chip (U17).

3. The circuit structure of the three-phase infrared controller according to claim 2, characterized in that: The three-phase current sampling circuit is equipped with a third transport amplifier (U3), and pin 1 of the third transport amplifier (U3) is connected to one of the corresponding pins of pins 10, 14, and 15 of the control chip (U17).

4. The circuit structure of the three-phase infrared controller according to claim 2, characterized in that: The output pulse control circuit includes a first fuse (F1), a second fuse (F2), a second high-frequency pulse transformer (T2), a third high-frequency pulse transformer (T3), a fourth transistor (Q4), a single-cell transistor (Q1), and a fourteenth diode (D14). The base of the fourth transistor (Q4) is connected to one of the corresponding pins 22, 21, and 3 of the control chip (U17) via the single-cell transistor (Q1). The collector of the fourth transistor (Q4) is connected to the fourteenth diode (D14), the second high-frequency pulse transformer (T2), and the third high-frequency pulse transformer (T3). The first fuse (F1) is connected to the left input terminal of the second high-frequency pulse transformer (T3), and a thirteenth diode (D13) is connected to the right output terminal of the second high-frequency pulse transformer (T2) between the right output terminal and pin 1 (R-K2) of the fifth terminal (J5). A second fuse (F2) is connected to the right output terminal of the third high-frequency pulse transformer (T3), and a sixteenth diode (D16) is connected to the right output terminal of the third high-frequency pulse transformer (T3) between the right output terminal and pin 4 (R-K1) of the fifth terminal (J5).

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