Novel dual-channel input control optocoupler device

Abstract

The utility model discloses a novel dual-channel input control optocoupler device, which relates to the technical field of electronics and comprises a light emitting diode LED1, a light emitting diode LED2, a bidirectional silicon controlled rectifier TRIAC1 and a bidirectional silicon controlled rectifier TRIAC2. The light emitting diode LED1 is connected with the light emitting diode LED2 in series, the bidirectional silicon controlled rectifier TRIAC1 is connected with the bidirectional silicon controlled rectifier TRIAC2 in series, when the light emitting diode LED1 is connected with the light emitting diode LED2 in series, combined state input is generated, and the combined state input comprises a first input mode, a second input mode and a third input mode; the first input mode is composed of a first pin and a second pin, the second input mode is composed of a second pin and a third pin, and the third input mode is composed of a first pin and a third pin. The optical coupler is simple in structure and reasonable in design, effectively avoids the problem of series failure caused by inconsistent trigger current, and remarkably improves the withstand voltage upper limit of the optical coupler.

Description

Technical Field

[0001] The utility model relates to the field of electronic technology, in particular to a novel dual-channel input control optical coupling device. Background Art

[0002] Optocoupler is a device that realizes photoelectric isolation and conversion between input and output signals. Its core components include light source, optical coupling element and photodetector. Among them, the light source usually uses LED (light emitting diode) or laser to emit light signal; the optical coupling element is responsible for transmitting these light signals, generally using photocoupler or photocoupler relay, etc.; the photodetector converts the received light signal into electrical signal. This design realizes electrical isolation between input and output signals, thereby greatly improving the safety and stability of the system.

[0003] Optocouplers can achieve electrical isolation between input and output, and replace electrical signal transmission with optical signal transmission, effectively preventing electrical interference between the input and output ends and improving the safety and stability of the circuit. Since optical signal transmission is not affected by electromagnetic interference, optocouplers can effectively isolate the noise between the input and output ends and provide clear and stable output signals. At the same time, optocouplers can also achieve voltage isolation between input and output, especially in high-voltage environments, which can effectively prevent voltage shocks from damaging the circuit and improve the reliability and durability of the circuit.

[0004] Currently, optocouplers on the market are usually medium and low voltage devices with a withstand voltage below 1000V. To achieve high withstand voltage, two optocouplers need to be used in series on a PCB (printed circuit board). However, when using series optocouplers, it is very important to ensure the consistency of the series optocouplers. If there is a large difference in the trigger current of the two optocouplers, one optocoupler may be triggered first while the other has not yet been triggered, resulting in the high voltage being applied to the optocoupler that has not yet turned on, causing overvoltage damage.

[0005] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0006] The purpose of the utility model is to provide a novel dual-channel input control optocoupler device to solve the problems raised in the above background technology.

[0007] To achieve the above object, the utility model provides the following technical solutions: a novel dual-channel input control optocoupler device, the optocoupler device includes a light emitting diode LED1, a light emitting diode LED2, a bidirectional thyristor TRIAC1 and a bidirectional thyristor TRIAC2;

[0008] The light emitting diode LED1 is connected in series with the light emitting diode LED2, and the bidirectional thyristor TRIAC1 is connected in series with the bidirectional thyristor TRIAC2.

[0009] It should be noted that the new dual-channel input control optocoupler device provided by the present invention can ensure that the electrical characteristics of the two channels are consistent, thereby effectively avoiding the problem of series failure caused by inconsistent trigger current. It not only significantly improves the upper limit of the voltage resistance of the optocoupler device, but also is suitable for more high-voltage application scenarios. By optimizing the internal trigger current and response time, it ensures the consistency and synchronous operation of the optocoupler device in a high-voltage environment, thereby preventing excessive pressure on another non-conducting optocoupler device due to premature triggering of a single optocoupler device, and also reduces the risk of overvoltage damage that may be caused by this.

[0010] Preferably, when the light emitting diode LED1 and the light emitting diode LED2 are connected in series, a combined state input is generated, and the combined state input includes input mode 1, input mode 2 and input mode 3;

[0011] Among them, input mode 1 consists of the first pin and the second pin, input mode 2 consists of the second pin and the third pin, and input mode 3 consists of the first pin and the third pin.

[0012] Preferably, when bidirectional thyristor TRIAC1 and bidirectional thyristor TRIAC2 are connected in series, a combined state output is generated; the combined state output includes output mode 1, output mode 2 and output mode 3;

[0013] Among them, output mode one is composed of the fourth pin and the fifth pin, output mode two is composed of the fifth pin and the sixth pin, and output mode three is composed of the fourth pin and the sixth pin.

[0014] Preferably, when the combined state input or combined state output is based on a single channel, the optocoupler device is in a low voltage mode; when the combined state input or combined state output is based on a series channel, the optocoupler device is in a high voltage mode;

[0015] Among them, the low pressure mode includes low pressure mode 1 and low pressure mode 2.

[0016] It should be noted that the new dual-channel input control optocoupler device provided by the present invention adopts a two-channel design, which can select different light-emitting diode LED combinations at the input end according to different application scenarios to achieve high-voltage output or low-voltage output control, and thus can realize multiple output modes in the same device, thereby enhancing the applicability and flexibility of the optocoupler device.

[0017] Preferably, low-voltage mode 1 is: connecting a driving current between the first pin and the second pin, and diffracting the visible light emitted by the light-emitting diode LED1 to the ZC photosensitive area on the surface of the bidirectional thyristor TRIAC1, and turning on the bidirectional thyristor TRIAC1 when the alternating current of the fifth pin and the sixth pin passes through zero point phase switching, thereby realizing low-voltage control.

[0018] Preferably, low-voltage mode two is: connecting a driving current between the second pin and the third pin, and diffracting the visible light emitted by the light-emitting diode LED2 to the ZC photosensitive area on the surface of the bidirectional thyristor TRIAC2, and turning on the bidirectional thyristor TRIAC2 when the alternating current of the fourth pin and the fifth pin passes through zero point switching, thereby realizing low-voltage control.

[0019] It should be noted that in terms of the combined state input of the new dual-channel input control optocoupler device provided by the present invention, the user can select the input ends of the light-emitting diode LED1 and the light-emitting diode LED2 according to the specific situation to control the low-voltage output or series high-voltage output of a single tube. Through this flexible combined input method, the user can choose the most suitable input mode according to different application scenarios, thereby achieving more precise control and application.

[0020] Preferably, the maximum withstand voltage of the bidirectional thyristor TRIAC1 or the bidirectional thyristor TRIAC2 in the low voltage mode is 600V.

[0021] Preferably, the high-voltage mode is: connecting a driving current between the first pin and the third pin, and diffracting the visible light emitted by the light-emitting diode LED1 and the light-emitting diode LED2 to the ZC photosensitive areas of the bidirectional thyristor TRIAC1 and the bidirectional thyristor TRIAC2 respectively; when the alternating current of the fourth pin and the sixth pin passes through zero point switching, the bidirectional thyristor TRIAC1 and the bidirectional thyristor TRIAC2 are turned on, thereby realizing high-voltage control.

[0022] It should be noted that, in terms of the combined state output of the novel dual-channel input-controlled optocoupler device provided by the present invention, the user can select the output ends of the bidirectional thyristor TRIAC1 and the bidirectional thyristor TRIAC2 according to specific needs to achieve a single-tube low-voltage output or a series high-voltage output, further enhancing the versatility of the optocoupler device and thus being able to meet a wider range of application needs.

[0023] Preferably, the minimum withstand voltage of the bidirectional thyristor TRIAC1 or the bidirectional thyristor TRIAC2 in the high voltage mode is 1200V.

[0024] Preferably, the driving current connected between the first pin and the second pin is 25 mA.

[0025] Compared with the prior art, the beneficial effects of the utility model are:

[0026] 1. This new dual-channel input control optocoupler device adopts a two-channel design. It can select different light-emitting diode LED combinations at the input end according to different application scenarios to achieve high-voltage output or low-voltage output control, and thus can achieve multiple output modes in the same device, enhancing the applicability and flexibility of the optocoupler device;

[0027] 2. This is a new type of dual-channel input control optocoupler device. In terms of combined state input, users can select the input ends of light-emitting diodes LED1 and LED2 according to specific circumstances to control the low-voltage output of a single tube or the series high-voltage output. Through this flexible combined input method, users can select the most suitable input mode according to different application scenarios, thereby achieving more precise control and application; in terms of combined state output, users can select the output ends of bidirectional thyristors TRIAC1 and bidirectional thyristors TRIAC2 according to specific needs to achieve the low-voltage output of a single tube or the series high-voltage output, further enhancing the versatility of the optocoupler device, thereby being able to meet a wider range of application needs;

[0028] 3. This new dual-channel input control optocoupler device can ensure the consistency of the electrical characteristics of the two channels, thereby effectively avoiding the series failure problem caused by inconsistent trigger current. It not only significantly improves the upper voltage limit of the optocoupler device and is suitable for more high-voltage application scenarios, but also ensures the consistency and synchronous operation of the optocoupler device in a high-voltage environment by optimizing the internal trigger current and response time, thereby preventing excessive pressure on another non-conducting optocoupler device due to premature triggering of a single optocoupler device, and reducing the risk of overvoltage damage that may be caused by this. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 4 is a schematic diagram of the structure of a novel dual-channel input control optocoupler device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships 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 should not be understood as a limitation on the present invention.

[0032] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "setting" should be understood in a broad sense, for example, it can be fixed connection, setting, or detachable connection, setting, or integrated connection, setting. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0034] Example

[0035] See also Figure 1 As shown, the utility model provides a novel dual-channel input control optocoupler device technical solution: the optocoupler device includes a light-emitting diode LED1, a light-emitting diode LED2, a bidirectional thyristor TRIAC1 and a bidirectional thyristor TRIAC2; the light-emitting diode LED1 and the light-emitting diode LED2 are connected in series, and the bidirectional thyristor TRIAC1 and the bidirectional thyristor TRIAC2 are connected in series.

[0036] The novel dual-channel input control optocoupler device provided by the present invention can ensure the consistency of the electrical characteristics of the two channels, thereby effectively avoiding the series failure problem caused by inconsistent trigger currents, not only significantly improving the upper voltage limit of the optocoupler device, and being suitable for more high-voltage application scenarios, but also ensuring the consistency and synchronous operation of the optocoupler device in a high-voltage environment by optimizing the internal trigger current and response time, thereby preventing excessive pressure on another non-conducting optocoupler device due to premature triggering of a single optocoupler device, and reducing the risk of overvoltage damage that may be caused by this.

[0037] When the light emitting diode LED1 and the light emitting diode LED2 are connected in series, a combination state input is generated, and the combination state input includes input mode one, input mode two and input mode three; input mode one is composed of the first pin and the second pin, input mode two is composed of the second pin and the third pin, and input mode three is composed of the first pin and the third pin; when the bidirectional thyristor TRIAC1 and the bidirectional thyristor TRIAC2 are connected in series, a combination state output is generated; the combination state output includes output mode one, output mode two and output mode three; output mode one is composed of the fourth pin and the fifth pin, output mode two is composed of the fifth pin and the sixth pin, and output mode three is composed of the fourth pin and the sixth pin.

[0038] It should be noted that the input end of the optocoupler device is composed of a light-emitting diode LED1 and a light-emitting diode LED2, including three combination state inputs, namely, the first pin and the second pin, the second pin and the third pin, and the first pin and the third pin. The output end of the optocoupler device is composed of a bidirectional thyristor TRIAC1 and a bidirectional thyristor TRIAC2, including three combination state outputs, namely, the fourth pin and the fifth pin, the fifth pin and the sixth pin, and the fourth pin and the sixth pin.

[0039] When based on a single-channel combined state input or combined state output, the optocoupler device is in a low-voltage mode, wherein the low-voltage mode includes low-voltage mode 1 and low-voltage mode 2; when based on a series channel combined state input or combined state output, the optocoupler device is in a high-voltage mode.

[0040] It should be noted that the new dual-channel input control optocoupler device provided by the present invention adopts a two-channel design, which can select different light-emitting diode LED combinations at the input end according to different application scenarios to achieve high-voltage output or low-voltage output control, and thus can realize multiple output modes in the same device, thereby enhancing the applicability and flexibility of the optocoupler device.

[0041] Low-voltage mode 1 is: connecting a driving current between the first pin and the second pin, and diffracting the visible light emitted by the light-emitting diode LED1 to the ZC photosensitive area on the surface of the bidirectional thyristor TRIAC1, and turning on the bidirectional thyristor TRIAC1 when the alternating current of the fifth pin and the sixth pin passes through zero point switching, thereby realizing low-voltage control.

[0042] Low-voltage mode two is: connecting a driving current between the second pin and the third pin, and diffracting the visible light emitted by the light-emitting diode LED2 to the ZC photosensitive area on the surface of the bidirectional thyristor TRIAC2, and turning on the bidirectional thyristor TRIAC2 when the alternating current of the fourth pin and the fifth pin passes through zero point switching, thereby realizing low-voltage control.

[0043] It should be noted that in terms of the combined state input of the new dual-channel input control optocoupler device provided by the present invention, the user can select the input ends of the light-emitting diode LED1 and the light-emitting diode LED2 according to the specific situation to control the low-voltage output or series high-voltage output of a single tube. Through this flexible combined input method, the user can choose the most suitable input mode according to different application scenarios, thereby achieving more precise control and application.

[0044] The maximum withstand voltage of the bidirectional thyristor TRIAC1 or bidirectional thyristor TRIAC2 in the low voltage mode is 600V.

[0045] The high-voltage mode is: connecting the driving current between the first pin and the third pin, and diffracting the visible light emitted by the light-emitting diode LED1 and the light-emitting diode LED2 to the ZC photosensitive areas of the bidirectional thyristor TRIAC1 and the bidirectional thyristor TRIAC2 respectively; when the alternating current of the fourth pin and the sixth pin passes through the zero point and switches phase, the bidirectional thyristor TRIAC1 and the bidirectional thyristor TRIAC2 are turned on, thereby realizing high-voltage control.

[0046] It should be noted that, in terms of the combined state output of the novel dual-channel input-controlled optocoupler device provided by the present invention, the user can select the output ends of the bidirectional thyristor TRIAC1 and the bidirectional thyristor TRIAC2 according to specific needs to achieve a single-tube low-voltage output or a series high-voltage output, further enhancing the versatility of the optocoupler device and thus being able to meet a wider range of application needs.

[0047] The minimum withstand voltage of the bidirectional thyristor TRIAC1 or bidirectional thyristor TRIAC2 in the high voltage mode is 1200V.

[0048] The driving current connected between the first pin and the second pin is 25 mA.

[0049] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in actual process is described in detail below.

[0050] In actual applications, when the optocoupler device is in low voltage mode (single channel input / output):

[0051] The output ends of the fifth and sixth pins are connected to alternating current (AC) and are in a disconnected state. When a driving current IF=25mA is connected to the input end (the first and second pins), the light-emitting diode LED1 can emit light. Through a fixed optical channel, the visible light is diffracted to the ZC photosensitive area on the surface of the bidirectional thyristor TRIAC1 chip opposite, and is turned on when the AC at the output end (the fifth and sixth pins) passes through zero point and switches phase.

[0052] The output ends of the fourth pin and the fifth pin are connected to alternating current (AC) and are in a disconnected state. When a driving current IF=25mA is connected to the input end (the second pin and the third pin), the light-emitting diode LED2 can emit light. Through a fixed optical channel, the visible light is diffracted to the ZC photosensitive area on the surface of the opposite bidirectional thyristor TRIAC2 chip, and is turned on when the AC alternating current at the output end (the fourth pin and the fifth pin) passes through zero point and changes phase. Among them, the maximum withstand voltage of a single tube is 600V for the bidirectional thyristor TRIAC1 or the bidirectional thyristor TRIAC2.

[0053] When the optocoupler device is in high voltage mode (serial channel input / output):

[0054] The output ends of the fourth pin and the sixth pin are connected to alternating current (AC) and are in a disconnected state. A driving current IF=25mA is connected to the input ends (the first pin and the third pin). The light-emitting diodes LED1 and LED2 emit light simultaneously. Through their respective fixed optical channels, the visible light is diffracted to the ZC photosensitive areas on the surfaces of the opposite bidirectional thyristors TRIAC1 and TRIAC2 chips. The output ends (the fourth pin and the sixth pin) are turned on when the AC current at the output ends (the fourth pin and the sixth pin) passes through zero point switching. Among them, the maximum withstand voltage of a single tube is 600V for bidirectional thyristors TRIAC1 or TRIAC2, and the minimum withstand voltage after series connection is 1200V.

[0055] In summary, with the aid of the above technical scheme of the present invention, the novel dual-channel input control optocoupler device provided by the present invention adopts a two-channel design, and can select different light-emitting diode LED combinations at the input end according to different application scenarios to achieve high-voltage output or low-voltage output control, thereby being able to achieve multiple output modes in the same device, thereby enhancing the applicability and flexibility of the optocoupler device; in terms of the combination state input of the novel dual-channel input control optocoupler device provided by the present invention, the user can select the input ends of the light-emitting diode LED1 and the light-emitting diode LED2 according to the specific situation to control the low-voltage output of a single tube or the series high-voltage output. Through this flexible combination input method, the user can select the most suitable input mode according to different application scenarios, thereby achieving more precise control and application; in terms of the combination state output, the user The output ends of the bidirectional thyristor TRIAC1 and the bidirectional thyristor TRIAC2 can be selected according to specific needs to achieve low-voltage output of a single tube or series high-voltage output, further enhancing the versatility of the optocoupler device and thus being able to meet a wider range of application needs; the novel dual-channel input control optocoupler device provided by the present invention can ensure that the electrical characteristics of the two channels are consistent, thereby effectively avoiding the series failure problem caused by inconsistent trigger currents, not only significantly improving the upper voltage withstand limit of the optocoupler device, and being suitable for more high-voltage application scenarios, and by optimizing the internal trigger current and response time, ensuring the consistency and synchronous operation of the optocoupler devices in a high-voltage environment, thereby preventing excessive pressure on another non-conducting optocoupler device due to premature triggering of a single optocoupler device, and reducing the risk of overvoltage damage that may be caused thereby.

[0056] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A novel dual-channel input control optocoupler device, characterized in that: The optocoupler device includes a light emitting diode LED1, a light emitting diode LED2, a bidirectional thyristor TRIAC1 and a bidirectional thyristor TRIAC2; The light emitting diode LED1 is connected in series with the light emitting diode LED2, and the bidirectional thyristor TRIAC1 is connected in series with the bidirectional thyristor TRIAC2.

2. The novel dual-channel input control optocoupler device according to claim 1, characterized in that: When the light emitting diode LED1 and the light emitting diode LED2 are connected in series, a combined state input is generated, and the combined state input includes input mode 1, input mode 2 and input mode 3; Among them, the input mode 1 consists of the first pin and the second pin, the input mode 2 consists of the second pin and the third pin, and the input mode 3 consists of the first pin and the third pin.

3. The novel dual-channel input control optocoupler device according to claim 2, characterized in that: The bidirectional thyristor TRIAC1 and the bidirectional thyristor TRIAC2 generate a combined state output when connected in series; the combined state output includes output mode 1, output mode 2 and output mode 3; Among them, the output mode 1 is composed of the fourth pin and the fifth pin, the output mode 2 is composed of the fifth pin and the sixth pin, and the output mode 3 is composed of the fourth pin and the sixth pin.

4. The novel dual-channel input control optocoupler device according to claim 3 is characterized in that: When the combined state input or combined state output is based on a single channel, the optocoupler device is in a low voltage mode; when the combined state input or combined state output is based on a series channel, the optocoupler device is in a high voltage mode; The low pressure mode includes low pressure mode 1 and low pressure mode 2.

5. The novel dual-channel input control optocoupler device according to claim 4, characterized in that: The low-voltage mode 1 is as follows: a driving current is connected between the first pin and the second pin, and the visible light emitted by the light-emitting diode LED1 is diffracted to the ZC photosensitive area on the surface of the bidirectional thyristor TRIAC1, and the bidirectional thyristor TRIAC1 is turned on when the alternating current of the fifth pin and the sixth pin crosses the zero point and switches phase, thereby realizing low-voltage control.

6. The novel dual-channel input control optocoupler device according to claim 5, characterized in that: The low-voltage mode 2 is as follows: a driving current is connected between the second pin and the third pin, and the visible light emitted by the light-emitting diode LED2 is diffracted to the ZC photosensitive area on the surface of the bidirectional thyristor TRIAC2, and the bidirectional thyristor TRIAC2 is turned on when the alternating current of the fourth pin and the fifth pin passes through zero point switching, thereby realizing low-voltage control.

7. The novel dual-channel input control optocoupler device according to claim 6, characterized in that: The maximum withstand voltage of the bidirectional thyristor TRIAC1 or the bidirectional thyristor TRIAC2 in the low voltage mode is 600V.

8. The novel dual-channel input control optocoupler device according to claim 7, characterized in that: The high-voltage mode is as follows: a driving current is connected between the first pin and the third pin, and the visible light emitted by the light-emitting diode LED1 and the light-emitting diode LED2 is diffracted to the ZC photosensitive areas of the bidirectional thyristor TRIAC1 and the bidirectional thyristor TRIAC2 respectively; when the alternating current of the fourth pin and the sixth pin passes through zero point switching, the bidirectional thyristor TRIAC1 and the bidirectional thyristor TRIAC2 are turned on, thereby realizing high-voltage control.

9. The novel dual-channel input control optocoupler device according to claim 8, characterized in that: The minimum withstand voltage of the bidirectional thyristor TRIAC1 or the bidirectional thyristor TRIAC2 in the high-voltage mode is 1200V.

10. The novel dual-channel input control optocoupler device according to claim 9, characterized in that: The driving current connected between the first pin and the second pin is 25 mA.

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