A crystal output switch module with normally open and normally closed conversion function

Abstract

This utility model discloses a crystal output switch module with normally open and normally closed switching function, relating to the field of industrial control technology. It includes a power supply module, an input module, an output module, and an indicator module. The power supply module is connected to the input module, the input module is connected to the output module, and the indicator module is connected to both the input module and the power supply module. The power supply module converts the power supply voltage to the voltage required by the input module, supplying power to the input module. The input module receives input signals and controls the output module to output normally open and normally closed signals based on the input signals. The input signals include NPN and PNP type switching signals. The indicator module indicates the status of the input signals and the power supply. This module solves the problems of poor compatibility and easy damage during rapid signal switching of traditional mechanical relays, meeting the high-frequency and high-stability switching operation requirements in industrial control.

Description

Technical Field

[0001] This utility model relates to the field of industrial control technology, and in particular to a crystal output switch module with normally open and normally closed switching function. Background Technology

[0002] In traditional industrial control cabinets, a large number of signals need to be transmitted through relays, and many sensors, cylinders, and other devices also rely on relays for control. In conventional applications, relays can meet the needs of most scenarios. However, in special situations (such as the safety signal transmission of safety light curtains), due to the rapid switching of signals, traditional mechanical relays are easily damaged due to their structural characteristics, leading to equipment downtime and causing production interruptions and increased maintenance costs for users. Furthermore, traditional relays have poor compatibility with input signals, and cannot accommodate both PNP and NPN switching signals. Utility Model Content

[0003] In response to the aforementioned problems and technical requirements, the applicant has proposed a crystal output switch module with normally open and normally closed switching functions.

[0004] The technical solution of this utility model is as follows:

[0005] A crystal output switch module with normally open and normally closed switching function includes a power supply module, an input module, an output module, and an indicator module. The power supply module is connected to the input module, the input module is connected to the output module, and the indicator module is connected to both the input module and the power supply module.

[0006] The power supply module is used to convert the power supply voltage into the voltage required by the input module to power the input module; the input module is used to receive input signals and control the output module to output normally open and normally closed signals according to the input signals, and the input signals include NPN type switch signals and PNP type switch signals; the indicator module is used to indicate the status of the input signals and the status of the power supply.

[0007] A further technical solution is that the input module includes an input port X1, a ground port S / S, a rectifier bridge D5, a resistor R1, a resistor R23, a capacitor C13, and an optocoupler U5, wherein...

[0008] The first input terminal of the rectifier bridge D5 is connected to the ground port S / S, the second input terminal of the rectifier bridge D5 is connected to the input port X1, the positive output terminal of the rectifier bridge D5 is connected to the first pin of the optocoupler U5 through resistor R1, the negative output terminal of the rectifier bridge D5 is connected to the third pin of the optocoupler U5, the first pin of the optocoupler U5 is connected to the third pin through resistor R23, the capacitor C13 is connected in parallel with resistor R23, the fourth pin of the optocoupler U5 is grounded, the sixth pin of the optocoupler U5 is connected to the power supply module, and the fifth and sixth pins of the optocoupler U5 are connected to the output module.

[0009] A further technical solution is that the input module also includes resistor R34, resistor R24, capacitor C14, and optocoupler U7, wherein,

[0010] The positive output terminal of the rectifier bridge D5 is connected to the first pin of the optocoupler U7 through resistor R34. The negative output terminal of the rectifier bridge D5 is connected to the third pin of the optocoupler U7. The first pin of the optocoupler U7 is connected to the third pin through resistor R24. The capacitor C14 is connected in parallel with resistor R24. The fourth pin of the optocoupler U7 is grounded. The sixth pin of the optocoupler U7 is connected to the power supply module. The fourth and fifth pins of the optocoupler U7 are connected to the output module.

[0011] A further technical solution is that the optocoupler U5 and optocoupler U7 include the model NSI6801.

[0012] A further technical solution is that the output module includes resistor R9, resistor R27, capacitor C17, optocoupler U1, bidirectional TVS diode D1, and terminal P3, wherein...

[0013] The sixth pin of the optocoupler U5 is connected to the first pin of the optocoupler U1 through resistor R9. The fifth pin of the optocoupler U5 is connected to the second pin of the optocoupler U1. The first pin of the optocoupler U1 is connected to the second pin through resistor R27. The capacitor C17 is connected in parallel with resistor R27. The seventh pin of the optocoupler U1 is connected to one end of the bidirectional TVS diode D1 and the second pin of terminal P3. The eighth pin of the optocoupler U1 is connected to the other end of the bidirectional TVS diode D1 and the third pin of terminal P3.

[0014] A further technical solution is that the output module also includes resistor R11, resistor R28, capacitor C18, and bidirectional TVS diode D2, wherein,

[0015] The fifth pin of the optocoupler U7 is connected to the third pin of the optocoupler U1 through resistor R11. The fourth pin of the optocoupler U7 is connected to the fourth pin of the optocoupler U1. The third pin of the optocoupler U1 is connected to the fourth pin through resistor R28. The capacitor C18 is connected in parallel with the resistor R28. The sixth pin of the optocoupler U1 is connected to one end of the bidirectional TVS diode D2 and the second pin of terminal P3. The fifth pin of the optocoupler U1 is connected to the other end of the bidirectional TVS diode D2 and the first pin of terminal P3.

[0016] A further technical solution is that the model of the optocoupler U1 includes GAQW211G23H.

[0017] A further technical solution is that the power supply module includes terminal P1, diode D7, resistor R35, capacitor C12, isolation power chip U6, capacitor C5, and capacitor C7, wherein...

[0018] The first pin of terminal P1 is connected to the positive terminal of diode D7. The negative terminal of diode D7 is connected to one end of capacitor C12 and the positive input terminal of isolation power chip U6 through resistor R35. The negative input terminal of isolation power chip U6 and the other end of capacitor C12 are grounded.

[0019] The positive output terminal of the isolation power chip U6 is connected to one end of the capacitor C5, and the other end of the capacitor C5 is connected to the negative output terminal of the isolation power chip U6 and grounded. The capacitor C7 is connected in parallel with the capacitor C5.

[0020] A further technical solution is that the indicator module includes an indicator light X11 and a resistor R31. One end of the resistor R31 is connected to the positive output terminal of the rectifier bridge D5, the other end of the resistor R31 is connected to the positive terminal of the indicator light X11, and the negative terminal of the indicator light X11 is connected to the negative output terminal of the rectifier bridge D5.

[0021] A further technical solution is that the indicator module also includes an indicator light PWR1 and a resistor R33. One end of the resistor R33 is connected to one end of the resistor R35 and one end of the capacitor C12. The other end of the resistor R33 is connected to the positive terminal of the indicator light PWR1. The negative terminal of the indicator light PWR1 is connected to the second pin of the terminal P1 and grounded.

[0022] The beneficial technical effects of this utility model are:

[0023] The crystal output switch module provided by this utility model has excellent functional compatibility, supporting both NPN and PNP input signal types. It can directly replace traditional relays in various industrial control scenarios, not only meeting the needs of normally open and normally closed state switching in industrial control scenarios, but also possessing high-frequency switching capabilities not found in traditional mechanical relays, supporting rapid switching above 100Hz. It is particularly suitable for high-frequency signal switching scenarios, such as safety light curtain signal control. Furthermore, the module's output supports multi-stage series connection, effectively overcoming the limitation that ordinary transistors (such as bipolar transistors and MOSFETs) cannot be connected in series, thus significantly improving the flexibility of circuit design. The module is also equipped with an input indicator light (X11) and a power indicator light (PWR1), which can display the on / off status of the input signal and power supply in real time, facilitating user debugging and troubleshooting. In summary, this module solves the problems of poor compatibility and easy damage during rapid signal switching of traditional mechanical relays, meeting the high-frequency, high-stability switching operation requirements in industrial control. Attached Figure Description

[0024] Figure 1 This is a circuit diagram of one embodiment of the input module, output module, and some indicator modules provided by this utility model.

[0025] Figure 2 This is a circuit diagram of one embodiment of the power supply module and some indicator modules provided by this utility model. Detailed Implementation

[0026] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this disclosure.

[0027] This utility model discloses a crystal output switch module with normally open and normally closed switching function, including a power supply module, an input module, an output module and an indicator module. The power supply module is connected to the input module, the input module is connected to the output module, and the indicator module is connected to both the input module and the power supply module.

[0028] The power supply module is used to convert the power supply voltage into the voltage required by the input module to power the input module; the input module is used to receive input signals and control the output module to output normally open and normally closed signals according to the input signals, and the input signals include NPN type switch signals and PNP type switch signals; the indicator module is used to indicate the status of the input signals and the status of the power supply.

[0029] For details, please refer to Figure 1The input module includes an input port X1, a ground port S / S, a rectifier bridge D5, resistors R1 and R23, a capacitor C13, and an optocoupler U5. The first input terminal of the rectifier bridge D5 is connected to the ground port S / S, the second input terminal of the rectifier bridge D5 is connected to the input port X1, the positive output terminal of the rectifier bridge D5 is connected to the first pin of the optocoupler U5 through resistor R1, the negative output terminal of the rectifier bridge D5 is connected to the third pin of the optocoupler U5, the first pin of the optocoupler U5 is connected to the third pin through resistor R23, the capacitor C13 is connected in parallel with resistor R23, the fourth pin of the optocoupler U5 is grounded, the sixth pin of the optocoupler U5 is connected to the power supply module, and the fifth and sixth pins of the optocoupler U5 are connected to the output module.

[0030] The input module also includes resistors R34 and R24, capacitor C14, and optocoupler U7. The positive output terminal of rectifier bridge D5 is connected to the first pin of optocoupler U7 via resistor R34, and the negative output terminal of rectifier bridge D5 is connected to the third pin of optocoupler U7. The first pin of optocoupler U7 is connected to the third pin via resistor R24. Capacitor C14 is connected in parallel with resistor R24. The fourth pin of optocoupler U7 is grounded, the sixth pin of optocoupler U7 is connected to the power supply module, and the fourth and fifth pins of optocoupler U7 are connected to the output module. In this embodiment, optocouplers U5 and U7 are model NSI6801.

[0031] Furthermore, the output module includes resistor R9, resistor R27, capacitor C17, optocoupler U1, bidirectional TVS diode D1, and terminal P3. The sixth pin of optocoupler U5 is connected to the first pin of optocoupler U1 via resistor R9. The fifth pin of optocoupler U5 is connected to the second pin of optocoupler U1. The first pin of optocoupler U1 is connected to the second pin via resistor R27. Capacitor C17 is connected in parallel with resistor R27. The seventh pin of optocoupler U1 is connected to one end of bidirectional TVS diode D1 and the second pin of terminal P3. The eighth pin of optocoupler U1 is connected to the other end of bidirectional TVS diode D1 and the third pin of terminal P3.

[0032] The output module also includes resistors R11 and R28, capacitor C18, and a bidirectional TVS diode D2. The fifth pin of optocoupler U7 is connected to the third pin of optocoupler U1 via resistor R11. The fourth pin of optocoupler U7 is connected to the fourth pin of optocoupler U1. The third pin of optocoupler U1 is connected to its fourth pin via resistor R28. Capacitor C18 is connected in parallel with resistor R28. The sixth pin of optocoupler U1 is connected to one end of the bidirectional TVS diode D2 and the second pin of terminal P3. The fifth pin of optocoupler U1 is connected to the other end of the bidirectional TVS diode D2 and the first pin of terminal P3. In this embodiment, optocoupler U1 is a solid-state optocoupler of model GAQW211G23H, with output isolation performance meeting 5KV Vrms.

[0033] The input signal is input through rectifier bridge D5, compatible with both NPN and PNP type switch signals, and can adapt to different types of control signal sources, improving the versatility of the module group. The input signal controls the on / off state of optocouplers U5 and U7, thereby controlling the output switching of optocoupler U1. A bidirectional TVS diode is installed at the output terminal of optocoupler U1 to absorb surge voltage and prevent damage to optocoupler U1 due to voltage surges.

[0034] The specific working principle of the crystal output switch module is as follows: Input port X1 and ground port S / S form an input circuit. The input signal is input through input port X1. When there is no input signal, the fifth pin of optocoupler U5 outputs a low level, and the first and second pins of optocoupler U1 are turned on, making the seventh and eighth pins of optocoupler U1 turn on. At the same time, the fifth pin of optocoupler U7 outputs a low level, and the third and fourth pins of optocoupler U1 are turned off, making the fifth and sixth pins of optocoupler U1 turn off. When there is an input signal, the fifth pin of optocoupler U5 outputs a high level, and the first and second pins of optocoupler U1 are turned off, making the seventh and eighth pins of optocoupler U1 turn off. At the same time, the fifth pin of optocoupler U7 outputs a high level, and the third and fourth pins of optocoupler U1 are turned on, making the fifth and sixth pins of optocoupler U1 turn on. In practical implementation, the sixth and seventh pins of the optocoupler U1 are connected through the internal connection of the PCB board and used as a common point. The second pin of the terminal P3 is the common terminal, the first pin is the normally open terminal, and the third pin is the normally closed terminal, so that the terminal P3 can output a set of normally open and normally closed conversion signals.

[0035] The indicator module includes an indicator light X11 and a resistor R31. One end of the resistor R31 is connected to the positive output terminal of the rectifier bridge D5, and the other end of the resistor R31 is connected to the positive terminal of the indicator light X11. The negative terminal of the indicator light X11 is connected to the negative output terminal of the rectifier bridge D5. The indicator light X11 illuminates when an input signal is input.

[0036] Further, please refer to Figure 2 The power supply module includes terminal P1, diode D7, resistor R35, capacitor C12, isolation power chip U6, capacitor C5, and capacitor C7, wherein...

[0037] The first pin of terminal P1 is connected to the anode of diode D7. The cathode of diode D7 is connected to one end of capacitor C12 and the anode input of isolation power chip U6 through resistor R35. The cathode input of isolation power chip U6 and the other end of capacitor C12 are grounded. The anode output of isolation power chip U6 is connected to one end of capacitor C5. The other end of capacitor C5 is connected to the cathode output of isolation power chip U6 and grounded. Capacitor C7 is connected in parallel with capacitor C5. The anode output of isolation power chip U6 is connected to the sixth pin of optocoupler U5 and optocoupler U7.

[0038] In this embodiment, the power supply is a standard 24V power supply, connected through terminal P1. The isolated power chip U6 converts the voltage to 15V to power optocouplers U5 and U7, ensuring stable power supply and electrical isolation characteristics. Diode D7 is a reverse-connection protection diode to prevent damage to the module from reverse power connection. The isolated power chip U6 can be of a commonly used type in the art.

[0039] The indicator module also includes an indicator light PWR1 and a resistor R33. One end of the resistor R33 is connected to one end of the resistor R35 and one end of the capacitor C12. The other end of the resistor R33 is connected to the positive terminal of the indicator light PWR1. The negative terminal of the indicator light PWR1 is connected to the second pin of terminal P1 and grounded. When the power supply is working normally, the indicator light PWR1 is lit.

[0040] In practical implementation, the aforementioned crystal output switch module can be directly installed in a traditional industrial control cabinet. It connects to a 24V power supply via terminal P1, connects to the controlled device (such as a sensor, cylinder, or safety light curtain) via terminal P3, and connects to the control terminal (such as a PLC output signal) via input port X1. During use, it adapts directly to the input signal type (NPN / PNP) without additional adjustments. The input indicator (X11) and power indicator (PWR1) display the on / off status of the input signal and power supply in real time, facilitating rapid debugging. This module can stably support switching frequencies above 100Hz in high-frequency signal switching scenarios (such as safety signal control for safety light curtains), and the output terminals can be connected in multiple series as needed, solving the problem of frequent damage to traditional relays and meeting the high-frequency, high-stability switching operation requirements in industrial control.

[0041] In the description of this specification, the terms "first," "second," "third," "fourth," etc., 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. The descriptions using the terms "one embodiment / mode," "some embodiments / modes," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment / mode or example is included in at least one embodiment / mode or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment / mode or example.

[0042] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0043] The above descriptions are merely preferred embodiments of the present invention, and the present invention is not limited to the above embodiments. It is understood that other improvements and variations that can be directly derived or conceived by those skilled in the art without departing from the spirit and concept of the present invention should be considered to be included within the protection scope of the present invention.

Claims

1. A crystal output switch module with a normally open and normally closed conversion function, characterized in that, It includes a power supply module, an input module, an output module, and an indicator module. The power supply module is connected to the input module, the input module is connected to the output module, and the indicator module is connected to both the input module and the power supply module. The power supply module is used to convert the power supply voltage into the voltage required by the input module to power the input module; the input module is used to receive input signals and control the output module to output normally open and normally closed signals according to the input signals, and the input signals include NPN type switch signals and PNP type switch signals; the indicator module is used to indicate the status of the input signals and the status of the power supply.

2. The crystal output switch module with the open-close conversion function according to claim 1, characterized in that, The input module includes an input port X1, a ground port S / S, a rectifier bridge D5, a resistor R1, a resistor R23, a capacitor C13, and an optocoupler U5, wherein... The first input terminal of the rectifier bridge D5 is connected to the ground port S / S, the second input terminal of the rectifier bridge D5 is connected to the input port X1, the positive output terminal of the rectifier bridge D5 is connected to the first pin of the optocoupler U5 through resistor R1, the negative output terminal of the rectifier bridge D5 is connected to the third pin of the optocoupler U5, the first pin of the optocoupler U5 is connected to the third pin through resistor R23, the capacitor C13 is connected in parallel with resistor R23, the fourth pin of the optocoupler U5 is grounded, the sixth pin of the optocoupler U5 is connected to the power supply module, and the fifth and sixth pins of the optocoupler U5 are connected to the output module.

3. The crystal output switch module with the open-close conversion function according to claim 2, characterized in that, The input module also includes resistor R34, resistor R24, capacitor C14, and optocoupler U7, wherein... The positive output terminal of the rectifier bridge D5 is connected to the first pin of the optocoupler U7 through resistor R34. The negative output terminal of the rectifier bridge D5 is connected to the third pin of the optocoupler U7. The first pin of the optocoupler U7 is connected to the third pin through resistor R24. The capacitor C14 is connected in parallel with resistor R24. The fourth pin of the optocoupler U7 is grounded. The sixth pin of the optocoupler U7 is connected to the power supply module. The fourth and fifth pins of the optocoupler U7 are connected to the output module.

4. The crystal output switch module with the open-close conversion function according to claim 3, characterized in that, The optocouplers U5 and U7 include the model NSI6801.

5. The crystal output switch module with the open-close conversion function according to claim 3, characterized in that, The output module includes resistor R9, resistor R27, capacitor C17, optocoupler U1, bidirectional TVS diode D1, and terminal P3, wherein... The sixth pin of the optocoupler U5 is connected to the first pin of the optocoupler U1 through resistor R9. The fifth pin of the optocoupler U5 is connected to the second pin of the optocoupler U1. The first pin of the optocoupler U1 is connected to the second pin through resistor R27. The capacitor C17 is connected in parallel with resistor R27. The seventh pin of the optocoupler U1 is connected to one end of the bidirectional TVS diode D1 and the second pin of terminal P3. The eighth pin of the optocoupler U1 is connected to the other end of the bidirectional TVS diode D1 and the third pin of terminal P3.

6. The crystal output switch module with open-close conversion function according to claim 5, characterized in that, The output module also includes resistor R11, resistor R28, capacitor C18, and bidirectional TVS diode D2, wherein... The fifth pin of the optocoupler U7 is connected to the third pin of the optocoupler U1 through resistor R11. The fourth pin of the optocoupler U7 is connected to the fourth pin of the optocoupler U1. The third pin of the optocoupler U1 is connected to the fourth pin through resistor R28. The capacitor C18 is connected in parallel with the resistor R28. The sixth pin of the optocoupler U1 is connected to one end of the bidirectional TVS diode D2 and the second pin of terminal P3. The fifth pin of the optocoupler U1 is connected to the other end of the bidirectional TVS diode D2 and the first pin of terminal P3.

7. The crystal output switch module with open-close conversion function according to claim 6, characterized in that, The model of the optocoupler U1 includes GAQW211G23H.

8. The crystal output switch module with the open-close conversion function according to claim 1, characterized in that, The power supply module includes terminal P1, diode D7, resistor R35, capacitor C12, isolation power chip U6, capacitor C5, and capacitor C7, wherein... The first pin of terminal P1 is connected to the positive terminal of diode D7. The negative terminal of diode D7 is connected to one end of capacitor C12 and the positive input terminal of isolation power chip U6 through resistor R35. The negative input terminal of isolation power chip U6 and the other end of capacitor C12 are grounded. The positive output terminal of the isolation power chip U6 is connected to one end of the capacitor C5, and the other end of the capacitor C5 is connected to the negative output terminal of the isolation power chip U6 and grounded. The capacitor C7 is connected in parallel with the capacitor C5.

9. The crystal output switch module with the open-close conversion function according to claim 2, characterized in that, The indicator module includes an indicator light X11 and a resistor R31. One end of the resistor R31 is connected to the positive output terminal of the rectifier bridge D5, and the other end of the resistor R31 is connected to the positive terminal of the indicator light X11. The negative terminal of the indicator light X11 is connected to the negative output terminal of the rectifier bridge D5.

10. The crystal output switch module with open-close conversion function according to claim 8, characterized in that, The indicator module also includes an indicator light PWR1 and a resistor R33. One end of the resistor R33 is connected to one end of the resistor R35 and one end of the capacitor C12. The other end of the resistor R33 is connected to the positive terminal of the indicator light PWR1. The negative terminal of the indicator light PWR1 is connected to the second pin of the terminal P1 and grounded.

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