Solenoid valve control module based on voltage judgment

Abstract

An electromagnetic valve control module based on voltage judgment comprises a power input end used for receiving rated voltage; the anti-reverse connection circuit is used for protecting the module from being damaged when the input voltage is reversely connected; the voltage judgment unit is used for dividing the input voltage to generate a low-voltage signal and comparing the low-voltage signal with a reference voltage dividing signal to generate a control signal; and the control execution unit is used for controlling on and off of an electronic switch according to the high-low level state of the control signal so as to determine whether the electromagnetic valve acts or not. The reliability of a control system is improved, it is ensured that the electromagnetic valve works within the specified voltage range, response is fast, the response time is 1 ms, a control signal can be generated fast after voltage changes, safety is high, the module is protected against damage through the anti-reverse-connection circuit when input voltage is reversely connected, and the module is effectively protected. The adaptability of the module is improved, and the installation and maintenance requirements in different scenes can be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to an electromagnetic valve control module based on voltage judgment belongs to electromagnetic valve field. BACKGROUND

[0002] In the electromagnetic valve control system, reliability and fast response are key issues. When the working voltage of the electromagnetic valve is too low or too high, it may cause normal action or damage to the circuit. Therefore, a module capable of real-time voltage judgment and reliable control of electromagnetic valve action is needed to improve system stability and service life. SUMMARY

[0003] The utility model aims at overcoming the shortcomings and deficiencies of prior art and provides an electromagnetic valve control module based on voltage judgment.

[0004] An electromagnetic valve control module based on voltage judgment, comprising a power input end for receiving rated voltage; a reverse connection protection circuit for protecting the module from being damaged when the input voltage is reversed; a voltage judgment unit for dividing the input voltage to generate a low voltage signal and comparing it with a reference voltage divided signal to generate a control signal; a control execution unit for controlling the closing of the electronic switch according to the high and low level state of the control signal to determine whether the electromagnetic valve acts. Improve the reliability of the control system, ensure that the electromagnetic valve works within the specified voltage range, and respond quickly, with a response time of 1ms, and quickly generate a control signal after voltage change, with high safety, and the module is protected from being damaged when the input voltage is reversed by the reverse connection protection circuit, effectively protecting the module. Improve the adaptability of the module, which can meet the installation and maintenance needs in different scenarios.

[0005] Preferably, the voltage judgment unit comprises: a voltage dividing circuit for dividing the input voltage DC-IN to generate a low voltage signal IN+ proportional to the input voltage; a reference voltage dividing circuit for dividing the internal reference voltage Vref to generate a fixed low voltage signal IN-; a comparison circuit for comparing the IN+ signal and the IN- signal, outputting a low level control signal when the IN+ signal is lower than the IN- signal, and outputting a high level control signal when the IN+ signal is higher than the IN- signal. The low voltage signal IN+ is dynamically generated by the voltage dividing circuit, which can ensure the safety and stability of the voltage judgment process and avoid faults or misoperation caused by direct handling of high voltage. The reference voltage dividing circuit provides a stable reference signal IN-, making the voltage comparison result more accurate and improving the reliability of the module control. The comparison circuit can quickly respond to changes in input voltage and generate high and low level control signals in real time, ensuring the sensitivity and real-time performance of the control.

[0006] Preferably, the reverse connection prevention circuit realizes polarity protection of the input voltage through a diode or a circuit structure, prevents damage of internal elements of the module due to input power connection error, and significantly improves safety and reliability of the module.

[0007] Preferably, the control execution unit comprises an electronic switch for closing or opening according to a level state of the control signal, and an electromagnetic valve for receiving a power voltage action when the electronic switch is closed. The electronic switch realizes precise control of the electromagnetic valve, simplifies circuit design, and reduces complexity of the system. When the electronic switch is closed, the electromagnetic valve can directly receive the power voltage action, providing fast and reliable execution effect. The separated design of the control execution unit facilitates maintenance and replacement, and improves practicality and economy of the module.

[0008] Preferably, a division ratio of the voltage division circuit is dynamically adjusted according to a rated voltage of the module. By dynamically adjusting the division ratio, the module can adapt to different input voltage ranges of power supply, and has a wider application scenario. Circuit errors caused by a fixed division ratio are avoided, and accuracy of voltage judgment is improved. The module can stably work under different rated voltage conditions, and flexibility of the design is improved.

[0009] Preferably, the control logic of the module is that when the input voltage is less than 30% of the rated voltage, the control signal is low; and when the input voltage is greater than 31% of the rated voltage, the control signal is high. Threshold setting effectively prevents jitter phenomenon of the control signal near the critical voltage, and enhances stability of the control signal. Through the design of the demarcation points (30% and 31%), safety and reliability of the module under the condition of excessively low or high voltage are ensured. The level control design with clear logic makes the module response more accurate, and reduces the misoperation rate.

[0010] The utility model discloses the beneficial effects as follows: improve control system reliability, ensure that the electromagnetic valve works in the specified voltage range, and fast response, can quickly generate control signal after voltage change, high safety, and through the protection circuit of reverse connection protection module when input voltage is reversed, effectively protect the module. Improve the adaptability of the module, and can be compatible with the installation and maintenance requirements in different scenes. ACCURACY

[0011] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings obtained according to these drawings without creative labor still belong to the scope of the utility model.

[0012] Fig. 1This is a wiring diagram of the present invention;

[0013] Fig. 2 This is the equivalent circuit diagram for voltage determination of this utility model. Detailed Implementation

[0014] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0015] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0016] The directional and positional terms used in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are merely for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0017] like Figs. 1-2 The diagram illustrates an embodiment of a voltage-based solenoid valve control module according to this invention. It includes a power input terminal for receiving the rated voltage; a reverse connection protection circuit to protect the module from damage when the input voltage is reversed; a voltage judgment unit for dividing the input voltage to generate a low-voltage signal and comparing it with a reference voltage divider signal to generate a control signal; and a control execution unit for controlling the opening and closing of an electronic switch based on the high and low levels of the control signal to determine whether the solenoid valve should operate. This improves the reliability of the control system, ensuring the solenoid valve operates within a specified voltage range and responds quickly (1ms response time). It rapidly generates a control signal after voltage changes, ensuring high safety. The reverse connection protection circuit effectively protects the module from damage when the input voltage is reversed. Furthermore, it enhances the module's adaptability, enabling compatibility with installation and maintenance requirements in different scenarios.

[0018] The voltage judging unit comprises: a voltage dividing circuit for dividing the input voltage DC-IN to generate a low voltage signal IN+ proportional to the input voltage; a reference voltage dividing circuit for dividing an internal reference voltage Vref to generate a fixed low voltage signal IN-; and a comparison circuit for comparing the IN+ signal with the IN- signal, outputting a low level control signal when the IN+ signal is lower than the IN- signal, and outputting a high level control signal when the IN+ signal is higher than the IN- signal. The low voltage signal IN+ is dynamically generated by the voltage dividing circuit, which ensures the safety and stability of the voltage judging process and avoids faults or misoperations caused by directly processing high voltage. The reference voltage dividing circuit provides a stable reference signal IN- to make the voltage comparison result more accurate and improve the reliability of the module control. The comparison circuit can quickly respond to input voltage changes and generate high and low level control signals in real time, ensuring the sensitivity and real-time performance of the control.

[0019] The reverse connection prevention circuit realizes polarity protection of the input voltage through a diode or a circuit structure. It prevents internal component damage caused by input power connection errors and significantly improves the safety and reliability of the module.

[0020] The control execution unit comprises: an electronic switch for closing or opening according to the level state of the control signal; and an electromagnetic valve for receiving power voltage action when the electronic switch is closed. The electronic switch realizes precise control of the electromagnetic valve, simplifies the circuit design, and reduces the complexity of the system. When the electronic switch is closed, the electromagnetic valve can directly receive power voltage action, providing fast and reliable execution effect. The separated design of the control execution unit facilitates maintenance and replacement, improving the practicality and economy of the module.

[0021] The voltage dividing ratio of the voltage dividing circuit is dynamically adjusted according to the rated voltage of the module. By dynamically adjusting the voltage dividing ratio, the module can adapt to different input voltage ranges of the power supply and have a wider application scenario. It avoids circuit errors caused by fixed voltage dividing ratio and improves the accuracy of voltage judgment. The module can work stably under different rated voltages, improving the flexibility of the design.

[0022] The control logic of the module is: when the input voltage is less than 30% of the rated voltage, the control signal is low level; and when the input voltage is greater than 31% of the rated voltage, the control signal is high level. The threshold setting effectively prevents the jitter phenomenon of the control signal near the critical voltage, enhancing the stability of the control signal. Through the design of the dividing points (30% and 31%), the safety and reliability of the module under the conditions of excessively low or excessively high voltage are ensured. The clear level control design of the logic makes the module response more accurate and reduces the misoperation rate.

[0023] Working principle

[0024] Signal generation: the module converts the input voltage DC-IN into a low voltage signal IN+ through a voltage dividing circuit, and divides the internal reference voltage Vref to generate a fixed signal IN-.

[0025] Signal comparison: when IN+ is less than IN-, a low level control signal is output; when IN+ is greater than IN-, a high level control signal is output.

[0026] Execution control:

[0027] When the output control signal OUT is high, the electronic switch is closed, and the electromagnetic valve is powered on.

[0028] When the output control signal OUT is low, the electronic switch is opened, and the electromagnetic valve remains in the power-off state.

[0029] Taking 48V working as an example, IN+ is 48 0.04=1.92V. When the input voltage is less than 30% of the rated voltage, IN+<1.92 0.3 at this time, IN+ is less than IN-, the control signal OUT is low voltage. When the input voltage is greater than 31% of the rated voltage, IN+>1.92 0.31 at this time, the control signal OUT is high voltage.

[0030] The above only discloses the preferred embodiment of the utility model, of course, cannot be limited by this to limit the right scope of the utility model, therefore, the equivalent change made according to the utility model claim, still belongs to the range covered by the utility model.

[0031] Although the utility model has been described with reference to several specific embodiments, it should be understood that the utility model is not limited to the disclosed specific embodiments. The utility model is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A solenoid valve control module based on voltage determination, characterized by: The application relates to a voltage protection module for solenoid valve, comprising a power input end for receiving rated voltage; a reverse connection protection circuit for protecting the module from being damaged when the input voltage is reversely connected; a voltage judging unit for dividing the input voltage to generate a low voltage signal and comparing the low voltage signal with a reference voltage divided signal to generate a control signal; a control executing unit for controlling the closing or opening of an electronic switch according to the high or low level state of the control signal to determine whether the solenoid valve is actuated.

2. The solenoid valve control module of claim 1, wherein: The voltage judging unit comprises a voltage dividing circuit for dividing the input voltage DC-IN to generate a low voltage signal IN+ proportional to the input voltage; a reference voltage dividing circuit for dividing an internal reference voltage Vref to generate a fixed low voltage signal IN-; a comparison circuit for comparing the IN+ signal with the IN- signal, outputting a low level control signal when the IN+ signal is lower than the IN- signal, and outputting a high level control signal when the IN+ signal is higher than the IN- signal.

3. The solenoid valve control module of claim 1 or 2, wherein: The reverse connection protection circuit realizes the polarity protection of the input voltage through a diode or a circuit structure.

4. The solenoid valve control module of claim 1, wherein: The control executing unit comprises an electronic switch for being closed or opened according to the level state of the control signal; a solenoid valve for receiving the power voltage and being actuated when the electronic switch is closed.

5. The solenoid valve control module of claim 2, wherein: The voltage dividing ratio of the voltage dividing circuit is dynamically adjusted according to the rated voltage of the module.

6. The solenoid valve control module of claim 1 or 2, wherein: The control logic of the module is that the control signal is low level when the input voltage is less than 30% of the rated voltage, and the control signal is high level when the input voltage is greater than 31% of the rated voltage.

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